... is abundant superior bauxite in China .The ceramic proppant is sintered from this bauxite and other additives by the rotary kilns with a ... -12 mesh, 8-16 mesh, 12-18 mesh, 12-20 mesh, 16-20 mesh, 16-30 mesh, 20-40 mesh, 30-50 mesh, 30-60 mesh, 40-60 mesh, 40-70 mesh, 70-140 mesh, etc ... Waihuan Road, CBD Zhengzhou, Henan, ChinaNo.08 hydraulic frac sand for oil and gas 30/50 low density