中国钨业
中國鎢業
중국오업
CHINA TUNGSTEN INDUSTRY
2015年
3期
6-9
,共4页
低品位%资源回收%二次崩矿%井下格筛分选
低品位%資源迴收%二次崩礦%井下格篩分選
저품위%자원회수%이차붕광%정하격사분선
low-grade%recycling%secondary collapse ore%underground cell screening option
梅子窝钨矿是一个已开采90多年的老钨矿，其高品位的富矿已开采完毕。为提高矿产资源利用率，矿山进行了低品位资源回收的探索，该低品位脉矿资源因具有矿脉薄、断层多、围岩较破碎及不稳固，导致开采难度大和成本高。研究对传统的浅孔留矿法进行了技术改造，在采场两端各布置一个脉石漏斗，崩矿时采用二次崩矿方法，先崩废石，再崩脉石，把脉石运到脉石漏斗放出，脉石和废石分开出矿，并对井下格筛实行分选，从而达到降低贫化率和损失率，提高开采回采率，从而实现了将次边际经济资源变成经济资源的目标。
梅子窩鎢礦是一箇已開採90多年的老鎢礦，其高品位的富礦已開採完畢。為提高礦產資源利用率，礦山進行瞭低品位資源迴收的探索，該低品位脈礦資源因具有礦脈薄、斷層多、圍巖較破碎及不穩固，導緻開採難度大和成本高。研究對傳統的淺孔留礦法進行瞭技術改造，在採場兩耑各佈置一箇脈石漏鬥，崩礦時採用二次崩礦方法，先崩廢石，再崩脈石，把脈石運到脈石漏鬥放齣，脈石和廢石分開齣礦，併對井下格篩實行分選，從而達到降低貧化率和損失率，提高開採迴採率，從而實現瞭將次邊際經濟資源變成經濟資源的目標。
매자와오광시일개이개채90다년적로오광，기고품위적부광이개채완필。위제고광산자원이용솔，광산진행료저품위자원회수적탐색，해저품위맥광자원인구유광맥박、단층다、위암교파쇄급불은고，도치개채난도대화성본고。연구대전통적천공류광법진행료기술개조，재채장량단각포치일개맥석루두，붕광시채용이차붕광방법，선붕폐석，재붕맥석，파맥석운도맥석루두방출，맥석화폐석분개출광，병대정하격사실행분선，종이체도강저빈화솔화손실솔，제고개채회채솔，종이실현료장차변제경제자원변성경제자원적목표。
The high-grade bonanza Meiziwo Tungsten Ore has been depleted after 90 years of mining. This paper studied the low-grade (less than 0.12%·m) resource recovery to improve utilization rate of mineral resources. The characteristics of the low grade vein mineral resources, such as thin veins, diverse faults, broken and unstable wall rocks contributes to the difficult and costly mining. The traditional shallow hole shrinkage method had been transformed by placing a gangue funnel at both ends of stope. Secondary caving method was applied to cave waste rocks and gangues successively by separating gangues and waste rocks. The target of transforming marginal economic resources into economic resources had been achieved by lowering the dilution rate and loss rate and improving mining recovery rate.
