The ultrafine mill is indispensable in the ore beneficiation process and rock and ore crushing process, and at the same time it is also the necessary equipment for other industrial departments in rocks, raw materials and other materials crushing. According to the property, purposes and quantity of the to-be-tested ores, rocks and materials, different ultrafine mill can be selected. The frequently used ultrafine mill includes jaw crusher, impact crusher, cone crusher, hammer crusher and roller crusher and other special type crushers. The developing time of the ultrafine mill in China is relatively late. Before New China was founded, we could barely manufacture any type of ultrafine mill; there has not ultrafine mill manufacturing industry until New China was founded, and we started from imitating traditional and foreign crushers, and gradually develop to independent designing and manufacturing all kinds of ultrafine mill. By the 1960s, the ultrafine mill in our country has formed series product. During the end of the 1970s and the earlier 1980s, with the introduction and absorption of foreign advanced production technology and equipment, we are able to produce some crushing machines with internationally advanced level. In the meantime, various ultrafine mill manufactured by our country has been improved and innovated in structure and materials, and the equipment performance has improved significantly, and different models and specifications are increased, forming crusher series with different purposes. Now they are able to basically satisfy the needs of domestic ore beneficiation department. However, compared with foreign advanced level, the ultrafine mill manufacturing by our country still has a gap in equipment structure, models and specifications and technical performance. In recent years, with the further development of crushing machines and cooperated manufacturing of advanced crushing machines, the gap has been shortened. For example, Zenith Mining Machinery Co., Ltd specially sets up three subordinate researching centers where ultrafine mill is improved and innovated, forming Zenith brand ultrafine mill with Chinese characteristics and our company has formed a good cooperation pattern with foreign and domestic crusher manufacturing companies, and Zenith Machinery is has stepping on the path of going out of Asia and into the global market.
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