论文编号:CKZS005 字数:13536,页数:54 附CAD图
摘 要
根据对河北省唐山市马兰庄铁矿矿石性质的研究结果以及对类似选厂的考察，设计马兰庄铁矿选矿厂。该设计为一次建厂，建厂规模为年处理量60万吨原矿石，根据地形考察报告设计为依山坡建厂，破碎位于同一等高线，主厂房依山坡地势而建。矿石为中等硬度，原矿最大粒度为500mm，含水量为2%，含泥量小于1%。采矿废石混入10%。密度3.26吨/立方米，松散度1.5。采用三段一闭路破碎流程。为了达到更好的选矿效果，采用阶段磨矿阶段选别的流程。原矿品位30%，经过四次磁选后精矿品位可达到66%，回收率为85%，产率为38.64%。总投资为3430.76万元，预计投资回收期为0.22年。
关键词：马兰庄铁矿，磨矿，磁选
Abstract
According to the inspection of Malanzhuang iron ore in Tangshan, Hebei Province, nd the nature of the findings of similar election plant inspection, design Malanzhuang iron ore concentrator. The design for a construction, construction of the largest of the handling capacity of 600,000 tons of ore, according to topography inspection report is designed to build factories on the slope, broken in the same contour, the main plant built by a mountain slope potential. Ore for the middle hardness, the largest ore for the size 500 mm, the water content of 3 percent, with mud in less than one percent. Mining waste rock mixed with 10 percent. Density of 3.26 t / cubic meters, 1.5 degrees loose. Using a three-house broken processes. In order to achieve better results processing, grinding stage by stage another election process. Ore grade of 30 percent, after four magnetic separation concentrate grade can be achieved after the 66 percent response rate was 85 percent, the yield was 38.64 percent. This design is expected to total investment of about 38.3533 million yuan, the payback period is 1.12 years.
Keyword: The iron ore of Malanzhuang , Grinding, Magnetic, Process, The building of factories目录
摘 要I
AbstractII
1 引言1
2 矿石性质的分析2
3 选矿工艺流程的选择与计算及工作制度生产能力的确定3
3.1确定工作制度3
3.2破碎筛分流程的选择与计算3
3.2.1计算破碎车间生产能力3
3.2.2计算总破碎比及分配各段破碎比3
3.2.3计算各段产物的最大粒度4
3.2.4计算各段破碎机的排矿口宽度4
3.2.5确定筛子的筛孔尺寸和筛分效率5
3.2.6计算各段产物的矿量和产率5
3.2.7破碎筛分设备的选择与计算5
3.2.7.1粗碎设备5
3.2.7.2中碎设备8
3.2.7.3细碎预先及检查筛分设备9
3.2.7.4细碎设备11
3.3磨矿选别流程的选择计算13
3.3.1数质量流程计算13
3.3.1.1磁滑轮的计算15
3.3.1.2计算第一段磨矿的矿量、产率15
3.3.1.3选别流程的计算15
3.3.2矿浆流程的计算20
3.4磨矿选别主要设备的选择计算26
3.4.1磁滑轮的选择与计算26
3.4.2一段磨矿设备的选择计算26
3.4.3分级机的选择计算28
3.4.4二段磨矿设备的选择计算29
3.4.5细筛的选择计算30
3.4.6磁选设备的选择31
4 主要辅助设备的选择与计算32
4.1原矿仓的选择计算32
4.2原矿仓下给矿机的选择计算33
4.3粉矿仓的选择计算33
4.4粉矿仓下给矿机的选择34
4.5起重设备的选择计算34
4.6过滤机的选择计算34
4.7真空泵的选择35
4.8砂泵的选择35
4.9胶带运输机的选择与计算35
5 生产过程概述36
6 选矿厂厂址选择和设备配置38
6.1选矿厂厂址的选择38
6.2选矿厂车间布置和设备配置的特点38
7 矿山环保与安全39
7.1环境保护39
7.2安全39
8 选矿厂劳动岗位定员40
9 选矿厂的技术经济分析41
9.1选厂工艺投资概算41
9.1.1设备概算价值41
9.1.2工艺金属结构概算价值42
9.1.3工艺管道概算价值42
9.2选矿厂基建投资概算43
9.2.1厂各部门投资43
9.3选矿技术经济指标计算43
9.3.1精矿设计成本的计算43
9.3.2选矿加工费的计算44
9.4经济效果评定44
9.4.1选矿加工费的计算44
9.4.2销售利润45
9.4.3经济分析（静态法）45
10 结论47
10.1结论47
参考文献48
谢辞49
年处理60万吨铁选厂毕业设计......