摘要：
针对硫磺粉的易燃易爆特性,采用LNI-330A型氮气保护分级式冲击磨粉碎硫磺,并对其进行工业试验.结果表明:运行过程中,系统压力分布为-1.1～12.8 kPa时,系统氧含量可稳定在2％左右;调节分级机的转速为150～1 200 r/min,硫磺粉体成品产量为750～1 500 kg/h,粒径d50为15～25 μm,单位电耗小于83.601 kW h/t;转速大于450r/min时,达到橡胶用不溶性硫磺技术指标,即粒径为150 μm的筛余物质量分数≤1％;综合考虑工业要求,得到冲击磨制备硫磺粉体的最优分级机转速为450 r/min,成品产量为1375kg/h,150 μm筛余物质量分数为0.74‰粒径如为24.50 μm,单位电耗为65.77 kW·h/t.%In view of sulfur powder's characters of being flammable and explosive,sulfurs were grinded by using LNI-330A nitrogen protection classify-impact mill and industrial tests were carried out.The results show that during the operation,the system pressure distribution is from-1.1 kPa to 12.8 kPa,under which the oxygen content can be stabilized at about 2％.Adjusting the rotation speed of classifier from 150 to 1 200 r/min,the finished product yield of sulfur powder is 750--1 500 kg/h,the particle size ofd50 is in 15～25 μm,and the unit power consumption is less than 83.601 kW h/t.When the rotation speed is above 450 r/min,the technical specification of insoluble sulfur for rubber is reached,the mass fraction of 150 μm sieve residue is less than or equal to 1％.Considering the industry requirements,the optimum classifier speed of LNI-330A nitrogen protection classify-impact mill for preparation of sulfur powder is 450 r/min,the finished product yield is 1 375 kg/h,the mass fraction of 150 μm sieve residue is 0.74％,the particle size of d50 is 24.50 μm,and the unit power consumption is 65.77 kW h/t.
