摘要
河南某银精矿的伴生金属铅品位平均约7%,未达到计价标准。为提高银精矿综合价值,对银精矿产品开展了水力旋流器分级试验,考察了水力旋流器锥角、沉砂口直径、角锥比等参数对银精矿分级富集的影响。结果表明:采用100型水力旋流器,在锥角60°、给矿压力0.2MPa、给矿浓度(质量分数)13.89%、溢流管直径22mm、沉砂口直径12mm条件下,可从银精矿中分离出产率49.25%、银品位6316.29g/t、银金属回收率79.06%、铅品位12.39%、铅金属回收率79.45%的高铅银精矿和银品位1623.36g/t的低铅银精矿。高、低铅银精矿双产品方案优于单一银精矿方案,银精矿产品经济价值可提升687.96元/t。
A kind of silver concentrate in Henan Province has the associated lead therein with an average grade around 7%,lower than the grade for pricing.A classification test was conducted with a hydrocyclone for the silver concentrate,and effects of parameters,including cone angle,underflow orifice diameter,and angle-cone ratio,on the classification and concentration of silver concentrate were explored.It is found that by adopting a 100 model hydrocyclone with cone angle of 60°,feed in a mass fraction of 13.89%to be fed at the pressure of 0.2 MPa,overflow pipe of 22 mm in diameter,and the underflow orifice of 12 mm in diameter,a high-lead silver concentrate grading 6316.29 g/t Ag and 12.39%Pb can be obtained at corresponding recoveries of 79.06%Ag and 79.45%Pb,with a yield of 49.25%;meanwhile,a low-lead silver concentrate with silver grade of 1623.36 g/t can be obtained.This processing technique can obtain both high-and low-lead silver concentrate at the same time,leading to the economic value of the silver concentrate improved by 687.96 Yuan per ton.
作者
王宇思
李茂林
崔瑞
孙景敏
张硕
杨哲辉
赵晗
WANG Yusi;LI Maolin;CUI Rui;SUN Jingmin;ZHANG Shuo;YANG Zhehui;ZHAO Han(College of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha 410012,Hunan,China;Henan Province Rock and Mineral Testing Center,Zhengzhou 450014,Henan,China)
出处
《矿冶工程》
北大核心
2025年第1期65-69,共5页
Mining and Metallurgical Engineering
关键词
水力旋流器
银精矿
伴生金属
铅
综合回收
hydrocyclone
silver concentrate
associated metal
lead
comprehensive recovery
