JPS5589409A - Treating method of waste slag - Google Patents

Treating method of waste slag

Info

Publication number
JPS5589409A
JPS5589409A JP16011778A JP16011778A JPS5589409A JP S5589409 A JPS5589409 A JP S5589409A JP 16011778 A JP16011778 A JP 16011778A JP 16011778 A JP16011778 A JP 16011778A JP S5589409 A JPS5589409 A JP S5589409A
Authority
JP
Japan
Prior art keywords
waste slag
carbon dioxide
extract solution
component
carbonate
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
JP16011778A
Other languages
Japanese (ja)
Other versions
JPS5711371B2 (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 JP16011778A priority Critical patent/JPS5589409A/en
Priority to SE7900474A priority patent/SE426711B/en
Priority to GB7902693A priority patent/GB2013640B/en
Priority to US06/006,293 priority patent/US4225565A/en
Priority to NL7900583A priority patent/NL7900583A/en
Priority to DE19792902914 priority patent/DE2902914A1/en
Priority to IT1963579A priority patent/IT1166595B/en
Priority to FR7902090A priority patent/FR2415612A1/en
Publication of JPS5589409A publication Critical patent/JPS5589409A/en
Publication of JPS5711371B2 publication Critical patent/JPS5711371B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To recover alkali metal carbonate by a simple process through a method wherein waste slag is treated by hot water while carbon dioxide is blown into waste slag obtained after molten iron is desulfurized and dephosphorized to prepare alkali metal carbonate extract solution. CONSTITUTION:While carbon dioxide is blown into waste slag generated by desulfurizing and dephosphorizing treatment of molten iron, hot water treatment is carried out at the same time and a blowing amount of carbon dioxide is regulated so as to adjust a pH of an extract solution within a range of 9.5-11.5. Thereby, an elluted amount of sulfur component within waste slag is controlled to a small amount as well as the ellution of silicate component is also controlled and unreacted alkali within waste slag is extracted as carbonate salt. The obtained extract solution contains sodium carbonate, phosphate and a small amount of sulfur component. From this extracted solution, sodium carbonate is recovered by a recovering and concentrating process or the like of sulfur and phosphorus component and is reused in a desulfurizing process or the like.
JP16011778A 1978-01-26 1978-12-27 Treating method of waste slag Granted JPS5589409A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP16011778A JPS5589409A (en) 1978-12-27 1978-12-27 Treating method of waste slag
SE7900474A SE426711B (en) 1978-01-26 1979-01-18 PROCEDURE FOR TREATMENT OF WASTE TYPE FOR RECYCLING OF ALKALICAR BONATES
GB7902693A GB2013640B (en) 1978-01-26 1979-01-25 Slag treatment process
US06/006,293 US4225565A (en) 1978-01-26 1979-01-25 Process for treating waste slags
NL7900583A NL7900583A (en) 1978-01-26 1979-01-25 METHOD OF TREATING WASTE.
DE19792902914 DE2902914A1 (en) 1978-01-26 1979-01-26 METHOD OF TREATING SLAG
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16011778A JPS5589409A (en) 1978-12-27 1978-12-27 Treating method of waste slag

Publications (2)

Publication Number Publication Date
JPS5589409A true JPS5589409A (en) 1980-07-07
JPS5711371B2 JPS5711371B2 (en) 1982-03-04

Family

ID=15708221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16011778A Granted JPS5589409A (en) 1978-01-26 1978-12-27 Treating method of waste slag

Country Status (1)

Country Link
JP (1) JPS5589409A (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

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

Also Published As

Publication number Publication date
JPS5711371B2 (en) 1982-03-04

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