高剪切搅拌调浆对细粒级黄铁矿的浮选强化研究

结合微细粒浮选过程强化理论，以江西铜业股份有限公司武山铜矿选铜尾矿中细粒级黄铁矿为研究对象，使用计算流体力学仿真方法对常规搅拌桶和高剪切改质机内部流场特征进行对比分析，同时开展半工业尺度的搅拌调浆浮选试验，研究了不同调浆方式和强度对细粒级黄铁矿浮选的影响规律。研究结果表明：高剪切改质机内湍动能的耗散率高且分布更为均匀，对武山铜矿细粒级黄铁矿起到了良好的活化改性效果，同常规搅拌桶相比硫回收率提高了9.76个百分点，且随着搅拌强度的提高，硫的回收率明显提高，尤其是细粒级硫可得到有效回收。

Flotation Strengthening of Fine-grained Pyrite by High-Shear Stirring and Slurry

Combined with the strengthening theory of fine particle flotation process, taking fine-grained pyrite in the tailings of Wushan Copper Mine of Jiangxi Copper Co., Ltd. as the research object, the internal flow field characteristics of conventional conditioning stirred tank and high shear modifier were qualitatively compared and analyzed by computational fluid dynamics simulation method, and at the same time, semi-industrial-scale conditioning and pulp flotation experiments were carried out, and the influence of different mixing methods and grout intensity on fine-grained pyrite flotation was studied. The results indicate a high dissipation rate of turbulent kinetic energy and a more uniform distribution, which effectively activates and modifies the fine-grade pyrite in Wushan Copper mine. Compared to conventional stirring buckets, the sulfur recovery rate can be increased by 9.76 percentage points. Furthermore, an enhanced stirring intensity significantly improves the sulfur recovery, particularly for recovering fine-grade sulfur.