120万吨矿井型选煤厂设计11

内蒙古科技大学毕业设计说明书（毕业论文）I1.2Mt/a矿井型选煤厂设计摘要摘要：本文主要叙述了1.2Mt/a矿井型选煤厂初步设计。入洗的原煤为四六两矿按6：4的比例混合后的煤。原煤的灰分为28.18%，是强粘结性的良好的炼焦配煤。设计任务要求精煤产品灰分小于9.0%,水分小于12%。精煤产品作为炼焦煤，中煤销售，矸石外运。根据原煤的性质及精煤质量要求等,在进行选煤方案比较的基础上，确定出最佳的工艺流程和产品结构。即该厂为重介质选煤厂。经过工艺流程计算、设备选型等，对主厂房和总平面进行布置。同时做出了该厂的经济技术分析。关键词：选煤厂设计重介质分选技术经济关键词:工艺流程,重介质分选,技术经济,选煤厂设计内蒙古科技大学毕业设计说明书（毕业论文）IIabstractThedesignof1.5Mt/apithedcoalpreparationplantabstract:Thethesismainlystatesthecourseofprimerdesigningonpithedcoalpreparationplantwhichproduces2.4milliontonsperyear.ThefeedingrawcoalwasAmixedwithBbytheproportion6：4.Theashcontentofrawcoalis28.18%,itsviscosityisstrong,itisagoodcoalforcokingmanufacture.Thedesigningtaskoftheashcontentofthecleancoalnomorethan9.0%anditsmoistureislessthan12%.Accordingtothenatureofrawcoalandthequalityrequestofcleancoal,onthebasisofthecomparisonofcoalpreparationplan,Itconfirmstheoptimaltechnologicalprocessandthestructureofproducts.That’stosay,itisthedensemediumseparationplant.Bythecalculationofprocessionandtheequipmentsselection.Itarrangesthemainworkshopandthetotalflat,thenanalysisontechnologyandeconomy.keywords:thecoalpreparationplantdesign，densemediumseparation，theanalysisontechnologyandeconomy，thecoalpreparationplantdesign内蒙古科技大学毕业设计说明书（毕业论文）III前言本次设计的选煤厂是一座年处理量为1.2万吨的矿井型选煤厂。遵循选煤厂有关规范，条例等国家各项方针政策。产品要求精煤灰分小于9%，做为炼焦用煤，中煤就地代销，矸石外运。其中精煤水分不超过12%，硫分不超过0.5%。设计力求达到工艺先进，技术合理，工程量省，投资少的效果。选煤工艺采用50——0mm原煤不分级，不脱泥进入无压三产品重介旋流器，煤泥采用浮选的联合流程。设备选型尽量考虑采用国内技术成熟，处理能力大，效率高的设备。工艺布置按单系统布置，充分考虑系统的灵活性，在满足工艺要求的前提下，简化生产环境，减少占地面积，在方便检修的前提下，尽量压缩主厂房建筑体积。实现洗水闭路循环，宜采用洗水净化再生系统。内蒙古科技大学毕业设计说明书IV目录摘要..........................................................................................................................Iabstract..................................................................................................................II前言.................................................................................................................III第一章设计概要...............................................................................................11.1项目背景.................................................................................................................11.2可行性研究概要.....................................................................................................11.2.1原煤资料分析.............................................................................................11.2.2选煤产品组成.............................................................................................11.2.3选煤厂设计生产能力.................................................................................11.2.4选煤厂位置与交通.....................................................................................11.2.5选煤方案的拟定.........................................................................................11.2.6工艺流程.....................................................................................................11.2.7设备选择.....................................................................................................2第二章设计前提条件及规模................................................................................................3第三章煤源及煤制特征........................................................................................................43.1煤源概况.................................................................................................................43.1.1原料煤供应情况.........................................................................................43.1.2主要煤源.....................................................................................................43.2煤质特征.................................................................................................................43.2.1煤的物理性质：............................................................................................43.2.2煤的化学性质................................................................................................43.3煤的可选性...............................................................................................................53.3.1资料分析........................................................................................................53.3.2浮沉资料分析：............................................................................................6第四章选煤工艺..................................................................................................................274.1选煤方法的确定.....................................................................................................274.1.1煤的可选性..................................................................................................27内蒙古科技大学毕业设计说明书V4.1.2入选方式......................................................................................................274.1.3选煤方法的比较.........................................................................................274.1.4工艺流程的确定.......................................................................................394.2工艺流程的简述.....................................................................................................404.2.1