JPS5575910A - Removing method for fluorine in phosphoric acid - Google Patents
Removing method for fluorine in phosphoric acidInfo
- Publication number
- JPS5575910A JPS5575910A JP14718678A JP14718678A JPS5575910A JP S5575910 A JPS5575910 A JP S5575910A JP 14718678 A JP14718678 A JP 14718678A JP 14718678 A JP14718678 A JP 14718678A JP S5575910 A JPS5575910 A JP S5575910A
- Authority
- JP
- Japan
- Prior art keywords
- methyl isobutyl
- isobutyl ketone
- phosphoric acid
- fluorine
- ion
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
PURPOSE: To remove fluorine ion in phosphoric acid efficiently and cheaply with no loss of the acid by adjusting the concn. of fluorine ion-contg. phosphoric acid; extracting the ion with methyl isobutyl ketone; and separating the methyl isobutyl ketone phase.
CONSTITUTION: Fluorine ion-contg. crude phosphoric acid is extracted with methyl isobutyl ketone and washed with water to remove cations. The concn. of the phosphoric acid thus primarily refined is adjusted to 40wt% or less as P2O5. Methyl isobutyl ketone is added to the acid again, well mixed, and allowed to stand to separate the mixt. into methyl isobutyl ketone phase and aq. phase. By separating the methyl isobutyl ketone phase contg. the fluorine ion shifted, the ion in the acid is removed. The methyl isobutyl ketone used is contacted to a calcium cpd. such as slaked lime to remove the fluorine, followed by recycling.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14718678A JPS5852923B2 (en) | 1978-11-30 | 1978-11-30 | Method for removing fluoridation in phosphoric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14718678A JPS5852923B2 (en) | 1978-11-30 | 1978-11-30 | Method for removing fluoridation in phosphoric acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5575910A true JPS5575910A (en) | 1980-06-07 |
JPS5852923B2 JPS5852923B2 (en) | 1983-11-26 |
Family
ID=15424503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14718678A Expired JPS5852923B2 (en) | 1978-11-30 | 1978-11-30 | Method for removing fluoridation in phosphoric acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852923B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0437394Y2 (en) * | 1984-12-21 | 1992-09-02 |
-
1978
- 1978-11-30 JP JP14718678A patent/JPS5852923B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5852923B2 (en) | 1983-11-26 |
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