{"id":133327,"date":"2024-08-07T10:57:54","date_gmt":"2024-08-07T02:57:54","guid":{"rendered":"https:\/\/www.alpapowder.com\/133327\/"},"modified":"2024-08-07T10:57:54","modified_gmt":"2024-08-07T02:57:54","slug":"ngoai-viec-dot-xi-mang-da-voi-con-co-nhung-ung-dung-cao-cap-nao-khac","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/133327\/","title":{"rendered":"Ngo\u00e0i vi\u1ec7c \u0111\u1ed1t xi m\u0103ng, \u0111\u00e1 v\u00f4i c\u00f2n c\u00f3 nh\u1eefng \u1ee9ng d\u1ee5ng cao c\u1ea5p n\u00e0o kh\u00e1c?"},"content":{"rendered":"

\"\"<\/p>\n

\u0110\u00e1 v\u00f4i l\u00e0 nguy\u00ean li\u1ec7u ch\u00ednh \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng. \u0110\u1ec3 s\u1ea3n xu\u1ea5t 1 t\u1ea5n clinker xi m\u0103ng c\u1ea7n ti\u00eau th\u1ee5 kho\u1ea3ng 1,4 \u0111\u1ebfn 1,5 t\u1ea5n \u0111\u00e1 v\u00f4i.<\/p>\n

V\u1eady, ngo\u00e0i vi\u1ec7c s\u1ea3n xu\u1ea5t xi m\u0103ng, \u0111\u00e1 v\u00f4i c\u00f2n c\u00f3 nh\u1eefng \u1ee9ng d\u1ee5ng cao c\u1ea5p n\u00e0o kh\u00e1c?<\/p>\n

1. S\u1ea3n xu\u1ea5t canxi oxit<\/p>\n

Canxi oxit thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch nung \u0111\u00e1 v\u00f4i \u1edf nhi\u1ec7t \u0111\u1ed9 cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00f4i s\u1ed1ng, b\u1ed9t tr\u1eafng. Theo h\u00ecnh th\u1ee9c s\u1ea3n ph\u1ea9m, canxi oxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh canxi oxit d\u1ea1ng kh\u1ed1i v\u00e0 canxi oxit d\u1ea1ng b\u1ed9t; theo h\u00e0m l\u01b0\u1ee3ng canxi v\u00e0 magi\u00ea kh\u00e1c nhau, canxi oxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh canxi oxit c\u1ea5p c\u00f4ng nghi\u1ec7p, canxi oxit c\u1ea5p th\u1ef1c ph\u1ea9m, v.v. Canxi oxit c\u1ea5p c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed1n lo\u1ea1i: S\u1ea3n ph\u1ea9m lo\u1ea1i I d\u00f9ng \u0111\u1ec3 t\u1ed5ng h\u1ee3p h\u00f3a h\u1ecdc; S\u1ea3n ph\u1ea9m lo\u1ea1i II d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t canxi cacbua; S\u1ea3n ph\u1ea9m lo\u1ea1i III d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ef1a v\u00e0 cao su; S\u1ea3n ph\u1ea9m lo\u1ea1i IV d\u00f9ng \u0111\u1ec3 kh\u1eed l\u01b0u hu\u1ef3nh trong kh\u00ed th\u1ea3i v\u00e0 c\u00e1c m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng kh\u00e1c.<\/p>\n

Canxi oxit l\u00e0 v\u1eadt li\u1ec7u ph\u1ee5 tr\u1ee3 quan tr\u1ecdng v\u00e0 l\u00e0 nguy\u00ean li\u1ec7u c\u01a1 b\u1ea3n cho th\u00e9p v\u00e0 nh\u1ef1a. N\u00f3 c\u00f3 tri\u1ec3n v\u1ecdng th\u1ecb tr\u01b0\u1eddng l\u1edbn trong c\u00e1c l\u0129nh v\u1ef1c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng nh\u01b0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i c\u00f4ng nghi\u1ec7p, \u0111\u1ed1t r\u00e1c v\u00e0 kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed th\u1ea3i. L\u00e0 m\u1ed9t oxit ki\u1ec1m ti\u1ebft ki\u1ec7m chi ph\u00ed, canxi oxit c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111\u01b0\u1eddng cao t\u1ed1c, \u0111\u01b0\u1eddng s\u1eaft cao t\u1ed1c, x\u00e2y d\u1ef1ng, c\u00f4ng nghi\u1ec7p (kim lo\u1ea1i m\u00e0u, s\u1ea3n xu\u1ea5t gi\u1ea5y, s\u1ea3n xu\u1ea5t \u0111\u01b0\u1eddng, tro soda, th\u1ef1c ph\u1ea9m, y h\u1ecdc, v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng), n\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c, v\u00e0 l\u00e0 m\u1ed9t nguy\u00ean li\u1ec7u th\u00f4 c\u01a1 b\u1ea3n quan tr\u1ecdng.<\/p>\n

2. S\u1ea3n xu\u1ea5t canxi hydroxit<\/p>\n

Canxi hydroxit \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh b\u1eb1ng c\u00e1ch ti\u00eau h\u00f3a canxi oxit v\u00e0 n\u01b0\u1edbc. C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a n\u00f3 l\u00e0 Ca(OH)2, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00f4i t\u00f4i v\u00e0 v\u00f4i t\u00f4i. Dung d\u1ecbch n\u01b0\u1edbc c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u01b0\u1edbc v\u00f4i trong.<\/p>\n

Canxi hydroxit c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t chung c\u1ee7a m\u1ed9t ch\u1ea5t ki\u1ec1m v\u00e0 l\u00e0 m\u1ed9t ch\u1ea5t ki\u1ec1m m\u1ea1nh. V\u00ec \u0111\u1ed9 h\u00f2a tan c\u1ee7a canxi hydroxit nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi natri hydroxit v\u00e0 kali hydroxit, n\u00ean t\u00ednh \u0103n m\u00f2n v\u00e0 t\u00ednh ki\u1ec1m c\u1ee7a dung d\u1ecbch c\u1ee7a n\u00f3 t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf, v\u00ec v\u1eady n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 axit trong th\u1ef1c ph\u1ea9m \u0111\u1ec3 \u0111\u00f3ng vai tr\u00f2 \u0111\u1ec7m, trung h\u00f2a v\u00e0 \u0111\u00f4ng \u0111\u1eb7c. Canxi hydroxit c\u1ea5p th\u1ef1c ph\u1ea9m c\u00f3 ho\u1ea1t t\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i cao, c\u1ea5u tr\u00fac t\u01b0\u01a1ng \u0111\u1ed1i l\u1ecfng, \u0111\u1ed9 tinh khi\u1ebft cao, \u0111\u1ed9 tr\u1eafng t\u1ed1t, h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t th\u1ea5p v\u00e0 kh\u00f4ng ch\u1ee9a c\u00e1c nguy\u00ean t\u1ed1 c\u00f3 h\u1ea1i nh\u01b0 Pb v\u00e0 As.<\/p>\n

Canxi hydroxit \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0m nguy\u00ean li\u1ec7u trong ng\u00e0nh s\u1ea3n xu\u1ea5t ch\u1ebf ph\u1ea9m canxi, trong \u0111\u00f3 canxi gluconat l\u00e0 ph\u1ed5 bi\u1ebfn. Canxi hydroxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 axit trong s\u1eefa b\u1ed9t (bao g\u1ed3m c\u1ea3 s\u1eefa b\u1ed9t c\u00f3 \u0111\u01b0\u1eddng) v\u00e0 s\u1eefa b\u1ed9t d\u1ea1ng kem v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ebf bi\u1ebfn c\u1ee7a n\u00f3, v\u00e0 s\u1eefa c\u00f4ng th\u1ee9c cho tr\u1ebb s\u01a1 sinh. Canxi hydroxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t \u0111\u1ec7m, ch\u1ea5t trung h\u00f2a v\u00e0 ch\u1ea5t l\u00e0m \u0111\u00f4ng trong c\u00e1c s\u1ea3n ph\u1ea9m bia, pho m\u00e1t v\u00e0 ca cao. Do c\u00f3 t\u00e1c d\u1ee5ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 pH v\u00e0 \u0111\u00f4ng t\u1ee5, n\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ed5ng h\u1ee3p thu\u1ed1c v\u00e0 ph\u1ee5 gia th\u1ef1c ph\u1ea9m, t\u1ed5ng h\u1ee3p v\u1eadt li\u1ec7u sinh h\u1ecdc c\u00f4ng ngh\u1ec7 cao HA, t\u1ed5ng h\u1ee3p phosphat VC cho ph\u1ee5 gia th\u1ee9c \u0103n ch\u0103n nu\u00f4i v\u00e0 t\u1ed5ng h\u1ee3p canxi cyclohexan, canxi lactat, canxi citrat, ph\u1ee5 gia ng\u00e0nh \u0111\u01b0\u1eddng v\u00e0 x\u1eed l\u00fd n\u01b0\u1edbc v\u00e0 c\u00e1c h\u00f3a ch\u1ea5t h\u1eefu c\u01a1 cao c\u1ea5p kh\u00e1c. N\u00f3 h\u1eefu \u00edch cho vi\u1ec7c chu\u1ea9n b\u1ecb ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 axit v\u00e0 ngu\u1ed3n canxi nh\u01b0 c\u00e1c s\u1ea3n ph\u1ea9m b\u00e1n th\u00e0nh ph\u1ea9m t\u1eeb th\u1ecbt \u0103n \u0111\u01b0\u1ee3c, c\u00e1c s\u1ea3n ph\u1ea9m konjac, c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u1ed3 u\u1ed1ng v\u00e0 thu\u1ed1c th\u1ee5t th\u00e1o y t\u1ebf.<\/p>\n

3. S\u1ea3n xu\u1ea5t nano canxi cacbonat<\/p>\n

Nano canxi cacbonat l\u00e0 ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1 ch\u1ee9c n\u0103ng c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1eeb 1-100nm, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong cao su, nh\u1ef1a, s\u1ea3n xu\u1ea5t gi\u1ea5y, m\u1ef1c, l\u1edbp ph\u1ee7, ch\u1ea5t b\u1ecbt k\u00edn v\u00e0 ch\u1ea5t k\u1ebft d\u00ednh, thu\u1ed1c, kem \u0111\u00e1nh r\u0103ng, th\u1ef1c ph\u1ea9m v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c.<\/p>\n

S\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p nano canxi cacbonat ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean qu\u00e1 tr\u00ecnh cacbon h\u00f3a. Nguy\u00ean li\u1ec7u th\u00f4 c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu l\u00e0 \u0111\u00e1 v\u00f4i c\u00f3 h\u00e0m l\u01b0\u1ee3ng canxi cacbonat cao. C\u00e1c s\u1ea3n ph\u1ea9m v\u1eadt li\u1ec7u d\u1ea1ng b\u1ed9t thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch nung, ti\u00eau h\u00f3a, cacbon h\u00f3a, bi\u1ebfn t\u00ednh, ph\u00e2n t\u00e1n v\u00e0 s\u1ea5y kh\u00f4.<\/p>\n

Theo s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 d\u1ed1c c\u1ee7a h\u00e0m l\u01b0\u1ee3ng CaO trong \u0111\u00e1 v\u00f4i, \u0111\u00e1 v\u00f4i ch\u1ea5t l\u01b0\u1ee3ng cao c\u00f3 h\u00e0m l\u01b0\u1ee3ng l\u1edbn h\u01a1n 54% c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m canxi cacbonat nh\u1eb9 v\u00e0 nano canxi cacbonat c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u1ef1a cao c\u1ea5p, s\u1ea3n xu\u1ea5t gi\u1ea5y, l\u1edbp ph\u1ee7, thu\u1ed1c, \u0111i\u1ec7n t\u1eed, th\u1ef1c ph\u1ea9m v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c; \u0111\u00e1 v\u00f4i ch\u1ea5t l\u01b0\u1ee3ng trung b\u00ecnh c\u00f3 h\u00e0m l\u01b0\u1ee3ng t\u1eeb 49% \u0111\u1ebfn 53% c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t canxi oxit ho\u1ea1t t\u00ednh v\u00e0 canxi hydroxit \u0111\u01b0\u1ee3c ti\u00eau h\u00f3a t\u1eeb n\u00f3, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p dung m\u00f4i luy\u1ec7n kim, h\u00f3a ch\u1ea5t v\u00e0 ch\u1ebf bi\u1ebfn s\u00e2u th\u1ef1c ph\u1ea9m; \u0111\u00e1 v\u00f4i ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p c\u00f3 h\u00e0m l\u01b0\u1ee3ng d\u01b0\u1edbi 48% c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh xi m\u0103ng v\u00e0 ng\u00e0nh x\u00e2y d\u1ef1ng.<\/p>\n

Theo h\u00e0m l\u01b0\u1ee3ng canxi oxit kh\u00e1c nhau c\u1ee7a t\u00e0i nguy\u00ean \u0111\u00e1 v\u00f4i, nguy\u00ean li\u1ec7u \u0111\u00e1 v\u00f4i \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p li\u00ean quan kh\u00e1c nhau theo c\u00e1ch ph\u00e2n t\u1ea7ng, \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c chu\u1ed7i c\u00f4ng nghi\u1ec7p ho\u00e0n to\u00e0n kh\u00e9p k\u00edn v\u1edbi t\u00e0i nguy\u00ean ch\u1ea5t l\u01b0\u1ee3ng cao, s\u1eed d\u1ee5ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 gi\u00e1 tr\u1ecb t\u1ed1i \u0111a v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u00e1 v\u00f4i l\u00e0 nguy\u00ean li\u1ec7u ch\u00ednh \u0111\u1ec3 s\u1ea3n xu\u1ea5t xi m\u0103ng. \u0110\u1ec3 s\u1ea3n xu\u1ea5t 1 t\u1ea5n clinker xi m\u0103ng c\u1ea7n ti\u00eau th\u1ee5 kho\u1ea3ng 1,4 \u0111\u1ebfn 1,5 t\u1ea5n \u0111\u00e1 v\u00f4i.<\/p>\n","protected":false},"author":7,"featured_media":133289,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-133327","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\/133327"}],"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=133327"}],"version-history":[{"count":1,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/133327\/revisions"}],"predecessor-version":[{"id":133328,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/133327\/revisions\/133328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/133289"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=133327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=133327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=133327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}