JPS5756085A - Treatment for waste liquid containing iron chloride - Google Patents
Treatment for waste liquid containing iron chlorideInfo
- Publication number
- JPS5756085A JPS5756085A JP8850680A JP8850680A JPS5756085A JP S5756085 A JPS5756085 A JP S5756085A JP 8850680 A JP8850680 A JP 8850680A JP 8850680 A JP8850680 A JP 8850680A JP S5756085 A JPS5756085 A JP S5756085A
- Authority
- JP
- Japan
- Prior art keywords
- cacl
- waste liquid
- solution
- liquid containing
- iron chloride
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To recover iron and chlorine from waste liquid containing iron chloride with simple operation by preparing CaCl2 through using the waste liquid containing iron chloride as chlorine source and using CaCO3 as Ca source, and recovering iron in the waste liquid as Fe(OH)3.
CONSTITUTION: CaCO3 and/or Ca(OH)2 is added to waste liquid containing FeCl2 and FeCl3, the waste liquid is diluted with CaCl2 solution, and iron is recovered as hydroxide. A part of the filtrate is circulated as diluting solution, and remaining part is recovered as CaCl2 solution, crystallized CaCl2 or anhydrous CaCl. Otherwise, Ca(OH)2 is added to CaCl2 solution to crystallize a basic salt, the solution is filtered to recover basic CaCl2. At the same time, the mother liquor is circulated as diluting solution, or basic CaCl2 is dehydrated by heating to recover as a double salt of CaCl2 and CaO.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8850680A JPS5756085A (en) | 1980-07-01 | 1980-07-01 | Treatment for waste liquid containing iron chloride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8850680A JPS5756085A (en) | 1980-07-01 | 1980-07-01 | Treatment for waste liquid containing iron chloride |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5756085A true JPS5756085A (en) | 1982-04-03 |
Family
ID=13944703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8850680A Pending JPS5756085A (en) | 1980-07-01 | 1980-07-01 | Treatment for waste liquid containing iron chloride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756085A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112456533A (en) * | 2020-12-08 | 2021-03-09 | 山东理工大学 | Method for producing high-purity anhydrous calcium chloride by taking limestone as raw material |
-
1980
- 1980-07-01 JP JP8850680A patent/JPS5756085A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112456533A (en) * | 2020-12-08 | 2021-03-09 | 山东理工大学 | Method for producing high-purity anhydrous calcium chloride by taking limestone as raw material |
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