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铁矿物的浮选法含有铁矿物和碱性的含铁硅酸盐的低品位铁矿石进行微粉碎做为处理对象,捕收剂使用胺类(例如十二烷基胺氯化物),抑制剂为淀粉,矿浆PH为7～11.2范围内,进行浮选。此时含有碱性含铁硅酸盐矿物浮游,而铁矿物则不浮。此时捕收剂的最好浓度为6.9～20.8毫克/升,淀粉的最好浓度范围是7.5～75毫克/升(相当于100～1000克/吨矿石)。这个结果可以对到目前为止的上述还没有被炼铁工业使用不多的铁矿石,创造了工业利用的可能。《日特开昭60—150856》.
Iron flotation method Iron ore and alkaline iron silicate-containing low-grade iron ore are finely pulverized to be treated, amines (eg, dodecyl amine chloride) , The inhibitor is starch, and the pulp PH is in the range of 7 to 11.2 for flotation. This time contains alkaline iron silicate minerals floating, while the iron minerals are not floating. The best concentration of collector at this time is 6.9-20.8 mg / l, and the best concentration of starch is 7.5-75 mg / l (equivalent to 100-1000 g / t ore). This result has created the possibility of industrial utilization of the above iron ore that has not been used much by the ironmaking industry so far. Japanese Patent Laid-Open No. 60-150856.