US 11,874,064 B2
Hood for Si-metal tapping
Evangelos Bertakis, Burghausen (DE); Ronald Eulenberger, Kastl (DE); and Einar Olav Schei, Kyrksaeterora (NO)
Assigned to Wacker Chemie AG, Munich (DE)
Appl. No. 16/639,970
Filed by WACKER CHEMIE AG, Munich (DE)
PCT Filed Feb. 22, 2018, PCT No. PCT/EP2018/054384
§ 371(c)(1), (2) Date Feb. 18, 2020,
PCT Pub. No. WO2019/161897, PCT Pub. Date Aug. 29, 2019.
Prior Publication US 2020/0393198 A1, Dec. 17, 2020
Int. Cl. F27D 17/00 (2006.01); C01B 33/037 (2006.01); F27D 1/18 (2006.01); F27D 3/15 (2006.01); C22B 9/20 (2006.01)
CPC F27D 17/002 (2013.01) [C01B 33/037 (2013.01); F27D 1/1808 (2013.01); F27D 3/1509 (2013.01); F27D 17/003 (2013.01); C01P 2006/80 (2013.01); C22B 9/20 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A process for the production of silicon in a submerged arc furnace, wherein liquid silicon and refining gas escape from a taphole of a crucible, wherein the liquid silicon flows on a tapping spout into a ladle, wherein the refining gas is suctioned off in a taphole hood attached to the furnace close to the taphole, the taphole hood having at least two suction ducts which are placed asymmetrically on either side of the hood.