China is the country with the largest demand for copper. Its demand accounts for 45% of the global total demand. The copper mining producers are located in Germany, Chile, Indonesia and Canada respectively. It takes a lot of manpower to extract the refined copper and it needs a lot of processes to refine it, which also puts a lot of pressure on the environment. For now, copper mines are hit hard by a number of factors, such as the strike of labor disputes in Chile and the lack of electricity in Zambia and the Congo, which have limited the exploitation of copper. Many workers in Chile’s largest copper mines live near the Cujkammata copper mine, which generally accounts for one-tenth or three-tenths of the overall cost for the copper extractive industry due to the more dangerous mining , So underground mining labor costs more.
In the design and production process of the concentrator, in order to maximize the recycling of useful minerals in the selected ores and reduce the energy consumption of the concentrator as much as possible, the environmental impact and pollution are reduced, and the economic and social benefits of the concentrator are increased The choice of crushing, grinding, flotation and concentration equipment is especially important. Crushing, grinding process energy consumption and steel consumption accounted for more than half of concentrator production, especially the grinding process, energy consumption per unit far higher than the crushing process, accounting for more than 85% of the entire mineral crushing operations, accounting for election plant Of 30% to 60%. Therefore, the use of new crushing process, the selection of large-scale high-efficiency crushing equipment and other methods to strengthen the crushing operation, reduce the ore feeding ore size, is to improve the efficiency of crushing, reducing the cost of dressing an important way, but also designed the beneficiary should follow and consider the basic in principle.
The crushing process of the traditional crushing process has a large particle size and it is difficult to implement the energy saving principle of more crushing and less grinding. The process features are: high energy consumption, long process. In general, the crushing operation requires the use of two or more pieces of broken to get the ideal product size, this will result in an increase in the number of pieces of equipment crushing plant area increases, virtually increase the capital investment. Therefore, the design process using large, high crushing equipment is the development trend of crushing process.