We are operating 11 state-of-art ceramic proppant production lines in Henan and Shanxi province, China. Three of them are with 2.5×40 m rotary Kiln; five of them are with 2.5×36 m rotary kiln; one of them has 2.5×60 m rotary kiln; two 2.4×156 tunnel kiln. We have four sets of MX2295 ultra-fine ball miller, five 5R Raymon powder mill, and six 4R raymon powder mill. All production lines are fully-automatic or semi-automatic, which significantly reduces labor intensity, improves production efficiency and provide solid foundation for the production of special products.
Currently, we mainly manufacture 20/40 and 30/50 mesh medium and low density ceramic proppants. Under 69 MPa closure stress, the crush ratio of medium density and medium strength products is kept below 6 %. Our light-weight products have apparent density less than 2.78 g/cm3 and bulk density less than 1.45. Under 52 MPa closure stress, the crush ratio of light-weight proppant is below 5%. We are also able to manufacture 40/70 ceramic proppants with crush ratio less than 6% under a closure stress of 86 MPa. We are now developing ulta-light-weight products using our world-leading ceramic proppant technology，which will be launch to large scal