论文部分内容阅读
易门钢铁厂长期堆存大量(占原矿20％)粉矿无法利用,不仅浪费国家资源,而且粉矿流失引起环境污染。研究得知,该粉矿的比磁化系数为67.8×10~(-8)米~3/千克,褐铁矿、赤铁矿含量为91.89～96.63％,全部小于0.074毫米属难选细粒红铁矿。采用一粗一精二扫强磁选流程,选得产物含铁54.72％,回收率81.81％的精矿粉,尾矿符合生产水泥的原料要求,充分利用了国家资源。
Yimen Iron and Steel Plant long-term storage of large (accounting for 20% of the ore) can not be used powder, not only a waste of state resources, and the loss of fines caused by environmental pollution. The results show that the specific magnetization coefficient of the ore is 67.8 × 10 ~ (-8) m ~ 3 / kg, the content of limonite and hematite is 91.89 ~ 96.63%, all less than 0.074 mm. iron ore. Using a coarse and a fine two sweep strong magnetic separation process, the product was selected iron 54.72%, 81.81% recovery of concentrate powder, tailings meet the requirements of raw materials for the production of cement, make full use of national resources.