矿冶工程
礦冶工程
광야공정
2014年
5期
58-61
,共4页
刘安平%吴彩斌%严刘学%石贵明%邹春林
劉安平%吳綵斌%嚴劉學%石貴明%鄒春林
류안평%오채빈%엄류학%석귀명%추춘림
精确化磨矿%分级溢流产品质量%节能降耗%磨矿条件
精確化磨礦%分級溢流產品質量%節能降耗%磨礦條件
정학화마광%분급일유산품질량%절능강모%마광조건
precise grinding%quality of classifier overflow%energy conservation and consumption reduction%milling condition
为了提高磨矿均匀性和降低磨矿过程成本,梅山铁矿选矿厂在四系列进行了精确化磨矿工业试验。结果表明,与应用前相比,二段分级溢流产品中平均粒度加粗10%;合格粒级含量提高1.82个百分点,提高幅度为2.35%;-10μm粒级含量降低了1.05个百分点,降低幅度为6.91%。磁选尾矿中-10μm粒级含量下降15.56个百分点,降低幅度25.52%;平均粒度加粗0.06 mm,加粗幅度150%。同时磨机功耗下降1.68 kWh/t,钢球单耗下降0.1 kg/t,磨机噪音下降2~6 dB,磨矿矿浆温度降低0.5~2℃,一段磨磨机衬板使用寿命估计可延长6个月,二段磨磨机衬板使用寿命可延长1年以上,折合降低磨矿成本1.70元/t,取得了非常显著的节能降耗效果。四系列研究成果已经在其他系列同类型磨矿作业中推广应用。
為瞭提高磨礦均勻性和降低磨礦過程成本,梅山鐵礦選礦廠在四繫列進行瞭精確化磨礦工業試驗。結果錶明,與應用前相比,二段分級溢流產品中平均粒度加粗10%;閤格粒級含量提高1.82箇百分點,提高幅度為2.35%;-10μm粒級含量降低瞭1.05箇百分點,降低幅度為6.91%。磁選尾礦中-10μm粒級含量下降15.56箇百分點,降低幅度25.52%;平均粒度加粗0.06 mm,加粗幅度150%。同時磨機功耗下降1.68 kWh/t,鋼毬單耗下降0.1 kg/t,磨機譟音下降2~6 dB,磨礦礦漿溫度降低0.5~2℃,一段磨磨機襯闆使用壽命估計可延長6箇月,二段磨磨機襯闆使用壽命可延長1年以上,摺閤降低磨礦成本1.70元/t,取得瞭非常顯著的節能降耗效果。四繫列研究成果已經在其他繫列同類型磨礦作業中推廣應用。
위료제고마광균균성화강저마광과정성본,매산철광선광엄재사계렬진행료정학화마광공업시험。결과표명,여응용전상비,이단분급일유산품중평균립도가조10%;합격립급함량제고1.82개백분점,제고폭도위2.35%;-10μm립급함량강저료1.05개백분점,강저폭도위6.91%。자선미광중-10μm립급함량하강15.56개백분점,강저폭도25.52%;평균립도가조0.06 mm,가조폭도150%。동시마궤공모하강1.68 kWh/t,강구단모하강0.1 kg/t,마궤조음하강2~6 dB,마광광장온도강저0.5~2℃,일단마마궤츤판사용수명고계가연장6개월,이단마마궤츤판사용수명가연장1년이상,절합강저마광성본1.70원/t,취득료비상현저적절능강모효과。사계렬연구성과이경재기타계렬동류형마광작업중추엄응용。
In order to obtain homogeneous grinding fineness and lower grinding cost, commercial tests on precise grinding were conducted for №4 product line of concentrator in Meishan Iron Mine. Results showed that after optimization, the average fineness of the overflow from the second stage of classification increased by 10%. The rate of particles with qualified size increased 1.82 percentage points, a 2.35% rise, while the rate of particles at the grinding fineness of -10μm decreased 1.05 percentage points, a fall of 6.91%. As for the tailings from magnetic separation, the rate of particle size of -10 μm range decreased 15.56 percentage points, a fall of 25.52%, and an average increase of 0?06 mm in particle size, a 150% rise. Meanwhile, the power consumption dropped 1.68 kWh/t, the ball consumption dropped 0. 1 kg/t, the processing noise dropped by 2~6 dB and the pulp temperature decreased by 0. 5~2 ℃. Consequently, the service life of mill liners for the first stage and the second stage of milling can be extended for around six months and over a year, respectively, equivalent to a 1.70 RMB/t reduction in cost. This research results have been applied into milling operations of other series.