提高硫精矿质量实现硫铁双资源利用的研究

Improve sulfur concentrate quality and realize double resource utilization of pyrite

提出了通过选矿技术提高硫精矿质量,可解决烧渣利用率低的问题,因此针对不同种类的黄铁矿进行了提高硫精矿质量的工艺研究。研究表明,不同种类的矿石经合理的选矿工艺都可获得高质量的硫精矿。铜硫矿石可获得硫精矿品位48.85%,含砷0.178%,硫回收率达89.86%;硫金矿石获得了硫精矿含硫48.41%,含砷0.38%,硫作业回收率82.00%;多金属硫化矿闭路结果可获得硫精矿硫品位为48.94%,含砷为0.44%,回收率为55.30%的良好指标。可研分析表明,当硫精矿品位≥45%时,焙烧所得硫酸烧渣铁含量达60%以上,直接作为铁精粉利用,实现无烧渣排放,也实现了硫铁双资源的利用。

The paper put forword to improving sulfur concentrate quality through the processing technology, and solve the problem of the utilization rate of poor cinder. Different types of pyrites are studied to improve the quality of sulfur concentrate for flotation. It is found that for the different types of ore, if choose a reasonable flowsheet and pharmaceutical systems, we can get the surfure concentrate of high quality. Copper sulfur ore can obtain sulphur concentrate grade 48.85%, 0. 178% arsenic, and sulfur recovery rate of 89.86% ; Sulfur gold ore get sulfur concentrate grade of S 48.41%, As 0.38%, and sulfur operating recovery 82.0% ; Many metal sulfide ore concentrate can obtain the closed-circuit sulfur sulfur grade of 48.94% , As 0.44% , and recovery rate is 55.30%. Feasibility analysis shows that when sulphur concentrate grade exceed 45%, roasting the sulfuric acid slag iron burn content of 60% above, and directly as iron essence pink use, achieving the possibility of not bum slag discharge and the double use of pyrite resources.