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. 22, 1987
Filed:
Oct. 11, 1985
Applicant:
Inventors:
Roy A Christini, Apollo, PA (US);
Kenneth P Frizzell, Chewelah, WA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 6 / ; 75 6 / ; 75 9 / ;
Abstract
Disclosed is a process for refining magnesium crude containing between about 0.7 and 1.5 wt. % calcium. The process includes mixing a flux containing from about 55 to 85 wt. % magnesium chloride and 45 to 15 wt. % alkali chlorides into a molten body of the crude. Refined magnesium is thereby produced, as well as a sludge containing calcium chloride which never has a liquidus exceeding the temperature of the molten body. The refined magnesium is then separated from the sludge.