HIGH EFFICIENCY CONVERTER STEELMAKING METHOD AND MOLTEN TREATING FURNACE USING HIGH CU AND SN-CONTAINING SCRAP AS RAW MATERIAL

Title:

HIGH EFFICIENCY CONVERTER STEELMAKING METHOD AND MOLTEN TREATING FURNACE USING HIGH CU AND SN-CONTAINING SCRAP AS RAW MATERIAL

Document Type and Number:

Japanese Patent JPH02217410

Kind Code:

A

Abstract:

PURPOSE: To remove Cu and Sn in scrap and to efficiently execute preheating of the scrap by dipping the scrap into Na2S-FeS mixed material molten treating furnace, which is held to the prescribed temp. by using converter by-product gas.

CONSTITUTION: The Co-containing by-product gas generated at the time of refining in the converter, is used to obtain the molten Na2S-FeS mixed material. The high Cu and Sn-containing scrap is dipped into the Na2S-FeS mixed material molten treating furnace held to 600-1000°C. By this method, Cu and Sn in the scrap are removed. Then, the scrap under preheating condition together with the above scrap is charged into the converter and refined.

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Inventors:

OKUNO YOSHIO
MAEDE HIROFUMI
KAWACHI YUJI

Application Number:

JP3957589A

Publication Date:

August 30, 1990

Filing Date:

February 20, 1989

Export Citation:

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Assignee:

NIPPON STEEL CORP

International Classes:

C21C5/28; C21C5/38; C21C5/44; (IPC1-7): C21C5/28; C21C5/38; C21C5/44

Attorney, Agent or Firm:

Seiichi Kosara

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