近些年来,世界上随着钢铁产量的增长,铁矿资源大量开发,富铁矿、强磁性贫铁矿和粗粒易选弱磁性贫矿日趋减少,细粒嵌布难选的弱磁性贫铁矿石的利用逐渐增多;同时,由于对细粒铁矿物的回收尚未研究出经济有效的手段,现有选厂金属流失相当惊人,据报导,全世界每年约有价值九亿二千万美元的铁以细泥损失掉;加上能源危机和环境污染等问题,使得细粒 In recent years, along with the increase of steel output and extensive exploitation of iron ore resources in the world, the iron-rich ore, ferromagnetic iron-poor ore and coarse-grained easy-to-choose weak magnetic lean ore are declining, fine grain embedded hardly selected weak magnetic lean At the same time, as the economic recovery of fine-grained iron ore has not been studied economically and effectively, the loss of the existing concentrator is rather alarming. It is reported that there are about 920 million worth of minerals in the world each year The dollar of iron to fine mud loss; plus the energy crisis and environmental pollution problems, making the fine