There are about 30 types of minerals mainly composed of lithium, with typical lithium minerals including spodumene, lithium mica, and perovskite; At present, the most utilized lithium resources are mainly pegmatite deposits and brine deposits. The lithium containing minerals in pegmatite deposits mainly include spodumene and lithium mica, while the development of brine lithium resources mainly involves carbonate and sulfate.
Due to its inherent occurrence state and other reasons, the beneficiation process of lithium ore is relatively complex. Its development mainly revolves around the processing and purification of spodumene, perovskite, and lithium mica; The main methods for spodumene beneficiation include manual selection, flotation, thermal cracking, gravity separation, magnetic separation, etc; The main beneficiation methods for lithium mica include manual selection, flotation, and gravity selection.
The cost of extracting lithium from salt lake brine is much lower than that from ore, and it has become the dominant industry in the world. The main processes for extracting lithium from salt lakes include precipitation, ion exchange adsorption, solvent extraction, etc.
Gravity separation+flotation process
After crushing and grinding, the raw ore is first subjected to gravity separation to separate some minerals with higher density. The tailings from gravity separation are concentrated and enter flotation to recover lithium minerals.
Process characteristics
Good product quality and diverse product types.
Typical beneficiation plant
The mineral composition of the ore at Xinjiang Kelumute beneficiation plant is mainly composed of sodium feldspar, microcline feldspar, quartz, spodumene, as well as muscovite and lithium mica. The specific process is as follows:
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