JPS5632320A - Recovering method for potassium silicofluoride from wet process phosphoric acid solution - Google Patents
Recovering method for potassium silicofluoride from wet process phosphoric acid solutionInfo
- Publication number
- JPS5632320A JPS5632320A JP10598479A JP10598479A JPS5632320A JP S5632320 A JPS5632320 A JP S5632320A JP 10598479 A JP10598479 A JP 10598479A JP 10598479 A JP10598479 A JP 10598479A JP S5632320 A JPS5632320 A JP S5632320A
- Authority
- JP
- Japan
- Prior art keywords
- potassium
- phosphoric acid
- defluorinating
- reagent
- silicofluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
PURPOSE: To economically recover high grade potassium silicofluoride of large particle size by adding an adequate amount of a potassium compound to a potassium silicofluoride-contg. phosphoric acid suspension formed in a defluorinating process and using the resulting aqueous soln. of acidic potassium phosphate as a defluorinating reagent in the above-mentioned process.
CONSTITUTION: A defluorinating reagent is added to a clarified wet process phosphoric acid soln. to precipitate a contained fluorine compound as potassium silicofluoride, which is then separated and recovered. In this defluorinating process a potassium compound such as caustic potash or potassium carbonate is added to the resulting potassium silicofluoride-contg. phosphoric acid suspension to such a degree that dissolved impurities are not precipitated, and the prepared aqueous soln. of acidic potassium phosphate adjusted to ≤ about 1.5pH is used as the above-mentioned reagent. The amount of the reagent used is preferably about 10W40% to the amount of the phosphoric acid soln. By this method high-grade potassium silicofluoride of about 20W40μm particle size and ≥ about 99.5% purity can be recovered.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10598479A JPS5632320A (en) | 1979-08-22 | 1979-08-22 | Recovering method for potassium silicofluoride from wet process phosphoric acid solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10598479A JPS5632320A (en) | 1979-08-22 | 1979-08-22 | Recovering method for potassium silicofluoride from wet process phosphoric acid solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5632320A true JPS5632320A (en) | 1981-04-01 |
Family
ID=14421998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10598479A Pending JPS5632320A (en) | 1979-08-22 | 1979-08-22 | Recovering method for potassium silicofluoride from wet process phosphoric acid solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5632320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219506A (en) * | 2016-07-26 | 2016-12-14 | 川恒生态科技有限公司 | A kind of phosphoric acid by wet process and the method for KCl production acid phosphate potassium dihydrogen |
| CN112608762A (en) * | 2020-12-18 | 2021-04-06 | 西安元创化工科技股份有限公司 | Liquid-phase defluorinating agent and preparation method and application thereof |
-
1979
- 1979-08-22 JP JP10598479A patent/JPS5632320A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219506A (en) * | 2016-07-26 | 2016-12-14 | 川恒生态科技有限公司 | A kind of phosphoric acid by wet process and the method for KCl production acid phosphate potassium dihydrogen |
| CN112608762A (en) * | 2020-12-18 | 2021-04-06 | 西安元创化工科技股份有限公司 | Liquid-phase defluorinating agent and preparation method and application thereof |
| CN112608762B (en) * | 2020-12-18 | 2022-05-03 | 西安元创化工科技股份有限公司 | Liquid-phase defluorinating agent and preparation method and application thereof |
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