选煤厂初步设计说明书

2008届本科毕业设计（论文）I摘要中国拥有丰富的煤炭资源,在一次能源生产和消费中煤炭占70%，从中长期来看，煤炭仍将是我国主要的能源。煤炭是不可再生能源而且我国大部分煤炭是难选煤或极难选煤，为实现煤炭高效利用，需采用高效的洗选加工工艺，合理的选煤厂总体设计，先进可靠的配套装备，及科学的管理方法相结合的策略。本设计以@@##矿原煤资料为基础，通过对原煤资料的分析，设计出合理的工艺流程，通过计算确定适宜的设备，再对车间进行恰当的布置。最后，对工业场地进行了总体规划，使各个生产环节间与辅助设施间构成了一个有机的整体。此外，本设计还对给排水、采暖通风、技术分析等方面进行了阐述。本设计采用以无压给料三产品重介质旋流器为主要分选设备的不脱泥、不分级重介质选煤工艺,是具有国际先进水平的选煤技术，粗煤泥（0.25-0.5mm）高频筛回收，细煤泥（-0.25mm）浮选床分选；适合该矿极难选煤的分选，工艺流程简单，易于管理，设计以简单高效重介选煤工艺为指导思路。关键词：选煤无压给料三产品重介质旋流器浮选2008届本科毕业设计（论文）IIABSTRACTChinaisabundantincoalresources,Coalaccountsfor70%inproductionandconsumptionoftheprimaryenergyandwillstillbethemainenergysourceforthenationinamediumorlongterm.It’snon-renewableenergy.FormostofChina'scoal,theseparationisdifficultorextremelydifficult.Toachieveefficientuseofcoal,weshouldusethestrategyofbeingefficientwashingprocessingtechnologyandreasonablepreparationplantdesign,advancedandreliableaccessoryequipmentwithscientificmanagementmethods.Thedesign-JiyangMineinShandongprovincesourcebookbasedontherawcoaldataanalysis,designarationalprocess,Bycalculatingandselectingsuitableequipment,andworkshopsontheproperlayout.Finally,theindustrialsitewheretheoverallplanning,Varioussegmentsofproductionandproductionprocessesandauxiliaryfacilitiesbetweenconstitutesanorganicwhole.IInaddition,thedesignalsoincludeswatersupplyanddrainage,heatingventilation,technicalanalysisandsoonThisdesignusesthenon-pressurizedfeedingthree-productmediumcycloneasthemainsortingequipmentwhichdoesnotdeslimingorheavy-mediumgradecoalpreparationprocessthatisaninternationallyadvancedlevelinthecoalcleaningtechnology.,combinedwithCrudeslime(0.25-0.5mm)highfrequencyscreenrecovery,smallslime(-0.25mm)flotationcolumnseparation.Theprocess,whichisaplicableofthecoalofthismine,issimpleandeasytomanage.Useingthesimpleandhighly-efficientdensemediumprocessasthedirection.Keyword:coalpreparation,thenon-pressurizedfeedingthree-productmediumcycloneflotation2008届本科毕业设计（论文）III目录摘要................................................................IABSTRACT...........................................................II1概述..............................................................11.1设计任务、目的和要求............................................11.1.1设计任务......................................................11.1.2设计目的......................................................11.1.3设计要求......................................................11.2矿区交通地理....................................................11.2.1位置和交通条件................................................11.2.2地形地貌......................................................11.2.3气象..........................................................21.2.4地震..........................................................21.3厂型、厂址及工作制度............................................21.3.1选煤厂类型....................................................21.3.2厂址选择......................................................21.3.3选煤厂工作制度................................................21.3.4、选煤厂生产能力...............................................21.3.5、服务年限.....................................................22选煤工艺.........................................................32.1煤质资料分析...................................................32.1.1煤的化学分析..................................................32.1.2原煤筛分、浮沉资料及分析......................................42.2选煤工艺........................................................82.2.1工艺概述......................................................82.2.2原则工艺流程.................................................112.2.3工艺流程的特点...............................................122008届本科毕业设计（论文）IV2.3原煤煤数质量的计算............................................132.4产品设计平衡表的计算...........................................132.5介质流程计算...................................................162.5.1工作介质性质的确定计算.......................................162.5.2重介旋流器悬浮液的计算.......................................202.5.3精煤悬浮液的计算.............................................232.5.4中煤悬浮液的计算.............................................272.5.5矸石悬浮液的计算.............................................302.5.6精煤磁选作业悬浮液的计算.....................................332.5.7中煤和矸石磁选作业悬浮液的计算...............................372.6选后产品数质量计算.............................................402.6.1无压三产品重介旋流器.........................................402.6.2脱介过程产品数质量计算.......................................412.6.3精煤泥水数质量计算...........................................42水力分级作业的计算.................................................42高频筛作业的计算...................................................432.6.4浮选作业数质量计算...........................................442.7选后产品水量计算...............................................46高频筛分水量的计算:................................................462.8工艺总平衡表的编制.............................................47第三章设备选型...................................................503.1主要工艺设备选型原则...........................................503.2、选煤厂各环节不均衡系数：......................................503.3筛分设备的选型计算.............................................503.3.1预先筛分设备的选型计算..............