JPS57149814A - Recovering method for phosphoric acid - Google Patents
Recovering method for phosphoric acidInfo
- Publication number
- JPS57149814A JPS57149814A JP3427181A JP3427181A JPS57149814A JP S57149814 A JPS57149814 A JP S57149814A JP 3427181 A JP3427181 A JP 3427181A JP 3427181 A JP3427181 A JP 3427181A JP S57149814 A JPS57149814 A JP S57149814A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- alumina
- phosphoric acid
- adsorbed
- ammonia
- 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
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To economically recover phosphoric acid from an aqueous soln. contg. phosphate ions by adding γ-alumina to the soln. to allow the ions to be adsorbed and treating the alumina with an aqueous ammonia soln. to desorb phosphoric acid.
CONSTITUTION: To a waste aqueous soln. contg. phosphoric acid, sulfuric acid, nitric acid and Al after the chemical polishing of Al is added γ-alumina, and they are charged into an adsorption vessel to allow phopshate ions to be adsorbed. Solid-liq. separation is carried out with an adsorbed alumina separator, and the phosphate ion adsorbed γ-alumina is fed to a regeneration vessel, where ammonia is added to desorb the adsorbed phosphoric acid. The γ-alumina is then separated from the soln. with a desorbed alumina separator and returned to the adsorption vessel. The separated soln. is fed to a crystal vessel and converted into a satd. aqueous soln. contg. ammonium dihydrogen-phosphate by cooling, and ammonium phosphate crystals are deposited and separated with a crystal separator. The satd. soln. is fed to the regeneration vessel after adding ammonia, and the crystals are decomposed into ammonia and solid phosphoric acid by thermal decomposition with a decomposer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3427181A JPS57149814A (en) | 1981-03-09 | 1981-03-09 | Recovering method for phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3427181A JPS57149814A (en) | 1981-03-09 | 1981-03-09 | Recovering method for phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57149814A true JPS57149814A (en) | 1982-09-16 |
Family
ID=12409490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3427181A Pending JPS57149814A (en) | 1981-03-09 | 1981-03-09 | Recovering method for phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57149814A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4865877A (en) * | 1986-11-08 | 1989-09-12 | Matsushita Electric Works, Ltd. | Method for roughening ceramic substrate surface and method for manufacturing printed circuit board using surface-roughened ceramic substrate |
| CN108358182A (en) * | 2017-04-19 | 2018-08-03 | 江西黄岩香料有限公司 | The method that vertofix coeur, cedrol methyl ether production waste water prepare ammonium dihydrogen phosphate |
-
1981
- 1981-03-09 JP JP3427181A patent/JPS57149814A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4865877A (en) * | 1986-11-08 | 1989-09-12 | Matsushita Electric Works, Ltd. | Method for roughening ceramic substrate surface and method for manufacturing printed circuit board using surface-roughened ceramic substrate |
| CN108358182A (en) * | 2017-04-19 | 2018-08-03 | 江西黄岩香料有限公司 | The method that vertofix coeur, cedrol methyl ether production waste water prepare ammonium dihydrogen phosphate |
| CN108358182B (en) * | 2017-04-19 | 2021-05-25 | 江西黄岩香料有限公司 | Method for preparing ammonium dihydrogen phosphate from wastewater generated in production of methyl cedryl ketone and methyl cedryl ether |
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