Patent · US Expired

Method for manufacturing reduced iron pellets

US6241803A · kind A · utility

37Cited by

1References

3Claims

0Family size

Assignee

Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) · JP

Inventor

Kojiro Fuji · Kakogawa, JP

Key dates

Filing date	Jan 19, 2000
Grant date	Jun 5, 2001
Priority date	—
Expiry date	Jan 19, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22B1/26
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for manufacturing reduced iron pellets comprises the steps of heating iron oxide pellets incorporating carbonaceous material to yield reduced iron pellets having an apparent density of not more than 4.0 g/cm.sup.3, cooling the hot reduced iron pellets by using water at an average cooling rate between 1,500.degree. C./min and 500.degree. C./min, when the surfaces of the reduced iron pellets are cooled from 650.degree. C. to 150.degree. C. The method described above does not require expensive facilities for processing briquettes and can manufacture the reduced iron pellets having high degree of metallization, superior crushing strength, and an apparent density of not more than 4.0 g/cm.sup.3.

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