ABSTRACT

In recent years, lead and zinc, emerge to become one of the most widely used non-ferrous metals for their growing demand in lead-acid batteries, galvanization, radio-active shielding, alloy, and pigments, etc. With continuous exploitation and expanding plant capacity, exhaustion of primary high-grade lead-zinc resources has already been initiated. This culminates into low grade, fine grain size, complex ore mineralogy, and poor liberation, thus, causing the beneficiation of lead-zinc ore a challenging task. This paper summarizes the classification of ore deposits and different beneficiation techniques that are currently employed for the treatment of lead-zinc ore. Froth flotation is the most widely used beneficiation technique. The selection of a suitable reagent regime in view of varied mineralogy, physical and chemical characteristics of lead-zinc ore is of critical importance to achieve maximum grade and recovery. Other than flotation, gravity concentration, magnetic separation, or combined processing techniques adopted for processing of lead-zinc ores are also reviewed. A brief summary of different beneficiation practices at different places is presented in detail and further research areas are identified.

摘要

近年来，铅、锌在铅酸蓄电池、镀锌、放射性屏蔽、合金、颜料等方面的需求不断增长，成为应用最广泛的有色金属之一。随着不断的开发和扩大工厂产能，初级高品位铅锌资源的枯竭已经开始。最终导致品位低、粒度细、矿石矿物学复杂、游离度差，从而使铅锌矿的选矿成为一项艰巨的任务。本文总结了目前用于处理铅锌矿的矿床分类和不同的选矿技术。泡沫浮选是应用最广泛的选矿技术。鉴于不同的矿物学选择合适的试剂方案，铅锌矿石的物理和化学特性对于实现最大品位和回收率至关重要。除浮选外，还对铅锌矿选矿采用的重选、磁选或联合选矿技术进行了综述。详细介绍了不同地方不同选矿实践的简要总结，并确定了进一步的研究领域。