... , metallurgy, coal powder, metallurgy materials, slag, clay stone etc. The dryer has advantages of reasonable structure, high efficiency, low energy ... Mandy contact number: 0086-15137102919 1. What the dry can be used for ?This machine can dry many kinds of materials which ... the coal or gas as the heating source?Yea, you can use coal, gas, electricity, oil and wind power to heat the dryer machine ...