CN103159218A - Production method of potassium fluosilicate - Google Patents
Production method of potassium fluosilicate Download PDFInfo
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- CN103159218A CN103159218A CN2011104173256A CN201110417325A CN103159218A CN 103159218 A CN103159218 A CN 103159218A CN 2011104173256 A CN2011104173256 A CN 2011104173256A CN 201110417325 A CN201110417325 A CN 201110417325A CN 103159218 A CN103159218 A CN 103159218A
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- hydrofluoric acid
- production method
- crude product
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- potassium silicofluoride
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Abstract
The invention discloses a production method of potassium fluosilicate. The method comprises the steps of: (1) adding anhydrous hydrofluoric acid into water, and dissolving it under normal temperature and pressure to generate hydrofluoric acid with a mass fraction of 40% for standby use; (2) under normal temperature and pressure, adding silica and the hydrofluoric acid into a reaction kettle in proportion, letting them react under stirring to generate fluosilicic acid; (3) under the condition of stirring, adding a potassium chloride solution with a mass fraction of 20-40% into the fluosilicic acid solution obtained in step (2), and making them undergo a double decomposition reaction so as to generate a crude product; and (4) subjecting the crude product to precipitation, centrifugation, separation, washing, and drying treatments, thus obtaining the finished product potassium fluosilicate. The production method of potassium fluosilicate provided by the invention has the advantages of simple process, easily controllable conditions, and high productivity, thus being able to realize industrialized mass production.
Description
Technical field
The invention belongs to chemical field, relate in particular to a kind of production method of potassium silicofluoride.
Background technology
Potassium silicofluoride is mainly used in the smelting of wood preservation, ceramic manufacturing and aluminium and magnesium, the sterilant of agricultural, also is used for opticglass manufacturing, synthetic mica and enamel manufacturing etc.In prior art, the production method productive rate of potassium silicofluoride is lower, and enhancing productivity, it is necessary to become.
Summary of the invention
In order to overcome above-mentioned deficiency, technical problem to be solved is to provide the production method of the high potassium silicofluoride of a kind of productivity just in the present invention.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A kind of production method of potassium silicofluoride, it comprises the steps:
1, anhydrous hydrofluoric acid is added to the water, at normal temperatures and pressures, it is that 40% hydrofluoric acid is standby that dissolving generates massfraction;
2, at normal temperatures and pressures, silicon-dioxide and hydrofluoric acid are added stirring reaction generation silicofluoric acid in reactor in proportion;
3, under agitation condition, be that 20～40% Klorvess Liquid joins in silicate fluoride solution in step 2 with massfraction, carry out replacement(metathesis)reaction, generate crude product;
4, with crude product precipitation, centrifugal, separate washing, the drying treatment potassium silicofluoride that gets product.
The ratio of the amount of substance of the silicon-dioxide described in step 2 and hydrofluoric acid is preferably 1: 2.
Beneficial effect: the production method of potassium silicofluoride of the present invention, technique is simple, and condition is easy to control, and productivity is high, can realize large-scale industrialization production.
Figure of description
Accompanying drawing is the process flow sheet of the production method of potassium silicofluoride of the present invention.
Embodiment
A kind of production method of potassium silicofluoride, it comprises the steps:
1, the 40kg anhydrous hydrofluoric acid is added in 100kg water, at normal temperatures and pressures, it is that 40% hydrofluoric acid is standby that dissolving generates the 140kg massfraction;
2, at normal temperatures and pressures, 15.6kg silicon-dioxide and 6kg hydrofluoric acid are added stirring reaction generation 43.2kg silicofluoric acid in reactive tank;
3, get in step 1 40% standby hydrofluoric acid of 100kg and add in step 2 in reactive tank and the sodium metaaluminate reaction, generate crude product;
4, with crude product precipitation, centrifugal, separate, washing, the drying treatment 106kg that gets product, yield is 90%.
Claims (2)
1. the production method of a potassium silicofluoride, is characterized in that it comprises the steps:
(1) anhydrous hydrofluoric acid is added to the water, at normal temperatures and pressures, it is that 40% hydrofluoric acid is standby that dissolving generates massfraction;
(2) at normal temperatures and pressures, silicon-dioxide and hydrofluoric acid are added stirring reaction generation silicofluoric acid in reactor in proportion;
(3) under agitation condition, be that 20～40% Klorvess Liquid joins in silicate fluoride solution in step (2) with massfraction, carry out replacement(metathesis)reaction, generate crude product;
(4) with crude product precipitation, centrifugal, separate washing, the drying treatment potassium silicofluoride that gets product.
2. the production method of potassium silicofluoride according to claim 1, it is characterized in that: the ratio of the amount of substance of the silicon-dioxide described in step (2) and hydrofluoric acid is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104173256A CN103159218A (en) | 2011-12-14 | 2011-12-14 | Production method of potassium fluosilicate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104173256A CN103159218A (en) | 2011-12-14 | 2011-12-14 | Production method of potassium fluosilicate |
Publications (1)
| Publication Number | Publication Date |
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| CN103159218A true CN103159218A (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104173256A Pending CN103159218A (en) | 2011-12-14 | 2011-12-14 | Production method of potassium fluosilicate |
Country Status (1)
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| CN (1) | CN103159218A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449370A (en) * | 2013-08-28 | 2013-12-18 | 云南煤业能源股份有限公司 | Method for removing silicon dioxide in hydrofluoric acid reagent |
| CN104849267A (en) * | 2015-05-11 | 2015-08-19 | 梧州市产品质量检验所 | Method for determining content of silicon in fluosilicic acid volumetric method |
| CN111732104A (en) * | 2020-07-07 | 2020-10-02 | 锦洋高新材料股份有限公司 | Method for preparing potassium fluosilicate from fluorine-containing wastewater |
| CN114180600A (en) * | 2022-01-04 | 2022-03-15 | 江苏中旗科技股份有限公司 | Separation method of ternary or quaternary mixed potassium salt |
| CN115385341A (en) * | 2022-09-27 | 2022-11-25 | 江西拓泓新材料有限公司 | Method for preparing potassium fluosilicate by recovering acid wastewater from tantalum-niobium hydrometallurgy |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134580A (en) * | 2006-09-01 | 2008-03-05 | 多氟多化工股份有限公司 | Method for producing potassium fluoride |
-
2011
- 2011-12-14 CN CN2011104173256A patent/CN103159218A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134580A (en) * | 2006-09-01 | 2008-03-05 | 多氟多化工股份有限公司 | Method for producing potassium fluoride |
Non-Patent Citations (1)
| Title |
|---|
| 龚海涛等: "氟硅酸（H2SiF6）的制备和应用", 《化工文摘》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449370A (en) * | 2013-08-28 | 2013-12-18 | 云南煤业能源股份有限公司 | Method for removing silicon dioxide in hydrofluoric acid reagent |
| CN104849267A (en) * | 2015-05-11 | 2015-08-19 | 梧州市产品质量检验所 | Method for determining content of silicon in fluosilicic acid volumetric method |
| CN111732104A (en) * | 2020-07-07 | 2020-10-02 | 锦洋高新材料股份有限公司 | Method for preparing potassium fluosilicate from fluorine-containing wastewater |
| CN114180600A (en) * | 2022-01-04 | 2022-03-15 | 江苏中旗科技股份有限公司 | Separation method of ternary or quaternary mixed potassium salt |
| CN115385341A (en) * | 2022-09-27 | 2022-11-25 | 江西拓泓新材料有限公司 | Method for preparing potassium fluosilicate by recovering acid wastewater from tantalum-niobium hydrometallurgy |
| CN115385341B (en) * | 2022-09-27 | 2024-04-16 | 江西拓泓新材料有限公司 | Method for preparing potassium fluosilicate by recycling acid wastewater generated in tantalum-niobium wet smelting |
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Application publication date: 20130619 |