中关铁矿上料系统原矿洗矿脱泥流程优化  

Optimization of Raw Ore Washing and Desliming Process in Feeding System of Zhongguan Iron Mine

作　　者：刘聪 任帅 任建辉 张庆博 张义坤 杜威 LIU Cong;REN Shuai;REN Jianhui;ZHANG Qingbo;ZHANG Yikun;DU Wei(Shahe Zhongguan Iron Mine Co.,Ltd.,Hebei Iron and Steel Group;Hebei Complex Iron Mine Low-carbon Intelligent and Efficient Mining Technology Innovation Center)

机构地区：[1]河北钢铁集团沙河中关铁矿有限公司,河北省邢台市054105 [2]河北省复杂铁矿低碳智能高效开采技术创新中心

出　　处：《现代矿业》2024年第6期125-128,133,共5页Modern Mining

摘　　要：中关铁矿为了消除原矿中超细粒级泥料对上料系统的影响,针对因原矿中细粒级物料较多,含泥量高,物料黏性大,水分大造成上料系统皮带通廊卫生量大、磨矿仓易堵塞等问题,采用将原矿进行大块干选、湿式筛分、细粒级预选脱泥、预选精矿脱水作业等工艺,抛除原矿中夹杂的8%的超细粒级泥料的方法进行了原矿洗矿脱泥流程优化的研究,通过流程优化,上料系统皮带通廊卫生量减小,消除了磨矿仓易堵塞的问题。为避免铁资源流失以及对后续磨选作业产生负面影响,还进行了大块干选挡板位置的确定,双层筛筛孔尺寸的确定,预选磁选机磁场强度的确定以及脱水筛筛孔尺寸的确定试验。此次流程优化取得了良好的效果,值得在同类矿山中推广。In order to eliminate the influence of ultra-fine grained mud in the raw ore on the feeding system,in view of the problems such as large amount of fine grained materials,high mud content,high vis⁃cosity and high moisture in the raw ore,the belt corridor of the feeding system is sanitary and the grinding bin is easy to be blocked,etc.,the process of bulk dry separation of the raw ore,wet screening,fine grained pre-desliming,pre-selected concentrate dewatering and so on is adopted to remove 8%of the ultra-fine grained mud in the raw ore.In order to avoid the loss of iron resources and have a negative impact on subse⁃quent grinding operations,experiments are also carried out to determine the position of large dry separation baffle,the size of double-layer screen,the field strength of pre-selected magnetic separator and the size of dewatering screen screen.This process optimization has achieved good results and is worth popularizing in similar mines.

关 键 词：上料系统 流程优化 原矿洗矿 湿式筛分 双层振动筛 磁选机 脱水筛 

分 类 号：TD951[矿业工程—选矿]