甘肃某镍矿黏结原因分析及管控措施  

Cause analysis and control measures of cohesiveness of a nickel ore in Gansu

作　　者：朱强[1] 张志贵[1] 何建元 陈星明[1] 傅开彬[1] ZHU Qiang;ZHANG Zhigui;HE Jianyuan;CHEN Xingming;FU Kaibin(School of Environm ent and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Longshou Mine,Jinchuan Group Co.,Ltd. Jinchang Gansu 737100,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]金川集团有限公司龙首矿,甘肃金昌737100

出　　处：《化工矿物与加工》2019年第11期13-15,39,共4页Industrial Minerals & Processing

摘　　要：针对甘肃某镍矿出现的矿石黏结问题,对矿石试样进行XRD分析,可知矿物中含有绿泥石等黏土矿物,黏土矿物具有遇水裂解、膨胀并黏结的特点,导致崩落的矿石出现黏结性;含水率试验结果表明,矿石含水率约为8%时黏结性最强,影响矿石黏结性的主要因素为矿石含水率、矿石成分及粉矿含量。为避免生产过程中因矿石黏结发生采场结拱、溜井堵塞等问题,提出了完善地表防排水工程、井下疏水排水、选择合理的爆破参数、控制入井物料等管控措施。To address the problem of ore adhesion in a nickel mine in Gansu,XRD analysis of the ore samples showed that the minerals containing clay minerals such as chlorite have the characteristics of water cracking,expansion and adhesion,leading to the adhesion of the ore in collapse.The result of water content test shows that the ore has the strongest viscosity when the water content of ore is about 8% and the main factors affecting the cohesion of ore are water content,ore composition and powder content.In order to avoid the problems of stope arch and orepass blockage and others in the production process,some control measures are put forward,such as improving surface waterproofing and drainage works,underground drainage,selecting reasonable blasting parameters and controlling the materials entering the well.

关 键 词：黏结性 粉矿 含水率 溜井堵塞 XRD 黏土矿物 

分 类 号：TD851[矿业工程—金属矿开采]