{"id":16416,"date":"2026-05-12T10:24:02","date_gmt":"2026-05-12T10:24:02","guid":{"rendered":"https:\/\/www.quartz-grinding.com\/?p=16416"},"modified":"2026-05-29T05:38:25","modified_gmt":"2026-05-29T05:38:25","slug":"why-the-glass-industry-cant-do-without-quartz-sand-key-quality-requirements-explained","status":"publish","type":"post","link":"https:\/\/www.quartz-grinding.com\/vi\/why-the-glass-industry-cant-do-without-quartz-sand-key-quality-requirements-explained\/","title":{"rendered":"V\u00ec sao ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ee7y tinh kh\u00f4ng th\u1ec3 thi\u1ebfu c\u00e1t th\u1ea1ch anh: Gi\u1ea3i th\u00edch c\u00e1c y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng quan tr\u1ecdng"},"content":{"rendered":"<p>Silicon dioxide (SiO\u2082) t\u1ea1o n\u00ean c\u1ea5u tr\u00fac x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a th\u1ee7y tinh, mang l\u1ea1i \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc cao v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc tuy\u1ec7t v\u1eddi. V\u00ec l\u00fd do n\u00e0y, c\u00e1t th\u1ea1ch anh l\u00e0 nguy\u00ean li\u1ec7u kho\u00e1ng c\u00f4ng nghi\u1ec7p quan tr\u1ecdng nh\u1ea5t trong ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ee7y tinh. N\u00f3 l\u00e0 th\u00e0nh ph\u1ea7n ch\u00ednh trong m\u1ecdi th\u1ee9, t\u1eeb k\u00ednh ph\u1eb3ng v\u00e0 k\u00ednh \u0111\u1ef1ng \u0111\u1ebfn k\u00ednh si\u00eau trong, k\u00ednh quang \u0111i\u1ec7n v\u00e0 th\u1eadm ch\u00ed c\u1ea3 k\u00ednh th\u1ea1ch anh.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ee7y tinh, ch\u1ea5t l\u01b0\u1ee3ng c\u00e1t th\u1ea1ch anh quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. Ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y \u0111\u00e1nh gi\u00e1 c\u00e1t th\u1ea1ch anh ch\u1ee7 y\u1ebfu th\u00f4ng qua ba ti\u00eau ch\u00ed quan tr\u1ecdng:<\/p>\n\n\n\n<p>&#8211;&nbsp;<strong>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/strong>&nbsp;\u2013 \u0110\u1ed9 tinh khi\u1ebft v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ea1p ch\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 s\u1eaft v\u00e0 alumina.<\/p>\n\n\n\n<p>&#8211;&nbsp;<strong>T\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh<\/strong>&nbsp;\u2013 Ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa c\u00e1c l\u00f4 h\u00e0ng.<\/p>\n\n\n\n<p>&#8211; <strong>Ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t<\/strong>&nbsp;\u2013 K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng h\u1ea1t ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed3ng nh\u1ea5t.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i th\u1ee7y tinh \u0111\u1ec1u gi\u1ed1ng nhau, v\u00e0 m\u1ed7i lo\u1ea1i s\u1ea3n ph\u1ea9m th\u1ee7y tinh l\u1ea1i y\u00eau c\u1ea7u lo\u1ea1i c\u00e1t th\u1ea1ch anh c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c nhau. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u xem nh\u1eefng y\u00eau c\u1ea7u n\u00e0y \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u1ee7y tinh ch\u00ednh.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"http:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-1024x683.webp\" alt=\"M\u00e1y nghi\u1ec1n tia n\u01b0\u1edbc d\u00f9ng cho th\u1ea1ch anh tinh khi\u1ebft cao\" class=\"wp-image-16344\" style=\"width:926px;height:auto\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-1024x683.webp 1024w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-300x200.webp 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-768x512.webp 768w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-18x12.webp 18w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz-600x400.webp 600w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2026\/02\/Jet-Mill-for-High-Purity-Quartz.webp 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">M\u00e1y nghi\u1ec1n Jet Mill c\u1ee7a Epic Powder d\u00f9ng cho th\u1ea1ch anh tinh khi\u1ebft cao.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">1. Ph\u00e2n lo\u1ea1i c\u00e1t th\u1ea1ch anh cho ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ee7y tinh<\/h2>\n\n\n\n<p>Ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p Trung Qu\u1ed1c quy \u0111\u1ecbnh h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra c\u00e1t th\u1ea1ch anh \u0111\u00e3 qua x\u1eed l\u00fd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i s\u1ea3n xu\u1ea5t th\u1ee7y tinh. Ti\u00eau chu\u1ea9n n\u00e0y ti\u1ebfp t\u1ee5c \u0111\u00f3ng vai tr\u00f2 l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o c\u01a1 b\u1ea3n cho c\u00e1c nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ee7y tinh, gi\u00fap h\u1ecd l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i c\u00e1t ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng d\u1ef1 \u0111\u1ecbnh.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>C\u1ea5p<\/strong><strong><\/strong><\/td><td><strong>T\u00ean<\/strong><strong><\/strong><\/td><td><strong>SiO\u2082 \u2265 (%)<\/strong><strong><\/strong><\/td><td><strong>Fe\u2082O\u2083 (ppm)<\/strong><strong><\/strong><\/td><td><strong>Cr (ppm)<\/strong><strong><\/strong><\/td><td><strong>Al (ppm)<\/strong><strong><\/strong><\/td><td><strong>Ti (ppm)<\/strong><strong><\/strong><\/td><td><strong>Li (ppm)<\/strong><strong><\/strong><\/td><td><strong>Na (ppm)<\/strong><strong><\/strong><\/td><td><strong>K (ppm)<\/strong><strong><\/strong><\/td><td><strong>M\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng khi \u0111\u00e1nh l\u1eeda \u2264 (%)<\/strong><strong><\/strong><\/td><\/tr><tr><td>1<\/td><td>C\u00e1t th\u1ea1ch anh si\u00eau tinh khi\u1ebft<\/td><td>99.98<\/td><td>2<\/td><td>0.5<\/td><td>30<\/td><td>2<\/td><td>3<\/td><td>3<\/td><td>3<\/td><td>0.1<\/td><\/tr><tr><td>2<\/td><td>C\u00e1t th\u1ea1ch anh tinh khi\u1ebft cao<\/td><td>99.98<\/td><td>4<\/td><td>0.5<\/td><td>70<\/td><td>3<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>3<\/td><td>C\u00e1t th\u1ea1ch anh n\u1ed5i<\/td><td>99.95<\/td><td>20<\/td><td>1.0<\/td><td>\u2013<\/td><td>5<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>4<\/td><td>C\u00e1t th\u1ea1ch anh \u0111\u01b0\u1ee3c r\u1eeda b\u1eb1ng axit<\/td><td>99.6<\/td><td>50<\/td><td>2.0<\/td><td>\u2013<\/td><td>300<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>5<\/td><td>C\u00e1t th\u1ea1ch anh th\u1ee7y tinh tinh th\u1ec3<\/td><td>99.0<\/td><td>200<\/td><td>2.0<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>6<\/td><td>C\u00e1t th\u1ea1ch anh th\u1ee7y tinh ph\u00f2ng th\u00ed nghi\u1ec7m<\/td><td>99.0<\/td><td>300<\/td><td>2.0<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>7<\/td><td>C\u00e1t th\u1ea1ch anh th\u00f4ng th\u01b0\u1eddng<\/td><td>98.5<\/td><td>400<\/td><td>6.0<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>8<\/td><td>C\u00e1t th\u1ea1ch anh th\u00f4ng th\u01b0\u1eddng<\/td><td>98.5<\/td><td>600<\/td><td>6.0<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td>9<\/td><td>C\u00e1t th\u1ea1ch anh ch\u1ecbu nhi\u1ec7t<\/td><td>97.0<\/td><td>2000<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2. K\u00ednh ph\u1eb3ng<\/h2>\n\n\n\n<p>K\u00ednh ph\u1eb3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng h\u1ea1 ngu\u1ed3n, v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a c\u00e1t th\u1ea1ch anh c\u0169ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u01b0\u01a1ng \u1ee9ng. Nh\u00ecn chung, ng\u00e0nh c\u00f4ng nghi\u1ec7p k\u00ednh ph\u1eb3ng ph\u00e2n lo\u1ea1i c\u00e1t th\u1ea1ch anh th\u00e0nh hai lo\u1ea1i d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lo\u1ea1i I: H\u00e0m l\u01b0\u1ee3ng Al\u2082O\u2083 th\u1ea5p<\/li>\n\n\n\n<li>Lo\u1ea1i II: H\u00e0m l\u01b0\u1ee3ng Al\u2082O\u2083 cao h\u01a1n<\/li>\n<\/ul>\n\n\n\n<p>Ti\u00eau chu\u1ea9n chuy\u00ean ng\u00e0nh JC\/T 529-2000 \u201cNguy\u00ean li\u1ec7u silic cho k\u00ednh ph\u1eb3ng\u201d quy \u0111\u1ecbnh chi ti\u1ebft c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t. C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh nh\u01b0 sau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 \u1ea9m \u0111\u1ed1i v\u1edbi c\u00e1t th\u1ea1ch anh th\u1ee7y tinh ph\u1eb3ng<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>C\u00e1t th\u1ea1ch anh lo\u1ea1i<\/strong><strong><\/strong><\/td><td><strong>w(SiO\u2082) \/ %<\/strong><strong><\/strong><\/td><td><strong>w(Al\u2082O\u2083) \/ %<\/strong><strong><\/strong><\/td><td><strong>w(Fe\u2082O\u2083) \/ %<\/strong><strong><\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>w(H\u2082O) \/ %<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>L\u1edbp I<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u22645,00<\/td><\/tr><tr><td>Ph\u1ea7n th\u01b0\u1edfng<\/td><td>\u226598,50<\/td><td>\u22640,50<\/td><td>\u22640,05<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>\u226598,00<\/td><td>\u22641,20<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u226598,50<\/td><td>\u22640,70<\/td><td>\u22640,10<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>\u226597,50<\/td><td>\u22641,20<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>\u226598,00<\/td><td>\u22640,70<\/td><td>\u22640,15<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>\u226596,50<\/td><td>\u22641,50<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>L\u1edbp ba<\/td><td>\u226598,00<\/td><td>\u22640,70<\/td><td>\u22640,20<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>\u226596,50<\/td><td>\u22641,50<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td><strong>L\u1edbp II<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u226592,00<\/td><td>\u22644,00<\/td><td>\u22640,20<\/td><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>\u226590,50<\/td><td>\u22644,50<\/td><td>\u22640,30<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">Sai l\u1ec7ch cho ph\u00e9p v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111\u1ed1i v\u1edbi c\u00e1t th\u1ea1ch anh th\u1ee7y tinh ph\u1eb3ng<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>C\u00e1t th\u1ea1ch anh lo\u1ea1i<\/strong><strong><\/strong><\/td><td><strong>Bi\u1ebfn thi\u00ean SiO\u2082 \/ %<\/strong><strong><\/strong><\/td><td><strong>Bi\u1ebfn th\u1ec3 Al\u2082O\u2083 \/ %<\/strong><strong><\/strong><\/td><td><strong>Bi\u1ebfn th\u1ec3 Fe\u2082O\u2083 \/ %<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>L\u1edbp I<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Ph\u1ea7n th\u01b0\u1edfng<\/td><td>\u00b10,20<\/td><td>\u00b10,10<\/td><td>\u00b10,01<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u00b10,30<\/td><td>\u00b10,15<\/td><td>\u2013<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>\u00b10,30<\/td><td>\u00b10,20<\/td><td>\u2013<\/td><\/tr><tr><td>L\u1edbp ba<\/td><td>\u00b10,30<\/td><td>\u00b10,20<\/td><td>\u2013<\/td><\/tr><tr><td><strong>L\u1edbp II<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u00b10,30<\/td><td>\u00b10,20<\/td><td>\u2013<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>\u00b10,30<\/td><td>\u00b10,20<\/td><td>\u2013<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">Y\u00eau c\u1ea7u v\u1ec1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ed1i v\u1edbi c\u00e1t th\u1ea1ch anh th\u1ee7y tinh ph\u1eb3ng<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>C\u00e1t th\u1ea1ch anh lo\u1ea1i<\/strong><strong><\/strong><\/td><td><strong>+1 mm<\/strong><strong><\/strong><\/td><td><strong>+710 \u03bcm<\/strong><strong><\/strong><\/td><td><strong>+500 \u03bcm<\/strong><strong><\/strong><\/td><td><strong>\u2013100 \u03bcm (\u2013125 \u03bcm)<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>L\u1edbp I<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Ph\u1ea7n th\u01b0\u1edfng<\/td><td>\u22640 (0)<\/td><td>\u22640,5 (0,5)<\/td><td>\u22645,0 (5,0)<\/td><td>\u22645,0 (5,0)<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u22640 (0)<\/td><td>\u22640,5 (0,5)<\/td><td>\u22645,0 (5,0)<\/td><td>\u226410,0 (5,0)<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u226420,0 (8,0)<\/td><\/tr><tr><td>L\u1edbp ba<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td><strong>L\u1edbp II<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>L\u1edbp M\u1ed9t<\/td><td>\u22640 (0)<\/td><td>\u22640,5 (0,5)<\/td><td>\u22645,0 (5,0)<\/td><td>\u22645.0<\/td><\/tr><tr><td>L\u1edbp Hai<\/td><td>\u22640 (0)<\/td><td>\u22640,5 (0,5)<\/td><td>\u22645,0 (5,0)<\/td><td>\u22645.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Ghi ch\u00fa:<\/strong>&nbsp;C\u00e1c gi\u00e1 tr\u1ecb trong ngo\u1eb7c \u0111\u01a1n bi\u1ec3u th\u1ecb c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m c\u00e1t silica t\u1ef1 nhi\u00ean.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Th\u1ee7y tinh \u0111\u1ef1ng v\u00e0 th\u1ee7y tinh gia d\u1ee5ng<\/h2>\n\n\n\n<p>C\u00e1c s\u1ea3n ph\u1ea9m th\u1ee7y tinh gia d\u1ee5ng v\u00e0 th\u1ee7y tinh \u0111\u1ef1ng bao g\u1ed3m chai l\u1ecd, \u0111\u1ed3 d\u00f9ng \u0103n u\u1ed1ng, d\u1ee5ng c\u1ee5 th\u1ee7y tinh ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 th\u1ee7y tinh d\u01b0\u1ee3c ph\u1ea9m. Ch\u00fang ph\u1ee5c v\u1ee5 cho ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m, \u0111\u1ed3 u\u1ed1ng, r\u01b0\u1ee3u v\u00e0 y t\u1ebf. C\u00e1t th\u1ea1ch anh chi\u1ebfm t\u1ef7 l\u1ec7 l\u1edbn trong h\u1ed7n h\u1ee3p nguy\u00ean li\u1ec7u c\u1ee7a ph\u00e2n kh\u00fac n\u00e0y.<\/p>\n\n\n\n<p>V\u00ec nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a c\u00e1t th\u1ea1ch anh v\u00e0o kho\u1ea3ng 1730\u00b0C, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u00e1t c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn qu\u00e1 tr\u00ecnh t\u1ea1o th\u1ee7y tinh v\u00e0 hi\u1ec7u su\u1ea5t n\u00f3ng ch\u1ea3y. Trong s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf, ng\u01b0\u1eddi ta th\u01b0\u1eddng \u01b0u ti\u00ean c\u00e1c h\u1ea1t th\u1ea1ch anh c\u00f3 h\u00ecnh d\u1ea1ng g\u00f3c c\u1ea1nh v\u00ec di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t l\u1edbn h\u01a1n gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 ph\u00e2n t\u00e1ch m\u1ebb s\u1ea3n ph\u1ea9m. Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1ed1i \u01b0u cho \u1ee9ng d\u1ee5ng n\u00e0y th\u01b0\u1eddng l\u00e0 t\u1eeb 60 \u0111\u1ebfn 140 mesh.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi \u0111\u1ed3 d\u00f9ng \u0103n u\u1ed1ng cao c\u1ea5p v\u00e0 d\u1ee5ng c\u1ee5 th\u1ee7y tinh, ti\u00eau chu\u1ea9n th\u0103m d\u00f2 \u0111\u1ecba ch\u1ea5t DZ\/T 0207-2002 \u0111\u01b0a ra c\u00e1c y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi nguy\u00ean li\u1ec7u th\u00f4 ch\u1ee9a silic. <\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">Y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi c\u00e1t th\u1ea1ch anh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong d\u1ee5ng c\u1ee5 th\u1ee7y tinh ph\u00f2ng th\u00ed nghi\u1ec7m<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>M\u1ee5c \/ Tham s\u1ed1<\/strong><strong><\/strong><\/td><td><strong>L\u1edbp M\u1ed9t<\/strong><strong><\/strong><\/td><td><strong>L\u1edbp Hai<\/strong><strong><\/strong><\/td><td><strong>L\u1edbp ba<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>w(SiO\u2082) \/ %<\/td><td>&gt;99<\/td><td>&gt;96<\/td><td>&gt;90<\/td><\/tr><tr><td>w(Al\u2082O\u2083) \/ %<\/td><td>&lt;1.0<\/td><td>&lt;2.0<\/td><td>&lt;4.0<\/td><\/tr><tr><td>w(Fe\u2082O\u2083) \/ %<\/td><td>&lt;0,05<\/td><td>&lt;0,10<\/td><td>&lt;0,35<\/td><\/tr><tr><td>w(Cr\u2082O\u2083) \/ %<\/td><td>&lt;0,001<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td><strong>Ghi ch\u00fa<\/strong><\/td><td>\u0110\u1ed3 th\u1ee7y tinh (kh\u00f4ng bao g\u1ed3m th\u1ee7y tinh pha l\u00ea)<\/td><td>Th\u1ee7y tinh ph\u00f2ng th\u00ed nghi\u1ec7m th\u00f4ng d\u1ee5ng, th\u1ee7y tinh kh\u00f4ng m\u00e0u<\/td><td>D\u00f9ng cho chai th\u1ee7y tinh th\u00f4ng th\u01b0\u1eddng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">4. K\u00ednh si\u00eau trong su\u1ed1t<\/h2>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">K\u00ednh si\u00eau trong l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u cao c\u1ea5p n\u1ed5i ti\u1ebfng v\u1edbi kh\u1ea3 n\u0103ng truy\u1ec1n \u00e1nh s\u00e1ng c\u1ef1c cao (\u226591,5%), h\u00e0m l\u01b0\u1ee3ng s\u1eaft r\u1ea5t th\u1ea5p (th\u01b0\u1eddng l\u00e0 100\u2013150 ppm) v\u00e0 \u0111\u1ed9 trong su\u1ed1t nh\u01b0 pha l\u00ea. N\u00f3 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 k\u00ednh \u00edt s\u1eaft ho\u1eb7c k\u00ednh c\u00f3 \u0111\u1ed9 trong su\u1ed1t cao.<\/p>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">S\u1ea3n xu\u1ea5t th\u1ee7y tinh si\u00eau trong \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p nghi\u00eam ng\u1eb7t c\u00e1c nguy\u00ean li\u1ec7u th\u00f4, bao g\u1ed3m c\u00e1t th\u1ea1ch anh, fenspat, dolomit, \u0111\u00e1 v\u00f4i, soda ash, nh\u00f4m hydroxit, mu\u1ed1i b\u00e1nh, natri pyroantimonat v\u00e0 antimon trioxit. Trong s\u1ed1 n\u00e0y, SiO\u2082 chi\u1ebfm kho\u1ea3ng 71,0\u201373,01 TP3T c\u1ee7a m\u1ebb s\u1ea3n xu\u1ea5t, v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t c\u00f3 h\u1ea1i \u2013 \u0111\u1eb7c bi\u1ec7t l\u00e0 s\u1eaft \u2013 h\u1ea7u nh\u01b0 ho\u00e0n to\u00e0n \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o th\u00f4ng qua c\u00e1t th\u1ea1ch anh. Do \u0111\u00f3, qu\u00e1 tr\u00ecnh tinh ch\u1ebf c\u00e1t th\u1ea1ch anh t\u1eadp trung ch\u1ee7 y\u1ebfu v\u00e0o vi\u1ec7c lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t s\u1eaft.<\/p>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">Khi h\u00e0m l\u01b0\u1ee3ng s\u1eaft v\u01b0\u1ee3t qu\u00e1 m\u1ed9t ng\u01b0\u1ee1ng nh\u1ea5t \u0111\u1ecbnh, kh\u00f4ng ch\u1ec9 \u0111\u1ed9 truy\u1ec1n \u00e1nh s\u00e1ng gi\u1ea3m \u0111\u00e1ng k\u1ec3 m\u00e0 oxit s\u1eaft c\u00f2n h\u1ea5p th\u1ee5 b\u1ee9c x\u1ea1 nhi\u1ec7t trong qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u1edbn gi\u1eefa l\u1edbp tr\u00ean v\u00e0 l\u1edbp d\u01b0\u1edbi c\u1ee7a th\u1ee7y tinh n\u00f3ng ch\u1ea3y, khi\u1ebfn qu\u00e1 tr\u00ecnh \u0111\u1ed1i l\u01b0u tr\u1edf n\u00ean kh\u00f3 kh\u0103n v\u00e0 l\u00e0m ph\u1ee9c t\u1ea1p th\u00eam qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y v\u00e0 tinh ch\u1ebf. V\u00ec l\u00fd do n\u00e0y, h\u00e0m l\u01b0\u1ee3ng s\u1eaft trong nguy\u00ean li\u1ec7u silica l\u00e0 th\u00f4ng s\u1ed1 thi\u1ebft k\u1ebf quan tr\u1ecdng nh\u1ea5t. Y\u00eau c\u1ea7u v\u1ec1 s\u1eaft \u0111i\u1ec3n h\u00ecnh \u0111\u1ed1i v\u1edbi c\u00e1t th\u1ea1ch anh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ee7y tinh si\u00eau trong l\u00e0:<\/p>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">\u2013 Fe\u2082O\u2083 \u2264 150 ppm<\/p>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">\u2013 Fe \u2264 80 ppm<\/p>\n\n\n\n<p class=\"has-text-align-left\" style=\"font-size:15px\">C\u00e1c v\u1eadt li\u1ec7u th\u1ea1ch anh t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m c\u00e1t th\u1ea1ch anh t\u1ef1 nhi\u00ean, \u0111\u00e1 sa th\u1ea1ch th\u1ea1ch anh, th\u1ea1ch anh tinh th\u1ec3 v\u00e0 th\u1ea1ch anh m\u1ea1ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-medium-font-size\">Gi\u00e1 tr\u1ecb ki\u1ec3m so\u00e1t \u0111\u1ed1i v\u1edbi oxit ho\u1ea1t t\u00ednh v\u00e0 t\u1ea1p ch\u1ea5t c\u00f3 h\u1ea1i trong nguy\u00ean li\u1ec7u th\u00f4 d\u00f9ng cho th\u1ee7y tinh si\u00eau tr\u1eafng (\u0110\u01a1n v\u1ecb: wt%)<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Nguy\u00ean li\u1ec7u th\u00f4<\/strong><strong><\/strong><\/td><td><strong>SiO\u2082<\/strong><strong><\/strong><\/td><td><strong>Al\u2082O\u2083<\/strong><strong><\/strong><\/td><td><strong>Fe\u2082O\u2083<\/strong><strong><\/strong><\/td><td><strong>CaO<\/strong><strong><\/strong><\/td><td><strong>MgO<\/strong><strong><\/strong><\/td><td><strong>Na\u2082CO\u2083<\/strong><strong><\/strong><\/td><td><strong>TiO\u2082<\/strong><strong><\/strong><\/td><td><strong>NaCl<\/strong><strong><\/strong><\/td><\/tr><tr><td>C\u00e1t th\u1ea1ch anh<\/td><td>\u226598,5 \u00b10,3<\/td><td>\u22641,0 \u00b10,q<\/td><td>\u22640,01 \u00b10,001<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u22640,1 \u00b10,01<\/td><td>&nbsp;<\/td><\/tr><tr><td>Feldspar<\/td><td>&lt;70 \u00b10,6<\/td><td>\u226515 \u00b10,25<\/td><td>&lt;0,15 \u00b10,05<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>\u0110\u00e1 Dolomit<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u226530 \u00b10,3<\/td><td>\u226520 \u00b10,3<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>\u0110\u00e1 v\u00f4i<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u22640,018<\/td><td>\u226552<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Thanh gi\u1eb1ng n\u1eb7ng<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u22640,001<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&gt;99,0 \u00b10,1<\/td><td>&nbsp;<\/td><td>&lt;0,3<\/td><\/tr><tr><td>Nh\u00f4m oxit<\/td><td>\u226563,5 \u00b10,1<\/td><td>\u22640,001<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Mu\u1ed1i Glauber (Na\u2082SO\u2084)<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>Fe\u2082O\u2083 \u22640,001<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>Na\u2082SO\u2084 \u226599 \u00b10,1<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Natri antimonat (Na\u2083SbO\u2084)<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>Fe\u2082O\u2083 \u22640,055%<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>Sb\u2082O\u2085 \u226564%<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Antimon trioxit (Sb\u2082O\u2083)<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td><\/td><td><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ghi ch\u00fa: Ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c gia Sb\u2082O\u2083 c\u1ea5p 0. Th\u00e0nh ph\u1ea7n ch\u00ednh trong nguy\u00ean li\u1ec7u th\u00f4 l\u00e0 \u226599,5%. K\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh l\u00e0 1,3\u20131,5 \u03bcm, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh l\u00e0 0,3\u20130,35 \u03bcm, v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong ph\u1ea1m vi 5 \u03bcm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. K\u00ednh quang \u0111i\u1ec7n (n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi)<\/h2>\n\n\n\n<p>K\u00ednh quang \u0111i\u1ec7n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t l\u00e0m l\u1edbp ngo\u00e0i c\u00f9ng c\u1ee7a c\u00e1c m\u00f4-\u0111un n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi. Nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3 l\u00e0 b\u1ea3o v\u1ec7 c\u00e1c t\u1ebf b\u00e0o quang \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n c\u1ef1c b\u1eb1ng c\u00e1ch ng\u0103n ch\u1eb7n h\u01a1i \u1ea9m v\u00e0 kh\u00ed \u0103n m\u00f2n, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi xuy\u00ean qua t\u1ed1i \u0111a. So v\u1edbi k\u00ednh th\u00f4ng th\u01b0\u1eddng, k\u00ednh quang \u0111i\u1ec7n ph\u1ea3i c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft th\u1ea5p h\u01a1n, \u0111\u1ed9 truy\u1ec1n \u00e1nh s\u00e1ng cao h\u01a1n, kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp, ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p>C\u00f3 hai lo\u1ea1i k\u00ednh \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nh\u1eefng y\u00eau c\u1ea7u n\u00e0y: k\u00ednh n\u1ed5i si\u00eau trong v\u00e0 k\u00ednh c\u00e1n (k\u00ednh hoa v\u0103n) si\u00eau trong. K\u00ednh c\u00e1n l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn cho c\u00e1c t\u1ebf b\u00e0o quang \u0111i\u1ec7n silicon tinh th\u1ec3, trong khi k\u00ednh n\u1ed5i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n cho c\u00e1c m\u00f4-\u0111un n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi m\u00e0ng m\u1ecfng.<\/p>\n\n\n\n<p>C\u00e1c ion s\u1eaft trong c\u00e1t th\u1ea1ch anh d\u1ec5 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ed5i m\u00e0u, l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eabn \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi. Do \u0111\u00f3, k\u00ednh quang \u0111i\u1ec7n c\u1ea7n c\u00e1t th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft silica cao v\u00e0 h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t r\u1ea5t th\u1ea5p \u2013 c\u1ee5 th\u1ec3 l\u00e0 c\u00e1t th\u1ea1ch anh c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft th\u1ea5p. Ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p JC\/T 2314-2015 \u201cNguy\u00ean li\u1ec7u th\u00f4 ch\u1ee9a silica cho k\u00ednh quang \u0111i\u1ec7n\u201d quy \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u1ea5t l\u01b0\u1ee3ng li\u00ean quan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">Y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u alumina-silica<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>M\u1ee5c \/ Tham s\u1ed1<\/strong><strong><\/strong><\/td><td><strong>L\u1edbp M\u1ed9t<\/strong><strong><\/strong><\/td><td><strong>L\u1edbp Hai<\/strong><strong><\/strong><\/td><\/tr><tr><td>SiO\u2082 \/ % \u2265<\/td><td>99.5<\/td><td>99.0<\/td><\/tr><tr><td>Al\u2082O\u2083 \/ % \u2264<\/td><td>0.20<\/td><td>0.50<\/td><\/tr><tr><td>TiO\u2082 \/ mg\/kg \u2264<\/td><td>10<\/td><td>20<\/td><\/tr><tr><td>Fe\u2082O\u2083 \/ mg\/kg \u2264<\/td><td>60<\/td><td>80<\/td><\/tr><tr><td>Cr\u2082O\u2083 \/ mg\/kg \u2264<\/td><td>2<\/td><td>5<\/td><\/tr><tr><td>C\u1eb7n c\u00f2n l\u1ea1i tr\u00ean r\u00e2y 1,0 mm \/ %<\/td><td>0<\/td><td>0<\/td><\/tr><tr><td>L\u01b0\u1ee3ng c\u1eb7n tr\u00ean s\u00e0ng 0,6 mm \/ % \u2264<\/td><td>1.5<\/td><td>1.5<\/td><\/tr><tr><td>L\u01b0\u1ee3ng c\u1eb7n tr\u00ean s\u00e0ng 0,1 mm \/ % \u2264<\/td><td>5.0<\/td><td>5.0<\/td><\/tr><tr><td>\u0110\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc \/ % \u2264<\/td><td>5.0<\/td><td>5.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">6. Th\u1ee7y tinh th\u1ea1ch anh<\/h2>\n\n\n\n<p>Th\u1ee7y tinh th\u1ea1ch anh l\u00e0 vi\u00ean ng\u1ecdc qu\u00fd trong c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u th\u1ee7y tinh. \u0110\u00e2y l\u00e0 lo\u1ea1i th\u1ee7y tinh SiO\u2082 \u0111\u01a1n th\u00e0nh ph\u1ea7n, s\u1edf h\u1eefu c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc, nhi\u1ec7t h\u1ecdc, quang h\u1ecdc v\u00e0 \u0111i\u1ec7n h\u1ecdc v\u01b0\u1ee3t tr\u1ed9i. N\u00f3 \u0111\u00f3ng vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu trong ch\u1ea5t b\u00e1n d\u1eabn, thi\u1ebft b\u1ecb quang h\u1ecdc, truy\u1ec1n th\u00f4ng quang h\u1ecdc v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi.<\/p>\n\n\n\n<p>Ng\u00e0y nay, c\u00e1t th\u1ea1ch anh tinh khi\u1ebft cao \u0111\u00e3 thay th\u1ebf tinh th\u1ec3 t\u1ef1 nhi\u00ean l\u00e0m nguy\u00ean li\u1ec7u th\u00f4 ch\u00ednh \u0111\u1ec3 n\u1ea5u ch\u1ea3y th\u1ee7y tinh th\u1ea1ch anh. Cho d\u00f9 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p nung ch\u1ea3y b\u1eb1ng \u0111i\u1ec7n hay nung ch\u1ea3y b\u1eb1ng ng\u1ecdn l\u1eeda, c\u00e1t th\u1ea1ch anh tinh khi\u1ebft cao v\u1eabn l\u00e0 nguy\u00ean li\u1ec7u ban \u0111\u1ea7u kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 s\u1ea3n xu\u1ea5t \u1ed1ng, thanh v\u00e0 th\u1ecfi th\u1ee7y tinh th\u1ea1ch anh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">T\u00ednh ch\u1ea5t v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>KH\u00d4NG.<\/strong><strong><\/strong><\/td><td><strong>T\u00e0i s\u1ea3n<\/strong><strong><\/strong><\/td><td><strong>\u0110\u1eb7c \u0111i\u1ec3m \/ T\u00ednh n\u0103ng<\/strong><strong><\/strong><\/td><\/tr><tr><td>\u2460<\/td><td>\u0110\u1ed9 trong su\u1ed1t quang h\u1ecdc t\u1ed1t<\/td><td>\u0110\u1ed9 truy\u1ec1n d\u1eabn c\u1ef1c cao tr\u00ean to\u00e0n ph\u1ed5 tia c\u1ef1c t\u00edm, \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y v\u00e0 tia h\u1ed3ng ngo\u1ea1i: \u0111\u1ed9 truy\u1ec1n d\u1eabn tia c\u1ef1c t\u00edm &gt;80%; \u0111\u1ed9 truy\u1ec1n d\u1eabn \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y &gt;92%<\/td><\/tr><tr><td>\u2461<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao<\/td><td>\u0110i\u1ec3m h\u00f3a m\u1ec1m: 1730 \u00b0C Nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng l\u00e2u d\u00e0i: l\u00ean \u0111\u1ebfn 1100 \u00b0C Nhi\u1ec7t \u0111\u1ed9 s\u1eed d\u1ee5ng ng\u1eafn h\u1ea1n: l\u00ean \u0111\u1ebfn 1450 \u00b0C<\/td><\/tr><tr><td>\u2462<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/td><td>Ch\u1ecbu \u0111\u01b0\u1ee3c axit flohydric v\u00e0 axit photphoric n\u00f3ng; h\u1ea7u nh\u01b0 kh\u00f4ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c lo\u1ea1i axit kh\u00e1c.<\/td><\/tr><tr><td>\u2463<\/td><td>Kh\u1ea3 n\u0103ng ch\u00e2n kh\u00f4ng cao<\/td><td>\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 10\u207b\u2076 Pa<\/td><\/tr><tr><td>\u2464<\/td><td>Kh\u1ea3 n\u0103ng c\u00e1ch \u0111i\u1ec7n tuy\u1ec7t v\u1eddi<\/td><td>\u0110i\u1ec7n tr\u1edf su\u1ea5t: 1,8\u00d710\u00b9\u2079 \u03a9\u00b7cm \u1edf 20 \u00b0C; 1,6\u00d710\u00b9\u2076 \u03a9\u00b7cm \u1edf 800 \u00b0C<\/td><\/tr><tr><td>\u2465<\/td><td>\u0110\u1ed9 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p<\/td><td>C\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t; b\u1eb1ng kho\u1ea3ng 1\/20 so v\u1edbi k\u00ednh th\u00f4ng th\u01b0\u1eddng.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ch\u1eafc ch\u1eafn r\u1ed3i! \u0110\u00e2y l\u00e0 hai b\u1ea3ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng g\u1ecdn g\u00e0ng b\u1eb1ng Markdown, s\u1eb5n s\u00e0ng \u0111\u1ec3 b\u1ea1n sao ch\u00e9p tr\u1ef1c ti\u1ebfp v\u00e0o trang web c\u1ee7a m\u00ecnh:<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">B\u1ea3ng 5-1: Y\u00eau c\u1ea7u v\u1ec1 nguy\u00ean t\u1ed1 t\u1ea1p ch\u1ea5t c\u1ee7a c\u00e1t th\u1ea1ch anh d\u00f9ng cho th\u1ee7y tinh th\u1ea1ch anh<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th><strong>\u1ee8ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<\/strong><\/th><th><strong>Ngu\u1ed3n g\u1ed1c<\/strong><\/th><th><strong>Al (ppm)<\/strong><\/th><th><strong>S\u1eaft (ppm)<\/strong><\/th><th><strong>Ti (ppm)<\/strong><\/th><th><strong>Ca (ppm)<\/strong><\/th><th><strong>B (ppm)<\/strong><\/th><th><strong>K (ppm)<\/strong><\/th><th><strong>Na (ppm)<\/strong><\/th><th><strong>Li (ppm)<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Ngu\u1ed3n s\u00e1ng \u0111i\u1ec7n<\/td><td>Trung Qu\u1ed1c<\/td><td>T\u1ed5ng c\u1ed9ng 50\u2013100 ppm<\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><td>50\u2013100 <\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>C\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t<\/td><td>ti\u1ebfng S\u00e9c<\/td><td>42<\/td><td>3.0<\/td><td>3.0<\/td><td>8.0<\/td><td>\/<\/td><td>18.0<\/td><td>5.0<\/td><td>\/<\/td><\/tr><tr><td>Ch\u1ea5t b\u00e1n d\u1eabn<\/td><td>Trung Qu\u1ed1c<\/td><td>20<\/td><td>0.18<\/td><td>0.5<\/td><td>0.1<\/td><td>0.1<\/td><td>0.2<\/td><td>4.0<\/td><td>1.8<\/td><\/tr><tr><td>B\u00e1n d\u1eabn (Lo\u1ea1i cao c\u1ea5p)<\/td><td>Hoa K\u1ef3<\/td><td>15<\/td><td>0.3<\/td><td>\/<\/td><td>0.4<\/td><td>0.1<\/td><td>0.7<\/td><td>0.9<\/td><td>0.7<\/td><\/tr><tr><td>B\u00e1n d\u1eabn (Lo\u1ea1i cao c\u1ea5p)<\/td><td>Nga<\/td><td>14<\/td><td>0.9<\/td><td>0.4<\/td><td>0.1<\/td><td>\/<\/td><td>0.3<\/td><td>0.6<\/td><td>\/<\/td><\/tr><tr><td>\u1ed0ng s\u1ee3i quang<\/td><td>Brazil<\/td><td>11<\/td><td>1.8<\/td><td>0.4<\/td><td>0.1<\/td><td>\/<\/td><td>0.3<\/td><td>0.4<\/td><td>\/<\/td><\/tr><tr><td>Th\u1ea5u k\u00ednh quang h\u1ecdc<\/td><td>Hoa K\u1ef3<\/td><td>8<\/td><td>0.05<\/td><td>\/<\/td><td>0.7<\/td><td>0.04<\/td><td>0.05<\/td><td>0.05<\/td><td>0.2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Ghi ch\u00fa:<\/strong> C\u00e1c \u00f4 tr\u1ed1ng bi\u1ec3u th\u1ecb kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n c\u1ee5 th\u1ec3 ho\u1eb7c d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 s\u1eb5n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:15px\">B\u1ea3ng 5-2: Y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a c\u00e1t th\u1ea1ch anh d\u00f9ng cho th\u1ee7y tinh th\u1ea1ch anh<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Qu\u00e1 tr\u00ecnh<\/strong><\/th><th><strong>L\u00f2 \u0111i\u1ec7n tr\u1edf<\/strong><\/th><th><strong>L\u00f2 n\u1ea5u ch\u1ea3y li\u00ean t\u1ee5c trong n\u01b0\u1edbc<\/strong><\/th><th><strong>L\u00f2 n\u1ea5u ch\u1ea3y li\u00ean t\u1ee5c n\u01b0\u1edbc ngo\u00e0i<\/strong><\/th><th><strong>Ph\u1ea3n \u1ee9ng t\u1ed5ng h\u1ee3p ng\u1ecdn l\u1eeda oxyhydro<\/strong><\/th><th><strong>Huy\u1ebft t\u01b0\u01a1ng<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>K\u00edch th\u01b0\u1edbc h\u1ea1t (l\u01b0\u1edbi)<\/strong><\/td><td>40\u201380<\/td><td>60\u2013120<\/td><td>80\u2013140<\/td><td>80\u2013200<\/td><td>120\u201320<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn lo\u1ea1i c\u00e1t th\u1ea1ch anh ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng th\u1ee7y tinh c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n<p>T\u1eeb k\u00ednh ph\u1eb3ng ti\u00eau chu\u1ea9n \u0111\u1ebfn c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe c\u1ee7a k\u00ednh si\u00eau trong, k\u00ednh quang \u0111i\u1ec7n v\u00e0 k\u00ednh th\u1ea1ch anh, ch\u1ea5t l\u01b0\u1ee3ng c\u00e1t th\u1ea1ch anh quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t, hi\u1ec7u qu\u1ea3 v\u00e0 chi ph\u00ed s\u1ea3n ph\u1ea9m. Hi\u1ec3u r\u00f5 c\u00e1c ti\u00eau chu\u1ea9n ch\u00ednh x\u00e1c \u2013 bao g\u1ed3m \u0111\u1ed9 tinh khi\u1ebft h\u00f3a h\u1ecdc, h\u00e0m l\u01b0\u1ee3ng s\u1eaft v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t \u2013 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 s\u1ea3n xu\u1ea5t k\u00ednh ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"T\u1ea1i sao b\u1ed9t th\u1ea1ch anh cao c\u1ea5p ph\u1ea3i s\u1eed d\u1ee5ng m\u00e1y ph\u00e2n lo\u1ea1i ITC? H\u01b0\u1edbng d\u1eabn n\u00e2ng cao v\u1ec1 b\u1ed9t th\u1ea1ch anh si\u00eau m\u1ecbn.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/rmUCItF9uT0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#cf2e2e\" class=\"has-inline-color\">B\u1ed9t Epic<\/mark><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.quartz-grinding.com\/\">B\u1ed9t Epic<\/a>V\u1edbi h\u01a1n 20 n\u0103m kinh nghi\u1ec7m trong ng\u00e0nh c\u00f4ng nghi\u1ec7p b\u1ed9t si\u00eau m\u1ecbn, ch\u00fang t\u00f4i t\u00edch c\u1ef1c th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n t\u01b0\u01a1ng lai c\u1ee7a b\u1ed9t si\u00eau m\u1ecbn, t\u1eadp trung v\u00e0o c\u00e1c quy tr\u00ecnh nghi\u1ec1n, xay, ph\u00e2n lo\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn b\u1ed9t si\u00eau m\u1ecbn. Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh! \u0110\u1ed9i ng\u0169 chuy\u00ean gia c\u1ee7a ch\u00fang t\u00f4i cam k\u1ebft cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 d\u1ecbch v\u1ee5 ch\u1ea5t l\u01b0\u1ee3ng cao nh\u1eb1m t\u1ed1i \u0111a h\u00f3a gi\u00e1 tr\u1ecb trong qu\u00e1 tr\u00ecnh gia c\u00f4ng b\u1ed9t c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img decoding=\"async\" width=\"602\" height=\"602\" src=\"http:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang.webp\" alt=\"\u00d4ng V\u01b0\u01a1ng\" class=\"wp-image-16219\" style=\"width:150px;height:150px\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang.webp 602w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-300x300.webp 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-100x100.webp 100w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-12x12.webp 12w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2025\/11\/Mr-Wang-600x600.webp 600w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size\">C\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 \u0111\u1ecdc. T\u00f4i hy v\u1ecdng b\u00e0i vi\u1ebft c\u1ee7a t\u00f4i c\u00f3 \u00edch. Vui l\u00f2ng \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn b\u00ean d\u01b0\u1edbi. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 li\u00ean h\u1ec7 v\u1edbi \u0111\u1ea1i di\u1ec7n kh\u00e1ch h\u00e0ng tr\u1ef1c tuy\u1ebfn c\u1ee7a EPIC Powder <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff6900\" class=\"has-inline-color\">Zelda<\/mark><\/strong> \u0111\u1ec3 bi\u1ebft th\u00eam b\u1ea5t k\u1ef3 th\u00f4ng tin n\u00e0o kh\u00e1c.\u201d<\/p>\n<cite>                                                                                                                                \u2014 <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff6900\" class=\"has-inline-color\">Jason Wang<\/mark><\/strong>, <em>K\u1ef9 s\u01b0<\/em><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\"><p class=\"wpcf7-contact-form-not-found\"><strong>L\u1ed7i:<\/strong> Kh\u00f4ng t\u00ecm th\u1ea5y li\u00ean h\u1ec7 m\u1eabu.<\/p><\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Silicon dioxide (SiO\u2082) t\u1ea1o th\u00e0nh c\u1ea5u tr\u00fac x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a th\u1ee7y tinh, mang l\u1ea1i \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc cao v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc tuy\u1ec7t v\u1eddi. V\u00ec l\u00fd do n\u00e0y, c\u00e1t th\u1ea1ch anh l\u00e0 nguy\u00ean li\u1ec7u kho\u00e1ng s\u1ea3n c\u00f4ng nghi\u1ec7p quan tr\u1ecdng nh\u1ea5t [\u2026]<\/p>","protected":false},"author":1,"featured_media":16344,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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