摘要:
毛坪铅锌矿矿石矿物组成复杂,有用矿物嵌布粒度极不均匀、交代结构突出,且含有易泥化粘土矿物,为复杂难选矿.针对矿石的工艺矿物学特性及选矿试验,从选矿工艺流程的确定、各工序的主要设计内容及关键设备的选型等方面,全面介绍了毛坪铅锌矿2000 t/d选矿厂的多碎少磨、阶段磨矿阶段选别、选矿废水处理回用等的设计要点.针对选矿厂生产调试和生产实践中发现的问题,在不改变选矿主体工艺流程及更换关键设备的前提下,通过选矿药剂制度、浮选机及附属设施、选矿废水处理与回用、石灰乳制备与输送等的改进完善,使选矿工艺流程变得更加合理及高效,并适应了矿石性质改变后的选矿需要及取得了关键选矿指标的提升及稳定,为其它选矿厂的设计及生产实践提供了借鉴经验.
Abstract:
The lead-zinc ore from Maoping mine is featured by the complicated minerals composition,uneven distribution of the grain size,metasomatic texture and the large amount of easily sliming gangue minerals,which make it hard to beneficiate.Base on the results of process mineralogy and beneficiability research,this paper comprehensively introduced design principles of the flow sheet and the beneficiation equipment of this 2000 t/d lead-zinc concentrating mill,specially,the more crushing and less grinding,stage grinding-stage dressing,wastewater treatment and reuse technologies were fully introduced.To solve the technical problems from industrial practices,the flotation reagent scheme,the parameters of flotation machine and the preparation and delivery of lime milk were changed and optimized;wastewater treatment and reuse also were carried out.Those technical innovations make the mineral processing flowsheet more reasonable and efficient,and more suitable to the ore properties,and it has achieved better separate performance.It provides precious experience for the design and industrial practice of other concentration plants.
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