{"id":3779,"date":"2026-05-06T18:05:03","date_gmt":"2026-05-06T10:05:03","guid":{"rendered":"https:\/\/www.nonmetallic-ore.com\/?p=3779"},"modified":"2026-05-06T18:07:41","modified_gmt":"2026-05-06T10:07:41","slug":"calcium-carbonate-classification-and-grades-and-how-to-choose-the-right-grade-for-your-application","status":"publish","type":"post","link":"https:\/\/www.nonmetallic-ore.com\/vi\/calcium-carbonate-classification-and-grades-and-how-to-choose-the-right-grade-for-your-application\/","title":{"rendered":"Ph\u00e2n lo\u1ea1i v\u00e0 c\u1ea5p \u0111\u1ed9 Canxi Cacbonat v\u00e0 c\u00e1ch ch\u1ecdn c\u1ea5p \u0111\u1ed9 ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n"},"content":{"rendered":"

Canxi cacbonat (CaCO3) l\u00e0 ch\u1ea5t \u0111\u1ed9n kho\u00e1ng c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi. N\u00f3 \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 h\u00e0ng tr\u0103m tri\u1ec7u t\u1ea5n m\u1ed7i n\u0103m trong s\u1ea3n xu\u1ea5t gi\u1ea5y, nh\u1ef1a, s\u01a1n, ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng. M\u1eb7c d\u00f9 ph\u1ed5 bi\u1ebfn nh\u01b0 v\u1eady, canxi cacbonat bao g\u1ed3m nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 gi\u00e1 c\u1ea3 r\u1ea5t kh\u00e1c nhau. Canxi cacbonat nghi\u1ec1n t\u1eeb \u0111\u00e1 c\u1ea9m th\u1ea1ch kh\u00e1c v\u1edbi canxi cacbonat k\u1ebft t\u1ee7a t\u1eeb qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p h\u00f3a h\u1ecdc. Canxi cacbonat c\u1ea5u tr\u00fac canxit kh\u00e1c v\u1edbi canxi cacbonat c\u1ea5u tr\u00fac aragonit. Canxi cacbonat m\u1ecbn c\u00f3 \u0111\u01b0\u1eddng k\u00ednh D50 3 micron kh\u00e1c v\u1ec1 ch\u1ee9c n\u0103ng so v\u1edbi canxi cacbonat th\u00f4 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh D50 25 micron. Ngay c\u1ea3 khi c\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 l\u00e0 canxi cacbonat nghi\u1ec1n tr\u00ean b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn n\u00e0y tr\u00ecnh b\u00e0y n\u0103m h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i ch\u00ednh cho canxi cacbonat. \u0110\u00f3 l\u00e0 theo ngu\u1ed3n nguy\u00ean li\u1ec7u th\u00f4, quy tr\u00ecnh s\u1ea3n xu\u1ea5t, c\u1ea5u tr\u00fac tinh th\u1ec3, k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t. H\u01b0\u1edbng d\u1eabn n\u00e0y li\u00ean k\u1ebft m\u1ed7i ph\u00e2n lo\u1ea1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t m\u00e0 n\u00f3 ph\u1ee5c v\u1ee5. M\u1ee5c \u0111\u00edch kh\u00f4ng ch\u1ec9 l\u00e0 \u0111\u1ecbnh ngh\u0129a c\u00e1c lo\u1ea1i m\u00e0 c\u00f2n gi\u1ea3i th\u00edch lo\u1ea1i n\u00e0o l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

\"canxi
Canxi cacbonat<\/figcaption><\/figure>\n\n\n\n

Ph\u00e2n lo\u1ea1i theo ngu\u1ed3n nguy\u00ean li\u1ec7u th\u00f4<\/mark><\/h2>\n\n\n\n

Canxi cacbonat t\u1ef1 nhi\u00ean t\u1ed3n t\u1ea1i trong ba lo\u1ea1i \u0111\u00e1 ch\u00ednh, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1ed9 tinh khi\u1ebft kho\u00e1ng ch\u1ea5t, \u0111\u1ed9 tr\u1eafng v\u00e0 \u0111\u1eb7c t\u00ednh nghi\u1ec1n kh\u00e1c nhau. Nguy\u00ean li\u1ec7u th\u00f4 quy\u1ebft \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m t\u1ed1i \u0111a. \u0110\u00e1 v\u00f4i c\u00f3 h\u00e0m l\u01b0\u1ee3ng silica v\u00e0 t\u1ea1p ch\u1ea5t s\u1eaft cao kh\u00f4ng th\u1ec3 t\u1ea1o ra canxi cacbonat d\u1ea1ng h\u1ea1t (GCC) v\u1edbi \u0111\u1ed9 tr\u1eafng c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng gi\u1ea5y ho\u1eb7c s\u01a1n cao c\u1ea5p, b\u1ea5t k\u1ec3 \u0111\u01b0\u1ee3c nghi\u1ec1n m\u1ecbn \u0111\u1ebfn m\u1ee9c n\u00e0o.<\/p>\n\n\n\n

Nguy\u00ean li\u1ec7u th\u00f4<\/strong><\/td>S\u1ef1 h\u00ecnh th\u00e0nh<\/strong><\/td>M\u00e0u tr\u1eafng \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/strong><\/td><\/tr>
\u0110\u00e1 c\u1ea9m th\u1ea1ch<\/td>\u0110\u00e1 bi\u1ebfn ch\u1ea5t \u2014 \u0111\u00e1 v\u00f4i t\u00e1i k\u1ebft tinh d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t v\u00e0 \u00e1p su\u1ea5t.<\/td>92-97% ISO<\/td>\u0110\u1ed9 tinh khi\u1ebft cao, c\u1ea5u tr\u00fac \u0111\u1eb7c; \u0111\u1ed9 tr\u1eafng t\u1ed1t nh\u1ea5t cho d\u00f2ng s\u1ea3n ph\u1ea9m cao c\u1ea5p GCC.<\/td><\/tr>
\u0110\u00e1 v\u00f4i<\/td>\u0110\u00e1 cacbonat tr\u1ea7m t\u00edch, ch\u1ee7 y\u1ebfu l\u00e0 canxit.<\/td>88-95% ISO<\/td>Ph\u1ed5 bi\u1ebfn nh\u1ea5t; \u0111\u1ed9 tinh khi\u1ebft trung b\u00ecnh; h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t thay \u0111\u1ed5i t\u00f9y theo m\u1ecf.<\/td><\/tr>
Ph\u1ea5n<\/td>\u0110\u00e1 tr\u1ea7m t\u00edch sinh v\u1eadt vi m\u00f4 m\u1ec1m, x\u1ed1p (K\u1ef7 Ph\u1ea5n tr\u1eafng)<\/td>85-92% ISO<\/td>M\u1ec1m v\u00e0 d\u1ec5 nghi\u1ec1n; d\u00f9ng cho c\u00e1c lo\u1ea1i h\u1ea1t th\u00f4; \u0111\u1ed9 x\u1ed1p cao h\u01a1n.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u0110\u00e1 c\u1ea9m th\u1ea1ch l\u00e0 nguy\u00ean li\u1ec7u th\u00f4 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t canxit xanh cao c\u1ea5p trong c\u00e1c \u1ee9ng d\u1ee5ng tr\u00e1ng ph\u1ee7 gi\u1ea5y v\u00e0 s\u01a1n ph\u1ee7 m\u1ecbn v\u00ec qu\u00e1 tr\u00ecnh t\u00e1i k\u1ebft tinh c\u1ee7a n\u00f3 t\u1ea1o ra canxit \u0111\u1eb7c h\u01a1n, tinh khi\u1ebft h\u01a1n v\u1edbi \u0111\u1ed9 tr\u1eafng cao h\u01a1n. C\u00e1c v\u00f9ng s\u1ea3n xu\u1ea5t canxit xanh ch\u00ednh nh\u01b0 Qu\u1ea3ng T\u00e2y v\u00e0 Qu\u00fd Ch\u00e2u \u1edf Trung Qu\u1ed1c, Na Uy, Ph\u1ea7n Lan, \u00c1o \u0111\u1ec1u c\u00f3 tr\u1eef l\u01b0\u1ee3ng \u0111\u00e1 c\u1ea9m th\u1ea1ch tr\u1eafng cao. \u0110\u00e1 v\u00f4i l\u00e0 nguy\u00ean li\u1ec7u th\u00f4 d\u1ed3i d\u00e0o nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng canxit xanh ti\u00eau chu\u1ea9n. Ph\u1ea5n, m\u1eb7c d\u00f9 d\u1ec5 nghi\u1ec1n do \u0111\u1ed9 m\u1ec1m c\u1ee7a n\u00f3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c lo\u1ea1i canxit xanh th\u00f4 h\u01a1n trong v\u00f4i n\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng x\u00e2y d\u1ef1ng.<\/p>\n\n\n\n

Ph\u00e2n lo\u1ea1i theo quy tr\u00ecnh s\u1ea3n xu\u1ea5t: GCC so v\u1edbi PCC<\/mark><\/h2>\n\n\n\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t l\u00e0 y\u1ebfu t\u1ed1 ph\u00e2n lo\u1ea1i quan tr\u1ecdng nh\u1ea5t v\u1ec1 m\u1eb7t th\u01b0\u01a1ng m\u1ea1i. N\u00f3 quy\u1ebft \u0111\u1ecbnh h\u00ecnh d\u1ea1ng h\u1ea1t, kh\u1ea3 n\u0103ng \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 gi\u00e1 th\u00e0nh c\u1ee7a canxi cacbonat.<\/p>\n\n\n\n

Canxi cacbonat nghi\u1ec1n m\u1ecbn (GCC) \u2014 Canxi cacbonat n\u1eb7ng<\/mark><\/h3>\n\n\n\n

GCC \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n c\u01a1 h\u1ecdc v\u1eadt l\u00fd qu\u1eb7ng cacbonat t\u1ef1 nhi\u00ean nh\u01b0 nghi\u1ec1n, xay v\u00e0 ph\u00e2n lo\u1ea1i b\u1eb1ng kh\u00ed m\u00e0 kh\u00f4ng qua b\u1ea5t k\u1ef3 qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc n\u00e0o. S\u1ea3n ph\u1ea9m n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 canxi cacbonat "n\u1eb7ng" v\u00ec th\u1ec3 t\u00edch l\u1eafng \u0111\u1ecdng c\u1ee7a n\u00f3 nh\u1ecf h\u01a1n (1,1-1,9 mL\/g) so v\u1edbi canxi cacbonat k\u1ebft t\u1ee7a, ph\u1ea3n \u00e1nh c\u1ea5u tr\u00fac h\u1ea1t \u0111\u1eb7c h\u01a1n v\u00e0 nh\u1ecf g\u1ecdn h\u01a1n.<\/p>\n\n\n\n

B\u1ed9t gi\u1ea5y GCC \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo hai ph\u01b0\u01a1ng ph\u00e1p. Nghi\u1ec1n kh\u00f4 s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n tr\u1ee5c l\u0103n, m\u00e1y nghi\u1ec1n bi ho\u1eb7c m\u00e1y nghi\u1ec1n ph\u00e2n lo\u1ea1i kh\u00ed m\u00e0 kh\u00f4ng c\u1ea7n n\u01b0\u1edbc, t\u1ea1o ra b\u1ed9t c\u00f3 k\u00edch th\u01b0\u1edbc t\u1eeb 80 mesh (D97 kho\u1ea3ng 180 micron) \u0111\u1ebfn 2500 mesh (D97 kho\u1ea3ng 5 micron) trong m\u1ed9t chu tr\u00ecnh duy nh\u1ea5t. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t kinh t\u1ebf nh\u1ea5t cho c\u00e1c lo\u1ea1i b\u1ed9t c\u00f3 k\u00edch th\u01b0\u1edbc tr\u00ean D50 2-3 micron. Nghi\u1ec1n \u01b0\u1edbt s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n bi ho\u1eb7c m\u00e1y nghi\u1ec1n h\u1ea1t v\u1edbi n\u01b0\u1edbc v\u00e0 ch\u1ea5t ph\u00e2n t\u00e1n, t\u1ea1o ra c\u00e1c h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc t\u1eeb D50 5 micron \u0111\u1ebfn D50 0,7 micron v\u1edbi ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t h\u1eb9p \u2014 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c lo\u1ea1i b\u1ed9t gi\u1ea5y tr\u00e1ng ph\u1ee7 m\u1ecbn nh\u1ea5t, n\u01a1i vi\u1ec7c ki\u1ec3m so\u00e1t ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n\n\n\n

Canxi cacbonat k\u1ebft t\u1ee7a (PCC) \u2014 Canxi cacbonat nh\u1eb9<\/mark><\/h3>\n\n\n\n

PCC \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p h\u00f3a h\u1ecdc: \u0111\u00e1 v\u00f4i \u0111\u01b0\u1ee3c nung \u0111\u1ec3 t\u1ea1o ra v\u00f4i s\u1ed1ng (CaO) v\u00e0 CO2, v\u00f4i s\u1ed1ng \u0111\u01b0\u1ee3c t\u00f4i \u0111\u1ec3 t\u1ea1o ra v\u00f4i s\u1eefa (Ca(OH)2), v\u00e0 v\u00f4i s\u1eefa \u0111\u01b0\u1ee3c cacbonat h\u00f3a b\u1eb1ng CO2 \u0111\u1ec3 k\u1ebft t\u1ee7a CaCO3. K\u1ebft t\u1ee7a \u0111\u01b0\u1ee3c kh\u1eed n\u01b0\u1edbc, s\u1ea5y kh\u00f4 v\u00e0 x\u1eed l\u00fd th\u00e0nh s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. PCC \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 "nh\u1eb9" v\u00ec th\u1ec3 t\u00edch l\u1eafng \u0111\u1ecdng c\u1ee7a n\u00f3 (2,4-2,8 mL\/g) l\u1edbn h\u01a1n GCC. C\u00e1c h\u1ea1t c\u1ee7a n\u00f3 \u00edt \u0111\u1eb7c h\u01a1n v\u00e0 x\u1ed1p h\u01a1n.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m ch\u00ednh c\u1ee7a PCC so v\u1edbi GCC l\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t h\u00ecnh th\u00e1i h\u1ea1t. B\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cacbonat h\u00f3a, n\u1ed3ng \u0111\u1ed9 CO2, khu\u1ea5y tr\u1ed9n v\u00e0 c\u00e1c ch\u1ea5t ph\u1ee5 gia trong ph\u1ea3n \u1ee9ng k\u1ebft t\u1ee7a, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u1ed9c l\u1eadp d\u1ea1ng tinh th\u1ec3 (canxit, aragonit ho\u1eb7c vaterit), h\u00ecnh d\u1ea1ng h\u1ea1t (h\u00ecnh thoi, h\u00ecnh thang, h\u00ecnh kim, h\u00ecnh c\u1ea7u) v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t. \u0110i\u1ec1u n\u00e0y kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c v\u1edbi GCC, n\u01a1i h\u00ecnh d\u1ea1ng h\u1ea1t \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u1ea5u tr\u00fac tinh th\u1ec3 kho\u00e1ng ch\u1ea5t v\u00e0 c\u01a1 ch\u1ebf nghi\u1ec1n. Do \u0111\u00f3, PCC \u0111\u01b0\u1ee3c \u01b0u ti\u00ean s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u h\u00ecnh d\u1ea1ng h\u1ea1t c\u1ee5 th\u1ec3. Aragonit h\u00ecnh kim \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y, canxit h\u00ecnh thang cho gi\u1ea5y kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, vaterit h\u00ecnh c\u1ea7u cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n

Canxi cacbonat bi\u1ebfn t\u00ednh (ho\u1ea1t t\u00ednh)<\/mark><\/h3>\n\n\n\n

C\u1ea3 GCC v\u00e0 PCC \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t \u0111\u1ec3 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t t\u1eeb \u01b0a n\u01b0\u1edbc (c\u00e1c nh\u00f3m hydroxyl ph\u00e2n c\u1ef1c \u1edf tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean tr\u00ean b\u1ec1 m\u1eb7t CaCO3 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi ma tr\u1eadn polymer k\u1ef5 n\u01b0\u1edbc) sang k\u1ef5 n\u01b0\u1edbc. Qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch x\u1eed l\u00fd canxi cacbonat v\u1edbi axit stearic, ch\u1ea5t li\u00ean k\u1ebft titanat, ch\u1ea5t li\u00ean k\u1ebft silan ho\u1eb7c c\u00e1c ch\u1ea5t bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t kh\u00e1c.<\/p>\n\n\n\n

L\u1ee3i \u00edch th\u1ef1c ti\u1ec5n \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ef1a v\u00e0 cao su l\u00e0 r\u1ea5t \u0111\u00e1ng k\u1ec3. Canxi cacbonat kh\u00f4ng bi\u1ebfn t\u00ednh trong ma tr\u1eadn polypropylen ho\u1eb7c PVC c\u00f3 \u0111\u1ed9 b\u00e1m d\u00ednh giao di\u1ec7n k\u00e9m. H\u1ea1t ch\u1ea5t \u0111\u1ed9n th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t kho\u1ea3ng tr\u1ed1ng h\u01a1n l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 gia c\u01b0\u1eddng. Canxi cacbonat bi\u1ebfn t\u00ednh b\u1eb1ng stearat li\u00ean k\u1ebft hi\u1ec7u qu\u1ea3 h\u01a1n v\u1edbi ma tr\u1eadn polyme, c\u1ea3i thi\u1ec7n \u0111\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t, \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n \u1edf t\u1ea3i tr\u1ecdng ch\u1ea5t \u0111\u1ed9n cao h\u01a1n. Canxi cacbonat bi\u1ebfn t\u00ednh c\u00f3 gi\u00e1 cao h\u01a1n 20-50% so v\u1edbi c\u00e1c lo\u1ea1i kh\u00f4ng bi\u1ebfn t\u00ednh \u2014 \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c l\u00fd gi\u1ea3i b\u1edfi s\u1ef1 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u00f4ng th\u1ee9c v\u00e0 gi\u1ea3m l\u01b0\u1ee3ng ch\u1ea5t li\u00ean k\u1ebft c\u1ea7n thi\u1ebft t\u1ea1i nh\u00e0 m\u00e1y tr\u1ed9n.<\/p>\n\n\n\n

Nano Canxi Cacbonat<\/mark><\/h3>\n\n\n\n

Canxi cacbonat nano c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t s\u01a1 c\u1ea5p nh\u1ecf h\u01a1n 100 nm \u1edf \u00edt nh\u1ea5t m\u1ed9t chi\u1ec1u. N\u00f3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p PCC v\u1edbi \u0111i\u1ec1u ki\u1ec7n cacbon h\u00f3a \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t. \u1ede quy m\u00f4 nano, CaCO3 th\u1ec3 hi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi v\u1eadt li\u1ec7u \u1edf quy m\u00f4 micromet: di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn h\u01a1n \u0111\u00e1ng k\u1ec3, hi\u1ec7u qu\u1ea3 gia c\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n trong ma tr\u1eadn polymer v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc \u0111\u01b0\u1ee3c thay \u0111\u1ed5i.<\/p>\n\n\n\n

Trong c\u00e1c \u1ee9ng d\u1ee5ng l\u00e0m \u0111\u1ea7y gi\u1ea5y, canxi cacbonat ho\u1ea1t t\u00ednh nano mang l\u1ea1i \u0111\u1ed9 m\u1edd v\u00e0 \u0111\u1ed9 s\u00e1ng cao, b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n m\u1ecbn h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ea1t \u0111\u01b0\u1ee3c h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t \u0111\u1ed9n cao h\u01a1n m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng so v\u1edbi canxi cacbonat k\u00edch th\u01b0\u1edbc micron. Trong c\u00e1c lo\u1ea1i gi\u1ea5y \u0111\u1eb7c bi\u1ec7t (gi\u1ea5y thu\u1ed1c l\u00e1, gi\u1ea5y in m\u1ecfng, gi\u1ea5y m\u1ef9 thu\u1eadt cao c\u1ea5p), s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u1ea7u cao, kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ecbn l\u00e0m cho nano CaCO3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

Ph\u00e2n lo\u1ea1i theo c\u1ea5u tr\u00fac tinh th\u1ec3<\/mark><\/h2>\n\n\n\n

Canxi cacbonat c\u00f3 ba d\u1ea1ng th\u00f9 h\u00ecnh tinh th\u1ec3 khan v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, m\u1eadt \u0111\u1ed9 v\u00e0 h\u00ecnh th\u00e1i kh\u00e1c nhau. D\u1ea1ng tinh th\u1ec3 ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn PCC, n\u01a1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ed5ng h\u1ee3p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 t\u1ea1o ra m\u1ed9t d\u1ea1ng c\u1ee5 th\u1ec3. Trong GCC, canxit l\u00e0 d\u1ea1ng chi\u1ebfm \u01b0u th\u1ebf tuy\u1ec7t \u0111\u1ed1i v\u00ec n\u00f3 l\u00e0 d\u1ea1ng th\u00f9 h\u00ecnh \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc.<\/p>\n\n\n\n

D\u1ea1ng tinh th\u1ec3<\/strong><\/td>H\u1ec7 tinh th\u1ec3<\/strong><\/td>S\u1ef1 \u1ed5n \u0111\u1ecbnh<\/strong><\/td>Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (g\/cm3)<\/strong><\/td>H\u00ecnh th\u00e1i \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr>
canxit<\/td>Tam gi\u00e1c<\/td>\u1ed4n \u0111\u1ecbnh nh\u1ea5t \u2014 v\u1ec1 m\u1eb7t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc<\/td>2.71<\/td>H\u00ecnh thoi, h\u00ecnh thang, h\u00ecnh l\u0103ng tr\u1ee5; nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau<\/td><\/tr>
Aragonit<\/td>h\u00ecnh thoi<\/td>Kh\u00f4ng b\u1ec1n v\u1eefng \u2014 chuy\u1ec3n h\u00f3a th\u00e0nh canxit \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 440 \u0111\u1ed9 C.<\/td>2.93<\/td>H\u00ecnh kim, h\u00ecnh que, h\u00ecnh tr\u1ee5; t\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i\/chi\u1ec1u r\u1ed9ng t\u1eeb 3:1 \u0111\u1ebfn 8:1<\/td><\/tr>
Vaterite<\/td>H\u00ecnh l\u1ee5c gi\u00e1c<\/td>K\u00e9m \u1ed5n \u0111\u1ecbnh nh\u1ea5t \u2014 d\u1ec5 d\u00e0ng chuy\u1ec3n h\u00f3a th\u00e0nh canxit<\/td>2.54<\/td>C\u00e1c kh\u1ed1i k\u1ebft t\u1ee5 h\u00ecnh c\u1ea7u, h\u00ecnh \u0111\u0129a, h\u00ecnh hoa; c\u00e1c kh\u1ed1i c\u1ea7u \u0111a tinh th\u1ec3.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

T\u1ea1i sao h\u00ecnh d\u1ea1ng tinh th\u1ec3 l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng<\/mark><\/h3>\n\n\n\n

Canxit l\u00e0 d\u1ea1ng kho\u00e1ng ch\u1ea5t ph\u1ed5 bi\u1ebfn nh\u1ea5t trong h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i GCC v\u00e0 PCC. T\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a n\u00f3 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn m\u1eb7c \u0111\u1ecbnh. PCC aragonit h\u00ecnh kim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n h\u1ea1t c\u00f3 t\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i\/\u0111\u01b0\u1eddng k\u00ednh cao. V\u00ed d\u1ee5 nh\u01b0 trong c\u00e1c \u1ee9ng d\u1ee5ng x\u1eed l\u00fd \u01b0\u1edbt gi\u1ea5y, n\u01a1i c\u00e1c h\u1ea1t h\u00ecnh kim li\u00ean k\u1ebft v\u1edbi s\u1ee3i cellulose v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y, ho\u1eb7c trong c\u00e1c ch\u1ea5t tr\u00e1m k\u00edn \u0111\u1eb7c bi\u1ec7t, n\u01a1i h\u00ecnh th\u00e1i ch\u1ea5t \u0111\u1ed9n d\u1ea1ng s\u1ee3i c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ea3y x\u1ec7. PCC aragonit h\u00ecnh kim th\u01b0\u1eddng c\u00f3 t\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i\/\u0111\u01b0\u1eddng k\u00ednh t\u1eeb 3:1 \u0111\u1ebfn 8:1.<\/p>\n\n\n\n

Vaterit r\u1ea5t hi\u1ebfm trong t\u1ef1 nhi\u00ean (ch\u1ec9 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u01a1 quan th\u00ednh gi\u00e1c c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i c\u00e1 v\u00e0 m\u1ed9t s\u1ed1 \u0111\u1ed9ng v\u1eadt kh\u00f4ng x\u01b0\u01a1ng s\u1ed1ng bi\u1ec3n) v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t t\u1ed5ng h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t. H\u00ecnh th\u00e1i h\u00ecnh c\u1ea7u c\u1ee7a n\u00f3 t\u1ea1o ra c\u00e1c h\u1ea1t PCC h\u00ecnh c\u1ea7u v\u1edbi di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn v\u00e0 n\u0103ng l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t cao. Vaterit CaCO3 h\u00ecnh c\u1ea7u \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u \u0111\u1ec3 v\u1eadn chuy\u1ec3n thu\u1ed1c (c\u1ea5u tr\u00fac x\u1ed1p c\u00f3 th\u1ec3 t\u1ea3i v\u00e0 gi\u1ea3i ph\u00f3ng c\u00e1c ho\u1ea1t ch\u1ea5t d\u01b0\u1ee3c ph\u1ea9m), m\u1ef9 ph\u1ea9m v\u00e0 l\u00e0m khu\u00f4n m\u1eabu cho t\u1ed5ng h\u1ee3p h\u00ecnh c\u1ea7u r\u1ed7ng. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ea5t \u0111\u1ed9n c\u00f4ng nghi\u1ec7p, t\u00ednh kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u1ee7a vaterit v\u00e0 s\u1ef1 chuy\u1ec3n h\u00f3a th\u00e0nh canxit theo th\u1eddi gian h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a n\u00f3.<\/p>\n\n\n\n

Ph\u00e2n lo\u1ea1i theo k\u00edch th\u01b0\u1edbc h\u1ea1t: M\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch g\u00ec<\/mark><\/h2>\n\n\n\n
C\u1ea5p<\/strong><\/td>D\u1ea3i D50<\/strong><\/td>D97 X\u1ea5p x\u1ec9<\/strong><\/td>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/td><\/tr>
GCC th\u00f4<\/td>10-75 \u00b5m<\/td>50-200 \u00b5m<\/td>V\u1eadt li\u1ec7u l\u1ea5p c\u00f4ng tr\u00ecnh, v\u00f4i n\u00f4ng nghi\u1ec7p, xi m\u0103ng, v\u1eadt li\u1ec7u n\u1ec1n \u0111\u01b0\u1eddng.<\/td><\/tr>
Fine GCC<\/td>3-10 \u00b5m<\/td>10-30 \u00b5m<\/td>Pha tr\u1ed9n nh\u1ef1a, cao su, ch\u1ea5t k\u1ebft d\u00ednh, ch\u1ea5t tr\u00e1m k\u00edn<\/td><\/tr>
GCC si\u00eau m\u1ecbn<\/td>0,5-3 \u00b5m<\/td>2-10 \u00b5m<\/td>S\u01a1n, ch\u1ea5t ph\u1ee7, ch\u1ea5t \u0111\u1ed9n gi\u1ea5y cao c\u1ea5p<\/td><\/tr>
Nano CaCO3<\/td>< 0,1 \u00b5m (100 nm)<\/td>< 0,3 \u00b5m<\/td>Gi\u1ea5y chuy\u00ean d\u1ee5ng, cao su hi\u1ec7u n\u0103ng cao, v\u1eadt li\u1ec7u composite nano<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Trong m\u1ed7i lo\u1ea1i, s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (gi\u00e1 tr\u1ecb span v\u00e0 D97) quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec D50. Hai s\u1ea3n ph\u1ea9m c\u00f3 c\u00f9ng D50 nh\u01b0ng gi\u00e1 tr\u1ecb span kh\u00e1c nhau s\u1ebd cho hi\u1ec7u su\u1ea5t r\u1ea5t kh\u00e1c nhau: s\u1ea3n ph\u1ea9m c\u00f3 span r\u1ed9ng h\u01a1n s\u1ebd c\u00f3 ph\u1ea7n \u0111u\u00f4i h\u1ea1t th\u00f4 \u0111\u00e1ng k\u1ec3, g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t trong m\u00e0ng s\u01a1n, v\u1ebft khu\u00f4n trong qu\u00e1 tr\u00ecnh \u00e9p \u0111\u00f9n m\u00e0ng v\u00e0 s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t trong cao su. Canxi cacbonat lo\u1ea1i cao c\u1ea5p c\u00f3 gi\u00e1 cao h\u01a1n kh\u00f4ng ch\u1ec9 v\u00ec m\u1ee5c ti\u00eau D50 m\u00e0 c\u00f2n v\u00ec \u0111\u1ed9 ch\u1eb7t ch\u1ebd c\u1ee7a s\u1ef1 ph\u00e2n b\u1ed1 xung quanh m\u1ee5c ti\u00eau \u0111\u00f3.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn nhanh ch\u1ecdn \u1ee9ng vi\u00ean v\u00e0o l\u1edbp<\/mark><\/h3>\n\n\n\n

\u2022 V\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y c\u00f4ng tr\u00ecnh, v\u00f4i n\u00f4ng nghi\u1ec7p: V\u00f4i th\u00f4 GCC, D97 50-200 \u00b5m \u2014 chi ph\u00ed th\u1ea5p nh\u1ea5t, s\u1ea3n l\u01b0\u1ee3ng c\u01a1 b\u1ea3n t\u1eeb m\u00e1y nghi\u1ec1n Raymond ho\u1eb7c m\u00e1y nghi\u1ec1n h\u00e0m.
\u2022 Pha tr\u1ed9n cao su v\u00e0 nh\u1ef1a ti\u00eau chu\u1ea9n: H\u1ea1t si\u00eau m\u1ecbn GCC D50 3-8 \u00b5m, bi\u1ebfn t\u00ednh b\u1eb1ng stearat \u2014 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp v\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i khi \u0111\u1ee9t.
\u2022 S\u01a1n ki\u1ebfn tr\u00fac cao c\u1ea5p: H\u1ea1t si\u00eau m\u1ecbn GCC D50 2-5 \u00b5m, D97 d\u01b0\u1edbi 12 \u00b5m, \u0111\u1ed9 tr\u1eafng tr\u00ean 93% ISO \u2014 \u0111\u1ed9 m\u1edd v\u00e0 \u0111\u1ed9 b\u00f3ng nh\u1ea1y c\u1ea3m v\u1edbi h\u1ea1t th\u00f4
\u2022 Gi\u1ea5y d\u00f9ng cho in \u1ea5n v\u00e0 vi\u1ebft: Gi\u1ea5y GCC D50 si\u00eau m\u1ecbn \u0111\u1ebfn c\u1ef1c m\u1ecbn 2-5 \u00b5m ho\u1eb7c PCC d\u1ea1ng h\u00ecnh thang \u2014 \u0111\u1ed9 m\u1edd, \u0111\u1ed9 s\u00e1ng v\u00e0 \u0111\u1ed9 m\u1ecbn
\u2022 L\u1edbp ph\u1ee7 gi\u1ea5y (gi\u1ea5y m\u1ef9 thu\u1eadt tr\u00e1ng ph\u1ee7): GCC ho\u1eb7c PCC si\u00eau m\u1ecbn D50 0,7-2 \u00b5m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p m\u00e0i \u01b0\u1edbt \u2014 l\u1edbp ph\u1ee7 y\u00eau c\u1ea7u k\u00edch th\u01b0\u1edbc h\u1ea1t r\u1ea5t m\u1ecbn v\u00e0 h\u1eb9p.
\u2022 Ch\u1ea5t tr\u00e1m ho\u1eb7c ch\u1ea5t k\u1ebft d\u00ednh hi\u1ec7u su\u1ea5t cao: Aragonit h\u00ecnh kim PCC D50 1-3 \u00b5m \u2014 t\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ea3y x\u1ec7 v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o.
\u2022 Gi\u1ea5y chuy\u00ean d\u1ee5ng (gi\u1ea5y thu\u1ed1c l\u00e1, gi\u1ea5y in m\u1ecfng): CaCO3 ho\u1ea1t t\u00ednh nano D50 d\u01b0\u1edbi 100 nm \u2014 ki\u1ec3m so\u00e1t kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u1ea7u, \u0111\u1ed9 m\u1edd v\u00e0 t\u1ed1c \u0111\u1ed9 ch\u00e1y.<\/p>\n\n\n\n

Thi\u1ebft b\u1ecb m\u00e1y m\u00f3c b\u1ed9t EPIC d\u00e0nh cho s\u1ea3n xu\u1ea5t t\u1ea1i GCC<\/mark><\/h2>\n\n\n\n

Thi\u1ebft b\u1ecb nghi\u1ec1n kh\u00f4 v\u00e0 ph\u00e2n lo\u1ea1i c\u1ee7a EPIC Powder Machinery bao ph\u1ee7 to\u00e0n b\u1ed9 d\u1ea3i s\u1ea3n xu\u1ea5t GCC t\u1eeb lo\u1ea1i m\u1ecbn \u0111\u1ebfn si\u00eau m\u1ecbn. Thi\u1ebft b\u1ecb c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1eb7c bi\u1ec7t cho quy tr\u00ecnh nghi\u1ec1n kh\u00f4 \u2014 con \u0111\u01b0\u1eddng s\u1ea3n xu\u1ea5t kinh t\u1ebf nh\u1ea5t cho GCC \u1edf D50 tr\u00ean 1-2 micron.<\/p>\n\n\n\n

\u2022 M\u00e1y nghi\u1ec1n ph\u00e2n lo\u1ea1i b\u1eb1ng kh\u00ed (d\u00f2ng ACM):<\/strong> <\/mark><\/h3>\n\n\n\n
\"0715-acm--MJW-W\"
M\u00e1y nghi\u1ec1n ph\u00e2n lo\u1ea1i kh\u00ed c\u1ee7a Epic Powder<\/figcaption><\/figure>\n\n\n\n

Lo\u1ea1t ACM<\/strong> M\u00e1y n\u00e0y d\u00f9ng cho GCC m\u1ecbn v\u00e0 si\u00eau m\u1ecbn \u1edf k\u00edch th\u01b0\u1edbc D50 3-15 micron. N\u00f3 k\u1ebft h\u1ee3p nghi\u1ec1n va \u0111\u1eadp v\u1edbi ph\u00e2n lo\u1ea1i kh\u00ed t\u00edch h\u1ee3p trong m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t. K\u00edch th\u01b0\u1edbc h\u1ea1t D50 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng t\u1ed1c \u0111\u1ed9 b\u00e1nh xe ph\u00e2n lo\u1ea1i th\u00f4ng qua bi\u1ebfn t\u1ea7n m\u00e0 kh\u00f4ng c\u1ea7n d\u1eebng d\u00e2y chuy\u1ec1n. Th\u00edch h\u1ee3p cho GCC d\u00f9ng trong s\u1ea3n xu\u1ea5t nh\u1ef1a v\u00e0 s\u01a1n. Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n v\u00e0 m\u1ea1ch \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n h\u01a1n so v\u1edbi m\u00e1y nghi\u1ec1n bi c\u1ed9ng v\u1edbi b\u1ed9 ph\u00e2n lo\u1ea1i ngo\u00e0i cho ph\u1ea1m vi \u0111\u1ed9 m\u1ecbn n\u00e0y.<\/p>\n\n\n\n

\u2022 M\u00e1y nghi\u1ec1n tr\u1ee5c l\u0103n (d\u00f2ng SRM):<\/strong> <\/mark><\/h3>\n\n\n\n
\"m\u00e1y
M\u00e1y nghi\u1ec1n tr\u1ee5c l\u0103n c\u1ee7a Epic Powder<\/figcaption><\/figure>\n\n\n\n

D\u00f2ng SRM<\/strong> M\u00e1y n\u00e0y d\u00f9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t GCC v\u1edbi k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1eeb 325 mesh (D97 x\u1ea5p x\u1ec9 45 micron) \u0111\u1ebfn 2500 mesh (D97 x\u1ea5p x\u1ec9 5 micron). M\u00e1y s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 nghi\u1ec1n n\u00e9n-c\u1eaft nhi\u1ec1u l\u1edbp v\u1edbi b\u1ed9 ph\u00e2n lo\u1ea1i VFD t\u00edch h\u1ee3p. \u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t GCC m\u1ecbn v\u00e0 si\u00eau m\u1ecbn ti\u00eau chu\u1ea9n cho c\u00e1c \u1ee9ng d\u1ee5ng trong ng\u00e0nh nh\u1ef1a, s\u01a1n v\u00e0 ch\u1ea5t \u0111\u1ed9n gi\u1ea5y. \u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 ch\u1ee7 \u0111\u1ea1o trong s\u1ea3n xu\u1ea5t GCC t\u1ea1i Trung Qu\u1ed1c \u1edf d\u1ea3i \u0111\u1ed9 m\u1ecbn n\u00e0y.<\/p>\n\n\n\n

\u2022 M\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed (d\u00f2ng ITC, MBS, CTC):<\/strong> <\/mark><\/h3>\n\n\n\n
\"m\u00e1y
M\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed Air Classifier c\u1ee7a Epic Powder<\/figcaption><\/figure>\n\n\n\n

M\u00e1y ph\u00e2n lo\u1ea1i kh\u00f4ng kh\u00ed<\/strong> C\u00e1c thi\u1ebft b\u1ecb n\u00e0y d\u00f9ng \u0111\u1ec3 ph\u00e2n lo\u1ea1i ch\u00ednh x\u00e1c GCC, gi\u00fap si\u1ebft ch\u1eb7t D97 t\u1eeb m\u1ed9t nh\u00e0 m\u00e1y hi\u1ec7n c\u00f3, s\u1ea3n xu\u1ea5t nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m kh\u00e1c nhau t\u1eeb m\u1ed9t d\u00e2y chuy\u1ec1n nghi\u1ec1n duy nh\u1ea5t, ho\u1eb7c n\u00e2ng c\u1ea5p s\u1ea3n ph\u1ea9m th\u00f4 h\u01a1n l\u00ean lo\u1ea1i m\u1ecbn h\u01a1n. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb then ch\u1ed1t cho b\u1ea5t k\u1ef3 nh\u00e0 m\u00e1y GCC n\u00e0o c\u1ea7n ph\u1ee5c v\u1ee5 nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m kh\u00e1c nhau t\u1eeb m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t duy nh\u1ea5t.<\/p>\n\n\n\n

\u2022 Thi\u1ebft b\u1ecb x\u1eed l\u00fd b\u1ec1 m\u1eb7t kh\u00f4:<\/strong> <\/mark><\/h3>\n\n\n\n

\u0110\u01a1n v\u1ecb s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t kh\u00f4<\/strong> H\u1ec7 th\u1ed1ng n\u00e0y \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p tr\u1ef1c ti\u1ebfp ph\u00eda sau b\u1ed9 ph\u00e2n lo\u1ea1i kh\u00ed \u0111\u1ec3 s\u1ea3n xu\u1ea5t GCC bi\u1ebfn t\u00ednh b\u1eb1ng stearat ho\u1eb7c x\u1eed l\u00fd b\u1eb1ng ch\u1ea5t li\u00ean k\u1ebft trong m\u1ed9t quy tr\u00ecnh li\u00ean t\u1ee5c. B\u1ed9t GCC tho\u00e1t ra kh\u1ecfi b\u1ed9 ph\u00e2n lo\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 50-80 \u0111\u1ed9 C, gi\u00fap th\u00fac \u0111\u1ea9y \u0111\u1ed9ng h\u1ecdc ph\u1ea3n \u1ee9ng c\u1ee7a ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t m\u00e0 kh\u00f4ng c\u1ea7n b\u01b0\u1edbc gia nhi\u1ec7t ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi b\u1ed9t gi\u1ea5y GCC si\u00eau m\u1ecbn nghi\u1ec1n \u01b0\u1edbt (D50 d\u01b0\u1edbi 1 micron d\u00f9ng cho gi\u1ea5y ph\u1ee7 cao c\u1ea5p), quy tr\u00ecnh nghi\u1ec1n \u01b0\u1edbt s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb kh\u00e1c \u2013 m\u00e1y nghi\u1ec1n bi ho\u1eb7c m\u00e1y nghi\u1ec1n khu\u1ea5y \u2013 n\u1eb1m ngo\u00e0i ph\u1ea1m vi s\u1ea3n ph\u1ea9m hi\u1ec7n t\u1ea1i c\u1ee7a EPIC Powder. Thi\u1ebft b\u1ecb c\u1ee7a ch\u00fang t\u00f4i chuy\u00ean v\u1ec1 quy tr\u00ecnh nghi\u1ec1n kh\u00f4, chi\u1ebfm ph\u1ea7n l\u1edbn s\u1ea3n l\u01b0\u1ee3ng GCC v\u00e0 ph\u1ee5c v\u1ee5 t\u1ea5t c\u1ea3 c\u00e1c th\u1ecb tr\u01b0\u1eddng t\u1eeb c\u1ea5p x\u00e2y d\u1ef1ng \u0111\u1ebfn c\u1ea5p gi\u1ea5y ph\u1ee7 cao c\u1ea5p v\u1edbi D50 2-3 micron.<\/p>\n\n\n\n

Ch\u1ebf bi\u1ebfn Canxi Cacbonat cho m\u1ed9t lo\u1ea1i s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3 tr\u00ean th\u1ecb tr\u01b0\u1eddng?<\/mark><\/h2>\n\n\n\n

EPIC Powder Machinery thi\u1ebft k\u1ebf v\u00e0 cung c\u1ea5p h\u1ec7 th\u1ed1ng nghi\u1ec1n kh\u00f4 v\u00e0 ph\u00e2n lo\u1ea1i cho s\u1ea3n xu\u1ea5t t\u1ea1i khu v\u1ef1c GCC \u2014 t\u1eeb lo\u1ea1i 80 mesh d\u00f9ng trong x\u00e2y d\u1ef1ng \u0111\u1ebfn lo\u1ea1i si\u00eau m\u1ecbn 2500 mesh d\u00f9ng cho s\u01a1n ph\u1ee7 v\u00e0 gi\u1ea5y. H\u00e3y cho ch\u00fang t\u00f4i bi\u1ebft nguy\u00ean li\u1ec7u \u0111\u00e1 v\u00f4i ho\u1eb7c \u0111\u00e1 c\u1ea9m th\u1ea1ch b\u1ea1n \u0111ang s\u1eed d\u1ee5ng, k\u00edch th\u01b0\u1edbc h\u1ea1t D50 v\u00e0 D97 m\u1ee5c ti\u00eau, \u1ee9ng d\u1ee5ng th\u1ecb tr\u01b0\u1eddng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n, ch\u00fang t\u00f4i s\u1ebd \u0111\u1ec1 xu\u1ea5t c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p v\u1edbi d\u1eef li\u1ec7u v\u1ec1 n\u0103ng su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng d\u1ef1 ki\u1ebfn.
B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng th\u1eed v\u1eadt li\u1ec7u mi\u1ec5n ph\u00ed t\u1ea1i c\u01a1 s\u1edf nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a ch\u00fang t\u00f4i tr\u01b0\u1edbc khi cam k\u1ebft mua b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o.
Y\u00eau c\u1ea7u t\u01b0 v\u1ea5n quy tr\u00ecnh mi\u1ec5n ph\u00ed: www.nonmetallic-ore.com\/contact
Kh\u00e1m ph\u00e1 thi\u1ebft b\u1ecb nghi\u1ec1n GCC c\u1ee7a ch\u00fang t\u00f4i: www.nonmetallic-ore.com<\/strong><\/p>\n\n\n\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/mark><\/h2>\n\n\n\n

T\u00f4i n\u00ean ch\u1ec9 \u0111\u1ecbnh gi\u00e1 tr\u1ecb D50 c\u1ee7a canxi cacbonat l\u00e0 bao nhi\u00eau cho \u1ee9ng d\u1ee5ng pha tr\u1ed9n nh\u1ef1a?<\/mark><\/h3>\n\n\n\n

\u0110\u1ed1i v\u1edbi vi\u1ec7c ph\u1ed1i tr\u1ed9n nh\u1ef1a, k\u00edch th\u01b0\u1edbc h\u1ea1t D50 ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i polymer, h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t \u0111\u1ed9n v\u00e0 c\u00e1c y\u00eau c\u1ea7u c\u01a1 h\u1ecdc c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. C\u00e1c h\u1ee3p ch\u1ea5t polyolefin (PP, PE, EVA) ti\u00eau chu\u1ea9n d\u00f9ng cho bao b\u00ec v\u00e0 h\u00e0ng ti\u00eau d\u00f9ng th\u01b0\u1eddng s\u1eed d\u1ee5ng GCC m\u1ecbn v\u1edbi k\u00edch th\u01b0\u1edbc D50 t\u1eeb 3-8 micron, \u0111\u01b0\u1ee3c bi\u1ebfn t\u00ednh b\u1eb1ng stearat. \u1ede k\u00edch th\u01b0\u1edbc h\u1ea1t n\u00e0y, ch\u1ea5t \u0111\u1ed9n ph\u00e2n b\u1ed1 t\u1ed1t trong ch\u1ea5t n\u00f3ng ch\u1ea3y, kh\u00f4ng g\u00e2y ra v\u1ebft khu\u00f4n trong qu\u00e1 tr\u00ecnh \u00e9p \u0111\u00f9n v\u00e0 mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng h\u1ee3p l\u00fd gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp. <\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t \u0111\u1ed9n cao h\u01a1n (tr\u00ean 40% theo tr\u1ecdng l\u01b0\u1ee3ng), GCC m\u1ecbn h\u01a1n \u1edf D50 2-4 micron gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n v\u00e0 gi\u1ea3m xu h\u01b0\u1edbng v\u00f3n c\u1ee5c. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i nh\u1ef1a k\u1ef9 thu\u1eadt hi\u1ec7u n\u0103ng cao, n\u01a1i y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc t\u1ed1i \u0111a, GCC si\u00eau m\u1ecbn \u1edf D50 1-3 micron v\u1edbi x\u1eed l\u00fd b\u1ec1 m\u1eb7t b\u1eb1ng ch\u1ea5t li\u00ean k\u1ebft (silan ho\u1eb7c titanat) cung c\u1ea5p li\u00ean k\u1ebft giao di\u1ec7n t\u1ed1t h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 gia c\u01b0\u1eddng cao h\u01a1n so v\u1edbi ch\u1ec9 x\u1eed l\u00fd b\u1eb1ng stearat. Gi\u1edbi h\u1ea1n tr\u00ean D97 c\u0169ng quan tr\u1ecdng nh\u01b0 D50 \u0111\u1ed1i v\u1edbi nh\u1ef1a. Ph\u1ea7n \u0111u\u00f4i th\u00f4 tr\u00ean 20 micron g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t v\u00e0 c\u00f3 th\u1ec3 kh\u1edfi ph\u00e1t n\u1ee9t do \u1ee9ng su\u1ea5t. H\u00e3y ch\u1ec9 \u0111\u1ecbnh c\u1ea3 gi\u1edbi h\u1ea1n t\u1ed1i \u0111a D50 v\u00e0 D97 trong \u0111\u1eb7c t\u1ea3 v\u1eadt li\u1ec7u \u0111\u1ea7u v\u00e0o c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

T\u1ea1i sao \u0111\u1ed9 tr\u1eafng l\u1ea1i kh\u00e1c nhau gi\u1eefa c\u00e1c lo\u1ea1i canxi cacbonat v\u00e0 \u1ee9ng d\u1ee5ng n\u00e0o nh\u1ea1y c\u1ea3m nh\u1ea5t v\u1edbi \u0111i\u1ec1u n\u00e0y?<\/mark><\/h3>\n\n\n\n

\u0110\u1ed9 tr\u1eafng c\u1ee7a canxi cacbonat \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u1ed9 s\u00e1ng ISO (ph\u1ea7n tr\u0103m ph\u1ea3n x\u1ea1 \u1edf b\u01b0\u1edbc s\u00f3ng 457 nm) v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00e0m l\u01b0\u1ee3ng s\u1eaft v\u00e0 mangan trong nguy\u00ean li\u1ec7u th\u00f4. Oxit s\u1eaft (Fe2O3) v\u00e0 oxit mangan (MnO) l\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t m\u00e0u v\u00e0ng n\u00e2u h\u1ea5p th\u1ee5 \u00e1nh s\u00e1ng xanh v\u00e0 l\u00e0m gi\u1ea3m \u0111\u1ed9 tr\u1eafng \u0111o \u0111\u01b0\u1ee3c. \u0110\u00e1 c\u1ea9m th\u1ea1ch c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft th\u1ea5p (Fe2O3 d\u01b0\u1edbi 0,05%) c\u00f3 th\u1ec3 t\u1ea1o ra canxi cacbonat tinh khi\u1ebft (GCC) v\u1edbi \u0111\u1ed9 tr\u1eafng tr\u00ean 95% ISO. \u0110\u00e1 v\u00f4i c\u00f3 h\u00e0m l\u01b0\u1ee3ng s\u1eaft cao h\u01a1n ch\u1ec9 c\u00f3 th\u1ec3 t\u1ea1o ra GCC \u1edf m\u1ee9c 88-93% ISO b\u1ea5t k\u1ec3 \u0111\u1ed9 m\u1ecbn khi nghi\u1ec1n. <\/p>\n\n\n\n

C\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 \u0111\u1ed9 nh\u1ea1y c\u1ea3m cao nh\u1ea5t v\u1edbi \u0111\u1ed9 tr\u1eafng bao g\u1ed3m: l\u1edbp ph\u1ee7 gi\u1ea5y (trong \u0111\u00f3 \u0111\u1ed9 tr\u1eafng d\u01b0\u1edbi ti\u00eau chu\u1ea9n 92% ISO g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u1ed1 v\u00e0ng r\u00f5 r\u1ec7t tr\u00ean gi\u1ea5y), s\u01a1n ki\u1ebfn tr\u00fac cao c\u1ea5p (trong \u0111\u00f3 h\u00e0m l\u01b0\u1ee3ng titan dioxide ph\u1ea3i \u0111\u01b0\u1ee3c t\u0103ng l\u00ean \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho ch\u1ea5t \u0111\u1ed9n c\u00f3 \u0111\u1ed9 tr\u1eafng th\u1ea5p h\u01a1n, l\u00e0m t\u0103ng chi ph\u00ed c\u00f4ng th\u1ee9c), v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ebfp x\u00fac v\u1edbi th\u1ef1c ph\u1ea9m v\u00e0 d\u01b0\u1ee3c ph\u1ea9m (n\u01a1i c\u00f3 c\u00e1c gi\u1edbi h\u1ea1n \u0111\u1ed9 tinh khi\u1ebft nghi\u00eam ng\u1eb7t). V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, cao su v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng n\u00f4ng nghi\u1ec7p c\u00f3 \u0111\u1ed9 nh\u1ea1y c\u1ea3m th\u1ea5p v\u1edbi \u0111\u1ed9 tr\u1eafng v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng GCC c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb \u0111\u00e1 v\u00f4i v\u1edbi \u0111\u1ed9 tinh khi\u1ebft th\u1ea5p h\u01a1n m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t. N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u \u0111\u1ed9 tr\u1eafng tr\u00ean ti\u00eau chu\u1ea9n 93% ISO, h\u00e3y ch\u1ec9 \u0111\u1ecbnh nguy\u00ean li\u1ec7u th\u00f4 l\u00e0 \u0111\u00e1 c\u1ea9m th\u1ea1ch ho\u1eb7c \u0111\u00e1 v\u00f4i c\u00f3 \u0111\u1ed9 tr\u1eafng cao v\u00e0 y\u00eau c\u1ea7u ch\u1ee9ng nh\u1eadn \u0111\u1ed9 tr\u1eafng cho m\u1ed7i l\u00f4 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

\n