CN1693200A - Mica powder and its preparation process - Google Patents
Mica powder and its preparation process Download PDFInfo
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- CN1693200A CN1693200A CN 200510034878 CN200510034878A CN1693200A CN 1693200 A CN1693200 A CN 1693200A CN 200510034878 CN200510034878 CN 200510034878 CN 200510034878 A CN200510034878 A CN 200510034878A CN 1693200 A CN1693200 A CN 1693200A
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- mica powder
- mica
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Abstract
A process for preparing mica powder from synthetic mica includes such steps as hydraulic breaking, deawtering, grinding to obtain sludge, classifying in classifying pools, and baking.
Description
Technical field
The present invention relates to a kind of mica powder and preparation method thereof, particularly a kind of with the especially synthetic fluorophlogopite fragment [KMg of synthetic mica sheet
3(AlSi
3O
10) F
2] be that the granularity of passing through wet method preparation of raw material is less than 200 purpose mica powders and preparation method thereof.
Background technology
The synthetic mica sheet is with number of chemical raw material artificial a kind of mica crystal of synthetic under hot conditions.Synthetic fluorophlogopite [KMg
3(AlSi
3O
10) F
2] be synthetic at high temperature, therefore hydroxyl not, temperature tolerance is better.Synthetic mica is widely used in electric insulation, electronic industry with the electric edge performance of its excellence, also produces a large amount of synthetic mica fragments in addition.Mostly the synthetic mica fragment was made the not high products of value added such as synthetic mica paper, synthetic mica board in the past.Make full use of these synthetic mica fragments, will drive the fast development of whole synthetic mica industry.
The synthetic mica is compared with natural mica, and than great, the hardness height owing to be the high temperature synthetic, can not soften through calcining, soaking as natural mica, and therefore the production method of traditional natural mica powder is not suitable for the production of compound mica.Because production method can not the production quality product adapt to customer requirements and stable compound mica, thereby limit the application of compound mica.
Summary of the invention
The purpose of this invention is to provide be smooth to the touch, whiteness height, compound mica that radius-thickness ratio is big, especially synthetic fluorophlogopite powder.
The inventor finds a kind of production method of uniqueness through deep research, can produce be smooth to the touch, whiteness height, high-quality compound mica that radius-thickness ratio is big, thereby finish the present invention.
On the one hand, the invention provides a kind of mica powder, is to prepare by the method that may further comprise the steps:
(1). with synthetic mica fragment hydrofracture, obtain the A material;
(2). make the dehydration of A material, obtain the B material;
(3). B material milled with wheel roller smash slurry, obtain the C material;
(4). the C material is sent into one group of grading pool carry out classification;
(5). oven dry obtains granularity≤200 purpose mica powders.
In a kind of embodiment, described synthetic mica fragment is granularity+16 purpose fluorophlogopite sheets; Behind hydrofracture, the granularity of gained A material is 20～120 orders.
In a kind of embodiment, use the high pressure water of 1.4～1.8Mpa in the described hydrofracture.
In a kind of embodiment, the water content of described B material is 25～30% (weights).
In a kind of embodiment, the water content of described mica powder is less than 1% (weight).
In a kind of embodiment, the whiteness of gained mica powder is (for magnesium hydroxide, the whiteness of promptly setting magnesium hydroxide is 100%, and then the whiteness of mica powder is more than 90%) more than 90%, and radius-thickness ratio is more than or equal to 50.
In a kind of embodiment, the size-grade distribution of gained mica powder is as follows: d
95=138 ± 5 μ m, d
90=120 ± 3 μ m, d
50=63 ± 2 μ m, d
10=21 ± 2 μ m, d
5=15 ± 2 μ m.
In a kind of embodiment, the granularity of gained mica powder≤325 orders, size-grade distribution is as follows: d
95=95 ± 3 μ m, d
90=81 ± 3 μ m, d
50=40 ± 2 μ m, d
10=15 ± 2 μ m, d
5=11.5 ± 1 μ m.
In a kind of embodiment, the granularity of gained mica powder≤600 orders, size-grade distribution is as follows: d
95=51 ± 3 μ m, d
90=44 ± 2 μ m, d
50=23 ± 2 μ m, d
10=9.3 ± 0.8 μ m, d
5=6.61 ± 0.5 μ m.
In a kind of embodiment, the granularity of gained mica powder≤800 orders, size-grade distribution is as follows: d
95≤ 30 μ m, d
90≤ 26 μ m, d
50≤ 14 μ m, d
10≤ 5.5 μ m, d
5≤ 3.8 μ m.
On the other hand, the present invention also provides a kind of preparation method of mica powder, may further comprise the steps:
(1). with synthetic mica fragment hydrofracture, obtain the A material;
(2). make the dehydration of A material, obtain the B material;
(3). B material milled with wheel roller smash slurry, obtain the C material;
(4). the C material is sent into one group of grading pool carry out classification;
(5). oven dry obtains granularity≤200 purpose mica powders.
In a kind of embodiment, described synthetic mica fragment is granularity+16 purpose fluorophlogopite sheets; Behind hydrofracture, the granularity of gained A material is 20～120 orders.
In a kind of embodiment, use the high pressure water of 1.4～1.8MPa in the described hydrofracture.
In a kind of embodiment, described dehydrating step makes the water content of B material reach 25～30% (weights).
In a kind of embodiment, described baking step makes the water content of gained mica powder less than 1% (weight).
" d described herein
95=138 μ m " be meant that granularity accounts for 95% of cumulative volume less than the volume of the particle of 138 μ m.The rest may be inferred by analogy.
Described classification is carried out in one group of grading pool, adopt pump to connect between the grading pool, grading pool is changeable, determine according to treatment capacity, but virtual height should be at 200～600mm, can be rectangle or square, the material of any not polluted product all can be used to do grading pool, mixes inner liner abrasive resistant ceramic tile, PVC sheet material as brick, stainless steel plate, glass reinforced plastic etc.
Described oven dry is that the few characteristics of quantity adopt the drying room oven dry according to range of product is many, and material is loaded on charging tray, and charging tray is put on the truck, enters drying room and dries.Charge amount is 5kg/ dish (dry weight basis), and the time of oven dry is 18～24 hours, to the water content of product less than till 1%.
So-called wet method is a kind of production method, it be with dry method comparatively speaking, be to be the production method of medium with water.
Because production method uniqueness of the present invention, as adopt hydrofracture can make mica powder radius-thickness ratio height, the rolling gap is that 0.5～1mm can improve rolling efficient, therefore, the mica powder that the present invention produces is smooth to the touch, whiteness height (more than 90%), radius-thickness ratio big (〉=50), can be widely used in pearly pigment base material, makeup, special anticorrosive coating, high-temperaure coating, reinforced plastics, fields such as mica ceramics.
Embodiment
Embodiment 1
With selected granularity is 1 ton of the synthetic fluorophlogopite fragment of+16 purposes, is that the high-pressure hydraulic pump of 1.4MPa carries out hydrofracture with hydraulic pressure, and obtaining granularity is that 20 purpose A expect that wherein the treatment capacity of hydrofracture is 100 kilograms/hour; It is that 1 meter stainless steel tripod pendulum type batch centrifugal carries out centrifuge dehydration that A material is put into external diameter, and the time is 10 minutes, and the water content of the B material that obtains after the dehydration is 25%; Use the rolling gap as the wheel roller of 0.5mm the B material to be milled, the time of rolling is 3 hours, and the time of polishing is 0.5 hour, obtains the C material; With pump C is expected the suction grading pool then, measure to such an extent that the degree of depth of C material is 40cm that when product requirement is 200 orders, when settling velocity was 2cm/ minute, the then settled time was 20 minutes, obtaining size-grade distribution is d
95=138 ± 5 μ m, d
90=120 ± 3 μ m, d
50=63 ± 2 μ m, d
10=21 ± 2 μ m, d
5The D material of=15 ± 2 μ m; At last, D material is coiled (dry weight basis) by 5kg/ be loaded on charging tray, charging tray is put on the truck, enters drying room and dries, and after general 18 hours, can obtain water content less than 1% finished product.
Embodiment 2
With selected granularity is 1 ton of the synthetic fluorophlogopite fragment of+16 purposes, is that the high-pressure hydraulic pump of 1.8mpa carries out hydrofracture with hydraulic pressure, and obtaining granularity is that 120 purpose A expect that wherein the treatment capacity of hydrofracture is 150 kilograms/hour; It is that 1 meter stainless steel tripod pendulum type batch centrifugal carries out centrifuge dehydration that A material is put into external diameter, and the time is 15 minutes, and the water content of the B material that obtains after the dehydration is 30%; Use the rolling gap as the wheel roller of 0.8mm the B material to be milled, the time of rolling is 5 hours, and the time of polishing is 1.5 hours, obtains the C material; With pump C is expected the suction grading pool then, measure to such an extent that the degree of depth of C material is 38cm that when product requirement is 600 orders, when settling velocity was 0.55cm/ minute, the then settled time was 69 minutes, obtaining size-grade distribution is d
95=51 ± 3 μ m, d
90=44 ± 2 μ m, d
50=23 ± 2 μ m, d
10=9.3 ± 0.8 μ m, d
5The D material of=6.61 ± 0.5 μ m; At last, D material is coiled (dry weight basis) by 5kg/ be loaded on charging tray, charging tray is put on the truck, enters drying room and dries, and after general 18 hours, can obtain water content less than 1% finished product.
Claims (15)
1. mica powder is by the method preparation that may further comprise the steps:
(1). with synthetic mica fragment hydrofracture, obtain the A material;
(2). make the dehydration of A material, obtain the B material;
(3). B material milled with wheel roller smash slurry, obtain the C material;
(4). the C material is sent into one group of grading pool carry out classification;
(5). oven dry obtains granularity≤200 purpose mica powders.
2. according to the mica powder of claim 1, wherein said synthetic mica fragment is granularity+16 purpose fluorophlogopite sheets; Behind hydrofracture, the granularity of gained A material is 20～120 orders.
3. according to the mica powder of claim 1, use the high pressure water of 1.4～1.8Mpa in the wherein said hydrofracture.
4. according to the mica powder of claim 1, the water content of wherein said B material is 25～30% (weights).
5. according to the mica powder of claim 1, the water content of wherein said mica powder is less than 1% (weight).
6. according to arbitrary mica powder of claim 1 to 5, the whiteness of wherein said mica powder is that radius-thickness ratio is more than or equal to 50 more than 90%.
7. according to arbitrary mica powder of claim 1 to 5, the size-grade distribution of wherein said mica powder is as follows: d
95=138 ± 5 μ m, d
90=120 ± 3 μ m, d
50=63 ± 2 μ m, d
10=21 ± 2 μ m, d
5=15 ± 2 μ m.
8. according to arbitrary mica powder of claim 1 to 5, the granularity of wherein said mica powder≤325 orders, size-grade distribution is as follows: d
95=95 ± 3 μ m, d
90=81 ± 3 μ m, d
50=40 ± 2 μ m, d
10=15 ± 2 μ m, d
5=11.5 ± 1 μ m.
9. according to arbitrary mica powder of claim 1 to 5, the granularity of wherein said mica powder≤600 orders, size-grade distribution is as follows: d
95=51 ± 3 μ m, d
90=44 ± 2 μ m, d
50=23 ± 2 μ m, d
10=9.3 ± 0.8 μ m, d
5=6.61 ± 0.5 μ m.
10. according to arbitrary mica powder of claim 1 to 5, the granularity of wherein said mica powder≤800 orders, size-grade distribution is as follows: d
95≤ 30 μ m, d
90≤ 26 μ m, d
50≤ 14 μ m, d
10≤ 5.5 μ m, d
5≤ 3.8 μ m.
11. the preparation method of a mica powder may further comprise the steps:
(1). with synthetic mica fragment hydrofracture, obtain the A material;
(2). make the dehydration of A material, obtain the B material;
(3). B material milled with wheel roller smash slurry, obtain the C material;
(4). the C material is sent into one group of grading pool carry out classification;
(5). oven dry obtains granularity≤200 purpose mica powders.
12. according to the method for claim 11, wherein said synthetic mica fragment is granularity+16 purpose fluorophlogopite sheets; Behind hydrofracture, the granularity of gained A material is 20～120 orders.
13., use the high pressure water of 1.4～1.8Mpa in the wherein said hydrofracture according to the method for claim 11.
14. according to the method for claim 11, wherein said dehydrating step makes the water content of B material reach 25～30% (weights).
15. according to the method for claim 11, wherein said baking step makes the water content of gained mica powder less than 1% (weight).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062886A1 (en) | 2007-11-16 | 2009-05-22 | Basf Se | Bright interference pigments |
| WO2011051122A1 (en) | 2009-10-28 | 2011-05-05 | Basf Se | Pigments with improved sparkling effect |
| WO2011095447A2 (en) | 2010-02-04 | 2011-08-11 | Basf Se | Pigment compositions with improved sparkling effect |
| CN101671034B (en) * | 2009-09-21 | 2011-11-23 | 江阴市友佳珠光云母有限公司 | Synthetic mica prepared from calcined talcum and preparation method and processing method of fluorophlogopite powder and fluorophlogopite pearlescent pigment |
| CN101823723B (en) * | 2009-12-11 | 2012-07-25 | 李钦俊 | Process method for preparing ultra-fine high-brightness sericite powder by pyrophyllite |
| CN110330814A (en) * | 2019-07-25 | 2019-10-15 | 汕头市镇发珠光颜料有限公司 | A kind of grinding method of high-quality synthetic mica |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524663B (en) * | 2009-03-18 | 2013-01-16 | 福州坤彩精化有限公司 | Method for classifying compound mica |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1020708C (en) * | 1988-01-21 | 1993-05-19 | 希欧欧匹化学株式会社 | Method for producing fluorine mica |
| JP3904337B2 (en) * | 1999-02-24 | 2007-04-11 | トピー工業株式会社 | Synthetic mica powder, method for producing the same, and cosmetics containing the powder |
| JP2001206713A (en) * | 2000-01-25 | 2001-07-31 | Sekisui Plastics Co Ltd | Synthetic mica and cosmetics using the same |
| CN1253372C (en) * | 2003-09-30 | 2006-04-26 | 孙海英 | Artificial crystal synthetic mica, preparing method and apparatus thereof |
-
2005
- 2005-06-01 CN CNB2005100348788A patent/CN100335409C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062886A1 (en) | 2007-11-16 | 2009-05-22 | Basf Se | Bright interference pigments |
| CN101671034B (en) * | 2009-09-21 | 2011-11-23 | 江阴市友佳珠光云母有限公司 | Synthetic mica prepared from calcined talcum and preparation method and processing method of fluorophlogopite powder and fluorophlogopite pearlescent pigment |
| WO2011051122A1 (en) | 2009-10-28 | 2011-05-05 | Basf Se | Pigments with improved sparkling effect |
| CN101823723B (en) * | 2009-12-11 | 2012-07-25 | 李钦俊 | Process method for preparing ultra-fine high-brightness sericite powder by pyrophyllite |
| WO2011095447A2 (en) | 2010-02-04 | 2011-08-11 | Basf Se | Pigment compositions with improved sparkling effect |
| CN110330814A (en) * | 2019-07-25 | 2019-10-15 | 汕头市镇发珠光颜料有限公司 | A kind of grinding method of high-quality synthetic mica |
| CN110330814B (en) * | 2019-07-25 | 2021-05-11 | 汕头市镇发珠光颜料有限公司 | Grinding method of high-quality synthetic mica |
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| CN100335409C (en) | 2007-09-05 |
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Address after: 515000 first floor of Jia Feng mansion, B11-5 block, Shantou Free Trade Zone, Guangdong. Patentee after: Guangdong Triratna new material Science and Technology Co.,Ltd. Address before: 515000 first floor, Jia Feng mansion, B11-5 block, Shantou Free Trade Zone, Haojiang District, Shantou, Guangdong, China Patentee before: SHANTOU SANBAO MICA TECHNOLOGY CO.,LTD. Address after: 515000 first floor, Jia Feng mansion, B11-5 block, Shantou Free Trade Zone, Haojiang District, Shantou, Guangdong, China Patentee after: SHANTOU SANBAO MICA TECHNOLOGY CO.,LTD. Address before: 515041 room 902, Longxiang commercial building, Changping Road, Shantou, Guangdong Patentee before: SHANTOU FTZ SANBAO PEARL LUSTER MICA TECHNOLOGY Co.,Ltd. |
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