压缩空气喷吹法制备金属锌粉的生产实践研究

Study on the Production Practice of Preparing Metallic Zinc Powder by Compressed Air Injection Method

针对某冶炼公司投产初期空气喷吹法制备的金属锌粉产能和粒度无法满足生产需求的问题,分别探究锌液温度、喷吹压力、石英管内径、喷嘴齿数、喷嘴加工和安装精度对金属锌粉产能和粒度的影响。结果表明,在锌液温度590~600℃、喷吹压力0.6~0.65 MPa、石英管内径12 mm、内喷嘴30齿、外喷嘴40齿的工艺条件下,锌粉产能由20 t/d提升至28~30 t/d,-150目粒度锌粉产率由60%提升至80%以上。

As the production capacity and particle size of metal zinc powder prepared by air injection method at the initial stage of production in a smelting company cannot meet the production demand,the effects of zinc liquid temperature,injection pressure,inner diameter of quartz tube,nozzle tooth number,nozzle processing and installation accuracy on the production capacity and particle size of metal zinc powder were explored.The results showed that under the process conditions of zinc liquid temperature 590-600℃,injection pressure 0.6-0.65 MPa,quartz tube diameter 12 mm,inner nozzle 30 teeth and outer nozzle 40 teeth,the production capacity of zinc powder increased from 20 t/d to 28-30 t/d,and the yield of-150 mesh zinc powder increases from 60%to more than 80%.