Patent · US Active

Cold start-up method for a direct smelting process

US7914601B2 · kind B2 · utility

28Cited by

6References

42Claims

0Family size

Assignee

TECHNOLOGICAL RESOURCES PTY LIMITED · AU

Inventors

Iain William Farr · Perth, AU
Rodney James Dry · Perth, AU

Key dates

Filing date	May 12, 2006
Grant date	Mar 29, 2011
Priority date	—
Expiry date	Dec 25, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/134
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of cold starting a molten bath-based direct smelting process for producing molten iron in a vessel (3) is disclosed. The method includes a step of preheating the vessel before supplying solid feed materials into the vessel. The method also includes a subsequent step of supplying an oxygen-containing gas and solid feed materials including material for forming slag, iron-containing feed material, and carbonaceous material into the vessel and generating heat and forming a bath of molten material that includes molten iron and molten slag in the vessel. This step includes supplying feed materials to promote formation of molten slag over molten iron in an early stage of developing the molten bath.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.