JPS5788023A - 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 compound

Info

Publication number
JPS5788023A
JPS5788023A JP16465080A JP16465080A JPS5788023A JP S5788023 A JPS5788023 A JP S5788023A JP 16465080 A JP16465080 A JP 16465080A JP 16465080 A JP16465080 A JP 16465080A JP S5788023 A JPS5788023 A JP S5788023A
Authority
JP
Japan
Prior art keywords
soln
metallic compound
slag
vessel
extraction
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
Application number
JP16465080A
Other languages
Japanese (ja)
Inventor
Shin Yamashita
Kazuo Tajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP16465080A priority Critical patent/JPS5788023A/en
Publication of JPS5788023A publication Critical patent/JPS5788023A/en
Pending legal-status Critical Current

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 efficiently conduct the titled removal and to recover a high quality alkali metal by adding quick lime or the like to a soln. extracted from refining slag contg. an alkali metallic compound to make P, S and Si difficultly soluble and by filtering them off.
CONSTITUTION: Slag produced when molten iron is refined with an alkali metallic compound is crushed, and the crushed slag (a) is fed to an extraction vessel 1, where extraction is carried out with a satd. soln. of sodium hydrogencarbonat (b) and a refluxing soln. (c) which is part of a filtrate separated from a filter 3. At this time, a synthetic gas (d) contg. CO2, O2 and N2 is blown to adjust the pH. A slurry prepared by the extraction is fed from the vessel 1 to a vessel 4 for removing P, S and Si, quick lime or slaked lime is added as a removing agent (e), and a similar gas (d) is blown to adjust the pH. Thus, P, S and Si in the slag (a) are made difficultly or slightly soluble and filtered off which the filter 3 together with undissolved residue, and a high quality extracted soln. is recovered.
COPYRIGHT: (C)1982,JPO&Japio
JP16465080A 1980-11-25 1980-11-25 Removing method for phosphorus, sulfur and silicon in refining slag containing alkali metallic compound Pending JPS5788023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16465080A JPS5788023A (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
JP16465080A JPS5788023A (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
JPS5788023A true JPS5788023A (en) 1982-06-01

Family

ID=15797203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16465080A Pending JPS5788023A (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) JPS5788023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57137438A (en) * 1981-02-18 1982-08-25 Nippon Kokan Kk <Nkk> Treatment of refining slag containing alkali metallic compound
FR2543975A1 (en) * 1983-04-07 1984-10-12 Solvay Process for making it possible to discard a metallurgical slag containing oxidised sodium and phosphorus compounds on a dump or a slag heap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57137438A (en) * 1981-02-18 1982-08-25 Nippon Kokan Kk <Nkk> Treatment of refining slag containing alkali metallic compound
FR2543975A1 (en) * 1983-04-07 1984-10-12 Solvay Process for making it possible to discard a metallurgical slag containing oxidised sodium and phosphorus compounds on a dump or a slag heap

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