JPS5467597A - Preparation of high-purity phosphate free of cd and as - Google Patents
Preparation of high-purity phosphate free of cd and asInfo
- Publication number
- JPS5467597A JPS5467597A JP13516577A JP13516577A JPS5467597A JP S5467597 A JPS5467597 A JP S5467597A JP 13516577 A JP13516577 A JP 13516577A JP 13516577 A JP13516577 A JP 13516577A JP S5467597 A JPS5467597 A JP S5467597A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- phosphate
- treated
- phosphoric acid
- added
- 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
- 229910019142 PO4 Inorganic materials 0.000 title abstract 5
- 239000010452 phosphate Substances 0.000 title abstract 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 5
- 239000007864 aqueous solution Substances 0.000 abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000000706 filtrate Substances 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Abstract
PURPOSE: To produce high-purity phosphate at good yield in a simple process an aqueous solution of crude alkaline primary- or secondary-phosphate is treated by alkali sulfide or H2S, then dissolved H2S is removed, and after activated-carbon treatment, a specified alcohol or aceton is added to a filtrate to separate out phosphate.
CONSTITUTION: An aqueous solution of alkaline- or ammounium-salt of primary- or secondary-phosphoric acid which is obtained by neutralizing crude phosphoric acid such as wet phosphoric acid is treated by alkali sulfide or H2S, whereby sulfide is added in an amount of 5 to 500 times in molar ratio as much as As present in the aqueous solution. Most part of Cd is present in dissolved state in the aqueous solution. Next, H2S-removed solution is treated by active carbon and filtered. To the filtrate, monohydric alcohol having one to three carbon atoms or aceton is added to separate out high-purity phosphate free of As, Cd.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516577A JPS5467597A (en) | 1977-11-10 | 1977-11-10 | Preparation of high-purity phosphate free of cd and as |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516577A JPS5467597A (en) | 1977-11-10 | 1977-11-10 | Preparation of high-purity phosphate free of cd and as |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5467597A true JPS5467597A (en) | 1979-05-31 |
Family
ID=15145337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13516577A Pending JPS5467597A (en) | 1977-11-10 | 1977-11-10 | Preparation of high-purity phosphate free of cd and as |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5467597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629644A (en) * | 2017-01-14 | 2017-05-10 | 湖南省正源储能材料与器件研究所 | Method for producing industrial first-stage and battery-stage monoammonium phosphate by using fertilizer-stage monoammonium phosphate |
-
1977
- 1977-11-10 JP JP13516577A patent/JPS5467597A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629644A (en) * | 2017-01-14 | 2017-05-10 | 湖南省正源储能材料与器件研究所 | Method for producing industrial first-stage and battery-stage monoammonium phosphate by using fertilizer-stage monoammonium phosphate |
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