摘要：为了研究离心选矿机的操作参数对选矿效果的影响, 对离心分选过程中处于不同区域的矿物颗粒进行动力学分析, 得出分选锥转速、反冲水流量、给矿流量、给料质量分数为影响矿物颗粒沉降的主要因素。利用Fluent对离心选矿过程进行数值模拟, 分析离心选矿机操作参数对质量沉积率的影响, 并通过实验验证了仿真结果的可靠性和最佳操作参数的准确性。结果表明, 随着分选锥转速、反冲水流量、给矿流量、给料质量分数的增大, 质量沉积率呈现先增大后减小的趋势;当分选锥转速为710 r/min, 反冲水流量为68 L/min, 给矿流量为0.66 m3/h, 给料质量分数为20%时, 选矿效果最佳。
关键词：离心选矿机；动力学分析；数值模拟；质量沉积率
Abstract：In order to study the influence of the operating parameters of the centrifugal concentrator on the beneficiation effect, the dynamic analysis of mineral particles in different regions in the process of centrifugal separation was researched.The main factors affecting the settlement of mineral particles were the rotational speed of the conical cone, the flow rate of the reverse water, the flow rate and the concentration of the ore. The centrifugal dressing process was numerically simulated by Fluent, and the influence of operation parameters of centrifugal concentrator on the mass deposition rate was analyzed. The reliability of simulation results and the accuracy of the best operation parameters were further verified by experiments. The results show that the mass deposition rate increases first and then decreases with the increase of the rotating speed of the conical cone, the flow rate of the reverse water, the flow rate and the concentration of the ore supply. When the rotating speed is710 r/min, the flow rate is 68 L/min, the flow rate is 0.66 m3/h and the concentration is 20%, the beneficiation effect is the best.
Keywords： centrifugal separator； kinetic analysis； numerical simulation； mass deposition rate
