黄金科学技术 ›› 2023, Vol. 31 ›› Issue (2): 340-348.doi: 10.11872/j.issn.1005-2518.2023.02.160
Qianfei ZHAO1,2(),Hongying YANG1,2(),Linlin TONG1,2
摘要:
以石英、长石和方解石3种典型脉石矿物为吸附剂,NaCN为吸附质,考察了吸附时间和吸附剂添加量对CN-吸附效果的影响。同时,采用固着液滴接触角检测法分析了脉石矿物表面吸附CN-前后的润湿性差异,对吸附结果进行吸附动力学模型拟合。结果表明:石英、长石和方解石对CN-表现出不同程度的吸附性和选择性。通过动力学研究发现:石英和长石对CN-的吸附以物理吸附为主,CN-与方解石之间存在键合吸附作用。通过检测接触角发现:CN-的吸附导致脉石矿物表面亲水性增强,其中以石英表面接触角的降低最为明显。经过SBX浮选药剂作用后,脉石矿物表面接触角有所增加,但仍呈现亲水性质。说明氰化作用不会造成氰化渣浮选回收硫化矿时非目标矿物的跟浮,为实现氰化渣中矿物高效分离浮选提供了理论指导。
中图分类号:
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