林西选煤厂精煤泥弧形筛气动式击打器的参数优化

Parameter optimization air.driven pumper at the sieve band for concentrate slime at Linxi Coal Preparation Plant

论述了精煤泥弧形筛用气动式击打器的结构原理及特点；根据林西选煤厂的煤泥粒度组成特性、粗精煤泥灰分指标及浮选入料粒度上限控制要求，将0．125mm作为分级临界粒度，用筛分效率作为评定指标，根据二组单因素逐项试验对气动武击打器的工作参数——击打间隔时间和击打压力进行优选，确定最佳击打间隔时间为10s，最佳击打压力为0．1MPa。

Discussed is the working principle and special feature of the air-driven pumper at the sieve band; based on the particle consist of Linxi slime, ash content of concentrate and top size of flotation feed required, taking 0. 125mm as the critical size, and screening efficiency as the evaluation index, the working parameter of air-driven pumper- time gap between pumping, force of pumping being optimized, determined that, the best time gap between pumping be 10s, the best pumping pressure be 0. 1MPa.