Processing of steel making slags

US7810746B2 · kind B2 · utility

Assignee

• Westwood Lands, Inc. · US

Inventors

• James M. Gillis · Chassell, US
• Xiaodi Huang · Houghton, US
• Jiann-Yang Hwang · Houghton, US
• Peter M. Larson · Narragansett, US
• Kenneth L. Paxton · Lexington, US
• Domenic Popko · Lake Linden, US
• Zhiyong Xu · Houghton, US

Key dates

• Filing date: Dec 21, 2006
• Grant date: Oct 12, 2010
• Expiry date: Mar 12, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for separating different products from steelmaking slag includes reducing the average particle size of slag from a steelmaking process into fine particle size material, and separating the fine particle size material into at least an iron rich product and a silicate rich product based on the differences between these products in at least one or more properties including magnetic susceptibility, particle size or specific gravity.