Recovery of tungsten carbide from scrap mining bits

Details Recovery of tungsten carbide from scrap mining bits Recovery of tungsten carbide from scrap mining bits

C - Chemistry, Metallurgy

23

F

149/12, 26/88

C23F 1/02 (2006.01)

Patent

CA 1090987

ABSTRACT OF THE DISCLOSURE Tungsten carbide inserts are recovered from scrap mining bits by treatment in a sulphuric acid bath to eat away part of the steel surrounding the inserts and then heating the bit and vibrating the heated bit to knock out the inserts. In a modification used on cross-type bits, heat and vibration alone are used.

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