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:
Oct. 10, 2023
Filed:
Dec. 18, 2017
Applicant:
Norwegian University of Science and Technology (Ntnu), Trondheim, NO;
Inventors:
Jafar Safarian, Trondheim, NO;
Gabriella Tranell, Trondheim, NO;
Assignee:
NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (NTNU), Trondheim, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/023 (2006.01); C01B 33/037 (2006.01);
U.S. Cl.
CPC ...
C01B 33/023 (2013.01); C01B 33/037 (2013.01);
Abstract
A process for preparing a highly pure silicon by reduction of a calcium silicate slag using a source of aluminum is disclosed. The process involves forming a molten calcium silicate slag, reducing the calcium silicate slag to Si metal and forming a calcium aluminate slag, and separating the Si metal from the calcium aluminate slag.