double roll crusher 1.2-140TPH capacity 20-50mm adjustable discharge size 3 ISO9001:2008 certificate 4factory direct sale 1. Double Roll Crusher Usage:It is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag, mineral slag, cement ...