JPS5788025A - Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compound - Google Patents
Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compoundInfo
- Publication number
- JPS5788025A JPS5788025A JP16465280A JP16465280A JPS5788025A JP S5788025 A JPS5788025 A JP S5788025A JP 16465280 A JP16465280 A JP 16465280A JP 16465280 A JP16465280 A JP 16465280A JP S5788025 A JPS5788025 A JP S5788025A
- Authority
- JP
- Japan
- Prior art keywords
- filtrate
- filter
- vessel
- metallic compound
- fed
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To recover a high-quality alkali metal in a simple extraction process by crystallizing and separating the alkali metal from a soln. extracted from refining slag contg. an alkali metallic compound and by adding quick lime or the like to the filtrate to make P, S and Si difficultly soluble.
CONSTITUTION: Slag (a) contg. an alkali metallic compound after refining molten iron is crushed to a prescribed grain size and fed to an extraction vessel 1. On the other hand, a filtrate separated from a filter 4c as a circulating soln. (b) for extraction and part of a filtrate from a filter 4a after separating undissolved residue as a refluxing soln. (c) are supplied to the vessel 1, and a synthetic gas (e) consisting of CO2, O2 and N2 is blown to adjust the pH. The remainder of the filtrate from the filter 4a is fed to a crystallization vessel 2, and by blowing a similar gas (e), the pH is adjusted to crystallize NaHCO3, which is then separated and recovered with a filter 4b. The filtrate is fed from the filter 4a to a vessel 3 for removing P, S and Si, and quick lime or slaked lime is added as a removing agent (d) to make P, S and si difficultly or slightly soluble. They are filtered off with the filter 4c, and the filtrate is supplied to the vessel 1.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16465280A JPS5788025A (en) | 1980-11-25 | 1980-11-25 | Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16465280A JPS5788025A (en) | 1980-11-25 | 1980-11-25 | Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5788025A true JPS5788025A (en) | 1982-06-01 |
Family
ID=15797241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16465280A Pending JPS5788025A (en) | 1980-11-25 | 1980-11-25 | Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5788025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57137437A (en) * | 1981-02-18 | 1982-08-25 | Nippon Kokan Kk <Nkk> | Treatment of refining slag containing alkali metallic compound |
-
1980
- 1980-11-25 JP JP16465280A patent/JPS5788025A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57137437A (en) * | 1981-02-18 | 1982-08-25 | Nippon Kokan Kk <Nkk> | Treatment of refining slag containing alkali metallic compound |
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