why mined ore is crushed in a mill zinc processing
why mined ore is crushed in a mill,zinc processing. zinc processing Britannica. Zinc ores are recovered by many mining techniques, ranging from openpit mining (mainly in the case of oxidized ore,is crushed to about 19 centimetres (075 inch), combined with water, and ground to less than 01 millimetre in a ball mill » Learn More. crusher used to crush zinc ore get price