Alcoa Inc.

Elkem As

Elkem Asa

Anders Schei

Mark Weaver

Richard J Fruehan

David J Roha

Mark L Weaver

An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed.

Use of alumina-carbon agglomerates in the carbothermic production of aluminum

The present invention relates to a process for removing impurities from molten silicon by treatment of molten silicon contained in a vessel with a slag having the capability of removing the impurities, particularly boron from molten silicon wherein slag is continuously or substantially continuously added to the molten silicon and that the slag is continuously or substantially continuously inactivated or removed from the silicon melt as soon as equilibrium between the slag and molten silicon is reached with respect to the impurity elements or element to be removed.

Method for refining of silicon

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Kristiansand, Norway

Anders Schei