... 3mm,3-6mm,10-20mesh 2.Powder 100-1250mesh 3.USD400-800/MT 4.Process:dry and wet method 5.Pure biotite ... material Series: Muscovite, Phlogopite, biotite, sericite, wet ground and dry groundSize: 20mesh, 40mesh, 60mesh, 80mesh, 100mesh, 200mesh, 325-2000mesh, ... ceramics products. (3) It can be used in fire-fighting dry powder, protecting layer of welding rods, conducting wires and electric cables ...