In our country, the resource of iron ore is scarce; ore content are lean and the cost of exploitation is high.
我国是铁矿石资源贫乏国家，矿石品位低，开采成本高。
It is difficult to use conventional concentration technology to treat lean magnetite ore which has a low iron content, due to high cost.
贫磁铁矿由于含铁量低，采用常规工艺分选处理时，由于成本高而难以实施。
It is pointed out that the research on the beneficiation technology for lean and refractory iron ore resources should be strengthened so ast...
指出今后在贫铁矿资源、复杂难选铁矿资源分选方面还需加强研究，以实现铁矿资源利用技术的整体提高。
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