Study on Synthesis and Collecting Capability of N-dodecylethylenediamine
Amine collectors with different structures and length of carbon-chain have been widely used in oxide minerals flotation. In this paper, we synthesized one kind of binary amine, N-dodecylethylenediamine, and studied its flotation performance.From the results, we can see N-dodecylethylenediamine which has excellent frothability, is a new type of chelating surfactants. And it also has fine catchability to quartz and hematite. The recoveries of quartz and hematite increase with the augment of N-dodecylethylenediamine concentration.When the dosage of collector reaches 100g/t, the recoveries of quartz and hematite achieve 95.30%and 87.89% respectively. Meanwhile, the influence of pH on the flotation recovery of hematite is studied and test results showed that, as pH increases, the flotation recovery rises until pH=9. And the recovery reaches its maximum in alkalescenee. The collector has better flotation capability to quartz than to hematite. And the maximum recovery of quartz is gained in alkaline media, which reaches 97.87%.Finally, the flotation mechanism of N-dodecylethylenediamine is discussed through the measurement of infrared spectroscopy.
N-dodecylethylenediamine Synthesis Collecting Capability Flotation mechanism
D. Z. Wei W. G. Liu H. L.Yang J. P.Jin
School of Resources and Civil Engineering, Minerals Processing, Northeastern University, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1526-1531
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）