{"id":15997,"date":"2024-12-17T03:07:42","date_gmt":"2024-12-17T03:07:42","guid":{"rendered":"http:\/\/quartz-grinding.com\/?p=15997"},"modified":"2024-12-17T03:19:00","modified_gmt":"2024-12-17T03:19:00","slug":"production-methods-of-spherical-silica-powder","status":"publish","type":"post","link":"https:\/\/www.quartz-grinding.com\/vi\/production-methods-of-spherical-silica-powder\/","title":{"rendered":"M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t b\u1ed9t Silica h\u00ecnh c\u1ea7u"},"content":{"rendered":"<h2 class=\"wp-block-heading\">1. <strong>Gi\u1edbi thi\u1ec7u<\/strong><\/h2>\n\n\n\n<p>B\u1ed9t silica h\u00ecnh c\u1ea7u l\u00e0 m\u1ed9t lo\u1ea1i b\u1ed9t silica c\u00f3 c\u00e1c h\u1ea1t h\u00ecnh c\u1ea7u, th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 silicon dioxide. V\u1edbi \u0111\u1eb7c t\u00ednh t\u1ed1t <a href=\"https:\/\/en.wikipedia.org\/wiki\/Dielectric\">ch\u1ea5t \u0111i\u1ec7n m\u00f4i<\/a> T\u00ednh ch\u1ea5t, \u0111\u1ed9 d\u1eabn nhi\u1ec7t t\u1ed1t v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf th\u1ea5p, b\u1ed9t silica h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c \u0111\u00f3ng g\u00f3i thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, s\u01a1n ph\u1ee7 v\u00e0 m\u1ef9 ph\u1ea9m, v.v.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"442\" height=\"552\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Spherical-silica-powder.png\" alt=\"\" class=\"wp-image-15998\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Spherical-silica-powder.png 442w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Spherical-silica-powder-240x300.png 240w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Spherical-silica-powder-10x12.png 10w\" sizes=\"(max-width: 442px) 100vw, 442px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>Ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t<\/strong><\/h2>\n\n\n\n<p>T\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c c\u00f3 x\u1ea3y ra bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc hay kh\u00f4ng, ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t b\u1ed9t silica h\u00ecnh c\u1ea7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc. Ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd bao g\u1ed3m: ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n c\u01a1 h\u1ecdc, ph\u01b0\u01a1ng ph\u00e1p phun, ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh c\u1ea7u h\u00f3a ng\u1ecdn l\u1eeda, ph\u01b0\u01a1ng ph\u00e1p plasma v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh c\u1ea7u h\u00f3a nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao, v.v. Ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc ch\u1ee7 y\u1ebfu bao g\u1ed3m: ph\u01b0\u01a1ng ph\u00e1p pha kh\u00ed, ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a, ph\u01b0\u01a1ng ph\u00e1p th\u1ee7y nhi\u1ec7t, ph\u01b0\u01a1ng ph\u00e1p sol-gel v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nh\u0169 t\u01b0\u01a1ng vi m\u00f4, v.v.&nbsp;<\/p>\n\n\n\n<p>Ti\u1ebfp theo, ch\u00fang ta s\u1ebd n\u00f3i c\u1ee5 th\u1ec3 v\u1ec1 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"1200\" height=\"628\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/Production-line.jpg_temp-2-1.bmp\" alt=\"\" class=\"wp-image-16005\" style=\"width:653px;height:auto\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.1. Ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n c\u01a1 h\u1ecdc<\/strong><\/h3>\n\n\n\n<p>S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb nghi\u1ec1n chuy\u00ean nghi\u1ec7p v\u00e0 thi\u1ebft b\u1ecb s\u00e0ng l\u1ecdc ph\u1ee5 tr\u1ee3, c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c b\u1ed9t silica h\u00ecnh c\u1ea7u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t silica si\u00eau m\u1ecbn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.2. Ph\u01b0\u01a1ng ph\u00e1p phun<\/strong><\/h3>\n\n\n\n<p>H\u00f2a tan ngu\u1ed3n silicon (nh\u01b0 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Silicate\">silicat<\/a>) trong dung m\u00f4i th\u00edch h\u1ee3p \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch \u0111\u1ed3ng nh\u1ea5t. Sau \u0111\u00f3 phun dung d\u1ecbch ra ngo\u00e0i th\u00f4ng qua thi\u1ebft b\u1ecb phun, c\u00e1c gi\u1ecdt \u0111\u01b0\u1ee3c nhi\u1ec7t ph\u00e2n nhanh ch\u00f3ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Cu\u1ed1i c\u00f9ng, thu \u0111\u01b0\u1ee3c b\u1ed9t silica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.3. H\u00ecnh c\u1ea7u ng\u1ecdn l\u1eeda<\/strong><\/h3>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 qu\u00e1 tr\u00ecnh ti\u1ec1n x\u1eed l\u00fd nghi\u1ec1n, s\u00e0ng l\u1ecdc v\u00e0 tinh ch\u1ebf tr\u00ean c\u00e1t th\u1ea1ch anh c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. Sau \u0111\u00f3 \u0111\u01b0a b\u1ed9t th\u1ea1ch anh v\u00e0o tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao do kh\u00ed oxy t\u1ea1o ra \u0111\u1ec3 n\u1ea5u ch\u1ea3y \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Ti\u1ebfp theo, b\u1ed9t n\u00f3ng ch\u1ea3y \u0111\u01b0\u1ee3c l\u00e0m ngu\u1ed9i v\u00e0 cu\u1ed1i c\u00f9ng thu \u0111\u01b0\u1ee3c b\u1ed9t silica h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2.4. Ph\u01b0\u01a1ng ph\u00e1p plasma<\/strong><\/h3>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng b\u1ed9t silica g\u00f3c l\u00e0m nguy\u00ean li\u1ec7u th\u00f4. \u0110\u1ea7u ti\u00ean, x\u1eed l\u00fd b\u1ed9t silica g\u00f3c th\u00f4ng qua nghi\u1ec1n, s\u00e0ng v\u00e0 tinh ch\u1ebf, sau \u0111\u00f3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p nung ch\u1ea3y ng\u1ecdn l\u1eeda nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec3 l\u00e0m tan ch\u1ea3y ngay l\u1eadp t\u1ee9c \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u1edbi axetilen ho\u1eb7c kh\u00ed t\u1ef1 nhi\u00ean l\u00e0m ngu\u1ed3n nhi\u1ec7t, ti\u1ebfp theo, nhanh ch\u00f3ng l\u00e0m ngu\u1ed9i th\u00e0nh c\u00e1c vi\u00ean bi, cu\u1ed1i c\u00f9ng thu \u0111\u01b0\u1ee3c b\u1ed9t silica c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 c\u00e1c h\u1ea1t \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>B\u1ea3n t\u00f3m t\u1eaft<\/strong><\/h2>\n\n\n\n<p>V\u1edbi s\u1ef1 c\u1ea3i ti\u1ebfn li\u00ean t\u1ee5c c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t, \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ed9t silica h\u00ecnh c\u1ea7u s\u1ebd \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng h\u01a1n n\u1eefa. Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, s\u1ea3n xu\u1ea5t c\u1ee7a n\u00f3 th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi c\u00e1c quy tr\u00ecnh nghi\u1ec1n, s\u00e0ng l\u1ecdc, tinh ch\u1ebf v\u00e0 ph\u00e2n lo\u1ea1i, v.v. N\u00f3 \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd c\u00f4ng th\u1ee9c v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a th\u00e0nh ph\u1ea9m.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\"><a href=\"https:\/\/www.nonmetallic-ore.com\/about\/\"><strong><em><strong><em>C\u00f4ng ty TNHH M\u00e1y m\u00f3c b\u1ed9t Thanh \u0110\u1ea3o Epic<\/em><\/strong><\/em><\/strong><\/a>&nbsp;l\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean s\u1ea3n xu\u1ea5t m\u00e1y m\u00f3c d\u1ea1ng b\u1ed9t.&nbsp;<strong><em><strong><a href=\"http:\/\/quartz-grinding.com\/products-category\/ball-mill-and-air-classifier-production-line\/\">M\u00e1y nghi\u1ec1n bi v\u00e0 m\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed <\/a><\/strong><\/em><\/strong>do Qingdao Epic s\u1ea3n xu\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 nghi\u1ec1n v\u00e0 ph\u00e2n lo\u1ea1i b\u1ed9t silica h\u00ecnh c\u1ea7u v\u00e0 c\u00f3 uy t\u00edn t\u1ed1t v\u1edbi kh\u00e1ch h\u00e0ng.<\/mark><\/p>\n\n\n\n<p><strong>C\u00e1c s\u1ea3n ph\u1ea9m ch\u00ednh c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m:<\/strong><\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&#8211;&nbsp;<strong>Nh\u00e0 m\u00e1y<\/strong>: <a href=\"http:\/\/quartz-grinding.com\/products\/ball-mill-and-air-classifier-production-line\/\">m\u00e1y nghi\u1ec1n bi<\/a>, m\u00e1y ph\u00e2n lo\u1ea1i kh\u00ed (ACM), <a href=\"https:\/\/www.nonmetallic-ore.com\/product\/ultrafine-powder-grinding\/roller-mill\/\">m\u00e1y nghi\u1ec1n tr\u1ee5c l\u0103n<\/a>m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c, m\u00e1y nghi\u1ec1n tuabin v\u00e0 m\u00e1y nghi\u1ec1n va \u0111\u1eadp, v.v.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&#8211;&nbsp;<strong><a href=\"http:\/\/quartz-grinding.com\/products\/ball-mill-and-air-classifier-production-line\/\">B\u1ed9 ph\u00e2n lo\u1ea1i<\/a><\/strong>: bao g\u1ed3m b\u1ed1n lo\u1ea1t m\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed:<a href=\"https:\/\/www.nonmetallic-ore.com\/product\/ultrafine-air-classifier\/horizontal-air-classifier\/\">&nbsp;HTS<\/a>, <a href=\"https:\/\/www.nonmetallic-ore.com\/product\/ultrafine-air-classifier\/vertical-air-classifier\/\">ITC<\/a>, MBS v\u00e0 CTC.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&#8211;&nbsp;<strong>L\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t m<\/strong><strong>ng\u01b0\u1eddi l\u00e0m m\u00f9i h\u00f4i th\u1ed1i<\/strong>: <a href=\"https:\/\/www.nonmetallic-ore.com\/product\/surface-modification\/pin-mill-modifier\/\">b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh pin-mill<\/a>,<a href=\"https:\/\/www.nonmetallic-ore.com\/product\/surface-modification\/turbo-mill-modifier\/\">&nbsp;b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh tuabin-mill<\/a>&nbsp;v\u00e0 m\u00e1y bi\u1ebfn t\u00ednh ba tr\u1ee5c, v.v.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&#8211;&nbsp;<strong>Thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3<\/strong>: <a href=\"https:\/\/www.nonmetallic-ore.com\/product\/auxiliary-equipment\/control-cabinet\/\">t\u1ee7 \u0111i\u1ec1u khi\u1ec3n<\/a>, <a href=\"https:\/\/www.nonmetallic-ore.com\/product\/auxiliary-equipment\/bag-filter\/\">m\u00e1y h\u00fat b\u1ee5i<\/a>&nbsp;v\u00e0 thang m\u00e1y g\u1ea7u x\u00fac, v.v.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;\u2013 Kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh s\u1ea3n ph\u1ea9m theo nhu c\u1ea7u th\u1ef1c t\u1ebf. M\u1ed9t kh\u00e1ch h\u00e0ng, m\u1ed9t thi\u1ebft k\u1ebf.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n quan t\u00e2m \u0111\u1ebfn m\u00e1y nghi\u1ec1n bi v\u00e0 m\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed ho\u1eb7c c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c t\u1eeb<a href=\"http:\/\/quartz-grinding.com\/contact-us\/\"> S\u1eed thi Thanh \u0110\u1ea3o<\/a>, <a href=\"http:\/\/quartz-grinding.com\/contact-us\/\">li\u00ean h\u1ec7 v\u1edbi nh\u00e2n vi\u00ean c\u1ee7a ch\u00fang t\u00f4i<\/a> tr\u1ef1c ti\u1ebfp, ch\u00fang t\u00f4i lu\u00f4n s\u1eb5n s\u00e0ng ph\u1ee5c v\u1ee5 b\u1ea1n.<\/p>\n\n\n\n<p><strong>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 h\u00ecnh \u1ea3nh t\u1eeb Qingdao Epic \u0111\u1ec3 b\u1ea1n tham kh\u1ea3o.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1.jpg\" alt=\"\" class=\"wp-image-16004\" style=\"width:592px;height:auto\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1.jpg 1000w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1-300x300.jpg 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1-100x100.jpg 100w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1-768x768.jpg 768w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1-12x12.jpg 12w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-2-1-600x600.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-.jpg_temp-1.bmp\" alt=\"\" class=\"wp-image-16000\" style=\"width:593px;height:auto\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz.jpeg\" alt=\"\" class=\"wp-image-16007\" style=\"width:669px;height:auto\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz.jpeg 1024w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz-300x169.jpeg 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz-768x432.jpeg 768w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz-18x10.jpeg 18w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ball-mill-for-quartz-600x338.jpeg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2976\" height=\"3968\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/ITC-air-classifier.jpg_temp.bmp\" alt=\"\" class=\"wp-image-16001\" style=\"width:591px;height:auto\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"http:\/\/quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1.png\" alt=\"\" class=\"wp-image-16002\" style=\"width:592px;height:auto\" srcset=\"https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1.png 1024w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1-300x225.png 300w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1-768x576.png 768w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1-16x12.png 16w, https:\/\/www.quartz-grinding.com\/wp-content\/uploads\/2024\/12\/air-classifer-1024x768-1-600x450.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>1. Gi\u1edbi thi\u1ec7u B\u1ed9t silica h\u00ecnh c\u1ea7u l\u00e0 m\u1ed9t lo\u1ea1i b\u1ed9t silica c\u00f3 c\u00e1c h\u1ea1t h\u00ecnh c\u1ea7u, th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 silicon dioxide. V\u1edbi \u0111\u1eb7c \u0111i\u1ec3m l\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i t\u1ed1t, \u0111\u1ed9 d\u1eabn nhi\u1ec7t t\u1ed1t v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf th\u1ea5p, 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