Coated sand recycling the majority of experts has been a topic of concern, the current coated sand regeneration equipment is expensive and regeneration efficiency is not high, productivity is 5 tons / hour of thermal regeneration equipment prices in the 1200-1600 ten thousand yuan resin sand regeneration equipment, recycled coated sand will cost 65-90 yuan / ton, so the cost can not be cast for domestic enterprises generally accepted. So the development of economic and efficient coated sand recycling equipment has a broad market prospect of China's first iron-type cladding sand technology was developed in the small foundry business and successful application. The late 1970s, China's first iron built with Sand casting production lines. 80 years later, China's iron-type cladding sand casting process and application of basic research enterprises have formed teams and get faster development. At present, China has hundreds of companies with Sand cast iron used in production, with an annual output of iron with Sand casting about 100,000 tons (mainly crankshafts, camshafts, gears and export castings) renewable resin sand production line, consumption of approximately 20,000 tons of coated sand. Ordinary coated sand: its composition usually consists of quartz sand thermoplastic phenolic resin, methenamine and calcium stearate constitute resin sand regeneration principle, without concerning additives. The resin is usually relatively high amount at a certain strength requirements, do not have high temperature, low inflation, low gas and other characteristics suitable for some less demanding, simpler structure of cast iron production. High strength, low gas coated sand: is based on ordinary coated sand by adding the relevant characteristics of "additive" and the adoption of a new preparation process, so that the amount of resin dropped significantly reduce gas evolution, and can delay send gas speed. The coated sand with high strength, low inflation, low gas, gas and other characteristics of slow hair, especially for iron castings, steel castings in small and medium volume requirements for low-fat sand core, such as the body, such as resin sand reclamation sand core production line | Qingdao Heng (certified) | Liaocheng resin sand regeneration provided by Heng Machinery Co., Ltd. Qingdao. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) is Qingdao, cleaning, cleaning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qingdao Heng led the staff warmly welcome all inquiries negotiations to create a better future Qingdao Heng.