Lepidolite is a basic aluminosilicate of potassium and lithium, which is one of the mica minerals. The chemical composition of lepidolite is K{Li2-xAl1+x[Al2xSi4-2xO10](OH,F)2} (x=0~0.5), and the Li2O content of lepidolite concentrate after mining is usually 2.0-3.5%. Contains rubidium, cesium, etc. Compared with spodumene, a commonly used mineral for extracting lithium, lepidolite has three main characteristics: lepidolite has complex components and is difficult to extract. Spodumene is essentially a lithium-containing aluminosilicate, although it is usually associated with various impurities, but the main component is only lithium-silicon-aluminum. From the perspective of chemical formula, lepidolite obviously has more complex components, and the main component is lithium potassium silicon aluminum fluoride. The lepidolite beneficiation process includes crushing and screening, grinding and grading, sorting, concentrate dehydration and other stages. In this article, we will take you to understand the lepidolite beneficiation equipment required for each stage of lepidolite beneficiation.

1. Lepidolite crushing and screening equipment

According to the processing principle of "more crushing and less grinding", lithium ore can adopt a three-stage-closed-circuit crushing and screening process or a two-stage-closed-circuit crushing and screening process in the crushing and screening stage. Which process to use specifically needs to refer to the particle size of the raw ore. Compared with two-stage and one-closed-circuit crushing and screening, three-stage and one-closed-circuit crushing and screening can solve the problem of coarse particle size and large particle size fluctuation of lithium ore, which can ensure the processing capacity of raw ore and improve lithium ore production indicators. The lepidolite beneficiation equipment mainly used in this stage is jaw crusher and cone crusher. Among them, the jaw crusher is used for coarse crushing of lithium ore, the cone crusher is used for medium and fine crushing of lithium ore, and the screening equipment is mainly a circular vibrating screen.

2. Grinding and classifying equipment for lepidolite ore

In the grinding and grading stage of lithium ore, in order to ensure that lithium minerals are fully dissociated from gangue mineral monomers, a closed-circuit grinding and grading process can be adopted. The first-stage grinding equipment can use lepidolite beneficiation equipment such as wet grid ball mills and rod mills. . When secondary grinding is required, a wet overflow ball mill can be selected as the grinding equipment for this stage. Classification equipment can adopt graded hydrocyclone group. According to the ore properties of different lithium ores, some lithium ores may need to be deslimed after the grinding stage. The use of desliming equipment can choose concentrated hydrocyclones, inclined plate thickeners, etc.

3. Sorting equipment for lepidolite ore

Since lithium ore usually has many different associated minerals, it is often necessary to consider the comprehensive recycling of lithium ore. And other processes to form a joint selection process.

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