Method of pretreating ore

Details Method of pretreating ore Method of pretreating ore

C - Chemistry, Metallurgy

22

B

C22B 1/00 (2006.01) C22B 1/02 (2006.01)

Patent

CA 2261527

A method of pretreating ore involves placing ore into a kiln. Hot gases are circulated at temperatures in excess of 1000 degree fahrenheit in the kiln to heat the ore. The hot gases are a mixture of helium and hydrogen with a helium content of at least 20% by volume in order to avoid combustion or oxidization. Ore subjected to this treatment tends to crumble, which facilitates subsequent processing.

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