毕业论文-张家洼年产420万吨铁矿石新建选矿厂初步设计.doc

张家洼铁矿420万吨/年铁矿石新建选矿厂初步设计 摘 要 本次设计以张家洼铁矿选矿厂现场资料为依托，在满足设计任务书的基本要求下，以节能降耗、提高回收率的原则进行设计。为达到生产选择的辅助设施生产设备设计建设和的运营成本节约。设计的内容是厂工艺流程选择计算矿浆流程计算设备选型绘制其中，通过现场考察确定磨矿分级过程采用自磨和闭路球磨。磁选定采用段磁选。地形厂房布置采用布置，自流，节输送。关键词：设计，流程，计算 Abstract This design is based on the zhangs depression iron ore dressing plant site data, as well as meet the basic requirements to design to the principle of saving energy and reducing consumption, improve the recovery rate.In order to achieve production, chose the best auxiliary facilities and production equipment, in addition the design on the construction cost and operation cost of concentrator did to maximize savings.This design content is: mill plant process selection, calculation, pulp flow calculation, equipment selection, drawing, etc.Among them, grinding classification process by reference to the decision to adopt autogenous grinding and a closed circuit ball mill. Two section of magnetic separation, magnetic separation on the then weak magnetic strong magnetic joint after grinding, to select the maximum residual iron ore. Relative to the iron, the economic value of copper is higher, so the flotation process using one thick one fine two sweep to improve copper recovery rate, increase mill plant yield. Changs depression around the flat terrain, building layout using the ground is decorated, have a certain height difference, magnetic separation, gravity separation pulp gravity, save transportation costs. Keywords: design, process, calculate 目录 Abstract 1 目录 2 第一章 前序 9 1.1新建选厂的意义 9 1.2设计任务书 10 1.2.1设计目的 10 1.2.2设计题目 10 1.2.3设计内容 10 1.2.4主要技术指标和参数 11 第二章 鲁中冶金矿山公司的概况 12 2.1厂区交通、气候特点 12 2.2厂区状况及矿石性质 13 2.2.1小官庄矿体： 13 2.2.2张家洼矿体： 15 2.2.3港里矿体： 17 2.3选矿试验 17 2.3.1原矿分析： 18 2.3.2选矿试验结果 19 2.3.3选矿试验报告推荐意见 19 2.4厂区供电供水 19 2.4.1厂区供电 19 2.4.2厂区供水 21 第三章 方案设计及方案论证 22 3.1设计方案 22 3.2方案论证 23 第四章 干式磁预选流程计算和设备的选择 26 4.1干式磁预选流程的选择和计算 26 4.1.1计算干式磁预选工序小时处理量 27 4.1.2计算干式磁预选工序各产物的产率 27 4.1.3计算干式磁预选工序各产物的品位 28 4.1.4计算干式磁预选工序各产物的回收率 28 4.2干式磁预选设备的选择与计算 29 4.2.1干式预磁磁