Pottery granule is round or elliptic sphere commonly, but a few imitate gravelly pottery granule are not round or elliptic sphere, however irregular gravelly form. Their shapes vary with different technologies. They have a hard shell on the surface, which can isolate water to a certain extent. Therefore, they are often used as raw materials for buildings.The types of pottery granules are divided according to raw materials:1, changzhou microtek since the insulation wall materials co., LTD. Introduction to lytag solid waste as the main raw material, add a certain amount of cement and water and processed into a ball, sintering expansion or natural curing, particle size in the light of more than five ㎜ coarse aggregate, hereinafter referred to as lytag.2, clay ceramsite with clay, clay, etc as main raw materials, through processing and granulating, burning swelling, and particle size in the light of more than five ㎜ coarse aggregate, called clay ceramsite.3. Type of ceramsite: shale ceramsite is also called expanded shale. In clayey shale and SLATE by crushing, screening, or into a ball, after grinding burn expansion of grain size in the light of more than five ㎜ coarse aggregate of shale ceramsite. Shale ceramisite can be divided into ordinary shale ceramisite formed by crushing, screening and burning and swelling according to technological methods. A round spherical shale pottery granule formed by pulverization, balling, and burning.4. Garbage ceramisite is a sintered ceramisite produced by granulation and roasting after municipal solid waste treatment. Or the garbage cinder is added to cement granulation, natural conservation, the production of free burning garbage granule. The waste ceramsite is characterized by abundant raw materials, low cost, low energy consumption, light weight, high strength and so on. Besides can make wall board, block, brick wait for new-style wall body material outside, still can use as heat preservation heat insulation, floor board, lightweight concrete, water to treat purify wait for a use, have broad market.Moreover, due to its internal porosity, this ceramic particle has good thermal insulation. The thermal conductivity of concrete prepared with it is generally 0.3 to 0.8W/ (m·k), which is 1 to 2 times lower than that of ordinary concrete. Therefore, the ceramic granule building has a good thermal insulation performance.