Process and apparatus for obtaining silicon from fluosilicic...

Details Process and apparatus for obtaining silicon from fluosilicic... Process and apparatus for obtaining silicon from fluosilicic...

C - Chemistry, Metallurgy

01

B

23/326, 23/389

C01B 33/02 (2006.01) B01J 19/26 (2006.01) C01B 33/033 (2006.01) C22B 5/04 (2006.01) C22B 34/12 (2006.01) C22B 34/14 (2006.01) C22B 34/20 (2006.01)

Patent

CA 1220325

ABSTRACT OF INVENTION Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt.

444042

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