Phenolic resin sand regeneration is based on the principle of regeneration of waste sand at high temperatures, enabling crystal-shaped silicon oxide silica sand - the structural variants in the same quartz crystal transformation from α β crystal form, reducing the thermal expansion coefficient of silica sand. Reclaimed sand used, can reduce the deformation of the casting, burrs and other defects. When the regeneration of waste sand coated sand, sand the surface of the resin film also makes burning and silica impurities such as metal oxides peel, improve silicon-oxygen bond active silica sand. When can improve regeneration sand instead of the original production of coated sand coated sand coated sand of enterprises, increasing sand strength to prevent sticky sand casting and porosity. Century has come, this is a modern high-tech rapid development and product quality, environmental protection era of fierce competition. People for the requirements of their own living environment increasingly high, companies should follow the requirements of environmental laws to organize production. Foundry industry is the machinery industry pollution, energy consumption, and poor working conditions in the industry. 21st century styling, core technical progress key issues should be the development of non-polluting, less pollution, low production cost, energy-saving materials and labor conditions are good modeling, core processes. Therefore coated sand plant, coated sand technology in the future development direction should be: (1) reduction of environmental pollution coated sand, the development of low free phenol, low gas, less pollution phenolic resin, natural protection of human survival environment. (2) study of phenolic resin substitutes. Because phenolic resins are expensive to develop a new type of cheap binder is a priority. (3) further research and improvement of rheological phenolic resin, and constantly improve the reaction resin coating and curing properties. (4) study the performance of resin synthesis process control, resin macromolecules and small molecules suitable grading also need further research to improve the strength and toughness and resistance to shelling resin. (5) further study the reuse of the old sand. As China continues to increase the amount of coated sand coated sand equipment, many manufacturers have reached several thousand tons more than the amount of research coated sand sand reclamation and reuse old already has great practical significance, not only can improve the coated sand performance, but also to save costs, reduce waste materials on the environment pollution equipment coated sand, coated sand Shanghai, Qingdao Heng Heng Machinery Co., Ltd. is provided by Qingdao. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) strong, credible, Shandong Qingdao Cleaning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Qingdao Heng and you hand into the brilliant, for a better future!