CN102616797B - Purification method for mica - Google Patents
Purification method for mica Download PDFInfo
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- CN102616797B CN102616797B CN 201210134174 CN201210134174A CN102616797B CN 102616797 B CN102616797 B CN 102616797B CN 201210134174 CN201210134174 CN 201210134174 CN 201210134174 A CN201210134174 A CN 201210134174A CN 102616797 B CN102616797 B CN 102616797B
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Abstract
The invention discloses a purification method for mica, which relates to mica. The invention provides a purification method for mica, which can obviously simplify processes. The purification method comprises the following steps of: putting a mica raw material and alkali into water to obtain slurry; putting the slurry in a hydrothermal kettle for heat preservation; dissolving the slurry subjected to heat preservation into hydrochloric acid, and filtering out insoluble substances after reacting; and filtering, water washing and drying the insoluble substances to obtain purified mica. According to the purification method, the mica is purified by utilizing a hydrothermal kettle steaming and boiling treatment process, so that the purification method has the advantages of simplicity in process,good operability, low equipment requirement, moderate treatment condition, wide application range and the like and can be applied to purification of various types and different qualities of mica (white mica, black mica, brown mica and lithia mica); and the purified mica has good quality, and can be widely applied to various high-end fields and can meet the requirement of various special properties (such as high insulativity), so that the added value of the purified mica and the economic value of enterprises can be greatly improved.
Description
Technical field
The present invention relates to a kind of method of purification of mica.
Background technology
Mineral wealth are non-renewable, and high-quality mineral wealth are very rare especially.Along with the continuous expansion of mica Application Areas, also increasing to the demand of high-quality mica, therefore inferior mica raw material is improved its quality by purifying and just have very important meaning.At present, the Application Areas of mica is numerous, increases its chemical stability in the paint pigment as adding to, increases the service life, and also can increase its surperficial special optical effect; Mica after coupling agent modified can increase plasticity and the tensile strength of thermoplasticity, thermosetting resin, and reduces thermal expansion; Mica can also be used for Iron And Steel Industry, prevents that the crack from taking place, control solder flux consumption; Can be used for rubber industry, as lubricant and releasing agent; Sheet mica is still made the critical material of high frequency capacitor, deep-sea cable of excellent property etc.
The main place of production of China's MICA has Altay area, Xinjiang, area, Danba, Sichuan and the Inner Mongol your crow of soil to draw area etc.Main purification techniques and the method for existing mica have: the flotation process of carrying out ore dressing according to the Surface Physical Chemistry different in kind of mica and impurities thereof; Adopt multistage screening, according to mica and the impurities air blast process that the difference of floating velocity is classified in air-flow thereof.
Chinese patent 200710193533.6 discloses a kind of method that reclaims mica from contain the mica mine tailing; Chinese patent 201010201661 discloses a kind of method with the oleic acid floatation on mica; Chinese patent 201020166321 discloses a kind of for the device of removing mica impurity.
Summary of the invention
The object of the present invention is to provide a kind of method of purification that can obviously simplify the mica of technology.
The present invention includes following steps:
1) mica raw material and alkali are put into water, get slurry;
2) slurry with the step 1) gained places water heating kettle to be incubated;
3) with step 2) slurry of insulation back gained is dissolved in the hydrochloric acid, and the reaction after-filtration goes out insolubles;
4) insolubles of step 3) gained is filtered, washing, oven dry, namely get the mica after the purification.
In step 1), the mass ratio of described mica raw material and alkali can be 1: (0.2～2); Described alkali can be selected from least a in sodium hydroxide, the potassium hydroxide etc.; Described mica raw material and alkali are put into can adopt behind the water stir or the method for supersound process makes slurry.
In step 2) in, the temperature of described water heating kettle can be 120～240 ℃, and the time of described insulation can be 3～9h.
In step 3), the massfraction of described hydrochloric acid can be 25%, and the temperature of described reaction can be 70 ℃, and the time of reaction can be 0.5h.
The present invention utilizes water heating kettle boiling treatment process purification mica, not only have advantages such as technology is simple, operability good, equipment requirements is low, treatment condition gentleness, and applied range, purification applicable to all kinds, different quality mica (white mica, biotite, phlogopite and lithionite etc.), mica quality better after purifying, product can be widely used in all kinds of high-end fields, and can satisfy the requirement of its various properties (as high-insulativity etc.), can greatly improve value-added content of product and economic benefit of enterprises.
The present invention is particularly good at after handling through other method such as flotation process or selection by winnowing classification, still can't remove the mica work in-process of impure mineral, low-quality mica is after the present invention handles, and its performance can reach the standard of high-quality mica, realizes being applied to the purpose in high-end applications field.
Description of drawings
Fig. 1 handles forward and backward effect comparison diagram for the mica raw material.
Fig. 2 is the forward and backward powder x-ray diffraction comparison diagram of mica sample preparation.In Fig. 2, X-coordinate be diffraction angle 2 θ/(°), ordinate zou is intensity (a.u.); Curve a is for before handling, and curve b is for after handling; Raw material is respectively quartz, mica and Gao Ling from top to bottom.
Fig. 3 is the forward and backward powder x-ray diffraction comparison diagram of mica sample preparation.In Fig. 3, X-coordinate be diffraction angle 2 θ/(°), ordinate zou is intensity (a.u.); Curve a is for before handling, and curve b is for after handling; Raw material is respectively lithionite and white mica from top to bottom.
Embodiment
Embodiment 1
In order to embody the refining effect of present technique mica, specially chosen non-mica mineral content and surpassed 75% raw material 2.9895g, and with put into water heating kettle after 3.0361g sodium hydroxide mixes, adding water to compactedness is 80%, gets mixed slurry.Water heating kettle is taken out behind 185 ℃ of insulation 6h.The material in the water heating kettle is taken out again and place beaker, the adding massfraction is 25% hydrochloric acid, at 70 ℃ of stirring reaction 0.5h after-filtration, gets chip solid powder 0.4152g.Determine that through the analysis of X-ray powder diffraction the chip solid powder is lithionite and white mica, can determine that from the analysis of X-ray powder diffraction the impurity such as kaolinite, ferric oxide, quartz the mica raw material remove substantially.
Embodiment 2
Put into water heating kettle after getting 5.004g mica raw material and 1.0017g sodium hydroxide mixing, adding water to compactedness is 75%, gets mixed slurry.Water heating kettle is taken out behind 240 ℃ of insulation 9h.Again the material in the water heating kettle is taken out and place beaker, add massfraction and be in 25% the hydrochloric acid, at 70 ℃ of stirring reaction 0.5h after-filtration, get chip solid powder 4.5381g.Determine that through the analysis of X-ray powder diffraction the chip solid powder is lithionite and white mica, can determine that from the analysis of X-ray powder diffraction the impurity such as kaolinite, ferric oxide, quartz the mica raw material remove substantially, the whiteness of Processing Example 2 back micas is 81.6%, has improved 14.1% than the whiteness 67.5% of mica raw material.
Embodiment 3
Put into water heating kettle after getting 3.0075g mica raw material and 3.0119g potassium hydroxide and 2.9879g sodium hydroxide mixing, adding water to compactedness is 80%, gets mixed slurry.Water heating kettle is taken out behind 120 ℃ of insulation 6h.Again the material in the water heating kettle is taken out and place beaker, add massfraction and be in 25% the hydrochloric acid, at 70 ℃ of stirring reaction 0.5h after-filtration, get chip solid powder 2.8531g.Determine that through the analysis of X-ray powder diffraction the chip solid powder is lithionite and white mica, can determine that from the analysis of X-ray powder diffraction the impurity such as kaolinite, ferric oxide, quartz the mica raw material remove substantially, the whiteness of handling the back mica is 75.1%, has improved 9.4% than the whiteness 65.7% of mica raw material.
Embodiment 4
Put into water heating kettle after getting 3.0024g mica raw material and 3.0064g potassium hydroxide mixing, adding water to compactedness is 80%, gets mixed slurry.Water heating kettle is taken out behind 170 ℃ of insulation 3h.Again the material in the water heating kettle is taken out and place beaker, add massfraction and be in 25% the hydrochloric acid, at 70 ℃ of stirring reaction 0.5h after-filtration, get chip solid powder 2.7986g.Determine that through the analysis of X-ray powder diffraction the chip solid powder is lithionite and white mica, can determine that from the analysis of X-ray powder diffraction the impurity such as kaolinite, ferric oxide, quartz the mica raw material remove substantially, the whiteness of handling the back mica is 77.9%, has improved 12.2% than the whiteness 65.7% of mica raw material.
Claims (7)
1. the method for purification of a mica is characterized in that may further comprise the steps:
1) mica raw material and alkali are put into water, get slurry; The mass ratio of described mica raw material and alkali is 1: 0.2～2;
2) slurry with the step 1) gained places water heating kettle to be incubated;
3) with step 2) slurry of insulation back gained is dissolved in the hydrochloric acid, and the reaction after-filtration goes out insolubles;
4) insolubles of step 3) gained is filtered, washing, oven dry, namely get the mica after the purification.
2. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 1), and described alkali is selected from least a in sodium hydroxide, the potassium hydroxide.
3. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 1), describedly mica raw material and alkali are put into the water back adopts and stirs or the method for supersound process makes slurry.
4. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 2) in, the temperature of described water heating kettle is 120～240 ℃.
5. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 2) in, the time of described insulation is 3～9h.
6. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 3), and the massfraction of described hydrochloric acid is 25%.
7. the method for purification of a kind of mica as claimed in claim 1 is characterized in that in step 3), and the temperature of described reaction is 70 ℃, and the time of reaction is 0.5h.
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| CN 201210134174 CN102616797B (en) | 2012-05-02 | 2012-05-02 | Purification method for mica |
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| CN 201210134174 CN102616797B (en) | 2012-05-02 | 2012-05-02 | Purification method for mica |
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| CN102616797B true CN102616797B (en) | 2013-10-09 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011186B (en) * | 2012-12-17 | 2015-05-20 | 中国科学院过程工程研究所 | Mica and preparation method thereof |
| CN104452428A (en) * | 2014-11-17 | 2015-03-25 | 通城县中天云母制品有限公司 | Production method of calcining type high-voltage-resisting mica paper |
| CN105733314A (en) * | 2016-02-02 | 2016-07-06 | 安徽恒昊科技有限公司 | Method for preparing industrial-grade sericite powder |
| CN105726345A (en) * | 2016-02-02 | 2016-07-06 | 安徽恒昊科技有限公司 | Method for preparing cosmetic-level sericite powder |
| CN105602003A (en) * | 2016-02-02 | 2016-05-25 | 安徽恒昊科技有限公司 | Preparation method of sericite-quartz powder |
| CN105624786B (en) * | 2016-04-06 | 2017-12-29 | 吉林省隆华测控股份有限公司 | A kind of melting method of artificial mica synthesis oversize monocrystalline |
| CN105858675B (en) * | 2016-04-06 | 2017-09-19 | 吉林省隆华测控股份有限公司 | The method of purification and device of a kind of mica powder crystal |
| CN107522207A (en) * | 2017-10-20 | 2017-12-29 | 陈键 | A kind of biotite purifying technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185916A (en) * | 2007-12-12 | 2008-05-28 | 吉林大学 | Method for recovering specular stone from debris containing specular stone |
| CN101850303A (en) * | 2010-06-17 | 2010-10-06 | 新疆有色金属研究所 | Method for performing floatation on mica by using oleic acid |
| CN102395692A (en) * | 2009-03-16 | 2012-03-28 | 联邦科学和工业研究组织 | Impurity removal from hydrated minerals |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185916A (en) * | 2007-12-12 | 2008-05-28 | 吉林大学 | Method for recovering specular stone from debris containing specular stone |
| CN102395692A (en) * | 2009-03-16 | 2012-03-28 | 联邦科学和工业研究组织 | Impurity removal from hydrated minerals |
| CN101850303A (en) * | 2010-06-17 | 2010-10-06 | 新疆有色金属研究所 | Method for performing floatation on mica by using oleic acid |
Non-Patent Citations (2)
| Title |
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| 王程等.风化低品味白云母选矿试验研究.《非金属矿》.2008,第31卷(第2期),44、45. |
| 风化低品味白云母选矿试验研究;王程等;《非金属矿》;20080331;第31卷(第2期);44、45 * |
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