JPS5637209A - Continuous manufacture of phosphoric acid from unpulverized phosphate ore - Google Patents
Continuous manufacture of phosphoric acid from unpulverized phosphate oreInfo
- Publication number
- JPS5637209A JPS5637209A JP11379179A JP11379179A JPS5637209A JP S5637209 A JPS5637209 A JP S5637209A JP 11379179 A JP11379179 A JP 11379179A JP 11379179 A JP11379179 A JP 11379179A JP S5637209 A JPS5637209 A JP S5637209A
- Authority
- JP
- Japan
- Prior art keywords
- unpulverized
- gypsum
- sulfuric acid
- phosphoric 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 attain a high phosphoric acid yield with unpulverized phosphate ore and reduce the coat of equipment by reacting an excess sulfuric acid soln. contg. calcium ions and unpulverized phosphate ore to control the crystallization of calcium phosphate in gypsum.
CONSTITUTION: In the 1st process unpulverized phosphate ore is almost thoroughly dissolved in an acid soln. and a slurry recycled from the 4th process to generate Ga2+ ions. In the 2nd process the whole quantity of sulfuric acid required for this manufacturing process is supplied, and gypsum is formed in the presence of excess sulfuric acid to prevent the simultaneous crystallization of calcium phosphate and calcium sulfate. In the 3d process excess sulfuric acid in the liq. reaction product of the 2nd process is removed with Ca2+ ions in the soln. from the 1st process to form gypsum, preparing a slurry of about 1W2% excess sulfuric acid concn. In the 4th process part of the slurry is recycled to the 1st process, and the remainder is separated into phosphoric acid and gypsum by filtration. The washing filtrate of the gypsum is recycled to the 1st process as the acid soln. optionally after adjusting by adding part of the product phosphoric acid.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11379179A JPS5637209A (en) | 1979-09-05 | 1979-09-05 | Continuous manufacture of phosphoric acid from unpulverized phosphate ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11379179A JPS5637209A (en) | 1979-09-05 | 1979-09-05 | Continuous manufacture of phosphoric acid from unpulverized phosphate ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5637209A true JPS5637209A (en) | 1981-04-10 |
Family
ID=14621171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11379179A Pending JPS5637209A (en) | 1979-09-05 | 1979-09-05 | Continuous manufacture of phosphoric acid from unpulverized phosphate ore |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5637209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58121210A (en) * | 1971-08-24 | 1983-07-19 | バイエル・アクチエンゲゼルシヤフト | Manufacture of instantaneous mouth discharging sublingual soft capsule medicine |
| CN107840316A (en) * | 2017-10-30 | 2018-03-27 | 安徽六国化工股份有限公司 | A kind of two step method dihydrate wet phosphoric acid production technology |
-
1979
- 1979-09-05 JP JP11379179A patent/JPS5637209A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58121210A (en) * | 1971-08-24 | 1983-07-19 | バイエル・アクチエンゲゼルシヤフト | Manufacture of instantaneous mouth discharging sublingual soft capsule medicine |
| JPS6119604B2 (en) * | 1971-08-24 | 1986-05-17 | Bayer Ag | |
| CN107840316A (en) * | 2017-10-30 | 2018-03-27 | 安徽六国化工股份有限公司 | A kind of two step method dihydrate wet phosphoric acid production technology |
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