... , kaolin, cement, phosphate rock, gypsum, glass, manganese ore, titanium ore, copper ore, chrome ore, refractory materials, insulation materials, coal ... black, pottery disabilities, bone meal, titanium dioxide, iron oxide, quartz Mohs hardness of not more than 7 and humidity below ... processing, product size is in the range of 80-325 mesh arbitrary regulation, part of the material up to 600 mesh. ...