含金氧化渣浆泵矿石的特点是什么?

含金氧化矿石明显地与硫化矿不同，氧化矿一般距离地表10~30m的范围，储量不大，矿体比较分散。由于矿物和金粒表面蚀变、氧化和污染，使其失去原来的可浮性。另一方面，由于微细粒矿泥(原生矿泥和次生矿泥)含量大，微细粒矿物质量小，比表面大，表面能亦大，使得水介质对这些微细粒矿物和矿泥的动阻力、各种界面力、双电层斥力等的影响愈益显著，布朗运动的扩散行为的影响远远超过重力的作用，使得它们与气泡碰撞黏附的概率降低，泡沫发黏，比浮选速度小;有时大量矿泥进入精矿，造成金精矿品位过低。此外，矿泥和微细矿粒还吸附浮选药剂和显微、次显微金。这些都导致浮选过程的复杂化，增加生产成本，降低选矿回收率。所以，直接采用浮选法处理含金氧化矿.金的浮选回收率一般只有60%左右，精矿品位也不高，甚至达不到金精矿标准。如果采用混汞-重选工艺流程处理，金的回收率也只能达到60%~70%，同时，重选尾矿再进行氰化，渣浆泵厂家回收率虽然能够大幅度提高，但工艺流程复杂，环保问题也难以解决，对于中小型黄金企业来说，经济上也不合算。

What are the characteristics of gold bearing oxidized slag slurry pump ore?

The gold bearing oxidized ore is obviously different from the sulfide ore. generally, the oxidized ore is 10-30m away from the surface, with small reserves and relatively scattered ore bodies. Due to the alteration, oxidation and pollution of the surface of minerals and gold particles, they lose their original floatability. On the other hand, the influence of water medium on the dynamic resistance, various interface forces and double electric layer repulsion of these fine-grained minerals and slimes is more significant because of the large content of fine-grained slimes (primary slimes and secondary slimes), the small quality of fine-grained minerals, the large specific surface energy and the large surface energy. The diffusion behavior of Brownian motion far exceeds the effect of gravity, making them and bubbles The probability of collision adhesion decreases, foam viscosity is smaller than flotation rate. Sometimes a large amount of ore mud enters the concentrate, resulting in low grade of gold concentrate. In addition, slime and fine ore particles also adsorb flotation reagents, micro and sub micro gold. All of these lead to the complexity of flotation process, increase of production cost and decrease of beneficiation recovery. Therefore, the flotation recovery rate of gold is only about 60%, and the concentrate grade is not high, even can not reach the gold concentrate standard. If the process of mixing and gravity separation is adopted, the recovery rate of gold can only reach 60% ~ 70%. At the same time, if the tailings of gravity separation are cyanidated again, the recovery rate of slurry pump manufacturer can be greatly improved, but the process flow is complex, and the environmental protection problem can not be solved. For small and medium-sized gold enterprises, it is not economical.