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利用作者导出的计算公式,系统研究了赤铁矿反浮选脱硅捕收剂N-十二烷基-1,3-丙二胺(CH3(CH2)11NH(CH2)3NH2,记为DN3)与N-十二烷基乙二胺(CH3(CH2)11NH(CH2)2NH2,记为DN2)的结构性能,得出了该类捕收剂应具有基团电负性较小、前线轨道能级差的绝对值较小、极性基断面尺寸较大、中心原子净电荷较大等结论.采用不同捕获剂进行了赤铁矿反浮选脱硅试验.结果表明,DN3和DN2的选择性和捕收性都好于十二胺(CH3(CH2)11NH2),DN3的选择性优于DN2,DN2的捕收性优于DN3.计算结果与实际浮选试验结果相符合.
Using the formula derived by the author, the study on the hematite anti-flotation desiliconization collector N-dodecyl-1,3-propanediamine (CH3 (CH2) 11NH (CH2) 3NH2, And N-dodecylethylenediamine (CH3 (CH2) 11NH (CH2) 2NH2, denoted as DN2). It is concluded that the collector of this kind should have the advantages of smaller electronegativity of the groups, The results showed that the selectivity of DN3 and DN2 and the selectivity of DN2 and DN2 were higher than that of DN3 and DN2, (CH3 (CH2) 11NH2), the selectivity of DN3 is better than that of DN2, and the yield of DN2 is better than that of DN3. The calculated results are consistent with the actual flotation results.