JPS5641815A - Purifying method for wet process phosphoric acid solution - Google Patents
Purifying method for wet process phosphoric acid solutionInfo
- Publication number
- JPS5641815A JPS5641815A JP11610479A JP11610479A JPS5641815A JP S5641815 A JPS5641815 A JP S5641815A JP 11610479 A JP11610479 A JP 11610479A JP 11610479 A JP11610479 A JP 11610479A JP S5641815 A JPS5641815 A JP S5641815A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- wet process
- phosphoric acid
- sulfuric acid
- phosphate ore
- 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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To reduce sulfuric acid radicals in a phosphoric acid soln. manufactured by a wet process and to efficiently purify the soln. by adding phosphate ore to the soln. so that the molar ratio of CaO to SO3 in the soln. is adjusted to equivalent or more, forming gypsum.
CONSTITUTION: Sulfuric acid radicals dissolved in a wet process phosphoric acid soln. manufactured especially by a dihydration method or a dihydration-hemihydration method are treated with phosphate ore, forming gypsum, which is then separated. In this method phosphate ore is added under the conditions of <35% P2O5 concn. and ≤60°C reaction temp. so that the CaO/SO3 molar ratio is adjusted to ≥1, and the ore-added soln. is allowed to stand after agitation. Thus, gypsum formed is grown to about 20W80μ coarse particles and separated as crystals easy to separate, thereby easily reducing the sulfuric acid radicals.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11610479A JPS5641815A (en) | 1979-09-12 | 1979-09-12 | Purifying method for wet process phosphoric acid solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11610479A JPS5641815A (en) | 1979-09-12 | 1979-09-12 | Purifying method for wet process phosphoric acid solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5641815A true JPS5641815A (en) | 1981-04-18 |
Family
ID=14678790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11610479A Pending JPS5641815A (en) | 1979-09-12 | 1979-09-12 | Purifying method for wet process phosphoric acid solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5641815A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63227930A (en) * | 1987-02-13 | 1988-09-22 | ゼネラル・エレクトリック・カンパニイ | Gas turbine |
| CN107827114A (en) * | 2017-12-01 | 2018-03-23 | 中化化肥有限公司成都研发中心 | The method of phosphorus co-production dihydrate gypsum and prodan in recovery wet-process phosphoric acid concentration slag acid |
-
1979
- 1979-09-12 JP JP11610479A patent/JPS5641815A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63227930A (en) * | 1987-02-13 | 1988-09-22 | ゼネラル・エレクトリック・カンパニイ | Gas turbine |
| CN107827114A (en) * | 2017-12-01 | 2018-03-23 | 中化化肥有限公司成都研发中心 | The method of phosphorus co-production dihydrate gypsum and prodan in recovery wet-process phosphoric acid concentration slag acid |
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