CLM2000×1600型高压辊磨机及其配套系统在马坑铁矿的应用  

Application of CLM2000×1600 High Pressure Grinding Roller and Auxiliary System in Makeng Iron Mine

作　　者：余祖芳 YU Zufang(Fujian Makeng Mining Co.,Ltd.)

机构地区：[1]福建马坑矿业股份有限公司,福建省龙岩市364000

出　　处：《现代矿业》2023年第2期229-231,共3页Modern Mining

摘　　要：马坑铁矿为了扩大产能,在原三段一闭路破碎与阶段磨矿弱磁选工序间增设了高压辊磨机及其配套系统。应用实践表明,新工艺系统的增设,通过放粗中、细碎产品粒度,提高了碎矿设备处理能力,选矿厂处理能力提高1.4倍;通过井下多出矿,多级预选,不仅每年可生产建筑砂、石料达200万t,而且保证了入磨矿石品位,大大提高了矿岩资源的综合利用率;磨前高效预选抛废,大大减少了进入磨选系统的矿量,单系列球磨系统的精矿产能由原53.52 t/h提高到100.47 t/h;高压辊磨机的选择性破碎,磨前粗粒湿式预先抛尾,改善了磁选效果,使铁精矿品位由改造前的63.68%提高到目前的65.42%;高压辊磨机在密闭空间内的层压粉碎不仅噪音低,而且扬尘少,改善了作业环境,减少了职业危害;铁精矿生产电耗下降4.6 kWh/t,钢球消耗下降246 g/t,节能减排成果突出。In order to expand the production capacity of Makeng Iron Mine,the high pressure grinding roller and auxiliary system were added between the original three stage crushing with single closed circuit stage and stage grinding-low intensity magnetic separation processes.The application practice showed that the addition of new process system improved the processing capacity of ore crushing equipment by coarsening the particle size of secondary crushing and third crushing products,and the treating capacity of concentrator was increased by 1.4 times and it could not only produce two million tons of construction sand and stone every year,but also ensure the grade of ore to be grinded,greatly improving the comprehensive utilization of ore resources by increasing the ore quantity of underground mining and multi-stage preconcentration.The high efficiency preconcentration and discarded tailings before grinding,which greatly reduced the ore quantity entering the grinding and concentration system,the concentrate capacity of the single series ball milling system had been increased from 53.52 t/h to 100.47 t/h.The selective crushing of high pressure grinding roller and wet pre-discarding the tailings of coarse particles before grinding had improved the magnetic separation effect,making the iron concentrate grade increase from 63.68%before transformation to 65.42%.The interlaminar crushing of the high pressure grinding roller in confined space not only has low noise,but also has less dust,which improves the working environment and reduces occupational hazards.The electricity consumption of iron concentrate production decreased by 4.6 kWh/t,and the steel ball consumption decreased by 246 g/t,and energy conservation and emission reduction achieved outstanding results.

关 键 词：高压辊磨机 增产提质 节能降耗 

分 类 号：TD453[矿业工程—矿山机电]