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:
Sep. 26, 1978
Filed:
Apr. 22, 1977
Applicant:
Inventor:
Harald Krogsrud, Gjettum, NO;
Assignee:
Elkem-Spigerverket A/S, Oslo, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
210 / ; 55 89 ; 210 67 ; 210 71 ;
Abstract
A method of treating the silica dust recovered from waste gasses by wet-washing of the gasses is disclosed. The sludge material is charged to a rotary kiln at a temperature of 800.degree. - 1,400.degree. C. in the presence of an oxidizing or reducing agent whereby the sludge is converted to pellets while phenols and cyanides are simultaneously treated.