{"id":130383,"date":"2023-12-18T16:23:40","date_gmt":"2023-12-18T08:23:40","guid":{"rendered":"https:\/\/www.alpapowder.com\/130383\/"},"modified":"2023-12-18T16:23:41","modified_gmt":"2023-12-18T08:23:41","slug":"su-da-dang-va-linh-vuc-ung-dung-cua-gom-nhom-vi-tinh-the","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/130383\/","title":{"rendered":"S\u1ef1 \u0111a d\u1ea1ng v\u00e0 l\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng c\u1ee7a g\u1ed1m nh\u00f4m vi tinh th\u1ec3"},"content":{"rendered":"
<\/p>\n
G\u1ed1m alumina vi tinh th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ec9 v\u1eadt li\u1ec7u g\u1ed1m alumina s\u1eed d\u1ee5ng b\u1ed9t \u03b1-Al2O3 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao l\u00e0m nguy\u00ean li\u1ec7u ch\u00ednh, \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o th\u00f4ng qua c\u00f4ng ngh\u1ec7 g\u1ed1m, k\u00edch th\u01b0\u1edbc h\u1ea1t tinh th\u1ec3 nh\u1ecf h\u01a1n 6 \u03bcm v\u00e0 corundum l\u00e0 pha tinh th\u1ec3 ch\u00ednh.<\/p>\n
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G\u1ed1m nh\u00f4m vi tinh th\u1ec3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: lo\u1ea1i c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 lo\u1ea1i th\u00f4ng th\u01b0\u1eddng:<\/p>\n
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G\u1ed1m nh\u00f4m vi tinh th\u1ec3 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao<\/p>\n
G\u1ed1m alumina vi tinh th\u1ec3 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao d\u00f9ng \u0111\u1ec3 ch\u1ec9 v\u1eadt li\u1ec7u g\u1ed1m alumina c\u00f3 h\u00e0m l\u01b0\u1ee3ng Al2O3 tr\u00ean 99,9%.Nhi\u1ec7t \u0111\u1ed9 thi\u00eau k\u1ebft c\u1ee7a n\u00f3 cao t\u1edbi 1650 ~ 1990oC v\u00e0 b\u01b0\u1edbc s\u00f3ng truy\u1ec1n trong kho\u1ea3ng 1 ~ 6\u03bcm.N\u00f3 s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng c\u1ee7a n\u00f3 \u0111\u1ed9 truy\u1ec1n qua v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kim lo\u1ea1i ki\u1ec1m v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh kh\u00e1c, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u1ed1ng \u0111\u00e8n natri cao \u00e1p.<\/p>\n
G\u1ed1m nh\u00f4m vi tinh th\u1ec3 th\u00f4ng th\u01b0\u1eddng<\/p>\n
G\u1ed1m alumina vi tinh th\u1ec3 th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh s\u1ee9 99, 95, 92, 90, 85 v\u00e0 c\u00e1c lo\u1ea1i kh\u00e1c theo h\u00e0m l\u01b0\u1ee3ng Al2O3 (\u0111\u00f4i khi nh\u1eefng lo\u1ea1i c\u00f3 h\u00e0m l\u01b0\u1ee3ng Al2O3 80% ho\u1eb7c 75% c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 alumina th\u00f4ng th\u01b0\u1eddng). V\u1eadt li\u1ec7u g\u1ed1m nh\u00f4m 99 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ebf t\u1ea1o n\u1ed3i n\u1ea5u kim lo\u1ea1i nhi\u1ec7t \u0111\u1ed9 cao, \u1ed1ng l\u00f2 ch\u1ecbu l\u1eeda v\u00e0 c\u00e1c v\u1eadt li\u1ec7u ch\u1ecbu m\u00e0i m\u00f2n \u0111\u1eb7c bi\u1ec7t kh\u00e1c (nh\u01b0 v\u00f2ng bi g\u1ed1m, v\u00f2ng \u0111\u1ec7m g\u1ed1m v\u00e0 van n\u01b0\u1edbc), trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n t\u1eed, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t n\u1ec1n m\u1ea1ch t\u00edch h\u1ee3p. v\u00e0 v\u1eadt li\u1ec7u cao c\u1ea5p.V\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n t\u1ea7n s\u1ed1, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t l\u00e0m ch\u1ea5t mang x\u00fac t\u00e1c, v.v.S\u1ee9 alumina 95, 92 v\u00e0 90 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u ch\u1ed1ng \u0103n m\u00f2n, ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn ch\u1ed1ng m\u00e0i m\u00f2n;85 s\u1ee9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c tr\u1ed9n v\u1edbi m\u1ed9t s\u1ed1 b\u1ed9t talc, gi\u00fap c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t \u0111i\u1ec7n. V\u1edbi \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed1t, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn b\u1eb1ng niobium, tantalum v\u00e0 c\u00e1c kim lo\u1ea1i kh\u00e1c v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m linh ki\u1ec7n thi\u1ebft b\u1ecb ch\u00e2n kh\u00f4ng \u0111i\u1ec7n t\u1eed.<\/p>\n
<\/p>\n
L\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng c\u1ee7a g\u1ed1m nh\u00f4m vi tinh th\u1ec3<\/p>\n
<\/p>\n
C\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn s\u00e2u kho\u00e1ng s\u1ea3n phi kim lo\u1ea1i<\/p>\n
Hi\u1ec7n nay, h\u00e0ng t\u1ef7 t\u1ea5n kho\u00e1ng s\u1ea3n phi kim lo\u1ea1i b\u1ecb nghi\u1ec1n n\u00e1t m\u1ed7i n\u0103m tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi, \u0111\u00f2i h\u1ecfi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn v\u1eadt li\u1ec7u nghi\u1ec1n g\u1ed1m alumina vi tinh th\u1ec3 v\u00e0 c\u00e1c v\u1eadt li\u1ec7u nghi\u1ec1n kh\u00e1c nhau.Do kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n tuy\u1ec7t v\u1eddi c\u1ee7a v\u1eadt li\u1ec7u nghi\u1ec1n g\u1ed1m alumina vi tinh th\u1ec3 v\u00e0 Y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m g\u1ed1m ch\u1ea5t l\u01b0\u1ee3ng cao tr\u00ean v\u1eadt li\u1ec7u nghi\u1ec1n, n\u00f3 s\u1ebd tr\u1edf th\u00e0nh xu h\u01b0\u1edbng t\u1ea5t y\u1ebfu \u0111\u1ec3 v\u1eadt li\u1ec7u nghi\u1ec1n g\u1ed1m alumina vi tinh th\u1ec3 thay th\u1ebf d\u1ea7n c\u00e1c v\u1eadt li\u1ec7u nghi\u1ec1n kh\u00e1c trong t\u01b0\u01a1ng lai.<\/p>\n
L\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed<\/p>\n
G\u1ed1m alumina vi tinh th\u1ec3 c\u00f3 \u0111\u1eb7c t\u00ednh c\u00e1ch nhi\u1ec7t v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t tuy\u1ec7t v\u1eddi n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed, \u0111i\u1ec7n gia d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, b\u1ea3ng m\u1ea1ch, bao b\u00ec b\u00e1n d\u1eabn, v.v. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n t\u1eed, \u0111\u1eb7c bi\u1ec7t l\u00e0 ng\u00e0nh vi \u0111i\u1ec7n t\u1eed , nhu c\u1ea7u v\u1ec1 ch\u1ea5t n\u1ec1n g\u1ed1m nh\u00f4m ti\u1ebfp t\u1ee5c t\u0103ng.<\/p>\n
h\u00f3a d\u1ea7u<\/p>\n
G\u1ed1m alumina vi tinh th\u1ec3, \u0111\u1eb7c bi\u1ec7t l\u00e0 g\u1ed1m alumina vi tinh th\u1ec3 c\u00f3 h\u00e0m l\u01b0\u1ee3ng alumina tr\u00ean 97%, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb khoan d\u1ea7u kh\u00ed nh\u01b0 v\u00f2i phun, \u0111\u1ebf van, thi\u1ebft b\u1ecb \u0111i\u1ec1u ti\u1ebft, ph\u1ee5 ki\u1ec7n m\u00e1y b\u01a1m, ph\u1ee5 ki\u1ec7n m\u0169i khoan, v.v. Ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng d\u01b0\u1edbi \u00e1p su\u1ea5t cao , m\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng, ngay c\u1ea3 khi c\u00f3 m\u1eb7t axit v\u00e0 ki\u1ec1m.<\/p>\n
Khu qu\u00e2n s\u1ef1<\/p>\n
G\u1ed1m nh\u00f4m vi tinh th\u1ec3 c\u0169ng c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng trong l\u0129nh v\u1ef1c qu\u00e2n s\u1ef1, ch\u1eb3ng h\u1ea1n nh\u01b0 \u00e1o gi\u00e1p \u0111\u1ea1n \u0111\u1ea1o cho m\u00e1y bay, ph\u01b0\u01a1ng ti\u1ec7n v\u00e0 nh\u00e2n s\u1ef1.<\/p>\n
L\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t \u0111i\u1ec7n \u0111\u1ed1t than<\/p>\n
G\u1ea1ch alumina vi tinh th\u1ec3 v\u00e0 t\u1ea5m cong \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u00e0nh c\u00f4ng l\u00e0m l\u1edbp l\u00f3t cho c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t \u0111i\u1ec7n \u0111\u1ed1t than.V\u1eadt li\u1ec7u l\u00f3t n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea5p li\u1ec7u t\u1ed1c \u0111\u1ed9 cao cho c\u00e1c h\u1ea1t than nghi\u1ec1n th\u00e0nh b\u1ed9t, \u0111\u1ea7u \u0111\u1ed1t, x\u1eed l\u00fd tro bay v\u00e0 c\u1eb7n b\u00e3, v.v., \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1t than Con ru\u1ed3i Tro \u0111\u01b0\u1ee3c t\u1ea1o ra ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng cao th\u1ea1ch anh v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n kho\u00e1ng, x\u1ec9 kh\u00e1c nhau, kh\u1ea3 n\u0103ng m\u00e0i m\u00f2n c\u1ee7a ch\u00fang m\u1ea1nh h\u01a1n so v\u1edbi c\u00e1c h\u1ea1t than.Do th\u00e0nh ph\u1ea7n tro bay kh\u00e1c nhau n\u00ean gi\u00e1 tr\u1ecb pH c\u1ee7a v\u1eefa c\u00f3 ph\u1ea1m vi r\u1ed9ng (2,5-12) v\u00e0 c\u00f3 t\u00ednh \u0103n m\u00f2n cao n\u00ean s\u1ea3n ph\u1ea9m alumina vi tinh th\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng \u0111\u1ec3 l\u00f3t c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t \u0111i\u1ec7n \u0111\u1ed1t than.<\/p>\n","protected":false},"excerpt":{"rendered":"
G\u1ed1m alumina vi tinh th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ec9 v\u1eadt li\u1ec7u g\u1ed1m alumina s\u1eed d\u1ee5ng b\u1ed9t \u03b1-Al2O3 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao l\u00e0m nguy\u00ean li\u1ec7u ch\u00ednh, \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o th\u00f4ng qua c\u00f4ng ngh\u1ec7 g\u1ed1m, k\u00edch th\u01b0\u1edbc h\u1ea1t tinh th\u1ec3 nh\u1ecf h\u01a1n 6 \u03bcm v\u00e0 corundum l\u00e0 pha tinh th\u1ec3 ch\u00ednh.<\/p>\n","protected":false},"author":7,"featured_media":130346,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-130383","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/130383"}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=130383"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/130383\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/130346"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=130383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=130383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=130383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}