Method of and apparatus for tapping a furnace containing a...

Details Method of and apparatus for tapping a furnace containing a... Method of and apparatus for tapping a furnace containing a...

C - Chemistry, Metallurgy

21

B

39/98

C21B 7/12 (2006.01) F27D 3/15 (2006.01)

Patent

CA 1208006

- 10 - ABSTRACT OF THE INVENTION "A METHOD OF AND APPARATUS FOR TAPPING A FURNACE CONTAINING A MELT TO BE TAPPED" The invention relates to a method of and apparatus for tapping a furnace (1) containing a melt to be tapped, e.g. silicon prepared by the reduction of technical quality silicon dioxide with carbon. The furnace (1) has a tapping pipe (5) which is made of graphite and is electrically heated, so that material contained in the tapping pipe (5) is converted into the liquid phase and the melt can thus run out of the furnace (1) through the tapping pipe (5). Contamination of the melt is thus avoided.

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