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:
Jun. 24, 2025
Filed:
Apr. 30, 2019
Wacker Chemie Ag, Munich, DE;
Karl-Heinz Rimböck, Heldenstein, DE;
Konrad Mautner, Burghausen, DE;
Wacker Chemie AG, Munich, DE;
Abstract
A process for refining crude molten silicon. The process includes oxidatively refining the crude molten silicon in the production of technical silicon. The crude molten silicon is admixed during the refining with a particulate mediator which has a minimum amount of metallic silicon of 8% by mass and also at least one or more of the elements H, C, O, F, Cl, Ca, Fe and Al. The particulate mediator is described by a characteristic number K which has a value of 0.03 to 6 mmand is calculated using the formula where dis the particle size (diameter) at 50% of the mass undersize of the grading curve of the particulate mediator [mm] and the εis the mean effective porosity of the particulate mediator.