巴润矿业公司选矿厂年处理原矿能力为1100万吨..doc

摘 要 巴润矿业公司选矿厂年处理原矿能力为1100万吨，给矿粒度为1200-0毫米。 白云鄂博铁矿西矿矿石的组成矿物种类繁多，但大多含量甚微，对选矿意义不大，可供选矿回收的有用矿物以铁矿物为主，但其中又以磁铁矿居多，磁性率在21.29%左右，采用单一磁选工艺。 工艺流程介绍如下：破碎为三段一闭路。磨选为阶段磨矿阶段选别工艺流程，一段磨矿分级的溢流给入一段弱磁，精矿产物品位为52.50%、产率为44.50%、回收率为75.34%；弱磁一尾矿进入中磁进行选别，其精矿和弱磁一精矿混合进入二次分级设备进行二次分级，分级溢流进入弱磁二，弱磁二精矿产物品位为61.80%、产率为36%、回收率为71.40%。磁选精矿接着给入细筛，筛下品位为62.81%、产率为35 %、回收率为70.89%。筛下产物给入弱磁三，弱磁三精矿进入弱磁四得到最终精矿，品位为67.30%、产率为31.50%、回收率为68.36%。 关键词：磁选；阶段磨矿；阶段选别  ABSTRACT Baron in processing ore mining company concentrator capacity of 1,100 tons of ore particle size to the 1200-0 mm. West Ore Iron Ore mineral composition of a wide range, but most content little, little significance to the mineral processing, mineral processing for recovery of useful minerals iron mineral-based, but among which the majority of magnetite, magnetic rate In about 21.29%, using a single magnetic separation technology. Process described below: broken into three parts, a closed circuit. Selected stage grinding mill stage sorting process, a grinding and classification section of the overflow to enter the weak magnetic concentrate grade of 52.50% product yield was 44.50%, recovery was 75.34%; weak magnetic one into the magnetic mine for selection, the weak magnetic concentrate and a concentrate mixture into the second grade of secondary grading equipment, overflowing into the weak magnetic second grade, the product of weak magnetic concentrate grade II 61.80% yield was 36%, recovery was 71.40%. Magnetic concentrates were then given into the fine sieve, sieve the next grade of 62.81%, the yield was 35%, recovery was 70.89%. Sieve into the next product to the three weak magnetic and weak magnetic field weakening the three concentrate into the final four concentrate grade of 67.30%, the yield was 31.50%, recovery was 68.36%. Keywords:magnetic separator, stage-grinding, stage-concentration 目录 摘 要 I ABSTRACT II 第一章 概述 1 1.1 企业性质及隶属关系 1 1.2 建厂地区概况 1 1.3 建厂条件 2 1.3.1厂址选择 2 1.3.2资源条件 2 1.3.3 外部条件 3 1.4尾矿输送与处理 4 第二章 原矿性质 5 2