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

1978-06-06

1979-10-09

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156344, 156631, 156664, C23F 102

Patent

active

041705130

ABSTRACT:
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.

REFERENCES:
patent: 3375181 (1968-03-01), Koech
patent: 4106977 (1978-08-01), Klaus

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