1、摘 要本设计是永夏4.50Mt/a矿区型炼焦煤选煤厂初步设计，本厂年工作制度330天，每天生产时间为16小时，两班生产，一班检修。通过对煤质资料进行分析、校正、计算，确定一矿煤和二矿煤混合入洗，且不需要进行预先机械类排矸。在此基础上，通过几个可能的选煤工艺流程，进行产品预测和技术、经济比较，选出最佳方案：一矿和二矿原煤13-50mm块煤浅槽主再洗-13-1mm末煤预先脱泥无压三产品重介旋流器-粗煤泥TBS-煤泥浮选联合工艺流程。粗精煤泥采用TBS-弧形筛-煤泥离心机回收。煤泥水系统采用直接浮选工艺。浮选精煤用加压过滤机脱水。浮选尾煤浓缩后压滤，煤泥厂内回收，实现洗水闭路循环，整个系统实现机械自
2、动化控制。原煤来自永夏矿区的两个矿井，分别是一矿和二矿原煤，一矿煤为肥煤，可选性为难选；二矿煤也为肥煤，但其可选性也为难选。所设计选煤厂主要产品有：精煤（灰分Ad=8.452%，水分Mt=9.06%）、中煤（灰分Ad=27.183%，水分Mt=12.80%）、煤泥（灰分Ad=44.862%，水分Mt=22.00%）和矸石（灰分Ad=72.762%，水分Mt=13.73%）。选煤厂主要经济技术指标如下：1） 总投资：27177.11万元；2） 劳动定员：241人；3） 全员效率：85吨/人；4） 生产工人效率：91.8吨/人；5） 吨煤投资：60.39元/吨；6） 回收期：0.17年。此外，本设
3、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。关键词: 选煤厂设计；浅槽；无压三产品旋流器；TBS；直接浮选 ABSTRACTThis design is a mining coal preparation plant scheme of YongXia Grorp with a capacity of 4.50Mt/a. The time of real production is 330 days one year, 16 hours one day. That is, there are 3 woking shifts per
4、 day in which two shifts for running and one for maintenance. The data of coal was analyzd ,emended and computed at first. Then it was decided that the raw coal from 1# mine and 2# mine would not be grouped and both of the mine would be graded. On these occasions the product forecast was carried on
5、several different processes. Finally the preferred plan was voted among these processes by comparing these economy and technology. The optimum process flow is both of the run of mine coal of 1# mine and 2# mine using shallow slot processing coal about size range 50mm to 13mm second times and three p
6、roduct heavy medium processing coal about size range 13mm to 0.5mm before desliming and TBS and forth-flotation. The clean coarse coal slime is reclaimed through TBS、and centrifuge. The slurry system is processed in forth-flotation. The clean coal is dewatered by pressure filter. The trailing proces
7、sed by filter frame press after concentration. The slime will be collected in the plant, wash water re-circled.The plant is designed with full automatic computer control system.The run of mine coal comes from two mines of Yong Xia , which are 1# mine and 2# mine , The run of mine coal of 1# mine is
8、fat coal , and the washability of the coal is difficult. The run of mine coal of 2# mine is fat coal too, and the washability of the coal is very difficult. The main products are, the clean coal with ash content 8.452% and water content 9.06%, the midding with ash content 27.183% and water content 1
9、2.80%, the tailing with ash content 44.862% and water content22.00%, and the gangue with ash content 72.762% and water content 13.73%.Main economic technique index of Yong Xia coal preparation plant is as follows: (1)The total investment: ￥ 271.77 million yuan;(2)Employees total amount: 241 people;
10、(3)Total efficiency:85 tons of a person;(4)Working efficiency: 91.8tons of a person;(5)The investment of per ton coal: ￥ 60.39 yuan;(6)Recover the period: 0.17 years.Besides, the project also includes the systematical design about the supplying of the electricity, the machine repairing, the railway
11、transportation, the number of worker, the operating cost, and the budgetary estimate of the primary invest of the plan.Keywords：coal preparation plant design;three product heavy medium;TBS; Forth-flotation目 录第一部分总论11.1选煤厂类型、厂型及厂址11.2工作制度11.3矿区及厂址概况11.3.1厂区位置11.3.2厂区地理概况11.3.3矿区其它资源及其经济概况21.4选煤工艺21.5
12、产品品种及用途21.6供水、供电21.6.1水源21.6.2电源31.6.3交通运输31.7主要经济技术指标4第一章 矿区概况及原料煤基地61.1矿区及选煤厂概况61.1.1厂区位置及交通概况61.1.2厂区地理概况61.2 原料煤基地7第二章 建设规模、厂址及工作制度82.1 设计规模及工作制度8第三章 选煤工艺83.1 煤质特征及可选性83.1.1 工业分析83.1.2 原煤筛分资料分析93.1.3 原煤浮沉资料分析113.1.4 两矿原煤可选性分析163.2 产品结构213.3 分选粒级、工艺流程及选煤方法223.3.1 分选粒级223.3.2 工艺流程253.3.3.工艺流程363.4
13、 选煤工艺流程的计算373.4.1数质量流程计算373.4.2介质流程计算383.4.3 工艺流程计算结果汇总403.5工艺设备的选型与计算463.5.1选型与计算的原则和规定463.5.2主要设备选型与计算463.6工艺布置及工艺系统技术操作说明543.6.1工艺布置原则543.6.2 总平面布置543.7 生产技术检查563.7.1检查的内容与项目563.7.2技术检查取样设置573.7.3检查室58第四章 给水排水594.1 水源594.2 用水量及水压594.3 给水系统594.4 消防594.5 排水系统60第五章 采暖、通风及供热615.1 供热采暖工程615.1.1设计主要技术参
14、数615.1.2 采暖615.1.3 热交换站615.1.4 工业场地供热管网615.2 通风除尘62第六章 电气636.1供配电636.1.1电源及供电方式636.1.2 设备容量、负荷计算及变压器选择636.1.3 负荷估算及变压器选择636.2照明防雷与接地646.3工艺系统设备控制646.3.1 生产控制系统64第七章 生产辅助设施657.1 空压机房657.2介质制备及储存657.3油脂库657.4 机电修理车间及材料库65第八章 建筑物与构筑物668.1 概述668.2 设计资料668.3 材料及构配件668.4 建筑物和构筑物设计67第九章 铁路装卸车站689.1概况689.2铁
15、路运输量689.3站场布置699.4铁路信号、通信及站场照明699.4.1 铁路信号699.4.2 铁路站场电力699.4.3 铁路站场通信70第十章 工业场地总平面7110.1概况7110.2设计简介7110.2.1 平面布置7110.2.2 竖向布置、道路及排水7110.2.3 工程数量71第十一章 环境保护7211.1概述7211.2 主要环境影响及其控制措施7411.3厂区绿化7811.4环境管理及环境监测7811.5 存在问题与建议78第十二章 职业安全与工业卫生7912.1设计依据及标准7912.2职业安全7912.3工业卫生8012.4安全机构设置80第十三章 消防8113.1设计依据及标准8113.2建筑物及构筑物防火8113.3消防给水8113.4电气防火8213.5工业场地消防布置8313.6消防组织及火灾扑救措施83第十四章 节能、减排8414.1 概述84
