JPS54100999A - Treatment of waste slag - Google Patents

Treatment of waste slag

Info

Publication number
JPS54100999A
JPS54100999A JP770778A JP770778A JPS54100999A JP S54100999 A JPS54100999 A JP S54100999A JP 770778 A JP770778 A JP 770778A JP 770778 A JP770778 A JP 770778A JP S54100999 A JPS54100999 A JP S54100999A
Authority
JP
Japan
Prior art keywords
sent
iron
mixed
waste slag
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
Application number
JP770778A
Other languages
Japanese (ja)
Other versions
JPS6127326B2 (en
Inventor
Kazunari Yamada
Masahisa Iba
Yujo Marukawa
Setsuo Okamoto
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.)
Nippon Steel Corp
Tokuyama Corp
Original Assignee
Sumitomo Metal Industries Ltd
Tokuyama Corp
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 Sumitomo Metal Industries Ltd, Tokuyama Corp filed Critical Sumitomo Metal Industries Ltd
Priority to JP770778A priority Critical patent/JPS54100999A/en
Priority to SE7900474A priority patent/SE426711B/en
Priority to US06/006,293 priority patent/US4225565A/en
Priority to GB7902693A priority patent/GB2013640B/en
Priority to NL7900583A priority patent/NL7900583A/en
Priority to IT1963579A priority patent/IT1166595B/en
Priority to FR7902090A priority patent/FR2415612A1/en
Priority to BE0/193100A priority patent/BE873737A/en
Priority to DE19792902914 priority patent/DE2902914A1/en
Priority to LU80831A priority patent/LU80831A1/en
Publication of JPS54100999A publication Critical patent/JPS54100999A/en
Publication of JPS6127326B2 publication Critical patent/JPS6127326B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE: To recover high purity alkali carbonate which is reusable from filtrate by the procedure in which waste slag produced when molten pig iron is desulfurized or dephosphorated by an alkali carbonate is extracted with hot water while blowing CO2 into the apparatus, and then the extracted solution is mixed with iron ion and sediment is filtered.
CONSTITUTION: The molten pig iron obtained at the blast furnace 1 is sent to the desulfurization and dephosphoration process 2 to cause reaction with Na2CO3 added in a fixed amount, whereby S is converted into Na2S and P is converted into sodium phosphate. And, the pig iron thus treated is sent to the converter 6 and mixed with CaO, etc. for refining, and then sent to the casting process 7. On the other hand, the waste slag formed in the process 2 is sent to the extraction and washing process 3, where extraction and washing are made with hot water while injecting CO2-containing gas to crystallize most of S ion in the form of iron sulfide. And, the extracted solution is sent to the sedimentation tank 4 and mixed with iron ion to precipitate iron sulfide and iron phosphate and removed them. Then, the filtrate is concentrated and then sent to the fractional crystallization process 5 to separate NaCO3 sediment for removal and recovery.
COPYRIGHT: (C)1979,JPO&Japio
JP770778A 1978-01-26 1978-01-26 Treatment of waste slag Granted JPS54100999A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP770778A JPS54100999A (en) 1978-01-26 1978-01-26 Treatment of waste slag
SE7900474A SE426711B (en) 1978-01-26 1979-01-18 PROCEDURE FOR TREATMENT OF WASTE TYPE FOR RECYCLING OF ALKALICAR BONATES
US06/006,293 US4225565A (en) 1978-01-26 1979-01-25 Process for treating waste slags
GB7902693A GB2013640B (en) 1978-01-26 1979-01-25 Slag treatment process
NL7900583A NL7900583A (en) 1978-01-26 1979-01-25 METHOD OF TREATING WASTE.
IT1963579A IT1166595B (en) 1978-01-26 1979-01-26 PROCEDURE TO TREAT SLOTS
FR7902090A FR2415612A1 (en) 1978-01-26 1979-01-26 RESIDUAL SLAG TREATMENT PROCESS
BE0/193100A BE873737A (en) 1978-01-26 1979-01-26 RESIDUAL SLAG TREATMENT PROCESS
DE19792902914 DE2902914A1 (en) 1978-01-26 1979-01-26 METHOD OF TREATING SLAG
LU80831A LU80831A1 (en) 1978-01-26 1979-01-26 PROCESS FOR TREATING RESIDUAL SLAG

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP770778A JPS54100999A (en) 1978-01-26 1978-01-26 Treatment of waste slag

Publications (2)

Publication Number Publication Date
JPS54100999A true JPS54100999A (en) 1979-08-09
JPS6127326B2 JPS6127326B2 (en) 1986-06-25

Family

ID=11673206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP770778A Granted JPS54100999A (en) 1978-01-26 1978-01-26 Treatment of waste slag

Country Status (3)

Country Link
JP (1) JPS54100999A (en)
BE (1) BE873737A (en)
LU (1) LU80831A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742531A (en) * 1980-08-28 1982-03-10 Nippon Kokan Kk <Nkk> Treatment of smelting slag containing alkali metal compound
JPS5742532A (en) * 1980-08-28 1982-03-10 Nippon Kokan Kk <Nkk> Treatment of smelting slag containing alkali metal compound

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114645108B (en) * 2022-03-28 2023-05-16 广东韶钢松山股份有限公司 Method for treating residual iron

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742531A (en) * 1980-08-28 1982-03-10 Nippon Kokan Kk <Nkk> Treatment of smelting slag containing alkali metal compound
JPS5742532A (en) * 1980-08-28 1982-03-10 Nippon Kokan Kk <Nkk> Treatment of smelting slag containing alkali metal compound
JPS6235967B2 (en) * 1980-08-28 1987-08-05 Nippon Kokan Kk

Also Published As

Publication number Publication date
JPS6127326B2 (en) 1986-06-25
LU80831A1 (en) 1980-02-14
BE873737A (en) 1979-07-26

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