Coltan / columbite mining plant - walker
The water around the crater was "stirred" so that the coltan ore settled to the bottom of the crater, and the miners retrieved it. This mining method has a great impact on the environment. ... than 20mm. The capacity of our ball mill is about 1-95t/h and the discharge is 0.074-0.4mm. The dry grinding and wet grinding, lattice type and ...