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In the wave of new energy revolution, the strategic position of lithium as "white oil" is becoming more and more prominent. As a professional provider of mineral processing EPCM+O services and equipment solutions manufacturers, we in-depth analysis of the world's five major types of lithium ore deposit characteristics and beneficiation process, to help customers maximize the value of resources.
This type of deposit is embedded in the closed basin salt lake, lithium in a soluble state in the high magnesium-lithium ratio brine system. Battery-grade lithium carbonate can be efficiently extracted by solar cell evaporation concentration-sodium carbonate precipitation. Atacama Salt Lake in Chile adopts graded evaporation process, with magnesium-lithium separation efficiency of more than 85%, while Zabuye Salt Lake in Tibet pioneered the “gradient solar cell” technology, realizing zero reagent consumption.
Selection points: recommended modular evaporation pool design and chemical precipitation system, supporting special centrifuges and filtration equipment for lithium brine.
LCT-type pegmatite containing lithium pyroxene and lithium-permeable feldspar needs to be crushed to -0.15mm by three sections and one closed-circuit crushing, and preferential flotation is carried out by using anionic and cationic combination of trapping agents. Greenbushes mine in Australia through the photoelectric sorting pre-polishing waste, so that the grade of raw ore from 1.5% Li₂O up to 6.2%, significantly reducing the grinding energy consumption.
Beneficiation scheme: configure high-pressure roller mill to realize more crushing and less grinding, with inflatable flotation machine and ceramic filtration system.
Lithium montmorillonite deposits in marine shale require sulfuric acid activation-ion exchange process. The Mina do Barroso project in Brazil developed a dynamic leaching system, which increased the lithium recovery rate to 92% and realized the comprehensive utilization of sodium and potassium by-products.
Key technology: recommended fluidized leaching reactor and continuous countercurrent washing system, supporting membrane separation and concentration equipment.
Lithium montmorillonite-rich volcanic sedimentary deposits, lithium can be extracted through sulfuric acid roasting - water leaching process. Thacker Pass project in the United States innovative use of two-stage countercurrent leaching, acid consumption reduced by 40%, while supporting the D2EHPA extraction system to achieve deep purification of impurities.
Equipment Configuration: It is recommended to use high-efficiency flash dryer and rotary kiln roasting system, with anticorrosive stirring leaching tank.
The lithium mica resources associated with the tantalum-niobium mine in Yichun, Jiangxi Province, adopt the process of “milling and desliming - mica flotation - sulfuric acid roasting” to simultaneously recover rubidium and cesium rare metals. The newly developed composite recovery agent makes the recovery rate of mica break through 80%, and the tailings preparation of ceramic raw material realizes zero emission.
Innovative solutions: Vertical mills are equipped to realize protective crushing of flake minerals, and filling flotation columns are used to improve sorting precision.
The development of global lithium resources is showing a diversified pattern, and each type of deposit requires customized beneficiation solutions. We provide full-cycle EPCM+O services from ore selectivity test, process design to intelligent processing plant construction, equipped with energy-efficient crushing and grinding, flotation and separation, concentration and filtration complete sets of equipment, to help you accurately match the characteristics of the resources and build a cost-competitive lithium salt production line.
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