加拿大安大略省北部,蕴藏有含赤铁矿、磁铁矿及其他石英类脉石的微细致密混合结晶低品位铁矿床,含铁品位不到30%。为使其单体分离必须细磨,由此生成的大量矿泥中含有相当数量的铁矿物。对于这种铁矿石的选别,进行了大量的试 In the northern part of Ontario, Canada, there is a finely-compacted mixed crystalline low-grade iron ore deposit containing hematite, magnetite and other quartz-type gangue with iron content of less than 30%. In order to separate the monomer must be fine grinding, resulting in a large amount of sludge contains a considerable amount of iron minerals. A large number of tests have been conducted on the selection of such iron ore