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:
Jul. 20, 1982
Filed:
Feb. 26, 1981
Applicant:
Inventor:
Michael W Gammon, Whitchurch, GB;
Assignees:
Metallurgical Processes Limited, Nassau, BS;
I.S.C. Smelting Limited, Nassau, BS;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 87 ; 75 88 ; 266 44 ;
Abstract
A method of charging a zinc-smelting blast furnace with alternate loads of coke and zinc oxide material from a hopper by means of a central bell/annular bell charging device, in which the annular bell is lowered by a predetermined fixed distance, wherein the time ratio of the time taken to discharge the hopper contents to the time taken for the annular bell to be lowered the predetermined fixed distance is less than unity, preferably between 0.67 and a value less than 1.