What ceramic sand is ?

ceramic ball , is used to replace concrete gravel and pebbles , is the use of a variety of materials of various types of clay, slate , shale , coal , and industrial solid waste , etc., through the ceramic sintering.
Ceramic sand has a low density , excellent thermal insulation , impermeability, excellent alkali aggregate reactivity, low water absorption, frost resistance and good durability , and many other advantages. hydraulic fracturing proppant, by definition, ceramic particles , called fine sand , also known as oil fracturing proppant .
Most circular or oval sphere, but some ceramic imitation gravel is not circular or oval sphere, and irregular shaped gravel . The appearance of color due to different ceramic materials and process used and different. Firing ceramic colors are mostly dark red , red ocher , there are some special varieties of pale yellow , gray and black ceramic proppant sand , gray , blue gray and so on. Ceramic sand proppant products