Break through hard materials and powdery materials, and grind the mateials such as talc and fly ash. GKW Micro Powder Mil is maily used n chemical and bulding ndustry such as gding glass, rubber pesticides enamel, Paint, phosphate ferilizer paper Hardness below seven Mohs hardness following humidity below 6 on-flammable and non-explosive matarials. Such as: tal, barite, calcite, mestone, manganese ore, iron are soil, chrome ore, quartz, gypsum, bentonite, etc.