分级研磨工艺制高浓度油煤浆的试验研究

以内蒙古吉林郭勒地区的褐煤为试验原料,分别采用直接液化常规的油煤浆制备工艺和分级研磨制浆工艺进行成浆性试验,并对试验得到的油煤浆的粘温特性进行对比研究。结果表明:与常规制浆工艺相比,分级研磨制浆工艺可使油煤浆浓度提高4%,且煤浆的流变性和稳定性均有明显改善;油煤浆的粘度随温度的升高呈现出先降低后升高的趋势,分级研磨工艺制得的油煤浆发生明显溶胀作用的温度较常规工艺高20℃。 Taking the lignites of Jilin Gol of Inner Mongolia as samples,compared the formed slurry property which were prepared by traditional COM production process and grade grinding COM production process.The viscosity-temperature characteristics of COM were also compared.The results show that the classified grinding COM production process can improve the COM mass concentration by 4%,rheology and stability were also improved.Increasing the temperature,the apparent viscosity of COM first decreases,then increases.The swelling temperature of COM prepared by grade grindingprocess is 20 ℃ higher than that prepared by traditional COM production process