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In mineral processing, to make valuable ores realize single separation, ores must be crushed and grinded into powdery materials. In the process of crushing, all kinds of crushers are used, while a variety of ball mills, rod mills and autogenous mills(or semi-autogenous mills) are available in the process of grinding. Ball mills and rod mills take steel balls and steel bars as their medium, but on the contrary, autogenous mills make ores themselves be a medium. An autogenous mill is featured by combining mid-fine crushing with coarse grinding. Ores can be crushed and grinded through mutual impact and grinding with themselves as grinding media. This machine can produce -0.074mm ores which accounts for 20%-40% of total amount. The comminution degree can be 4000－5000, ten times higher than ball mills and rod mills.
On April 18 2012, Yantai ITAO Mining Co., Ltd. was selected to be one of “green mine” test units which were second batch announced by Ministry of Land and Resources. Furthermore, it was also rated “Trial Project in Mineral Resources Saving and Comprehensive Utilization” with reward ＄8 million. In spite of a new company, ITAO has been awarded so many honors in such a short time, owning to its environmental protection and advanced technology. ITAO Company is given priority to the feldspar.
On April 18, the ministry of land and resources announced the second list of test units of green mine, which is a prelude to promote the construction of green mines in China.
The current situation of mining machinery industry is mostly promising, but for the small and middle mining machinery companies, they meet very serious situation. The detailed different situation as follow:
Since 1949, with rapid development of China, the number of mines and exploration is increasing greatly. In the process of exploration, there is no denying that the environment is polluted and destroyed with backward technologies and equipment. The vegetation destruction and piled tailings leads to serious soil erosion and desertification of land. As time goes on, the environment protection and treatment is more and more difficult.
The recovery rate is most important security for dressing plant benefit. In order to ensure the stability of recovery rate, owner of dressing plant should often inspect the beneficiation process. Xinhai summarized some necessary inspection matters and method by 20 years technical support to customers.
As a component of products in the mineral processing industry, tailings have little value. However, Xinhai experts express that tailings have great potential to be explored.
Xinhai automatic flotation control system can be applied to metal mines, nonferrous metal mines and nonmetallic minerals. It mainly contains pulp density, the amount of reagent, the liquid level of flotation tank and inflating volume. Finally, it can enhance the concentrate grade and recovery, stabilize the flotation process, and reduce the costs in the dosage of reagent and labor personnel.
Yantai Xinhai Mining Machinery Company develops innovative iron processing equipment with a world-leading level. In 2010 and 2011, Yantai Xinhai ranked first by virtue of more than 20 patents every year. They are widely used in the field of mine, coal washery, building materials, chemical, heat power plant, sand and gravel plant, etc.
With twenty years development, Yantai Xinhai Mining Machinery Company has become the most comprehensive company with the strongest comprehensive power. Xinhai have developed and improved 80% of mining equipment such as magnetic separator.
Whatsapp:+8613811510145 
xhmineral@ytxinhai.com 
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