JPS5635712A - Operating method of converter - Google Patents

Operating method of converter

Info

Publication number
JPS5635712A
JPS5635712A JP10981679A JP10981679A JPS5635712A JP S5635712 A JPS5635712 A JP S5635712A JP 10981679 A JP10981679 A JP 10981679A JP 10981679 A JP10981679 A JP 10981679A JP S5635712 A JPS5635712 A JP S5635712A
Authority
JP
Japan
Prior art keywords
sio
slag
quicklime
cao
weight ratio
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
JP10981679A
Other languages
Japanese (ja)
Inventor
Fumio Matsuno
Shunichi Nishikida
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
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP10981679A priority Critical patent/JPS5635712A/en
Publication of JPS5635712A publication Critical patent/JPS5635712A/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

Abstract

PURPOSE: To improve desulfurization efficiency and decrease component variances of slag by adding quicklime or SiO2 base additives from the middle period up to the end period of blowing thereby controlling the final slag composition in such a manner that the weight ratio of CaO and SiO2 therein is within the specific range.
CONSTITUTION: If quicklime of 2W3 times the amount of the SiO2 calculated from the Si amount in pig iron is charged in converter steel making, the optimum slag components are obtained. In actuality, however, the slag components vary and therefore the slag is sampled and analyzed after the middle period of blowing when the quicklime charged in an early period slags almost. When the weight ratio of CaO and SiO2 of the analyzed value is smaller than 2, quicklime is added and when it is larger than 3, SiO2 base additives such as silica sand and silica brick scraps are added to control the final slag composition in such a manner that the weight ratio of CaO and SiO2 is kept within a 2W3 range.
COPYRIGHT: (C)1981,JPO&Japio
JP10981679A 1979-08-29 1979-08-29 Operating method of converter Pending JPS5635712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10981679A JPS5635712A (en) 1979-08-29 1979-08-29 Operating method of converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10981679A JPS5635712A (en) 1979-08-29 1979-08-29 Operating method of converter

Publications (1)

Publication Number Publication Date
JPS5635712A true JPS5635712A (en) 1981-04-08

Family

ID=14519928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10981679A Pending JPS5635712A (en) 1979-08-29 1979-08-29 Operating method of converter

Country Status (1)

Country Link
JP (1) JPS5635712A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147082A (en) * 1983-02-10 1984-08-23 Sumitomo Metal Ind Ltd Coal liquefaction
CN110373511A (en) * 2019-07-17 2019-10-25 邯郸钢铁集团有限责任公司 A kind of converter smelting process of low lime consumption

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147082A (en) * 1983-02-10 1984-08-23 Sumitomo Metal Ind Ltd Coal liquefaction
CN110373511A (en) * 2019-07-17 2019-10-25 邯郸钢铁集团有限责任公司 A kind of converter smelting process of low lime consumption

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