Abstract: 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 form 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.
Type:
Grant
Filed:
December 24, 1996
Date of Patent:
June 9, 1998
Assignee:
East West Trade Group, Inc.
Inventors:
Vyacheslav F. Pavlov, Vasily F. Shabanov
Abstract: 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 form 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.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
December 31, 1996
Assignee:
East West Trade Group, Inc.
Inventors:
Vyacheslav F. Pavlov, Vasily F. Shabanov, Alexandr G. Anshits, Sergei G. Bayakin