In the mineral processing industry, production costs cover more than 40% of the total cost on average, while the production costs of grinding covers more than 40% on average. While the investments of grinding equipments account for about 60% of the total investment of mineral processing industry.
All the processes that make large particle materials into small particles through outside force can be called crushing, the mechanical appliance is called crusher. All the processes that make small particle materials powder through outside force can be called crushing or grinding. It can be called powder mill for short. The machinery can be called pulverizer and grinding mill .The machinery that combine the crushing and grinding can be called crushing and grinding machine.
In the cement industry, the role of broken grinding costs in the cement works are around 20% of production costs, and electricity consumption of crushing machinery accounts for about 10% of total electricity consumption, while the powder mill accounts for 60%.
With the economic rapid development of modern society, The demand and production scale of all kinds of metal, nonmetal, chemical minerals, as well as cement, building materials increase gradually, so the material that needs to be crushed and grinded is increasing rapidly. Since the 90s, the annual amount of material through the broken grinding is up to 100 million tons. China's annual output of brittle materials has already reached more than 1.5 billion, of which about 240 million tons are iron ore, more than 100 million tons of nonferrous metals ore, more than 260 million tons of non-metallic minerals, over 30 million tons of chemical minerals, about 400 million tons of cement ,more than 470 million tons of limestone for building. Most of these materials must be broken through the grinding, so we can see crushing and powder projects play a huge role in the national economy.
Many different types of stone crusher, stone crushing...
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