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本文研究了冷却速率对三星(Samsun)快速熔融冶炼厂炼铜炉渣浮选性能的影响,以及高温融炉渣在实验室里以三种不同方式固化。所有的样品用化学分析和工艺矿物学分析的结果来表示其特性,化学分析表明:由高温炉渣制成的样品中,含Cu0.9—1.0%、Fe40%、SiO_230—32%。由老式淬坑的炉渣制成的样品中含Cul—3%。显微结构分析表明:快速冷却的炉渣中晶粒呈细粒分布,粒状炉渣中铜晶粒的粒度为1—2μm,而缓慢冷却的炉渣中铜晶粒的粒度增大到40μm以上。用戊钾黄药和Flotanol—C进行的浮选试验表明:缓慢冷却炉渣可减少铜在尾矿中的损失,提高精矿品位。按照实验室的研究,改变三星熔炼厂淬坑大小,可使该厂炉渣浮选回路生产的精矿品位和回收率得到显著的改善。
In this paper, the effect of cooling rate on the smelting flotation performance of the smelter at Samsun Fast Melting and Smelting Factory was studied, as well as the high temperature melting slag was cured in the laboratory in three different ways. All samples were characterized by the results of chemical analysis and process mineralogy analysis. The chemical analysis showed that the samples made of high-temperature slag contained Cu0.9-1.0%, Fe40% and SiO2-30-32%. Cul-3% was included in the samples made from the slag from the old quench well. The microstructure analysis shows that the grains in the rapidly cooled slag are finely distributed, the grain size of the copper grains in the granular slag is 1-2 μm, and the grain size of the copper grains in the slowly cooled slag is increased to more than 40 μm. Flotation experiments with pentavalent xanthate and Flotanol-C showed that slow cooling of the slag reduces the loss of copper in the tailings and enhances the concentrate grade. According to laboratory research, changing the size of the quenched pit at the Samsung smelter will result in a significant improvement in grade and recovery of concentrate produced in the slag flotation circuit of the plant.