{"id":129345,"date":"2023-10-11T15:47:18","date_gmt":"2023-10-11T07:47:18","guid":{"rendered":"https:\/\/www.alpapowder.com\/129345\/"},"modified":"2023-10-11T15:47:19","modified_gmt":"2023-10-11T07:47:19","slug":"10-thay-doi-lon-sau-khi-nghien-nguyen-lieu-bot-sieu-min","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/129345\/","title":{"rendered":"10 thay \u0111\u1ed5i l\u1edbn sau khi nghi\u1ec1n nguy\u00ean li\u1ec7u b\u1ed9t si\u00eau m\u1ecbn"},"content":{"rendered":"
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Nh\u1eefng thay \u0111\u1ed5i kh\u00e1c nhau x\u1ea3y ra \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c nghi\u1ec1n trong qu\u00e1 tr\u00ecnh nghi\u1ec1n l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3 so v\u1edbi qu\u00e1 tr\u00ecnh nghi\u1ec1n th\u00f4, nh\u01b0ng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh nghi\u1ec1n si\u00eau m\u1ecbn, do c\u00e1c l\u00fd do nh\u01b0 c\u01b0\u1eddng \u0111\u1ed9 nghi\u1ec1n cao, th\u1eddi gian nghi\u1ec1n d\u00e0i v\u00e0 nh\u1eefng thay \u0111\u1ed5i l\u1edbn v\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u. , n\u00f3 c\u00f3 v\u1ebb quan tr\u1ecdng. S\u1ef1 thay \u0111\u1ed5i c\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u nghi\u1ec1n do qu\u00e1 tr\u00ecnh nghi\u1ec1n si\u00eau m\u1ecbn c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng c\u01a1 h\u00f3a c\u1ee7a qu\u00e1 tr\u00ecnh nghi\u1ec1n.<\/p>\n
1. Thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc h\u1ea1t<\/p>\n
Sau khi nghi\u1ec1n si\u00eau m\u1ecbn, s\u1ef1 thay \u0111\u1ed5i r\u00f5 r\u00e0ng nh\u1ea5t c\u1ee7a ch\u1ea5t li\u1ec7u b\u1ed9t l\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ecbn h\u01a1n. Theo c\u00e1c k\u00edch th\u01b0\u1edbc h\u1ea1t kh\u00e1c nhau, b\u1ed9t si\u00eau m\u1ecbn th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh: c\u1ea5p micron (c\u1ee1 h\u1ea1t 1 ~ 30 \u03bcm), c\u1ea5p submicron (c\u1ee1 h\u1ea1t 1 ~ 0,1 \u03bcm) v\u00e0 c\u1ea5p nano (c\u1ee1 h\u1ea1t 0,001 ~ 0,1 \u03bcm).<\/p>\n
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2. Thay \u0111\u1ed5i c\u1ea5u tr\u00fac tinh th\u1ec3<\/p>\n
Trong qu\u00e1 tr\u00ecnh nghi\u1ec1n si\u00eau m\u1ecbn, do l\u1ef1c c\u01a1 h\u1ecdc m\u1ea1nh v\u00e0 b\u1ec1n, v\u1eadt li\u1ec7u b\u1ed9t b\u1ecb bi\u1ebfn d\u1ea1ng m\u1ea1ng \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau, k\u00edch th\u01b0\u1edbc h\u1ea1t tr\u1edf n\u00ean nh\u1ecf h\u01a1n, c\u1ea5u tr\u00fac tr\u1edf n\u00ean r\u1ed1i lo\u1ea1n, c\u00e1c ch\u1ea5t v\u00f4 \u0111\u1ecbnh h\u00ecnh ho\u1eb7c v\u00f4 \u0111\u1ecbnh h\u00ecnh \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t v\u00e0 th\u1eadm ch\u00ed chuy\u1ec3n \u0111\u1ed5i \u0111a tinh th\u1ec3. . Nh\u1eefng thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1eb1ng nhi\u1ec5u x\u1ea1 tia X, quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i, c\u1ed9ng h\u01b0\u1edfng t\u1eeb h\u1ea1t nh\u00e2n, c\u1ed9ng h\u01b0\u1edfng thu\u1eadn t\u1eeb \u0111i\u1ec7n t\u1eed v\u00e0 \u0111o nhi\u1ec7t l\u01b0\u1ee3ng vi sai.<\/p>\n
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3. Thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/p>\n
Do s\u1ef1 k\u00edch ho\u1ea1t c\u01a1 h\u1ecdc m\u1ea1nh m\u1ebd, v\u1eadt li\u1ec7u tr\u1ef1c ti\u1ebfp tr\u1ea3i qua c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u1ea5t \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh nghi\u1ec1n si\u00eau m\u1ecbn. C\u00e1c lo\u1ea1i ph\u1ea3n \u1ee9ng bao g\u1ed3m ph\u00e2n h\u1ee7y, ph\u1ea3n \u1ee9ng kh\u00ed-r\u1eafn, l\u1ecfng-r\u1eafn, r\u1eafn-r\u1eafn, v.v..<\/p>\n
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4. Thay \u0111\u1ed5i \u0111\u1ed9 h\u00f2a tan<\/p>\n
Ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ef1 h\u00f2a tan b\u1ed9t th\u1ea1ch anh, canxit, cassiterit, corundum, b\u00f4xit, cr\u00f4mit, magnetit, galena, titan magnetit, tro n\u00fai l\u1eeda, cao lanh, v.v. trong axit v\u00f4 c\u01a1 sau khi nghi\u1ec1n m\u1ecbn ho\u1eb7c nghi\u1ec1n si\u00eau m\u1ecbn. C\u1ea3 t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 h\u00f2a tan \u0111\u1ec1u t\u0103ng l\u00ean.<\/p>\n
5. Thay \u0111\u1ed5i t\u00ednh ch\u1ea5t thi\u00eau k\u1ebft<\/p>\n
C\u00f3 hai lo\u1ea1i thay \u0111\u1ed5i ch\u00ednh v\u1ec1 t\u00ednh ch\u1ea5t nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u do m\u00e0i m\u1ecbn ho\u1eb7c m\u00e0i si\u00eau m\u1ecbn:<\/p>\n
\u0110\u1ea7u ti\u00ean, do s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a v\u1eadt li\u1ec7u t\u0103ng l\u00ean, c\u00e1c ph\u1ea3n \u1ee9ng \u1edf pha r\u1eafn tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n, nhi\u1ec7t \u0111\u1ed9 thi\u00eau k\u1ebft c\u1ee7a s\u1ea3n ph\u1ea9m gi\u1ea3m v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a s\u1ea3n ph\u1ea9m c\u0169ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n
Th\u1ee9 hai l\u00e0 nh\u1eefng thay \u0111\u1ed5i trong c\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 s\u1ef1 v\u00f4 \u0111\u1ecbnh h\u00ecnh d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha tinh th\u1ec3.<\/p>\n
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6. Thay \u0111\u1ed5i kh\u1ea3 n\u0103ng trao \u0111\u1ed5i cation<\/p>\n