Method of producing glass materials from ash-slag waste

Details Method of producing glass materials from ash-slag waste Method of producing glass materials from ash-slag waste

C - Chemistry, Metallurgy

03

C

C03C 3/087 (2006.01)

Patent

CA 2120573

A method of obtaining glass materials from ash-slag waste wherein the waste is heated to a melting point temperature and melted in a reducing medium. The obtained melt is cooled by a thermal shock to form a foamed glass material. Prior to heating the charge, the carbon content therein is brought to 3.0 - 8.0 wt %, and the foamed glass material is foamed under a flow of a gaseous medium resulting from decomposition of carbides formed in the melt as a result of carbon content adjustment. Carbon addition also reduces iron oxide present in the waste, this reduction facilitating iron separation from the foamed material.

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