{"id":1195,"date":"2026-01-13T09:46:42","date_gmt":"2026-01-13T01:46:42","guid":{"rendered":"https:\/\/www.daoanchemical.com\/?p=1195"},"modified":"2026-01-13T09:47:07","modified_gmt":"2026-01-13T01:47:07","slug":"the-critical-role-of-zinc-sulfate-in-mining-and-rayon-manufacturing","status":"publish","type":"post","link":"https:\/\/www.daoanchemical.com\/vi\/the-critical-role-of-zinc-sulfate-in-mining-and-rayon-manufacturing\/","title":{"rendered":"Vai tr\u00f2 quan tr\u1ecdng c\u1ee7a k\u1ebdm sunfat trong ng\u00e0nh khai th\u00e1c m\u1ecf v\u00e0 s\u1ea3n xu\u1ea5t rayon"},"content":{"rendered":"

Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t r\u1ed9ng l\u1edbn, m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t \u0111\u01b0\u1ee3c coi l\u00e0 \"si\u00eau sao\"; ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn. Nh\u1eefng h\u00f3a ch\u1ea5t kh\u00e1c v\u1eabn l\u00e0 nh\u1eefng \"anh h\u00f9ng th\u1ea7m l\u1eb7ng\", \u0111\u00f3ng vai tr\u00f2 h\u1ed7 tr\u1ee3 trong c\u00e1c d\u1ef1 \u00e1n ph\u1ee9c t\u1ea1p, n\u01a1i vai tr\u00f2 c\u1ee5 th\u1ec3 c\u1ee7a ch\u00fang kh\u00f4ng ch\u1ec9 mang l\u1ea1i l\u1ee3i \u00edch m\u00e0 c\u00f2n l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh. K\u1ebdm Sunfat<\/a><\/strong> (ZnSO\u2084) c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i v\u00e0o nh\u00f3m sau n\u00e0y.<\/p>\n

M\u1eb7c d\u00f9 h\u00e0ng ngh\u00ecn t\u1ea5n K\u1ebdm sunfat \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n th\u1ebf gi\u1edbi trong n\u00f4ng nghi\u1ec7p v\u00e0 th\u1ee9c \u0103n ch\u0103n nu\u00f4i, vai tr\u00f2 c\u1ee7a h\u00f3a ch\u1ea5t n\u00e0y trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p chuy\u00ean bi\u1ec7t nh\u01b0 khai th\u00e1c m\u1ecf v\u00e0 s\u1ea3n xu\u1ea5t s\u1ee3i t\u1ed5ng h\u1ee3p m\u1edbi th\u1ef1c s\u1ef1 th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 v\u00e0 v\u1ebb \u0111\u1eb9p h\u00f3a h\u1ecdc c\u1ee7a n\u00f3. \u0110\u1ed1i v\u1edbi m\u1ed9t k\u1ef9 s\u01b0 luy\u1ec7n kim t\u1ea1i nh\u00e0 m\u00e1y tuy\u1ec3n n\u1ed5i ho\u1eb7c m\u1ed9t k\u1ef9 s\u01b0 quy tr\u00ecnh t\u1ea1i nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t rayon, k\u1ebdm sunfat kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t h\u00f3a ch\u1ea5t trong danh s\u00e1ch kho, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t ch\u1ea5t t\u0103ng c\u01b0\u1eddng quy tr\u00ecnh ph\u1ee9c t\u1ea1p, cho ph\u00e9p t\u00e1ch c\u00e1c ch\u1ea5t v\u00e0 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh c\u00e1c ch\u1ea5t.<\/p>\n

Nhi\u1ec1u qu\u1ea3n l\u00fd mua h\u00e0ng c\u00f3 th\u1ec3 nh\u1eadn ra \u201cZinc Sulfate\u201d tr\u00ean \u0111\u01a1n \u0111\u1eb7t h\u00e0ng v\u00e0 \u0111\u01a1n gi\u1ea3n l\u00e0 mua n\u00f3 nh\u01b0 c\u00e1c m\u1eb7t h\u00e0ng kh\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t sai l\u1ea7m nghi\u00eam tr\u1ecdng. Hi\u1ec3u r\u00f5 l\u00fd do c\u1ee5 th\u1ec3 t\u1ea1i sao h\u00f3a ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o, c\u0169ng nh\u01b0 c\u00e1c quy tr\u00ecnh s\u1eed d\u1ee5ng n\u00f3, l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i, duy tr\u00ec hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a to\u00e0n b\u1ed9 nh\u00e0 m\u00e1y v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 b\u1ea3o v\u1ec7 l\u1ee3i nhu\u1eadn c\u1ee7a to\u00e0n b\u1ed9 nh\u00e0 m\u00e1y.<\/p>\n

Ngh\u1ec7 thu\u1eadt t\u00e1ch bi\u1ec7t \u2013 K\u1ebdm sunfat nh\u01b0 m\u1ed9t ch\u1ea5t \u1ee9c ch\u1ebf trong qu\u00e1 tr\u00ecnh n\u1ed5i b\u1ecdt<\/span><\/h2>\n

Quy tr\u00ecnh tuy\u1ec3n n\u1ed5i b\u1eb1ng b\u1ecdt l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh t\u1ef1u v\u0129 \u0111\u1ea1i nh\u1ea5t c\u1ee7a ng\u00e0nh luy\u1ec7n kim. \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p v\u00e0 tinh t\u1ebf, k\u1ebft h\u1ee3p gi\u1eefa h\u00f3a h\u1ecdc v\u00e0 v\u1eadt l\u00fd, gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c kho\u00e1ng v\u1eadt c\u00f3 gi\u00e1 tr\u1ecb v\u00e0 \u0111\u00e1 v\u00f4 gi\u00e1 tr\u1ecb, ho\u1eb7c th\u1eadm ch\u00ed gi\u1eefa c\u00e1c kho\u00e1ng v\u1eadt c\u00f3 gi\u00e1 tr\u1ecb kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang \u0111\u1ed1i v\u1edbi qu\u1eb7ng \u0111a kim; c\u00e1c kho\u00e1ng v\u1eadt nh\u01b0 ch\u00ec, \u0111\u1ed3ng v\u00e0 k\u1ebdm th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y c\u00f9ng nhau trong m\u1ed1i quan h\u1ec7 m\u1eadt thi\u1ebft.<\/p>\n

H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n c\u00f3 m\u1ed9t lo\u1ea1i kho\u00e1ng v\u1eadt ph\u1ee9c t\u1ea1p ch\u1ee9a c\u1ea3 galena (sunfua ch\u00ec, PbS) v\u00e0 sphalerite (sunfua k\u1ebdm, ZnS). C\u1ea3 hai \u0111\u1ec1u quan tr\u1ecdng, nh\u01b0ng ch\u00fang ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1ch ra th\u00e0nh m\u1ed9t \u201cl\u00f5i ch\u00ec\u201d v\u00e0 m\u1ed9t \u201cl\u00f5i k\u1ebdm\u201d. V\u1ea5n \u0111\u1ec1 l\u00e0 c\u1ea3 hai kho\u00e1ng v\u1eadt \u0111\u1ec1u c\u00f3 xu h\u01b0\u1edbng t\u1ef1 nhi\u00ean n\u1ed5i l\u00ean trong \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng t\u1ef1. N\u1ebfu b\u1ea1n ch\u1ec9 th\u00eam ch\u1ea5t ph\u1ee5 gia v\u00e0 c\u1ed1 g\u1eafng t\u00e1ch ch\u00fang, b\u1ea1n s\u1ebd thu \u0111\u01b0\u1ee3c m\u1ed9t h\u1ed7n h\u1ee3p c\u00f3 h\u00e0m l\u01b0\u1ee3ng th\u1ea5p, kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u th\u01b0\u01a1ng m\u1ea1i.<\/p>\n

\u0110\u00e2y l\u00e0 v\u1ecb tr\u00ed m\u00e0 k\u1ebdm sunfat \u0111\u00f3ng vai tr\u00f2 ch\u00ednh nh\u01b0 m\u1ed9t ch\u1ea5t \u1ee9c ch\u1ebf.<\/p>\n

Ch\u1ea5t \u1ee9c ch\u1ebf ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/span><\/h3>\n

Trong qu\u00e1 tr\u00ecnh n\u1ed5i b\u1ecdt, ch\u1ea5t \u1ee9c ch\u1ebf l\u00e0 m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc c\u00f3 t\u00e1c d\u1ee5ng ng\u0103n ch\u1eb7n m\u1ed9t lo\u1ea1i kho\u00e1ng ch\u1ea5t c\u1ee5 th\u1ec3 b\u00e1m v\u00e0o b\u1ecdt kh\u00ed v\u00e0 n\u1ed5i l\u00ean, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p c\u00e1c lo\u1ea1i kho\u00e1ng ch\u1ea5t kh\u00e1c n\u1ed5i l\u00ean t\u1ef1 do. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 khi\u1ebfn m\u1ed9t lo\u1ea1i kho\u00e1ng ch\u1ea5t \u201cng\u1ed3i y\u00ean v\u00e0 ch\u1edd \u0111\u1ee3i\u201d trong khi lo\u1ea1i kh\u00e1c \u0111\u01b0\u1ee3c thu h\u1ed3i.<\/p>\n

Trong tr\u01b0\u1eddng h\u1ee3p t\u00e1ch qu\u1eb7ng ch\u00ec-k\u1ebdm ho\u1eb7c \u0111\u1ed3ng-k\u1ebdm, K\u1ebdm sunfat l\u00e0 ch\u1ea5t \u1ee9c ch\u1ebf ti\u00eau chu\u1ea9n trong ng\u00e0nh cho sphalerite (kho\u00e1ng v\u1eadt k\u1ebdm).<\/p>\n

C\u01a1 ch\u1ebf: C\u00e1ch k\u1ebdm sunfat \u201cl\u00e0m m\u00f9\u201d kho\u00e1ng ch\u1ea5t k\u1ebdm<\/span><\/h3>\n

Quy tr\u00ecnh n\u00e0y l\u00e0 m\u1ed9t ki\u1ec7t t\u00e1c c\u1ee7a h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n v\u00e0 th\u1ef1c ti\u1ec5n:<\/p>\n

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  1. T\u1ea1o m\u00f4i tr\u01b0\u1eddng th\u00edch h\u1ee3p: B\u1ed9t n\u1ed5i (h\u1ed7n h\u1ee3p qu\u1eb7ng nghi\u1ec1n v\u00e0 n\u01b0\u1edbc) \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u1edf pH ki\u1ec1m, th\u01b0\u1eddng s\u1eed d\u1ee5ng v\u00f4i ho\u1eb7c soda ash. \u0110\u00e2y l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ea7u ti\u00ean.<\/li>\n
  2. Th\u00eam ch\u1ea5t \u1ee9c ch\u1ebf: K\u1ebdm sunfat sau \u0111\u00f3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o b\u1ed9t gi\u1ea5y. Trong m\u00f4i tr\u01b0\u1eddng ki\u1ec1m, c\u00e1c ion k\u1ebdm (Zn\u00b2\u207a) t\u1eeb k\u1ebdm sunfat h\u00f2a tan ph\u1ea3n \u1ee9ng \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t \u01b0a n\u01b0\u1edbc (th\u00edch n\u01b0\u1edbc), ch\u1eb3ng h\u1ea1n nh\u01b0 hydroxit k\u1ebdm [Zn(OH)\u2082] v\u00e0 ion hydroxit k\u1ebdm [Zn(OH)\u207a].<\/li>\n
  3. H\u1ea5p ph\u1ee5 ch\u1ecdn l\u1ecdc: C\u00e1c h\u1ee3p ch\u1ea5t k\u1ebdm \u01b0a n\u01b0\u1edbc n\u00e0y c\u00f3 \u00e1i l\u1ef1c h\u00f3a h\u1ecdc m\u1ea1nh v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t kho\u00e1ng v\u1eadt sphalerite (ZnS). Ch\u00fang h\u1ea5p ph\u1ee5 l\u00ean b\u1ec1 m\u1eb7t sphalerite, t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp ph\u1ee7 \u01b0a n\u01b0\u1edbc bao ph\u1ee7 b\u1ec1 m\u1eb7t.<\/li>\n
  4. \u201cL\u00e0m m\u00f9\u201d ch\u1ea5t thu th\u1eadp: Khi ch\u1ea5t thu th\u1eadp\u2014ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u00e0m cho kho\u00e1ng v\u1eadt tr\u1edf n\u00ean k\u1ef5 n\u01b0\u1edbc (hydrophobic) \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 b\u00e1m v\u00e0o bong b\u00f3ng kh\u00ed\u2014\u0111\u01b0\u1ee3c th\u00eam v\u00e0o, n\u00f3 ph\u00e1t hi\u1ec7n b\u1ec1 m\u1eb7t c\u1ee7a sphalerite \u0111\u00e3 b\u1ecb chi\u1ebfm b\u1edfi c\u00e1c h\u1ee3p ch\u1ea5t k\u1ef5 n\u01b0\u1edbc c\u1ee7a k\u1ebdm. Sphalerite \u0111\u00e3 b\u1ecb \u201cl\u00e0m m\u00f9\u201d ho\u1eb7c \u201cv\u00f4 hi\u1ec7u h\u00f3a\u201d. N\u00f3 kh\u00f4ng th\u1ec3 tr\u1edf n\u00ean k\u1ef5 n\u01b0\u1edbc v\u00e0 do \u0111\u00f3 kh\u00f4ng th\u1ec3 n\u1ed5i l\u00ean.<\/li>\n
  5. Ph\u01b0\u01a1ng ph\u00e1p tuy\u1ec3n n\u1ed5i ch\u1ecdn l\u1ecdc: Trong khi \u0111\u00f3, b\u1ec1 m\u1eb7t c\u1ee7a galena (PbS) ho\u1eb7c chalcopyrite (CuS) kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi axit sunfuric k\u1ebdm. N\u00f3 d\u1ec5 d\u00e0ng h\u1ea5p ph\u1ee5 ch\u1ea5t thu gom, tr\u1edf n\u00ean k\u1ef5 n\u01b0\u1edbc, b\u00e1m v\u00e0o bong b\u00f3ng kh\u00ed v\u00e0 n\u1ed5i l\u00ean b\u1ec1 m\u1eb7t, n\u01a1i n\u00f3 \u0111\u01b0\u1ee3c thu gom d\u01b0\u1edbi d\u1ea1ng qu\u1eb7ng ch\u00ec ho\u1eb7c \u0111\u1ed3ng c\u00f3 h\u00e0m l\u01b0\u1ee3ng cao.<\/li>\n
  6. T\u00e1i ho\u1ea1t h\u00f3a (H\u00e0nh \u0111\u1ed9ng th\u1ee9 hai): Sau khi ch\u00ec ho\u1eb7c \u0111\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf, ph\u1ea7n b\u1ed9t c\u00f2n l\u1ea1i ch\u1ee9a sphalerite b\u1ecb \u1ee9c ch\u1ebf \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn m\u1ed9t m\u1ea1ch n\u1ed5i ri\u00eang bi\u1ec7t. T\u1ea1i \u0111\u00e2y, m\u1ed9t \u201cch\u1ea5t k\u00edch ho\u1ea1t\u201d, th\u01b0\u1eddng l\u00e0 sunfat \u0111\u1ed3ng, \u0111\u01b0\u1ee3c th\u00eam v\u00e0o. C\u00e1c ion \u0111\u1ed3ng thay th\u1ebf l\u1edbp hydroxit k\u1ebdm tr\u00ean b\u1ec1 m\u1eb7t sphalerite, \u201ct\u00e1i ho\u1ea1t h\u00f3a\u201d n\u00f3. Sau \u0111\u00f3, m\u1ed9t ch\u1ea5t thu gom \u0111\u01b0\u1ee3c th\u00eam v\u00e0o, v\u00e0 sphalerite hi\u1ec7n \u0111\u00e3 tr\u1edf n\u00ean k\u1ef5 n\u01b0\u1edbc \u0111\u01b0\u1ee3c n\u1ed5i l\u00ean \u0111\u1ec3 s\u1ea3n xu\u1ea5t m\u1ed9t t\u1eadp trung k\u1ebdm ch\u1ea5t l\u01b0\u1ee3ng cao.<\/li>\n<\/ol>\n

    S\u1ef1 \u1ee9c ch\u1ebf ch\u1ecdn l\u1ecdc v\u00e0 k\u00edch ho\u1ea1t ti\u1ebfp theo, \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi K\u1ebdm Sunfat, l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a qu\u00e1 tr\u00ecnh n\u1ed5i ph\u00e2n bi\u1ec7t cho h\u1ea7u h\u1ebft c\u00e1c qu\u1eb7ng sunfua ph\u1ee9c t\u1ea1p tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n

    T\u1ea1i sao ch\u1ea5t l\u01b0\u1ee3ng quan tr\u1ecdng: T\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ea1p ch\u1ea5t<\/span><\/h3>\n

    \u0110\u1ed1i v\u1edbi m\u1ed9t k\u1ef9 s\u01b0 luy\u1ec7n kim, \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a c\u00e1c ch\u1ea5t ph\u1ea3n \u1ee9ng l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng h\u00e0ng \u0111\u1ea7u. H\u1ec7 th\u1ed1ng tuy\u1ec3n n\u1ed5i l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng tinh vi, v\u00e0 b\u1ea5t k\u1ef3 bi\u1ebfn s\u1ed1 b\u1ea5t ng\u1edd n\u00e0o c\u0169ng c\u00f3 th\u1ec3 l\u00e0m r\u1ed1i lo\u1ea1n h\u1ec7 th\u1ed1ng, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t thu h\u1ed3i kho\u00e1ng s\u1ea3n k\u00e9m v\u00e0 t\u1ed5n th\u1ea5t t\u00e0i ch\u00ednh \u0111\u00e1ng k\u1ec3. Khi l\u1ef1a ch\u1ecdn Zinc Sulfate cho \u1ee9ng d\u1ee5ng n\u00e0y, \u0111\u1ed9 tinh khi\u1ebft kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t s\u1ef1 xa x\u1ec9; \u0111\u00f3 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u thi\u1ebft y\u1ebfu.<\/p>\n

      \n
    • \u0110\u1ed9 tinh khi\u1ebft (Ph\u00e2n t\u00edch): N\u1ed3ng \u0111\u1ed9 ZnSO\u2084 th\u1ea5p h\u01a1n m\u1ee9c quy \u0111\u1ecbnh c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng nhi\u1ec1u s\u1ea3n ph\u1ea9m h\u01a1n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 \u1ee9c ch\u1ebf t\u01b0\u01a1ng t\u1ef1, d\u1eabn \u0111\u1ebfn ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 chi ph\u00ed ti\u00eau th\u1ee5 cao h\u01a1n.<\/li>\n
    • Ch\u1ea5t kh\u00f4ng tan: N\u1ed3ng \u0111\u1ed9 cao c\u1ee7a ch\u1ea5t kh\u00f4ng tan c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t v\u00e0 g\u00e2y ra s\u1ef1 h\u00ecnh th\u00e0nh \u201cch\u1ea5t nh\u1ea7y\u201d trong m\u1ea1ch, \u0111\u01b0\u1ee3c bi\u1ebft l\u00e0 c\u00f3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn hi\u1ec7u su\u1ea5t n\u1ed5i.<\/li>\n
    • T\u1ea1p ch\u1ea5t kim lo\u1ea1i: C\u00e1c t\u1ea1p ch\u1ea5t nh\u01b0 s\u1eaft ho\u1eb7c mangan c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng k\u00edch ho\u1ea1t ho\u1eb7c \u1ee9c ch\u1ebf kh\u00f4ng mong mu\u1ed1n \u0111\u1ed1i v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c trong b\u1ed9t gi\u1ea5y, l\u00e0m gi\u00e1n \u0111o\u1ea1n t\u00ednh ch\u1ecdn l\u1ecdc tinh t\u1ebf c\u1ee7a qu\u00e1 tr\u00ecnh t\u00e1ch bi\u1ec7t.<\/li>\n<\/ul>\n

      Do \u0111\u00f3, vi\u1ec7c thu \u0111\u01b0\u1ee3c m\u1ed9t h\u1ed7n h\u1ee3p k\u1ebdm sunfat c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 th\u00e0nh ph\u1ea7n \u1ed5n \u0111\u1ecbnh l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec qu\u00e1 tr\u00ecnh tuy\u1ec3n n\u1ed5i \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng hi\u1ec7u \u1ee9ng \u201cche ph\u1ee7\u201d s\u1ebd \u0111\u01b0\u1ee3c duy tr\u00ec \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1ea1nh m\u1ebd qua t\u1eebng m\u1ebb, t\u1eeb \u0111\u00f3 t\u1ed1i \u0111a h\u00f3a n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m kho\u00e1ng t\u1eadp trung cu\u1ed1i c\u00f9ng.<\/p>\n

      \"Zinc
      K\u1ebdm Sunfat<\/figcaption><\/figure>\n

      Ngh\u1ec7 thu\u1eadt h\u00ecnh th\u00e0nh \u2013 K\u1ebdm sunfat trong s\u1ea3n xu\u1ea5t rayon<\/span><\/h2>\n

      H\u00e3y chuy\u1ec3n t\u1eeb th\u1ebf gi\u1edbi kh\u1eafc nghi\u1ec7t c\u1ee7a ng\u00e0nh khai th\u00e1c sang th\u1ebf gi\u1edbi tinh t\u1ebf v\u00e0 ph\u1ee9c t\u1ea1p c\u1ee7a s\u1ea3n xu\u1ea5t s\u1ee3i t\u1ed5ng h\u1ee3p. \u1ede \u0111\u00e2y, K\u1ebdm sunfat \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 Paraphrase the text in English: Rayon c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 viscose, \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1eeb h\u1ed7n h\u1ee3p v\u1ea3i b\u00f4ng v\u00e0 polyester.<\/p>\n

      Rayon l\u00e0 m\u1ed9t lo\u1ea1i s\u1ee3i b\u00e1n t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1eeb cellulose t\u00e1i sinh, th\u01b0\u1eddng \u0111\u01b0\u1ee3c chi\u1ebft xu\u1ea5t t\u1eeb b\u1ed9t g\u1ed7. Qu\u00e1 tr\u00ecnh \u201cviscose\u201d bao g\u1ed3m vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i b\u1ed9t g\u1ed7 th\u00e0nh m\u1ed9t ch\u1ea5t l\u1ecfng \u0111\u1eb7c, s\u00e1nh nh\u01b0 m\u1eadt ong g\u1ecdi l\u00e0 dung d\u1ecbch viscose. Ph\u00e9p m\u00e0u x\u1ea3y ra \u1edf b\u01b0\u1edbc ti\u1ebfp theo: l\u00e0m \u01b0\u1edbt. \u0110\u00e2y l\u00e0 n\u01a1i ch\u1ea5t l\u1ecfng viscose \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh s\u1ee3i r\u1eafn.<\/p>\n

      B\u1ed3n t\u1eafm xoay: N\u1ed3i ch\u1ea3o c\u1ee7a s\u1ef1 bi\u1ebfn \u0111\u1ed5i<\/span><\/h3>\n

      Dung d\u1ecbch viscose \u0111\u01b0\u1ee3c \u0111\u1ea9y ra qua m\u1ed9t thi\u1ebft b\u1ecb g\u1ecdi l\u00e0 spinneret, c\u00f3 h\u00ecnh d\u1ea1ng gi\u1ed1ng nh\u01b0 m\u1ed9t th\u00e1c n\u01b0\u1edbc nh\u1ecf v\u1edbi h\u00e0ng ngh\u00ecn l\u1ed7 nh\u1ecf li ti. Dung d\u1ecbch n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a tr\u1ef1c ti\u1ebfp v\u00e0o m\u1ed9t dung d\u1ecbch h\u00f3a h\u1ecdc g\u1ecdi l\u00e0 b\u1ec3 quay s\u1ee3i ho\u1eb7c b\u1ec3 \u0111\u00f4ng t\u1ee5.<\/p>\n

      B\u1ed3n t\u1eafm n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c c\u1ea5u th\u00e0nh t\u1eeb c\u00e1c h\u00f3a ch\u1ea5t c\u00f3 \u0111\u1ed9 axit cao v\u00e0 \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng c\u1ea9n th\u1eadn, trong \u0111\u00f3 c\u00f3 axit sunfuric, natri sunfat v\u00e0 k\u1ebdm sunfat.<\/p>\n

      Khi dung d\u1ecbch viscose l\u1ecfng ch\u1ea3y v\u00e0o b\u1ec3 n\u00e0y, m\u1ed9t chu\u1ed7i ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc di\u1ec5n ra nhanh ch\u00f3ng. Dung d\u1ecbch axit sunfuric s\u1ebd trung h\u00f2a dung d\u1ecbch gi\u00e0u baz\u01a1; \u0111i\u1ec1u n\u00e0y s\u1ebd khi\u1ebfn cellulose h\u00f2a tan \u0111\u01b0\u1ee3c t\u00e1i t\u1ea1o v\u00e0 h\u00ecnh th\u00e0nh c\u00e1c s\u1ee3i r\u1eafn. Natri sunfat gi\u00fap qu\u00e1 tr\u00ecnh bay h\u01a1i n\u01b0\u1edbc trong s\u1ee3i di\u1ec5n ra. Tuy nhi\u00ean, ch\u00ednh k\u1ebdm sunfat m\u1edbi l\u00e0 ch\u1ea5t ch\u1ee7 ch\u1ed1t trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y.<\/p>\n

      Vai tr\u00f2 c\u1ee7a k\u1ebdm sunfat: Ch\u1ea5t \u1ee9c ch\u1ebf v\u00e0 ch\u1ea5t t\u1ea1o c\u1ea5u tr\u00fac\u201c<\/span><\/h3>\n

      N\u1ebfu kh\u00f4ng c\u00f3 k\u1ebdm sunfat, qu\u00e1 tr\u00ecnh t\u00e1i t\u1ea1o cellulose s\u1ebd di\u1ec5n ra g\u1ea7n nh\u01b0 t\u1ee9c th\u00ec v\u00e0 kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ee3i cellulose y\u1ebfu, gi\u00f2n, c\u00f3 m\u1eb7t c\u1eaft ngang th\u00f4 r\u00e1p, kh\u00f4ng \u0111\u1ec1u (hi\u1ec7u \u1ee9ng \u201cl\u1edbp v\u1ecf - l\u00f5i\u201d) v\u00e0 c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd k\u00e9m.<\/p>\n

      K\u1ebdm sunfat c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh t\u00e1i sinh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng:<\/p>\n

        \n
      1. T\u1ea1o th\u00e0nh h\u1ee3p ch\u1ea5t trung gian: Khi viscose \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ec3, c\u00e1c ion k\u1ebdm (Zn\u00b2\u207a) t\u1eeb mu\u1ed1i k\u1ebdm sunfat h\u00f2a tan ph\u1ea3n \u1ee9ng tr\u01b0\u1edbc ti\u00ean v\u1edbi cellulose xanthate (d\u1ea1ng h\u00f3a h\u1ecdc c\u1ee7a cellulose trong dung d\u1ecbch viscose). Ch\u00fang t\u1ea1o th\u00e0nh h\u1ee3p ch\u1ea5t trung gian, k\u1ebdm cellulose xanthate.<\/li>\n
      2. Gi\u1ea3m t\u1ed1c \u0111\u1ed9 ph\u00e2n h\u1ee7y: Ch\u1ea5t xanthate cellulose k\u1ebdm n\u00e0y \u1ed5n \u0111\u1ecbnh h\u01a1n v\u00e0 ph\u00e2n h\u1ee7y ch\u1eadm h\u01a1n nhi\u1ec1u trong b\u1ec3 axit so v\u1edbi ch\u1ea5t xanthate cellulose natri ban \u0111\u1ea7u. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u201cphanh\u201d t\u1ea1m th\u1eddi trong qu\u00e1 tr\u00ecnh t\u00e1i sinh.<\/li>\n
      3. Th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh s\u1ee3i \u0111\u1ed3ng \u0111\u1ec1u: B\u1eb1ng c\u00e1ch l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh, k\u1ebdm sunfat cho ph\u00e9p axit th\u1ea5m v\u00e0o s\u1ee3i m\u1edbi h\u00ecnh th\u00e0nh m\u1ed9t c\u00e1ch \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n tr\u01b0\u1edbc khi cellulose ho\u00e0n to\u00e0n \u0111\u00f4ng c\u1ee9ng. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn c\u1ea5u tr\u00fac s\u1ee3i \u0111\u1ed3ng nh\u1ea5t h\u01a1n, c\u00f3 \u0111\u1eb7c t\u00ednh \u201cto\u00e0n l\u00f5i\u201d.<\/li>\n
      4. N\u00e2ng cao t\u00ednh ch\u1ea5t v\u1eadt l\u00fd: Qu\u00e1 tr\u00ecnh t\u00e1i sinh c\u00f3 ki\u1ec3m so\u00e1t v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u n\u00e0y tr\u1ef1c ti\u1ebfp g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh ch\u00ednh c\u1ee7a s\u1ee3i rayon cu\u1ed1i c\u00f9ng:\n
          \n
        • \u0110\u1ed9 b\u1ec1n cao h\u01a1n (\u0110\u1ed9 c\u1ee9ng): C\u1ea5u tr\u00fac \u0111\u1ed3ng nh\u1ea5t h\u01a1n s\u1ebd m\u1ea1nh m\u1ebd v\u00e0 b\u1ec1n b\u1ec9 h\u01a1n.<\/li>\n
        • \u0110\u1ed9 gi\u00e3n d\u00e0i \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n: S\u1ee3i c\u00f3 \u0111\u1ed9 gi\u00e3n v\u00e0 \u0111\u1ed9 linh ho\u1ea1t t\u1ed1t h\u01a1n m\u00e0 kh\u00f4ng b\u1ecb \u0111\u1ee9t.<\/li>\n
        • Gi\u1ea3m \u0111\u1ed9 g\u1ee3n s\u00f3ng\/r\u0103ng c\u01b0a: M\u1eb7t c\u1eaft ngang c\u1ee7a s\u1ee3i tr\u00f2n h\u01a1n v\u00e0 \u00edt g\u1ee3n s\u00f3ng\/r\u0103ng c\u01b0a h\u01a1n, mang l\u1ea1i c\u1ea3m gi\u00e1c m\u1ec1m m\u1ea1i h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng nhu\u1ed9m m\u00e0u t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

          N\u00f3i chung, K\u1ebdm sunfat ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u201cch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh ph\u00e2n t\u1eed\u201d, n\u00f3 h\u01b0\u1edbng d\u1eabn dung d\u1ecbch cellulose l\u1ecfng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i r\u1eafn c\u00f3 c\u1ea5u tr\u00fac s\u1ee3i ph\u00e1t tri\u1ec3n t\u1ed1t v\u00e0 hi\u1ec7u qu\u1ea3. N\u1ed3ng \u0111\u1ed9 K\u1ebdm sunfat trong b\u1ec3 dung d\u1ecbch d\u00f9ng \u0111\u1ec3 k\u00e9o s\u1ee3i l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i rayon c\u00f3 \u0111\u1eb7c t\u00ednh c\u1ee5 th\u1ec3.<\/p>\n

          Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 tinh khi\u1ebft trong s\u1ea3n xu\u1ea5t s\u1ee3i<\/span><\/h3>\n

          Gi\u1ed1ng nh\u01b0 trong ng\u00e0nh khai th\u00e1c m\u1ecf, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a k\u1ebdm sunfat \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t rayon c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng h\u00e0ng \u0111\u1ea7u. Qu\u00e1 tr\u00ecnh k\u00e9o s\u1ee3i c\u1ef1c k\u1ef3 nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c t\u1ea1p ch\u1ea5t.<\/p>\n

            \n
          • S\u1eaft (Fe): T\u1ea1p ch\u1ea5t s\u1eaft c\u00f3 th\u1ec3 g\u00e2y bi\u1ebfn m\u00e0u (v\u00e0ng) tr\u00ean s\u1ee3i tr\u1eafng cu\u1ed1i c\u00f9ng v\u00e0 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c cho qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y oxy h\u00f3a, l\u00e0m suy y\u1ebfu s\u1ee3i.<\/li>\n
          • Mangan (Mn): Mangan l\u00e0 m\u1ed9t t\u1ea1p ch\u1ea5t g\u00e2y v\u1ea5n \u0111\u1ec1 kh\u00e1c c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a dung d\u1ecbch viscose v\u00e0 m\u00e0u s\u1eafc c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/li>\n
          • Ch\u1ea5t kh\u00f4ng tan: C\u00e1c h\u1ea1t r\u1eafn trong dung d\u1ecbch k\u1ebdm sunfat c\u00f3 th\u1ec3 l\u00e0m t\u1eafc c\u00e1c l\u1ed7 nh\u1ecf li ti c\u1ee7a \u0111\u1ea7u phun, d\u1eabn \u0111\u1ebfn \u0111\u1ee9t s\u1ee3i, gi\u00e1n \u0111o\u1ea1n s\u1ea3n xu\u1ea5t v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec cao.<\/li>\n<\/ul>\n

            Do \u0111\u00f3, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t rayon h\u1ea7u nh\u01b0 ch\u1ec9 s\u1eed d\u1ee5ng Zinc Sulfate c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, lo\u1ea1i k\u1ef9 thu\u1eadt, v\u1edbi h\u00e0m l\u01b0\u1ee3ng s\u1eaft, mangan v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t kh\u00e1c \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t \u1edf m\u1ee9c th\u1ea5p. Vi\u1ec7c \u0111\u1ea3m b\u1ea3o ngu\u1ed3n cung c\u1ea5p \u0111\u00e1ng tin c\u1eady \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n kh\u1eaft khe n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 s\u1ea3n xu\u1ea5t s\u1ee3i rayon ch\u1ea5t l\u01b0\u1ee3ng cao m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh.<\/p>\n

            M\u1ed9t \u0111\u00f3ng g\u00f3p nh\u1ecf v\u1edbi t\u00e1c \u0111\u1ed9ng to l\u1edbn<\/span><\/h2>\n

            T\u1eeb m\u00f4i tr\u01b0\u1eddng b\u1ee5i b\u1eb7m, s\u00f4i \u0111\u1ed9ng c\u1ee7a m\u1ed9t nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn kho\u00e1ng s\u1ea3n \u0111\u1ebfn th\u1ebf gi\u1edbi ch\u00ednh x\u00e1c v\u1ec1 m\u1eb7t h\u00f3a h\u1ecdc c\u1ee7a m\u1ed9t nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t s\u1ee3i, Zinc Sulfate th\u1ec3 hi\u1ec7n s\u1ef1 \u0111a n\u0103ng \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a m\u00ecnh.<\/p>\n

              \n
            • Trong ng\u00e0nh khai th\u00e1c m\u1ecf, \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t gi\u00fap khai th\u00e1c c\u00e1c qu\u1eb7ng ph\u1ee9c t\u1ea1p, cho ph\u00e9p t\u00e1ch bi\u1ec7t ch\u1ecdn l\u1ecdc c\u00e1c kho\u00e1ng ch\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng c\u00e1ch \u201cche ph\u1ee7\u201d k\u1ebdm sunfua, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn l\u1ee3i nhu\u1eadn v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh khai th\u00e1c.<\/li>\n
            • Trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t s\u1ee3i rayon, n\u00f3 l\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ch\u00ednh trong qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh s\u1ee3i, l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh t\u00e1i sinh \u0111\u1ec3 t\u1ea1o ra s\u1ee3i c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n, \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t h\u01a1n t\u1eeb ti\u1ec1n ch\u1ea5t l\u1ecfng.<\/li>\n<\/ul>\n

              M\u1eb7c d\u00f9 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau, y\u00eau c\u1ea7u c\u01a1 b\u1ea3n v\u1eabn gi\u1ed1ng nhau: m\u1ed9t s\u1ea3n ph\u1ea9m c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao, \u0111\u1ed3ng nh\u1ea5t v\u00e0 \u0111\u00e1ng tin c\u1eady. Vai tr\u00f2 c\u1ee7a K\u1ebdm Sunfat trong c\u00e1c l\u0129nh v\u1ef1c n\u00e0y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a h\u00f3a h\u1ecdc trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p; c\u00e1c th\u00e0nh ph\u1ea7n quan tr\u1ecdng nh\u1ea5t kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn nh\u1ea5t. Th\u01b0\u1eddng th\u00ec ch\u00ednh h\u00e0nh vi ch\u00ednh x\u00e1c, c\u00f3 m\u1ee5c ti\u00eau c\u1ee7a m\u1ed9t ch\u1ea5t ph\u1ee5 gia chuy\u00ean d\u1ee5ng m\u1edbi l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh gi\u00fap to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh di\u1ec5n ra su\u00f4n s\u1ebb.<\/p>\n

              B\u1ea5t k\u1ef3 chuy\u00ean gia n\u00e0o tham gia v\u00e0o qu\u00e1 tr\u00ecnh mua s\u1eafm trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y \u0111\u1ec1u ph\u1ea3i hi\u1ec3u r\u00f5 t\u1ea7m quan tr\u1ecdng then ch\u1ed1t c\u1ee7a vai tr\u00f2 n\u00e0y. N\u00f3 bi\u1ebfn qu\u00e1 tr\u00ecnh mua Zinc Sulfate t\u1eeb m\u1ed9t giao d\u1ecbch \u0111\u01a1n thu\u1ea7n th\u00e0nh m\u1ed9t quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c, tr\u1ef1c ti\u1ebfp h\u1ed7 tr\u1ee3 s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a quy tr\u00ecnh, ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 th\u00e0nh c\u00f4ng cu\u1ed1i c\u00f9ng c\u1ee7a doanh nghi\u1ec7p.<\/p>","protected":false},"excerpt":{"rendered":"

              Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t r\u1ed9ng l\u1edbn, m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t \u0111\u01b0\u1ee3c coi l\u00e0 \"si\u00eau sao\"; ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn. Nh\u1eefng h\u00f3a ch\u1ea5t kh\u00e1c l\u1ea1i l\u00e0 nh\u1eefng \"anh h\u00f9ng th\u1ea7m l\u1eb7ng\", \u0111\u00f3ng vai tr\u00f2 h\u1ed7 tr\u1ee3 trong c\u00e1c d\u1ef1 \u00e1n ph\u1ee9c t\u1ea1p, n\u01a1i vai tr\u00f2 c\u1ee5 th\u1ec3 c\u1ee7a ch\u00fang kh\u00f4ng ch\u1ec9 mang l\u1ea1i l\u1ee3i \u00edch m\u00e0 c\u00f2n l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh. K\u1ebdm sunfat (ZnSO\u2084) c\u0169ng thu\u1ed9c v\u00e0o nh\u00f3m n\u00e0y. Trong khi h\u00e0ng ngh\u00ecn [...]<\/p>","protected":false},"author":1,"featured_media":1075,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-overview"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1195","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/comments?post=1195"}],"version-history":[{"count":0,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1195\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media\/1075"}],"wp:attachment":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media?parent=1195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/categories?post=1195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/tags?post=1195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}