In general, thickener is applied to finish the work of concentrating and tailings dewatering before filtration. It also goes for the chemical industry, sewage treatment industry, and concentration and purification of solids. The thickener is mainly composed of two parts including thickening tank and rake-type mud scraper, and the tank is used to store the slurry while the scraper is used to deal with the settling materials. Thickening equipment developed lately in China. The first thickener was born in Shenyang Mining Machinery CO., LTD, which made in accordance with Soviet-style thickener. With about a decade of exploration, a series of thickening products are produced in the mid-1960s., which met the needs of the middle and small scale dressing plants in domestic basically. By the 1970s, thickening equipment was in the trend of systematization and standardization, and the classification became more complicated. As the policy of reform and opening up in the 1980s, lots of new technology and advanced equipment were introduced into China, which promoted the rapid development of the thickening in China. Then various specifications and models of thickeners were produced, and the technology has become increasingly advanced, such as the large-scale thickener with φ100m,the