{"id":111291,"date":"2021-09-13T11:32:46","date_gmt":"2021-09-13T03:32:46","guid":{"rendered":"https:\/\/www.alpapowder.com\/111291\/"},"modified":"2021-09-13T11:32:46","modified_gmt":"2021-09-13T03:32:46","slug":"ung-dung-cua-may-nghien-phan-luc-trong-san-xuat-titanium-dioxide","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/111291\/","title":{"rendered":"\u1ee8ng d\u1ee5ng c\u1ee7a m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c trong s\u1ea3n xu\u1ea5t Titanium Dioxide"},"content":{"rendered":"

Titanium dioxide \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t m\u00e0u c\u00f3 t\u00ednh ch\u1ea5t quang h\u1ecdc tuy\u1ec7t v\u1eddi v\u00e0 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u1ed5n \u0111\u1ecbnh. Titanium dioxide c\u00f3 y\u00eau c\u1ea7u r\u1ea5t cao v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t, ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 \u0111\u1ed9 tinh khi\u1ebft. N\u00f3i chung, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a titan \u0111i\u00f4x\u00edt d\u1ef1a tr\u00ean d\u1ea3i b\u01b0\u1edbc s\u00f3ng c\u1ee7a \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y, n\u1eb1m trong kho\u1ea3ng t\u1eeb 0,15m \u0111\u1ebfn 0,35m. V\u00e0 l\u00e0 m\u1ed9t ch\u1ea5t m\u00e0u c\u01a1 b\u1ea3n m\u00e0u tr\u1eafng, n\u00f3 r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi s\u1ef1 gia t\u0103ng c\u1ee7a c\u00e1c t\u1ea1p ch\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 t\u1ea1p ch\u1ea5t s\u1eaft, v\u00e0 s\u1ef1 gia t\u0103ng \u0111\u1ed9 nghi\u1ec1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ph\u1ea3i nh\u1ecf h\u01a1n 5 ppm. Ngo\u00e0i ra, c\u1ea7n c\u00f3 titanium dioxide \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t trong c\u00e1c h\u1ec7 s\u01a1n kh\u00e1c nhau. Do \u0111\u00f3, c\u00e1c thi\u1ebft b\u1ecb nghi\u1ec1n c\u01a1 kh\u00ed n\u00f3i chung kh\u00f3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u, do \u0111\u00f3 c\u00f4ng \u0111o\u1ea1n nghi\u1ec1n cu\u1ed1i c\u00f9ng (nghi\u1ec1n th\u00e0nh ph\u1ea9m) titan \u0111ioxit hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t m\u00e1y bay ph\u1ea3n l\u1ef1c trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc l\u1ef1a ch\u1ecdn.<\/p>\n

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Theo y\u00eau c\u1ea7u nghi\u1ec1n c\u1ee7a titan \u0111i\u00f4x\u00edt: ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t h\u1eb9p, \u00edt gia t\u0103ng t\u1ea1p ch\u1ea5t, kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t, v.v. v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u c\u1ee7a \u0111i\u00f4x\u00edt titan: \u0111\u1ed9 nh\u1edbt cao, t\u00ednh l\u01b0u \u0111\u1ed9ng k\u00e9m, k\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ecbn v\u00e0 d\u1ec5 b\u00e1m v\u00e0o th\u00e0nh, v.v. Hi\u1ec7n nay, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t titan dioxit trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc l\u1ef1a ch\u1ecdn t\u1ef1 ph\u00e2n ph\u1ed1i M\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c ki\u1ec3u ph\u1eb3ng (c\u00f2n g\u1ecdi l\u00e0 ki\u1ec3u \u0111\u0129a n\u1eb1m ngang) v\u1edbi ch\u1ee9c n\u0103ng c\u1ea5p cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m thi\u1ebft b\u1ecb nghi\u1ec1n cu\u1ed1i c\u00f9ng cho titan dioxit; v\u00e0 h\u01a1i qu\u00e1 nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m m\u00f4i ch\u1ea5t l\u00e0m vi\u1ec7c nghi\u1ec1n. Do h\u01a1i n\u01b0\u1edbc d\u1ec5 ki\u1ebfm v\u00e0 r\u1ebb n\u00ean \u00e1p su\u1ea5t c\u1ee7a m\u00f4i ch\u1ea5t l\u00e0m vi\u1ec7c b\u1eb1ng h\u01a1i cao h\u01a1n nhi\u1ec1u so v\u1edbi kh\u00ed n\u00e9n v\u00e0 c\u0169ng d\u1ec5 t\u0103ng n\u00ean n\u0103ng l\u01b0\u1ee3ng d\u00f2ng ch\u1ea3y c\u1ee7a h\u01a1i l\u1edbn h\u01a1n kh\u00ed n\u00e9n. \u0110\u1ed3ng th\u1eddi, \u0111\u1ed9 s\u1ea1ch c\u1ee7a h\u01a1i qu\u00e1 nhi\u1ec7t cao h\u01a1n kh\u00ed n\u00e9n, \u0111\u1ed9 nh\u1edbt th\u1ea5p, kh\u00f4ng c\u00f3 t\u0129nh \u0111i\u1ec7n v\u00e0 trong khi nghi\u1ec1n c\u00f3 th\u1ec3 kh\u1eed t\u0129nh \u0111i\u1ec7n do va ch\u1ea1m v\u00e0 ma s\u00e1t c\u1ee7a v\u1eadt li\u1ec7u, v\u00e0 gi\u1ea3m s\u1ef1 k\u1ebft d\u00ednh th\u1ee9 c\u1ea5p c\u1ee7a v\u1eadt li\u1ec7u d\u1ea1ng b\u1ed9t. Ngo\u00e0i ra, m\u00e0i trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n \u1ee9ng d\u1ee5ng c\u1ee7a titanium dioxide v\u00e0 t\u0103ng t\u00ednh l\u01b0u \u0111\u1ed9ng c\u1ee7a titanium dioxide. Vi\u1ec7c s\u1eed d\u1ee5ng h\u01a1i n\u01b0\u1edbc qu\u00e1 nhi\u1ec7t c\u00f3 m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p, ch\u1ec9 b\u1eb1ng 30% \u0111\u1ebfn 65% so v\u1edbi kh\u00ed n\u00e9n. Ngo\u00e0i ra, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n ph\u1eb3ng, c\u00e1c ch\u1ea5t ph\u1ee5 gia h\u1eefu c\u01a1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o \u0111\u1ec3 s\u1eeda \u0111\u1ed5i m\u1ed9t c\u00e1ch h\u1eefu c\u01a1 b\u1ec1 m\u1eb7t c\u1ee7a titanium dioxide trong khi nghi\u1ec1n th\u00e0nh b\u1ed9t, \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n c\u1ee7a titanium dioxide trong c\u00e1c h\u1ec7 th\u1ed1ng \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p titanium dioxide, y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb ng\u00e0y c\u00e0ng cao. V\u1edbi ti\u1ec1n \u0111\u1ec1 \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy tr\u00ecnh v\u00e0 y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng, quy m\u00f4 l\u1edbn v\u00e0 h\u1ec7 th\u1ed1ng h\u00f3a thi\u1ebft b\u1ecb l\u00e0 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng. Qu\u00e1 tr\u00ecnh m\u00e0i d\u00f2ng kh\u00ed c\u0169ng li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a titanium dioxide. N\u0103ng su\u1ea5t s\u1ea3n xu\u1ea5t c\u1ee7a m\u00e1y b\u1ed9t kh\u00ed c\u0169ng \u0111\u00e3 t\u0103ng t\u1eeb 1,2t \/ h l\u00ean 1,5 t \/ h l\u00fac \u0111\u1ea7u l\u00ean 2,5 t \/ h hi\u1ec7n t\u1ea1i l\u00ean 3,5 t \/ h. N\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ed9t kh\u00ed c\u0169ng \u0111\u00e3 t\u0103ng t\u1eeb d\u00e2y chuy\u1ec1n \u0111\u01a1n 10.000 t\u1ea5n \/ a l\u00ean d\u00e2y chuy\u1ec1n \u0111\u01a1n hi\u1ec7n nay 2 10.000 t\u1ea5n \/ a, ph\u01b0\u01a1ng th\u1ee9c thu gom c\u0169ng \u0111\u01b0\u1ee3c thay \u0111\u1ed5i t\u1eeb thu gom \u01b0\u1edbt t\u01b0\u01a1ng \u0111\u1ed1i l\u1ea1c h\u1eadu sang thu gom kh\u00f4 ti\u00ean ti\u1ebfn. , gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 n\u0103ng su\u1ea5t m\u1ed9t l\u1ea7n v\u00e0 gi\u1ea3m l\u00e3ng ph\u00ed. V\u1edbi vi\u1ec7c ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m ph\u00e1t th\u1ea3i, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 gi\u1ea3m chi ph\u00ed c\u00e0ng cao, c\u1ea5u h\u00ecnh c\u1ee7a h\u1ec7 th\u1ed1ng kh\u00ed – b\u1ed9t c\u00e0ng h\u1ee3p l\u00fd v\u00e0 t\u1eadn d\u1ee5ng h\u1ebft nhi\u1ec7t th\u1ea3i c\u1ee7a kh\u00ed th\u1ea3i. Tr\u01b0\u1edbc \u0111\u00e2y, ph\u01b0\u01a1ng ph\u00e1p thu gom kh\u00ed v\u00e0 b\u1ed9t ch\u1ee7 y\u1ebfu l\u00e0 thu \u01b0\u1edbt, t\u1ee9c l\u00e0 nguy\u00ean li\u1ec7u t\u1eeb m\u00e1y kh\u00ed v\u00e0 b\u1ed9t tr\u01b0\u1edbc ti\u00ean \u0111i v\u00e0o xyclon \u0111\u1ec3 t\u00e1ch h\u01a1i – r\u1eafn, v\u00e0 c\u00e1c v\u1eadt li\u1ec7u t\u00e1ch ra \u0111\u01b0\u1ee3c th\u1ea3i ra b\u1edfi b\u1ed9 n\u1ea1p sao \u1edf \u0111\u00e1y c\u1ee7a xyclon \u0111\u1ec3 l\u00e0m m\u00e1t v\u00e0 \u0111\u00f3ng g\u00f3i. V\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c t\u00e1ch \u0111i v\u00e0o th\u00e1p phun v\u1edbi d\u00f2ng kh\u00ed \u0111\u1ec3 l\u00e0m m\u00e1t phun v\u00e0 thu gom. V\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c th\u00e1p phun thu nh\u1eadn \u1edf d\u1ea1ng b\u00f9n, ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafng, l\u1ecdc v\u00e0 l\u00e0m kh\u00f4 tr\u01b0\u1edbc khi \u0111\u01b0a tr\u1edf l\u1ea1i m\u00e1y b\u1ed9t kh\u00ed. N\u0103ng su\u1ea5t m\u1ed9t l\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh n\u00e0y r\u1ea5t th\u1ea5p, t\u1edbi 90%, n\u0103ng l\u01b0\u1ee3ng ti\u00eau hao l\u1edbn, kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c nhi\u1ec7t th\u1ea3i, c\u01a1 b\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf. Ph\u01b0\u01a1ng ph\u00e1p thu nh\u1eadn kh\u00ed v\u00e0 b\u1ed9t hi\u1ec7n nay ch\u1ee7 y\u1ebfu l\u00e0 thu kh\u00f4, t\u1ee9c l\u00e0 nguy\u00ean li\u1ec7u t\u1eeb m\u00e1y kh\u00ed v\u00e0 b\u1ed9t tr\u01b0\u1edbc ti\u00ean \u0111i v\u00e0o b\u1ed9 l\u1ecdc t\u00fai nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec3 t\u00e1ch h\u01a1i – r\u1eafn. V\u1eadt li\u1ec7u l\u1ecdc ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao ph\u1ee7 b\u1ec1 m\u1eb7t hi\u1ec7n nay c\u00f3 t\u1ef7 l\u1ec7 t\u00e1ch l\u1edbp h\u01a1n 99,5%. C\u00e1c v\u1eadt li\u1ec7u th\u1ea3i ra \u0111\u01b0\u1ee3c th\u1ea3i qua b\u1ed9 x\u1ea3 sao \u1edf ph\u1ea7n d\u01b0\u1edbi c\u1ee7a b\u1ed9 l\u1ecdc t\u00fai nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec3 l\u00e0m m\u00e1t v\u00e0 \u0111\u00f3ng g\u00f3i. Kh\u00ed \u0111u\u00f4i nhi\u1ec7t \u0111\u1ed9 cao t\u00e1ch ra \u0111\u01b0\u1ee3c th\u1ea3i ra kh\u1ecfi khoang kh\u00f4ng kh\u00ed s\u1ea1ch \u1edf ph\u1ea7n tr\u00ean c\u1ee7a b\u1ed9 l\u1ecdc t\u00fai nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u0111i v\u00e0o thi\u1ebft b\u1ecb thu h\u1ed3i nhi\u1ec7t th\u1ea3i kh\u00ed \u0111u\u00f4i \u0111\u1ec3 t\u1eadn d\u1ee5ng nhi\u1ec7t th\u1ea3i.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft b\u1ecb phay ph\u1ea3n l\u1ef1c<\/strong><\/p>\n

(1) M\u00e1y nghi\u1ec1n b\u1ed9t: L\u00e0 thi\u1ebft b\u1ecb quan tr\u1ecdng nh\u1ea5t trong qu\u00e1 tr\u00ecnh nghi\u1ec1n b\u1eb1ng m\u00e1y n\u00e9n kh\u00ed, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u00e1y nghi\u1ec1n b\u1ed9t kh\u00ed quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m. M\u00e1y b\u1ed9t kh\u00ed \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 thi\u1ebft k\u1ebf h\u1ee3p l\u00fd, s\u1ea3n xu\u1ea5t t\u1ed1t, \u0111\u1ed9ng n\u0103ng t\u00e1c \u0111\u1ed9ng cao, hi\u1ec7u qu\u1ea3 ph\u00e2n lo\u1ea1i t\u1ed1t, ch\u1ecbu m\u00e0i m\u00f2n v\u00e0 ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao. V\u00ec v\u1eady, vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e1y b\u1ed9t ga l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng.<\/p>\n

(2) Ch\u1ea5t l\u01b0\u1ee3ng h\u01a1i: Ch\u1ea5t l\u1ecfng l\u00e0m vi\u1ec7c nghi\u1ec1n c\u1ee7a m\u00e1y phay ph\u1ea3n l\u1ef1c l\u00e0 h\u01a1i qu\u00e1 nhi\u1ec7t. N\u1ebfu ch\u1ea5t l\u01b0\u1ee3ng h\u01a1i kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u nghi\u1ec1n s\u1ebd \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng kh\u00ed v\u00e0 b\u1ed9t. N\u00f3i chung, c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u0111\u1ed9ng c\u01a1 b\u1ed9t kh\u00ed \u0111\u1ed1i v\u1edbi h\u01a1i n\u01b0\u1edbc l\u00e0: \u00e1p su\u1ea5t t\u1eeb \u200b\u200b1,6 \u0111\u1ebfn 2,0 MPa v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1eeb 290 \u00b0 C \u0111\u1ebfn 310 \u00b0 C. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u1ea5p h\u01a1n y\u00eau c\u1ea7u s\u1ebd g\u00e2y ra \u0111\u1ed9ng n\u0103ng t\u00e1c \u0111\u1ed9ng th\u1ea5p, l\u1ef1c m\u00e0i gi\u1ea3m, h\u1ec7 th\u1ed1ng kh\u00f4ng \u0111\u1ee7 nhi\u1ec7t, v\u1eadt li\u1ec7u d\u1ec5 b\u1ecb \u1ea9m s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 m\u00e0i, g\u00e2y t\u1eafc ngh\u1ebdn h\u1ec7 th\u1ed1ng l\u00e0m cho h\u1ec7 th\u1ed1ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c. th\u00f4ng th\u01b0\u1eddng; N\u1ebfu nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t qu\u00e1 cao, thi\u1ebft b\u1ecb trong h\u1ec7 th\u1ed1ng s\u1ebd g\u00e2y ra h\u01b0 h\u1ecfng.<\/p>\n

(3) Ki\u1ec3m so\u00e1t quy tr\u00ecnh: Qu\u00e1 tr\u00ecnh nghi\u1ec1n d\u00f2ng kh\u00ed y\u00eau c\u1ea7u ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c. S\u1ef1 dao \u0111\u1ed9ng c\u1ee7a h\u01a1i n\u01b0\u1edbc v\u00e0 s\u1ef1 dao \u0111\u1ed9ng c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng th\u1ee9c \u0103n c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong m\u1ed9t ph\u1ea1m vi nh\u1ea5t \u0111\u1ecbnh, v\u00e0 ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh t\u1eeb t\u1eeb trong qu\u00e1 tr\u00ecnh \u0111i\u1ec1u ch\u1ec9nh, nghi\u00eam c\u1ea5m vi\u1ec7c t\u0103ng gi\u1ea3m. Ngo\u00e0i ra, m\u1ed9t khi h\u1ec7 th\u1ed1ng gas-b\u1ed9t ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, n\u00f3 n\u00ean duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 tr\u00e1nh kh\u1edfi \u0111\u1ed9ng v\u00e0 t\u1eaft m\u00e1y th\u01b0\u1eddng xuy\u00ean. H\u01a1n n\u1eefa, c\u00e1c quy tr\u00ecnh v\u1eadn h\u00e0nh c\u1ea7n \u0111\u01b0\u1ee3c tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t khi kh\u1edfi \u0111\u1ed9ng v\u00e0 d\u1eebng.<\/p>\n

(4) Gi\u00e1m s\u00e1t h\u1ec7 th\u1ed1ng: \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, c\u00e1c thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed h\u1ee3p l\u00fd c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u1ecbp th\u1eddi theo s\u1ef1 thay \u0111\u1ed5i c\u1ee7a t\u00ecnh h\u00ecnh.<\/p>\n

 <\/p>\n

Ngu\u1ed3n b\u00e0i vi\u1ebft: China Powder Network<\/p>\n","protected":false},"excerpt":{"rendered":"

Titanium dioxide \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t m\u00e0u c\u00f3 t\u00ednh ch\u1ea5t quang h\u1ecdc tuy\u1ec7t v\u1eddi v\u00e0 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u1ed5n \u0111\u1ecbnh. Titanium dioxide c\u00f3 y\u00eau c\u1ea7u r\u1ea5t cao v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t, ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 \u0111\u1ed9 tinh khi\u1ebft.<\/p>\n","protected":false},"author":6,"featured_media":84022,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-111291","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\/111291","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\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=111291"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/111291\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/84022"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=111291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=111291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=111291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}