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:
Apr. 05, 2011
Filed:
Mar. 17, 2003
Applicants:
Erik Enebakk, Kristiansand, NO;
Gabriella Maria Tranell, Trondheim, NO;
Ragnar Tronstad, Kristiansand, NO;
Inventors:
Erik Enebakk, Kristiansand, NO;
Gabriella Maria Tranell, Trondheim, NO;
Ragnar Tronstad, Kristiansand, NO;
Assignee:
Elkem ASA, Oslo, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 7/04 (2006.01); C22B 61/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a calcium-silicate based slag having a phosphorus content of less than 3 ppmw. The invention further relates to a method for producing low phosphorus calcium-silicate based slag, where molten calcium-silicate based slag is treated with a molten ferrosilicon alloy in a vessel, whereby phosphorus in the calcium-silicate based slag is transferred to the ferrosilicon alloy, and a low phosphorus calcium-silicate based slag is removed from the vessel.