摘要
Abstract
To address the long-standing issues of low processing capacity and mismatched feed size distribution in the photoelectric ore sorting system at the waste rock regeneration plant of a polymetallic mine in Dulong,Yunnan,systematic research was conducted on the coupling mechanism between feed size and separation efficiency.By establishing a"three-stage screening control-dynamic feedback"regulation system and implementing a process optimization plan centered on"lower size limit adjustment,"the lower size limits for both coarse and fine-particle photoelectric sorting systems were progressively narrowed.This expanded the effective sorting range and enhanced system capacity.Specifically,the lower limit for the coarse-particle system was extended from+60 mm to+45 mm,while that of the fine-particle system was simultaneously lowered to+16 mm.Coupled with the conversion of the crushing and pre-screening process from dry to wet screening,the low-capacity operation dilemma was successfully resolved.Production data show that after optimization,the overall operational capacity increased from an initial 25％～27％to 32％,and further rose to 40％～44％after subsequent system improvements.With synergistic optimization of sorting parameters and models,zinc recovery remained stable above 75％.The study demonstrates that reasonably widening the effective particle size range can significantly improve separation efficiency,particularly in complex systems with high ore variability.These results provide a replicable technical pathway for similar mines to achieve"low-consumption,high-efficiency"preconcentration.关键词
光电选矿/粒度优化/筛分调控/智能分选/资源回收/负荷提升Key words
photoelectric ore sorting/particle size optimization/screening regulation/intelligent sorting/resource recovery/capacity improvement分类
矿业与冶金
