煤泥制浆中粗、细粒子在煤浆中的作用研究

通过实验室试验得出:粗粒子难以成浆,即使在较高浓度下,其粘度远远超于应用要求,且其稳定性、流动性极差,不能满足应用要求;组成煤浆的粒子平均粒径越大,粒度分布越窄,其成浆性越差。用细粒子的煤泥制浆,组成煤浆的粒子的平均粒径越小,粒度分布越窄,其粘度值越高;细粒子在煤浆中的作用主要是提高煤浆的粘度。 The conclusion form lab test is as follows: 1.It is very difficult for making CWM from coarse coal although with high concentration.The requirements of actual using for CWM can not be met in viscosity,stability,and liquidity.The bigger of particle,the worse for pulping feature since small range of particle distribution.2.the smaller of fine coal since with wide particle distribution,the higher viscosity,and 3.the function of fine coal is for increasing viscosity of CWM