JPS5742534A - Treatment of smelting slag containing alkali metal compound - Google Patents
Treatment of smelting slag containing alkali metal compoundInfo
- Publication number
- JPS5742534A JPS5742534A JP11868580A JP11868580A JPS5742534A JP S5742534 A JPS5742534 A JP S5742534A JP 11868580 A JP11868580 A JP 11868580A JP 11868580 A JP11868580 A JP 11868580A JP S5742534 A JPS5742534 A JP S5742534A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- ratio
- lime
- amount
- alkali metal
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
PURPOSE: In extracting an alkali metal from slag, to recover sodium carbonate practically reusable even in continuous operation, by adding lime or slaked lime to an extraction tank and specifying a residue ratio of impurities.
CONSTITUTION: Lime or slaked lime 11 is added to the extraction tank 1 and the carbon dioxide gas 12 is introduced into it to adjust the pH of the solution. The impurities P and S which are eluted together with N are insolubilized as shown by the formulas I and II, and the amount of SiO2 is suppressed to a practically acceptable range. The remaining ratio of the impure ingredients in the extracted solution is made ≤0.5. Namely, the extracted slurry 13 is passed through the thickener 3, separated from the insoluble residue 14 by the filter 4, crystallized by the tank 5, and separated from sodium bicarbonate 15 by the filter 7. The circulated solutions 8 and 9 are fed to the tank 1 during a cycle of the operation. When an elution ratio of the impure ingredients to their amount in the slag is a, and a remaining ratio of the impure ingredients to the elution amount after removal treatment is r, a relationship shown by the formula III is obtained, and r is made ≤0.5.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11868580A JPS5742534A (en) | 1980-08-28 | 1980-08-28 | Treatment of smelting slag containing alkali metal compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11868580A JPS5742534A (en) | 1980-08-28 | 1980-08-28 | Treatment of smelting slag containing alkali metal compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5742534A true JPS5742534A (en) | 1982-03-10 |
Family
ID=14742652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11868580A Pending JPS5742534A (en) | 1980-08-28 | 1980-08-28 | Treatment of smelting slag containing alkali metal compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5742534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57137440A (en) * | 1981-02-18 | 1982-08-25 | Nippon Kokan Kk <Nkk> | Treatment of refining slag containing alkali metallic compound |
-
1980
- 1980-08-28 JP JP11868580A patent/JPS5742534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57137440A (en) * | 1981-02-18 | 1982-08-25 | Nippon Kokan Kk <Nkk> | Treatment of refining slag containing alkali metallic compound |
| JPS6157898B2 (en) * | 1981-02-18 | 1986-12-09 | Nippon Kokan Kk |
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