摘要:
对云南某铅锌矿选矿厂进行清洁生产试验.首先,了解选矿厂各个工艺流程,并进行分析解剖,然后,利用监测等方式为外排废水的产出找出最初原因,再利用现场模拟,为废水产出及再次利用等找出相似的比例量和具体原因,其中,耗水量较大的工段主要发生在磨浮工段和重选工序,最后,利用以上工作成果,找出较优的解决方式,并对选矿厂进行清洁优化改造.最终,可为矿山年减少新水用量约50000 m3,年节约19800度电,年减少生产废水约38984.4 m3,减少COD排放0.27t/a,减少重金属Pb排放量6.24 kg,锌排放量48.24kg,镉排放量2.01 kg.可得出结论,在选矿工艺过程中将废水外排的量减少或消除比在末端治理废水要好,不仅经济可行,且节约材料、能耗Ⅲ.
Abstract:
A clean production experiment was conducted on a lead-zinc mine concentrator in Yunnan.First of all,to understand the processing plant of the various processes and analysis of anatomy;and then use monitoring and other means for the output of effluent effluent to identify the initial cause,reuse of on-site simulation for waste water output and re-use,etc.to find similar proportions and specific reasons,among them,the water consumption of the larger section is mainly in the grinding floating section and re-election process;finally,we use the above work results,to find the best solution,and to optimize the concentration of mineral cleaning plant.In the end,it can reduce the new water consumption by about 50000 m3 and save 19,800 kWh of electricity per year,the annual reduction of production wastewater is about 38984.4m3,the COD discharge is reduced by 0.27 t/a,the emission of heavy metal Pb is reduced by 6.24 kg,the emission of Zinc is 48.24 kg,the emission of cadmium is 2.01 kg.It can be concluded that reducing or eliminating the effluent effluent in the beneficiation process is better than the treatment of waste water at the end,it is not only economically feasible,but also can save material and energy [1].
下载: