The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1997
Filed:
Jul. 27, 1995
Applicant:
Inventors:
Donald W Kirk, Toronto, Ontario, CA;
John W Graydon, Toronto, Ontario, CA;
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423 60 ; 588231 ; 423 88 ; 423 97 ; 423107 ;
Abstract
A process for the removal of volatilizable inorganic contaminants from solid waste is provided. The process comprises the steps of: (a) providing solid waste containing volatilizable inorganic contaminants; (b) heating the waste to a temperature sufficiently high for the volatilization of the inorganic contaminants and sufficiently low so as to prevent slag formation of the solid waste, thereby producing a contaminant-rich vapor phase and a contaminant-poor solid phase; and (c) separating the solid phase and the vapor phase.