世界矿物资源贫、细、杂日趋严重。由于工业发展的需要以及考虑到对人类和自然环境造成的影响,选矿所采取的对策是大而精。所谓大是加大处理量,建立大型选厂,采用大型设备,从整个资源大局出发等等; The world’s mineral resources are poor, thin and miscellaneous increasingly serious. Due to the needs of industrial development and taking into account the impact on human beings and the natural environment, the measures taken for beneficiation are big and fine. The so-called large is to increase throughput, the establishment of large-scale election plant, using large-scale equipment, starting from the overall picture of the overall resources, and so on;