Soya nga residuo nga casting binder .

Plant asphalt is widely used, and it has a broad market prospect just as casting binder.Relevant data shows that the annual output of China's foundry industry reached 25 million tons in 2005, ranking the world's first, is the sum of the output of the United States and Germany;But only the advantage of mass production, the technical content is still in the low level, and the quality and environmental protection is the primary problem.At present, the casting binder in China is mainly divided into organic resin and inorganic binder.The former is a non-renewable resource, and the use of a large number of dioxins and other toxic substances, serious pollution of the environment.The castings produced by the latter are of high cost and of high quality.Therefore, it is advantageous to use plant asphalt from biological raw materials to make casting binder.​