{"id":130813,"date":"2024-01-29T16:24:03","date_gmt":"2024-01-29T08:24:03","guid":{"rendered":"https:\/\/www.alpapowder.com\/130813\/"},"modified":"2024-01-29T16:24:04","modified_gmt":"2024-01-29T08:24:04","slug":"cong-nghe-san-xuat-canxi-hydroxit-chat-luong-cao","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/130813\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t canxi hydroxit ch\u1ea5t l\u01b0\u1ee3ng cao"},"content":{"rendered":"

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Canxi hydroxit, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00f4i ng\u1eadm n\u01b0\u1edbc, c\u00f3 c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc l\u00e0 Ca(OH)2. N\u00f3i chung \u1edf d\u1ea1ng b\u1ed9t, n\u00f3 s\u1ebd m\u1ea5t n\u01b0\u1edbc v\u00e0 tr\u1edf th\u00e0nh canxi oxit (v\u00f4i s\u1ed1ng) \u1edf 580\u00b0C d\u01b0\u1edbi \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng. Canxi hydroxit \u00edt tan trong n\u01b0\u1edbc v\u00e0 \u0111\u1ed9 h\u00f2a tan c\u1ee7a n\u00f3 gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng. Dung d\u1ecbch kh\u00f4ng m\u00e0u v\u00e0 trong su\u1ed1t thu \u0111\u01b0\u1ee3c khi h\u00f2a tan trong n\u01b0\u1edbc th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u01b0\u1edbc v\u00f4i trong. Huy\u1ec1n ph\u00f9 m\u00e0u tr\u1eafng \u0111\u1ee5c bao g\u1ed3m canxi hydroxit v\u00e0 n\u01b0\u1edbc \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u1eefa v\u00f4i.<\/p>\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t canxi hydroxit kh\u00f4: v\u00f4i s\u1ed1ng \u0111\u1ee7 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng m\u00e1y nghi\u1ec1n h\u00e0m. N\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o silo v\u00f4i th\u00f4ng qua g\u1ea7u n\u00e2ng v\u00e0 b\u0103ng t\u1ea3i rung ki\u1ec3u th\u00f9ng. V\u00f4i trong silo \u0111\u01b0\u1ee3c th\u00eam m\u1ed9t c\u00e1ch \u0111\u1ecbnh l\u01b0\u1ee3ng v\u00e0o thi\u1ebft b\u1ecb x\u1eed l\u00fd tr\u01b0\u1edbc v\u00f4i ng\u1eadm n\u01b0\u1edbc th\u00f4ng qua vi\u1ec7c cho \u0103n h\u00ecnh ng\u00f4i sao, v\u00e0 ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ti\u00eau h\u00f3a d\u01b0\u1edbi s\u1ef1 khu\u1ea5y tr\u1ed9n m\u1ea1nh b\u1eb1ng que khu\u1ea5y, sau \u0111\u00f3 \u0111i v\u00e0o thi\u1ebft b\u1ecb ph\u00e2n h\u1ee7y \u0111\u1ec3 ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh ti\u00eau h\u00f3a. V\u00f4i \u0111\u00e3 ti\u00eau h\u00f3a \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o silo v\u00f4i t\u00f4i b\u1eb1ng thang m\u00e1y v\u00f4i t\u00f4i v\u00e0 b\u0103ng t\u1ea3i tr\u1ee5c v\u00edt \u0111\u1ea7u v\u00e0o, sau \u0111\u00f3 v\u00f4i t\u00f4i tinh ch\u1ebf \u0111\u1ee7 ti\u00eau chu\u1ea9n thu \u0111\u01b0\u1ee3c b\u1eb1ng thi\u1ebft b\u1ecb t\u00e1ch kh\u00ed xo\u1eafn \u1ed1c th\u00eam tro. V\u00f4i t\u00f4i tinh ch\u1ebf \u0111\u01b0\u1ee3c d\u1ee1 v\u00e0o silo v\u00f4i t\u00f4i th\u00e0nh ph\u1ea9m r\u1ed3i \u0111\u00f3ng g\u00f3i theo nhu c\u1ea7u ng\u01b0\u1eddi s\u1eed d\u1ee5ng. Trong qu\u00e1 tr\u00ecnh ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y kh\u00f4, c\u01a1 c\u1ea5u t\u1ed5 ch\u1ee9c thay \u0111\u1ed5i khi\u1ebfn Ca(OH)2 t\u1ea1o th\u00e0nh b\u1ed9t l\u1ecfng, th\u1ec3 t\u00edch t\u0103ng g\u1ea5p 1,5 \u0111\u1ebfn 2,0 l\u1ea7n th\u1ec3 t\u00edch ban \u0111\u1ea7u. S\u1ea3n ph\u1ea9m v\u00e0 nguy\u00ean li\u1ec7u th\u00f4 c\u00f3 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t h\u01a1n n\u00ean c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng qu\u00e1 tr\u00ecnh ti\u00eau h\u1ee7y kh\u00f4 trong n\u01b0\u1edbc. Ph\u1ea3n \u1ee9ng c\u00f3 t\u1ed1c \u0111\u1ed9 chuy\u1ec3n h\u00f3a cao c\u1ee7a v\u00f4i s\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c trong \u0111i\u1ec1u ki\u1ec7n t\u1ef7 l\u1ec7 tro th\u1ea5p (t\u1ef7 l\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a n\u01b0\u1edbc v\u00e0 v\u00f4i).<\/p>\n

\u1ee8ng d\u1ee5ng canxi hydroxit<\/p>\n

(1) V\u1eadt li\u1ec7u ch\u1ed1ng ch\u00e1y<\/p>\n

B\u1ed9t canxi hydroxit \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0m ch\u1ea5t \u0111\u1ed9n trong v\u1eadt li\u1ec7u polymer. Vi\u1ec7c th\u00eam canxi hydroxit v\u00e0o v\u1eadt li\u1ec7u polyme c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u00e0 \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y c\u1ee7a v\u1eadt li\u1ec7u composite; canxi hydroxit c\u00f3 t\u00ednh ki\u1ec1m v\u00e0 c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi hydro clorua (HCl) \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng khi PVC b\u1ecb ph\u00e2n h\u1ee7y nhi\u1ec7t, lo\u1ea1i b\u1ecf s\u1ef1 ph\u00e2n h\u1ee7y PVC b\u1edfi hydro clorua. Hi\u1ec7u \u1ee9ng t\u1ef1 x\u00fac t\u00e1c c\u1ee7a qu\u00e1 tr\u00ecnh c\u00f3 t\u00e1c d\u1ee5ng \u1ed5n \u0111\u1ecbnh nhi\u1ec7t nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

(2) V\u1eadt li\u1ec7u polyme d\u1ec5 ph\u00e2n h\u1ee7y<\/p>\n

Canxi hydroxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t ph\u1ee5 tr\u1ee3 cho vi\u1ec7c h\u1ea5p th\u1ee5 nh\u1ef1a trong m\u00f4i tr\u01b0\u1eddng. N\u00f3 c\u00f3 t\u00e1c d\u1ee5ng kh\u1eed clo, n\u1ee9t v\u00e0 ph\u00e2n h\u1ee7y ki\u1ec1m \u0111\u1ed1i v\u1edbi s\u1ef1 ph\u00e2n h\u1ee7y c\u1ee7a nh\u1ef1a.<\/p>\n

(3) X\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i<\/p>\n

Vai tr\u00f2 c\u1ee7a canxi hydroxit trong n\u01b0\u1edbc th\u1ea3i v\u1ec1 c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 t\u00f3m t\u1eaft th\u00e0nh b\u1ed1n kh\u00eda c\u1ea1nh: trung h\u00f2a axit t\u1ef1 do trong n\u01b0\u1edbc th\u1ea3i, trung h\u00f2a mu\u1ed1i axit trong n\u01b0\u1edbc th\u1ea3i, ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c ion kim lo\u1ea1i \u0111\u1ec3 t\u1ea1o ra k\u1ebft t\u1ee7a kh\u00f4ng tan trong n\u01b0\u1edbc v\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 pH c\u1ee7a n\u01b0\u1edbc th\u1ea3i. gi\u00e1 tr\u1ecb.<\/p>\n

(4) Ch\u1ea5t kh\u1eed l\u01b0u hu\u1ef3nh<\/p>\n

Trong qu\u00e1 tr\u00ecnh kh\u1eed l\u01b0u hu\u1ef3nh \u01b0\u1edbt canxi hydroxit-th\u1ea1ch cao, kh\u00ed th\u1ea3i ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng h\u1ea5p th\u1ee5 Ca(OH)2 tr\u00ean di\u1ec7n r\u1ed9ng, l\u00e0m cho SO2 trong kh\u00ed th\u1ea3i h\u00f2a tan trong n\u01b0\u1edbc v\u00e0 ph\u1ea3n \u1ee9ng v\u1edbi huy\u1ec1n ph\u00f9 canxi hydroxit t\u1ea1o th\u00e0nh canxi sulfite, sau \u0111\u00f3 \u0111\u01b0\u1ee3c th\u1ed5i v\u00e0o Trong \u0111i\u1ec1u ki\u1ec7n m\u1ed9t l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed l\u1edbn, canxi sulfite b\u1ecb oxy h\u00f3a \u0111\u1ec3 t\u1ea1o ra CaS (V2H2O), nh\u1edd \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch gi\u1ea3m SO2 trong kh\u00ed th\u1ea3i. Trong qu\u00e1 tr\u00ecnh kh\u1eed l\u01b0u hu\u1ef3nh canxi, c\u00e1c ion canxi th\u1ef1c s\u1ef1 tham gia v\u00e0o qu\u00e1 tr\u00ecnh c\u1ed1 \u0111\u1ecbnh l\u01b0u hu\u1ef3nh. Canxi cacbonat, canxi oxit v\u00e0 canxi hydroxit \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t kh\u1eed l\u01b0u hu\u1ef3nh.<\/p>\n

(5) Ch\u0103m s\u00f3c y t\u1ebf v\u00e0 s\u1ee9c kh\u1ecfe<\/p>\n

Canxi hydroxit \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 kh\u1eed tr\u00f9ng \u1edf nhi\u1ec1u n\u01a1i nh\u01b0 nghi\u00ean c\u1ee9u khoa h\u1ecdc, ph\u00f2ng th\u00ed nghi\u1ec7m, y h\u1ecdc, nh\u00e0 m\u00e1y, v.v. N\u00f3 c\u00f3 l\u1ecbch s\u1eed s\u1eed d\u1ee5ng l\u00e2u d\u00e0i trong y h\u1ecdc l\u00e2m s\u00e0ng.<\/p>\n

(6) Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/p>\n

Th\u00eam m\u1ed9t l\u01b0\u1ee3ng canxi hydroxit c\u1ea5p th\u1ef1c ph\u1ea9m nh\u1ea5t \u0111\u1ecbnh v\u00e0o s\u1eefa b\u1ed9t kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh gi\u00e1 tr\u1ecb pH c\u1ee7a s\u1eefa b\u1ed9t v\u00e0 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh h\u00f2a tan nhanh ch\u00f3ng c\u1ee7a s\u1eefa b\u1ed9t trong n\u01b0\u1edbc m\u00e0 c\u00f2n b\u1ed5 sung canxi.<\/p>\n","protected":false},"excerpt":{"rendered":"

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t canxi hydroxit kh\u00f4: v\u00f4i s\u1ed1ng \u0111\u1ee7 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng m\u00e1y nghi\u1ec1n h\u00e0m. N\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o silo v\u00f4i th\u00f4ng qua g\u1ea7u n\u00e2ng v\u00e0 b\u0103ng t\u1ea3i rung ki\u1ec3u th\u00f9ng.<\/p>\n","protected":false},"author":7,"featured_media":130776,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-130813","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\/130813","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=130813"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/130813\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/130776"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=130813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=130813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=130813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}