某铅锌银矿选矿厂工艺优化改建设计

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中图分类号：TD952 文献标志码：B 文章编号：1004-4345（2025）05-0009-05

Process Optimization and Renovation Design of a Lead-Zinc-Silver Concentrator

TAN Yankui

（China Nerin Engineering Co.， Ltd.，Nanchang，Jiangxi 330o38，China）

Abstract Toaddressissues includingundersized equipment，complex processflow，andsignificant fluctuations inproduction indicatorsatalead-zinc-silverconcentrator，aprocessoptimizationandrenovationdesignwascariedoutwiththegoalof improving both technical performance and economic benefits. A“two-stage closed-circuit crushing + ball milling” process was adopted to achieve a crushed product size of -15 mm and increasing grinding fineness to 70% passing -2OO mesh. The separation process retained preferentialflotationbutwassimplifiedbyreducingthenumberofsavengingstagesforlead，zincandsulfurtotwothreandone respectively.ditioalygerflotatiocellsereroduced，wateingpentaadedndplatltsd Afterrenovation，theconcentratorachievedastableprocesingcapacityof150Ot/d.Keyoutcomesincludeanincreaseinlead concentrate grade from 40.10% to 45.12% ， zinc recovery from 84.25% to 86.21% ，and sulfur recovery from 40.84% to 52.48% . These improvementswereaccompaniedbyenhancedoperationalstabilityasaferworkingenvionment，andsignficantlyelevatedonomic benefits.

Keywordslead-zinc-silverore;concentratorrenovation; preferential flotation; process optimization; equipmentupsizing

选矿厂改建工程的建设目的通常是优化工艺流程、提高产品质量、降低生产成本以及减少对环境的影响等。（剩余4265字）