clay (20mesh-800mesh)

The pottery clay is refers includes ferroguinously but brings tone andso on tan, iron grey, reddish purple color, has the good plastic clay.Mineral ingredient by montmorillonite, kleit primarily. The potteryclay mainly serves as the burn outer wall, the brick, the ceramicappliance and so on。
  Hengshan clay resources are mainly located in a small area. Upper Cretaceous strata are mainly containing silty clay, the third century of eluvial rushed slope. Quaternary Pleistocene Qi mouth Group silty clay. Deposit (points) : Analysis of samples containing silica 65.18-71.86%. 15.02-17.99% aluminum oxide, ferric oxide 3.27-6.61%. 0.75-1.68% calcium oxide, magnesium oxide 0.89-2.07%. Loss on Ignition 4.19-6.20%