The Purpose of Crushing and Milling the Material

Topics: Ore, Iron, Material Pages: 2 (419 words) Published: April 18, 2012
Increase the material specific surface area; or for the preparation of concrete aggregate and artificial sand; or useful for the dissociation of the ores; further processing or raw materials to prepare for or ease of use. With the rapid development of the contemporary economic, the social demand for various metals, non-metallic, chemical, mineral, as well as cement, building materials and other materials and the growing scale of production, the rapid increase in the amount of material need comminution. Since the 1990s, worldwide each year through the amount of comminution of the material to reach 10 billion tons. Annual output of brittle materials in China has reached more than 1.5 billion, of which iron ore is about 240 million tons, more than 100 million t of non-ferrous metal ores, non-metallic minerals of more than 260 million tons, more than 030 million tons of Industrial Minerals, is about 400 million tons of cement, building materials more than 470 million tons of limestone. The vast majority of these materials to go through the comminution visible crushing and powder engineering has played a huge role in the national economy. In the mineral processing industry, the concentrator comminution of the production costs of the job, on average, accounted for more than 40% of the full cost of the production costs of ground operations, on average, accounted for more than 40% of the full cost of ground equipment investment accounted for beneficiation about 60% of the plant investment. In the cement industry, cement plant comminution role in the cost of about 20% of the cost of production, broken machinery, power consumption is about 10% of the total electricity consumption of the whole plant, powder mechanical power consumption accounted for 60%. Comminution process power consumption, and its enormous consumption of steel and raw material consumption. Average power consumption of only the existing concentrator, for example, broken mill per ton of ore 16KW.H,...
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