Expanded perlite: a natural acidic glassy lava nonmetallic minerals, including perlite, pitchstone and obsidian, but three different crystalline water content. Since the volume at 1000 ~ 1300 ℃ high temperature rapid expansion of 4 to 30 times, it is referred to as expanded perlite. General requirements for expansion ratio> 7 to 10 times (obsidian> 3 times available), about 70% silica. Both open pit mining. No dressing, just crushing, screening can be. The main purpose as a filter, catalysts, molecular sieves, and carrier rubber, fertilizers, pesticides. Widely used in construction, metallurgy, petroleum, machinery, light industry, electricity, water, casting, medicine, food, agriculture, forestry, horticulture and other sectors. Often warm thermal conductivity 0.0245 ~ 0.048W / (m · K), high-temperature thermal conductivity of 0.058 ~ 0.175W / (m · K), a low temperature thermal conductivity of 0.028 ~ 0.038W / (m · K), the maximum use temperature 800 ℃. Used as efficient insulation, cold filler material. Soilless cultivation agriculture and horticulture, soil, water and fertilizer. Expanded perlite is an extremely versatile inorganic mineral material, involving almost all fields. For example: ① oxygen machine, cold storage, transportation of liquid nitrogen as oxygen-filled insulation materials. ② for wine, oil, medicines, food, water filters and other products. ③ used in rubber, paint, coatings, plastics, and other filling materials and vasodilators. ④ for the sensitizer. ⑤ used to adsorb the oil slick. ⑥ used in agriculture, horticulture, soil, water and fertilizer. ⑦ for profiles and various adhesives made with a variety of specifications and performance. ⑧ greater amount of insulation used in industrial furnaces and building on the roof and wall. Note: The application of expanded perlite manufactured goods except so some perlite insulation properties, as a basic, mixing different binders can be made to adapt to the different needs of the finished product. Our purpose is to provide a variety of horticultural perlite, perlite air separation device, do washing powder with pearlescent sand, perlite filter aid, perlite insulation board, construction glass beads, perlite and other products, according to customer request processing production of various indicators of perlite products.