铁矿石球磨机衬板干湿磨摩擦磨损机理研究

发布时间：2018-08-11 15:16

【摘要】：为掌握铁矿石球磨机筒体内衬板摩擦磨损机理,设计了铁矿石球磨机衬板—磨球摩擦磨损试验台,在此试验台上进行衬板与磨球间的摩擦磨损试验,以ZGMn13衬板试样为研究对象,探究干湿磨时不同磨损工况下衬板与磨球摩擦系数、摩擦接触温升及磨损率变化规律,结果表明:压力对摩擦系数、温升和磨损率的影响大于转速;磨球与衬板间的摩擦系数随载荷W增大而减小,有矿粉颗粒干磨摩擦系数达0.59,矿浆湿磨时仅为0.25;无矿粉干磨情况下温升较小,最高温升仅4.3℃,温升速率随磨程S的增长呈现先快后慢的趋势;磨损率随载荷W的增大而急剧增大,矿粉的加入会使表面犁沟变宽且分布无序,矿浆的加入阻隔了磨损,使表面纹理不明显。
[Abstract]:In order to understand the friction and wear mechanism of lining plate in the cylinder of iron ore ball mill, the friction and wear test bench of lining plate and grinding ball of iron ore ball mill was designed. The friction and wear test between lining plate and grinding ball was carried out on the test bed. The ZGMn13 liner sample was taken as the research object. The changes of friction coefficient, friction contact temperature rise and wear rate of liner and ball under different wear conditions were investigated. The results show that the influence of pressure on friction coefficient, temperature rise and wear rate is greater than rotational speed. The friction coefficient between grinding ball and lining plate decreases with the increase of load W, the friction coefficient of dry grinding with ore powder particles reaches 0.59, and that with slurry wet grinding is only 0.25, and the temperature rise is small in the case of dry grinding without ore powder, and the maximum temperature rise is only 4.3 鈩，

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