Iron ore is an important raw material for steel producers. Generally, iron ore below 50% grade needs to be mineralized for smelting.
Natural ore (iron ore) is gradually selected from iron by processes such as crushing, grinding, magnetic separation, flotation, and re-election. The characteristics of China's iron ore and the higher requirements of the iron and steel industry for iron concentrates have brought new challenges to Chinese mineral processing workers. Therefore, there is a deeper development requirement for the metallurgical ore dressing technology in China, and the subsequent development is to promote the further improvement of the mineral processing equipment.
The beneficiation process should be as efficient and simple as possible, such as the development of energy-saving equipment, to achieve the best results in the most appropriate process. In the concentrator, equipment investment, production costs, electrical energy consumption and steel consumption of crushing and grinding operations tend to account for the largest proportion, so the calculation and operation management of crushing and grinding equipment are largely Determine the economic benefits of the concentrator.
The iron ore resources in China's iron ore resources are decreasing. The characteristics of iron ore resources are rich in rich ore, less in rich ore, associated with more minerals, more complex ore components, and finer ore inlaid grain size, which causes certain difficulties in beneficiation. . Technically speaking, advanced technologies, advanced processes and advanced equipment are urgently needed to promote the efficient development and utilization of lean iron ore resources. In terms of economic benefits, the concentrator must expand the production scale for the production of lean iron ore, and must expand the processing capacity of the ore, save energy and reduce consumption, and reduce the cost of mineral processing, so that there will be better economic benefits. Before the ore enters the grinding operation, a part of the gangue minerals mixed into the ore are pre-selected and removed, so as to achieve the loss of the original ore grade.
The pre-selection process optimized by ultra-fine crushing and coarse-grain tailing is an effective method for increasing production capacity, saving energy and reducing consumption, and creating better economic benefits.
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