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马钢姑山铁矿为应对盈利的小块产品需求量下降的局面 ,从调整产品结构入手 ,适时提出新工艺 ,采用6 0 0mm× 10 0 0mm新型永磁筒式强磁选机 ,对从细碎回笼矿中回收块矿进行了工业试验生产 ,并投入运行。结果表明 ,在 - 45 +14mm粒级入选、采场品位 43 82 %时 ,可得到块矿合格矿品位 5 5 4 7%,回收率 46 91%的较好指标。
Magang Iron and Steel Gushan mine in response to the situation of the decline in demand for small pieces of products, starting from the adjustment of product structure, timely introduction of new technology, the use of 660mm new permanent magnet tube strong magnetic separator, Recovery of mining ore lumps recovered for industrial trial production, and put into operation. The results showed that when the grain size of - 45 + 14mm was selected and the grade of stope was 43 82%, a good index of 544.7% ore grade and 4691% recovery rate was obtained.