摘要
The strong collecting performance of N-laurel-1,3-diaminopropane（ND13） with respect to quartz encouraged us to study its separation of hematite and quartz mixtures in a laboratory cell flotation test The results show that the best separation results can be achieved when the pulp pH is 7.27 and 58.3 mg/L collector plus 6.67 mg/L depressant are added to the mixture.Products with 58.45%,62.78%and 63.72% iron grades can be achieved respectively when mass ratio of hematite to quartz is 2：3,1：1,and 3：2.The adsorption mechanism of ND13 on a quartz surface was investigated by zeta-potential and X-ray photoelectron spectroscopy measurements.The results reveal that electrostatic and hydrogen bonding adsorption take place between ND13 and the quartz surface,and that ND13 mainly interacts with the oxygen atoms on the quartz surface.
关于石英的 N-laurel-1,3-diaminopropane (ND13 ) 的强壮的收集表演鼓励了我们在实验室房间筹款测试学习它赤铁矿和石英混合物的分离。当肉 pH 是加 6.67 mg/L 镇静剂的 7.27 和 58.3 mg/L 收集者时，最好的分离结果的结果表演能被完成被加到混合。当到石英的赤铁矿的集体比率是 2:3， 1:1，和 3:2 时，有 58.45% ， 62.78% 和 63.72% 铁等级的产品能分别地被完成。石英表面上的 ND13 的吸附机制被希腊语的第六个字母潜力和 X 光检查光电子光谱学大小调查。结果揭示那静电并且氢结合吸附发生在之间 ND13 和石英表面，和那 ND13 主要在石英表面上与氧原子交往。
基金
Financial support for this research provided by the National Key Technology Development and Research Programs of China(Nos. 2008BAB32B14 and 2008BAB31B03)
作者简介
Corresponding author. Tel.： ＋86 24 83692711. E-mail address： liuwengang@mail.neu.edu.cn （L. Wengang）.
