{"id":119078,"date":"2022-09-30T10:28:39","date_gmt":"2022-09-30T02:28:39","guid":{"rendered":"https:\/\/www.alpapowder.com\/119078\/"},"modified":"2022-09-29T14:34:45","modified_gmt":"2022-09-29T06:34:45","slug":"cong-nghe-san-xuat-bot-silica-hinh-cau-co-do-tinh-khiet-cao-it-phong-xa","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/119078\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t b\u1ed9t silica h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, \u00edt ph\u00f3ng x\u1ea1"},"content":{"rendered":"

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B\u1ed9t silicon h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong bao b\u00ec m\u1ea1ch t\u00edch h\u1ee3p do t\u00ednh l\u01b0u \u0111\u1ed9ng tuy\u1ec7t v\u1eddi v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111\u00f3ng g\u00f3i m\u1ea1ch t\u00edch h\u1ee3p quy m\u00f4 l\u1edbn v\u00e0 si\u00eau l\u1edbn, \u0111\u1ec3 tr\u00e1nh sai s\u1ed1 m\u1ec1m trong c\u00e1c thi\u1ebft b\u1ecb b\u00e1n d\u1eabn thu \u0111\u01b0\u1ee3c c\u00e1c nguy\u00ean t\u1ed1 ph\u00f3ng x\u1ea1. \u0110\u1eb7c bi\u1ec7t, vi h\u1ea1t silica<\/a> h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 ph\u00f3ng x\u1ea1 th\u1ea5p v\u1edbi h\u00e0m l\u01b0\u1ee3ng uranium (U) (ph\u1ea7n kh\u1ed1i l\u01b0\u1ee3ng) nh\u1ecf h\u01a1n 1 \u00d7 10-9 \u0111\u00e3 tr\u1edf th\u00e0nh \u0111i\u1ec3m n\u00f3ng nghi\u00ean c\u1ee9u trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y.<\/p>\n

\u0110\u1ea7u ti\u00ean, ph\u1ea7n t\u1eed uranium (U6 +) trong b\u1ed9t silicon<\/a> si\u00eau m\u1ecbn \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong b\u00f9n c\u00f3 t\u00ednh axit, sau \u0111\u00f3 thi\u1ebft b\u1ecb h\u1ea5p ph\u1ee5 trung t\u00ednh h\u1ed7n h\u1ee3p g\u1ed1m SiO2 v\u00e0 g\u1ed1m t\u1ed5 ong \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ea5p ph\u1ee5 n\u00f3 nh\u1eb1m ho\u00e0n th\u00e0nh qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn v\u00e0 tinh ch\u1ebf v\u1eadt li\u1ec7u, \u0111\u1ec3 t\u1ea1o ra silicon si\u00eau m\u1ecbn. b\u1ed9t T\u1ed5ng h\u00e0m l\u01b0\u1ee3ng c\u1ee7a nguy\u00ean t\u1ed1 uranium (U) gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 1 \u00d7 10-9, v\u00e0 b\u1ed9t silica<\/a> h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 ph\u00f3ng x\u1ea1 th\u1ea5p cu\u1ed1i c\u00f9ng thu \u0111\u01b0\u1ee3c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u1ea5u ch\u1ea3y ng\u1ecdn l\u1eeda v\u00e0 c\u00f4ng ngh\u1ec7 sau x\u1eed l\u00fd kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m. Thi\u1ebft b\u1ecb h\u1ea5p ph\u1ee5 trung t\u00ednh c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng v\u00e0 nhanh ch\u00f3ng t\u00e1ch ra kh\u1ecfi b\u00f9n sau khi qu\u00e1 tr\u00ecnh h\u1ea5p ph\u1ee5 ho\u00e0n th\u00e0nh, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 t\u00e1i ch\u1ebf v\u00e0 khu\u1ebfch \u0111\u1ea1i quy m\u00f4 l\u1edbn; v\u00e0 c\u00e1c m\u1eabu thu \u0111\u01b0\u1ee3c c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 \u0111\u1ed9 h\u00ecnh c\u1ea7u cao v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c, \u0111\u1ed3ng th\u1eddi, hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng nh\u01b0 hi\u1ec7u su\u1ea5t l\u01b0u \u0111\u1ed9ng t\u1ed1t.<\/p>\n

1. L\u1ef1a ch\u1ecdn v\u00e0 tinh ch\u1ebf microsilica<\/p>\n

B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 x\u1eed l\u00fd tr\u01b0\u1edbc vi nguy\u00ean li\u1ec7u silicon<\/a> ch\u1ee9a uranium (U)<\/p>\n

B\u01b0\u1edbc th\u1ee9 hai l\u00e0 chu\u1ea9n b\u1ecb m\u1ed9t thi\u1ebft b\u1ecb h\u1ea5p ph\u1ee5 m\u00ea<\/p>\n

B\u01b0\u1edbc th\u1ee9 ba, h\u1ea5p ph\u1ee5 v\u00e0 thanh l\u1ecdc<\/p>\n

Trong th\u00ed nghi\u1ec7m, b\u1ed9t silicon<\/a> th\u00f4ng th\u01b0\u1eddng c\u00f3 h\u00e0m l\u01b0\u1ee3ng uranium (U) l\u00e0 9,7 \u00d7 10-9 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 tinh ch\u1ebf. N\u1ebfu ch\u1ec9 s\u1eed d\u1ee5ng n\u01b0\u1edbc kh\u1eed ion \u0111\u1ec3 tinh ch\u1ebf b\u1ed9t silic si\u00eau m\u1ecbn th\u00ec h\u00e0m l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 uranium (U) trong nguy\u00ean li\u1ec7u ch\u1ec9 t\u1eeb 9,7 \u00d7 10-9 th\u00ec gi\u1ea3m xu\u1ed1ng c\u00f2n 9,0 \u00d7 10-9; khi b\u1ed9t silic si\u00eau m\u1ecbn \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n v\u1edbi dung d\u1ecbch c\u00f3 pH\u22644,5, h\u00e0m l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 uranium (U) trong b\u1ed9t silic tinh khi\u1ebft c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng c\u00f2n 7,3 \u00d7 10-9.<\/p>\n

Tuy nhi\u00ean, do kh\u00f4ng lo\u1ea1i b\u1ecf \u0111\u01b0\u1ee3c nguy\u00ean t\u1ed1 urani h\u00f3a tr\u1ecb s\u00e1u ph\u00e2n t\u00e1n trong b\u00f9n axit, nguy\u00ean t\u1ed1 urani b\u1ecb t\u00e1i h\u1ea5p ph\u1ee5 tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t vi h\u1ea1t silic trong qu\u00e1 tr\u00ecnh l\u1eafng v\u00e0 l\u00e0m kh\u00f4, l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 tinh ch\u1ebf. nguy\u00ean t\u1ed1 uranium. Sau khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb h\u1ea5p ph\u1ee5 trung t\u00ednh, ph\u1ea7n t\u1eed uranium (U6 +) h\u00f3a tr\u1ecb s\u00e1u ph\u00e2n t\u00e1n trong b\u00f9n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c aerogel g\u1ed1c SiO2 h\u1ea5p ph\u1ee5 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m d\u1ea7n khi t\u0103ng th\u1eddi gian h\u1ea5p ph\u1ee5. Sau ba th\u00ed nghi\u1ec7m tinh ch\u1ebf v\u00e0 ph\u00e2n t\u00e1ch, H\u00e0m l\u01b0\u1ee3ng nguy\u00ean t\u1ed1 uranium (U) c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng c\u00f2n 6 \u00d7 10-10. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y r\u1eb1ng khi \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a v\u1eadt li\u1ec7u kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u \u0111\u1ec3 s\u1ea3n xu\u1ea5t tr\u1ef1c ti\u1ebfp b\u1ed9t silica<\/a> h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 ph\u00f3ng x\u1ea1 th\u1ea5p, th\u00ec h\u00e0m l\u01b0\u1ee3ng uranium c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m xu\u1ed1ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 tinh ch\u1ebf ch\u1ecdn l\u1ecdc. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m c\u0169ng cho th\u1ea5y r\u1eb1ng uranium trong vi nguy\u00ean li\u1ec7u silicon<\/a> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1ch m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 b\u1eb1ng c\u00e1ch r\u1eeda axit, v\u00e0 uranium \u0111\u00e3 t\u00e1ch ra c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u h\u1ea5p ph\u1ee5 trung t\u00ednh h\u1ea5p th\u1ee5 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. D\u1ef1a tr\u00ean quy tr\u00ecnh c\u00f4ng ngh\u1ec7 n\u00e0y, c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t ti\u1ebfp theo.<\/p>\n

2. Thi\u1ebft k\u1ebf h\u00ecnh c\u1ea7u h\u00f3a v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t<\/p>\n

\u0110\u1ea7u ti\u00ean, th\u00eam l\u1edbp b\u1ea3o v\u1ec7 g\u1ed1m zirconia l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn m\u00e0 b\u1ed9t silicon<\/a> si\u00eau m\u1ecbn c\u00f3 th\u1ec3 ti\u1ebfp x\u00fac trong qu\u00e1 tr\u00ecnh ti\u1ebfp theo \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng nguy\u00ean t\u1ed1 uranium (U) s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o trong qu\u00e1 tr\u00ecnh ti\u1ebfp theo \u0111\u1ec3 g\u00e2y \u00f4 nhi\u1ec5m th\u1ee9 c\u1ea5p, v\u00e0 sau \u0111\u00f3 \u0111\u01b0a b\u1ed9t silic si\u00eau m\u1ecbn v\u00e0o trong l\u00f2 nung h\u00ecnh c\u1ea7u, th\u00f4ng qua tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 (1800 ~ 2200 \u2103), tr\u01b0\u1eddng d\u00f2ng kh\u00f4ng kh\u00ed (v\u1edbi oxy l\u00e0 kh\u00ed mang v\u00e0 ch\u1ea5t oxy h\u00f3a, kh\u00ed t\u1ef1 nhi\u00ean l\u00e0 kh\u00ed, t\u1ef7 l\u1ec7 gi\u1eefa t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a kh\u00ed v\u00e0 ch\u1ea5t oxy h\u00f3a l\u00e0 1,05) v\u00e0 d\u00f2ng nguy\u00ean li\u1ec7u (50 ~ 500kg \/ h) Vi\u1ec7c ki\u1ec3m so\u00e1t h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u00e0 b\u1ed9t silicon si\u00eau m\u1ecbn \u1edf trong tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 trong 0,1-3 gi\u00e2y d\u01b0\u1edbi m\u1ed9t \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed nh\u1ea5t \u0111\u1ecbnh. C\u00e1c s\u1ea3n ph\u1ea9m h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i c\u1ee1 h\u1ea1t v\u00e0 k\u1ebft h\u1ee3p, v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee1 h\u1ea1t t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo c\u00e1c y\u00eau c\u1ea7u \u0111\u00f3ng g\u00f3i kh\u00e1c nhau.<\/p>\n

Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t l\u00e0m gi\u1ea3m s\u1ef1 ph\u1ee5 thu\u1ed9c qu\u00e1 nhi\u1ec1u v\u00e0o nguy\u00ean li\u1ec7u th\u00f4 c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t vi h\u1ea1t silica<\/a> h\u00ecnh c\u1ea7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 ph\u00f3ng x\u1ea1 th\u1ea5p \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh.<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u1ed9t silicon h\u00ecnh c\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong bao b\u00ec m\u1ea1ch t\u00edch h\u1ee3p do t\u00ednh l\u01b0u \u0111\u1ed9ng tuy\u1ec7t v\u1eddi v\u00e0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p<\/p>\n","protected":false},"author":7,"featured_media":119054,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[830],"tags":[],"class_list":["post-119078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119078","targetHints":{"allow":["GET"]}}],"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=119078"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119078\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/119054"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=119078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=119078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=119078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}