型雾化-跌落式煤浆预处理器在临涣选煤厂的应用 -

介绍了FCA型雾化-跌落式煤浆预处理器的结构及工作原理。通过工业性试验,分析了FCA型雾化-跌落式煤浆预处理器的浮选药剂量与风压、雾滴直径的关系,对比了雾化-跌落式煤浆预处理器与煤浆准备器对应浮选机的各项浮选指标。结果表明:在相同风压下,雾滴直径并未随浮选药剂添加量的增加而明显增大,表明在较宽范围内风动喷射式雾化器具有良好的适用性,临涣选煤厂入选煤泥适宜采用的风压为0.08 MPa。雾化-跌落式煤浆预处理器与煤浆准备器的煤泥浮选分选效果没有显著性差异,但雾化-跌落式煤浆预处理器可节省药剂23.96%。最后对选煤厂进行了经济效益分析,FCA型雾化-跌落式煤浆预处理器在临涣选煤厂得以成功应用,具有节能降耗、不需外加动力、维护量小等优点。与煤浆准备器相比,FCA型雾化-跌落式煤浆预处理器每年节省药剂费用306.33万元,节电12.82万kWh。 Introduce the structure and working principle of FCA atomization-decline pulp preprocessor.Through proximate analysis of coal,analyze the relationship between the dosage of flotation agent and wind pressure,diameter of the fog drop.Compare the flotation indices of the preprocessor with those of conventional pulp preparation devices.The results show that,keeping the wind pressure unchanged,the diameter of the fog drop doesn't increase obviously with the increase of flotation agent,which means the pneumatic jet type atomizer has good serviceability in a wide range of wind pressure.The proper wind pressure for Linhuan coal preparation plant is 0.08 MPa.There are no remarkable differences between these two pulp preprocessors.But the FCA could save flotation agent by 23.96 percent,which also has some considerable advantages such as reducing energy consumption and pollutant emission,no need of additional motive force,less maintenance and the like.Adopting the FCA,the coal preparation plant would save 3.0633 million yuan on flotation agent expenses,128.2 thousand kWh on electricity bills