1、摘 要本设计为1.8Mt/a 的矿区型选煤厂，地处山西临汾市。该厂的工作制度为每年工作330天，每天16个小时，施行两班生产，一班检修的轮换制度。本厂入洗原煤来自西沟坑口和东胜坑口，两者的配比为6：4。主要产品为精煤、中煤和煤泥。其中，精煤要求灰分为7.518.00%，水分Mt11.00%。经过原料煤资料分析、可选性判断以及通过技术经济比较后，本选煤厂流程定为三产品重介旋流器浮选联合流程。原煤经筛分破碎的准备作业后，由无压三产品重介旋流器进行分选，煤泥浮选，尾煤压滤，并且达到洗水闭路循环。精煤、中煤用铁路运出，煤泥和矸石用汽车外运，在当地销售。该厂主要建筑有准备车间、主厂房、压滤车间、产品仓等
2、。其中，主厂房东西5跨，南北3跨。由于该厂为大型厂，所选设备处理量较大，其中三产品旋流器一段直径为1400mm，二段直径为1000mm，精煤脱介筛型号为ZKS3675，中煤为ZKS3060，精煤磁选机型号为2CTXN1230，中煤为2CTXN1030，离心机型号为WZL-1200，浮选机采用的是XJM-S12型。本厂总投资1.16亿元，吨煤投资64.46元，投资回收期半年，全员效率为49.59吨/工。除工艺流程外，本设计还对选煤厂的建筑结构、供电和电气、机修车间、铁路运输、劳动定员、生产成本及建厂初步投资概算做了系统的设计。设计时吸收了国内先进经验，全厂生产作业实现了集中控制、机械化和自动化。
3、关键词：设计； 重介质选煤； 浮选ABSTRACTThis is a coal processing plant design for the mining area type and its designed productivity capacity is 1.8Mt/a.Its located in linfen of shanxi Province.There are 330 workdays per year and 16 hours per workday in this plant which runs in shifts,two shifts are in charge of
4、producing and another is in charge of checking and repairing equipments.The raw coal comes form xigou pithed and dongsheng pithed,and between which the proportion is 60 percents to 40 persents.The main products are:clean coal,middling and tailings.Among them the clean coal require Ad is between 7.51
5、 persent and 8.00 persent,Mt11.00% at the same time.After analyzing the date of coal samples,estimating of the quality and comparation of economics and technique,the flowsheet of the plant is designed as three-product heavy medium-flotation united.All of the raw coal is separated in three-product-de
6、nse-medium cyclones after the preparation process,and then the fine coal is concentrated by flotation.The tailings from flotation are treated by pressure filtration so that fine coal can be recovered and washing water is recycled inside the plant.Among the products of the plant,the fine coal and mid
7、dle coal are carried by train.The gangue and the slime are carried by car,selling in the region.The main buildings of this plant include the prepare plant,the main plant,the pressure plant,and the produce camalig.In this plants,the main plant have 5 units in the east and west direction,and 3 units i
8、n the south and north direction.For the plant is a large one,the processing quantity of the machine is also large.The first diameter of the three-product-cyclone is 1400mm,the second diameter is 1000mm.The model number of fine coal is ZKS3675,of the middle coal is ZKS3060.The model number of magneti
9、c of fine coal is 2CTXN1230,of the middle coal is 2CTXN1030.The model number of leave the scheming is WZL-1200.The flotation is XJM-S12.The total investment per ton of the raw coal is 1.16 million yuan.The recovery period of investment is half year.The processing cost per ton of raw coal is 64.46 yu
10、an.The total efficiency is 49.59 tons per people.Besides the technological process, the project also include projects systematically about the supplying of the electricity, the machine repairing, the railway transportation, the number of worker, the budgetary estimate in economy, the budgetary estim
11、ate of the primary invest of building of the plan and room.Design absorbed the local advanced experience.The whole factory carried out the concentrated controc,mechanizationand automation.Keywords: design; dense-medium coal separation; flotation 目 录1 总论12 选煤工艺32.1煤质资料分析及可选性研究32.1.1煤质资料的审查及分析32.1.2两矿
12、原煤可选性研究及分组分级讨论152.2选煤工艺的初定和技术经济比较372.2.1 初步选定的方案分析372.2.2、方案的预测392.2.2、方案的技术经济比较462.3 选定流程的介绍及流程计算512.3.1 三产品重介煤泥重介浮选联合工艺选取的论述512.3.2设计工艺流程的整体描述及工艺流程图532.4流程计算552.4.1 数质量流程计算552.4.2 介质流程计算552.5 设备选型及计算672.5.1 选型与计算的原则和规定672.5.2 主要设备选型与计算682.6选煤工艺布置792.6.1 总平面布置792.6.2 原煤受煤、配煤792.6.3 准备车间792.6.4 主厂房8
13、02.6.5 产品仓822.6.6 煤泥压滤车间822.7 生产技术检查822.7.1检查的内容与项目822.7.2 技术检查取样设置852.7.3 检查室853 建筑物和构筑物863.1 概述863.2 气象及地震资料863.3 建筑物及构筑物设计863.3.1 建筑设计863.3.2 结构设计874 给水排水884.1给水水源884.2用水量和水压884.3给水系统884.4排水895 生产辅助设施905.1机电修理车间905.2介质制备车间915.3压缩空气供应916 电 气926.1 供配电926.1.1 电源及供电方式926.1.2 供配电系统926.1.3照明936.1.4防雷93
14、6.2集中控制与自动化936.2.1控制系统936.2.2 控制原则936.3通讯调度947 铁路运输958 采暖通风与药剂库968.1 概述968.2 采暖968.3 室外供热管道968.4 通风除尘968.5 药剂库979 工业场地总平面989.1 原始资料989.2 总平面布置989.2.1 布置原则989.2.2 场地功能区分989.2.3 总平面布置989.2.4 运输999.2.5 场地利用系数及绿化9910 技术经济10010.1 劳动定员10010.2选煤成本10210.2.1 产品销售收入10210.2.2 计算方法及依据10210.2.3 技术经济评价与指标10411 环境
15、保护10511.1 主要污染源及其控制措施10511.2厂区绿化106前 言毕业设计是对大学所学知识的总结和应用,通过对选煤厂的整体设计.将所学的基础和专业知识系统的应用于工程设计实践，从而系统的巩固所学的专业知识，提高知识分析和解决实际问题的能力，强化训练实际动手能力的一种方式。通过毕业设计，能够系统的把所学的理论知识和实际技能有机的结合起来，并加以运用到工程设计中，进一步提高运算、绘图、分析问题和解决问题的能力。理论联系实际才能创造出更大的成果。设计初期，为了增强对选煤厂的感性认识，充分了解现场的设备运行和安装情况、选煤厂生产管理情况，在学院的总体安排下,我们到神火新庄选煤厂进行了毕业实习。从中了解其生产、管理情况，收集有关资料，并通过现场工程技术人员、职工，了解了许多实践性的问题，为接下来的设计工作打下了坚实的基础。本次设计任务为设计年处理能力300万吨的矿区型炼焦煤选煤厂，主要入洗老窑坪矿和长嘴湾矿，以满足国民经济发展的需要。依据设计要求，利用两矿的生产大样报告，通过对资料的审核、校正、分析、综合以及原煤可选性的分析和评
