1500t/d金亭岭金矿选矿厂工艺初步设计专业:矿物加工工程姓名:指导教师:摘要：本次设计参考金亭岭金矿2000t/d选矿厂的现场生产情况，初步设计了金亭岭金矿选矿厂工艺流程、设备选型、厂房配置等。根据设计任务书和现场生产指标，本次设计采用如下主要工艺流程：三段两闭路的破碎筛分流程；一段一闭路的磨矿分级流程；一次粗选二次扫选一次精选的浮选流程；金精矿采用浓缩压滤的脱水流程。本次设计选矿厂的规模为1500t/d，给矿最大粒度500mm，原矿品位为1.5g/t，原矿密度为2.8t/m3。得到的金精矿的品位为40g/t，回收率为94.1%。车间配置如下：粗碎段的鄂式破碎机配置在原矿矿井之下，圆锥破碎机、双层圆振动筛配置在一起。磨矿分级流程，球磨机与旋流器配合。浮选流程采用充气搅拌式浮选机，闭路配置，中矿返回前一个作业，设备按照选别作业顺序依次布置。整个选矿厂设备型号适中、稳定高效、配置紧凑并且基建投资少。设计的选别流程具有稳定、易操作、选矿回收率高的优点。同时，重视环境保护和资源保护，合理利用资源。关键词：选矿厂初步设计；破碎；磨矿；浮选；厂房配置PrimaryDesignof1500t/dMillofJintinglingGoldMineSpecialty:MineralProcessingEngineeringName:HaiyingLiuTutor:HongguanYuXueqiCuiAbstract：Accordingtothe2000t/dmillofJintinglinggoldmine,thedressingflowsheet,equipmentselection,plantconfigurationofJintinglinggoldminemillisprimarilydesigned.Underthedesigntaskandon-the-spotproductionindicators,thisdesignadoptsthreesectstwoclosedcircuitintheflowsheetofcomminution,onesectoneclosedcircuitingrindingandclassification,oneroughtwoscavengerandonecleaninflotationcircuit.Theconcentratedirectlydewatersbyfiltersandthickener.Themill’sscaleis1500tonsperdayandthemaximalore-feedsizeis500mm.Ore-feedgradeis1.5gramperton.Theoredensityis2.8tonpercubicmeter.Thefineconcentrategradeis40gramperton,recoveryis94.1percent.Workshopconfigurationsareasfollows:thejawcrusherisarrangedundertherun-of-mineoremine,conecrusherandshakingscreenarearrangedinthesameworkshop.Intheprocessofgrindingandclassification，thegrindingmillandtheclassifiersarearrangedtogether.Theflotationflowsheetchoicespneumaticagitationmachineswiththecloseflotationcircuits.Themiddlingsreturntothepriorflotationprocess.Theflotationseparatorsarearrangedasflowsheet.Inthisprimarydesign,theequipmentmodelsselectedaremoderate,stableandefficient,compactconfigurationandlessinvestmentininfrastructure.Dressingflowsheetisstableandeasytooperatewiththeadvantagesofhighrecovery.Atthesametime,thisprimarydesignpaysattentiontoresourceandenvironmentalprotection,rationallyutilizingmineralresources.Keywords:primarydesignofthemill；comminution；grinding；flotation；plantconfiguration目录1文献综述.....................................................11.1引言.....................................................11.2金矿选别现状及新进展.....................................21.2.1金矿选别设备的发展................................21.2.2金矿选矿工艺流程新进展............................42选矿厂设计基础资料概述.......................................82.1设计依据及设计原则.......................................82.2企业现状.................................................92.2.1企业现状..........................................92.2.2原有工艺流程及设备...............................103设计工艺流程及指标..........................................113.1工艺流程................................................113.2设计指标................................................123.3设计流程................................................134流程计算..............
