... : 16-30,30-60,etc mesh chamotte flour: 200M-325 mesh Mainly used for precision casting chamotte ... 8-16, 16-30, 30-60, 30-80, 60-80,80-120, 10-20 (mesh)Size of Precision casting flour: -200, -250 ... , -270, -325 (mesh)Features of chamotte ... 62.5Refractoriness °C(min)17501750Dustiness %(min)0.10.1Pictures of chamotte sand and chamotte flour: ...