New energy vehicles have become the trend of the times, and companies in the lithium battery industry chain have deployed upstream lithium mines. The demand for lithium mines is strong, and the price of lithium soars. Spodumene, one of the lithium resources, naturally rises. As the main source of lithium, the industrial ore, spodumene It is also widely used in metallurgy, chemical industry, power generation, medicine and so on.
1.Spodumene hand selection method
The manual sorting method is a sorting method based on the large difference in color and appearance between spodumene and gangue minerals. However, due to the disadvantages of high labor intensity, low recovery rate, and poor mineral processing indicators, it has gradually been replaced by mechanical mineral processing methods.
2.Spodumene Dense Medium Method
Dense medium method is a kind of gravity separation method. It uses resuspension as the separation medium and uses equipment to achieve the purpose of separation. The difference in density between spodumene and gangue minerals is not obvious. Jigging, shaking table and other methods are not satisfactory, and the density of the heavy medium method can be precisely controlled, which can effectively separate minerals with a small density difference, but a complete set of facilities is required for medium preparation, medium extraction and medium regeneration. quite complicated.
3.Spodumene magnetic separation method
Spodumene is a weak magnetic mineral, and the magnetic separation method can be used as an auxiliary operation to improve the quality of spodumene concentrate.
4.Spodumene flotation method
The spodumene flotation method is a sorting method that was researched and applied earlier, and it is also the main sorting method of spodumene at present. It can be divided into two processes: positive flotation and reverse flotation.
Positive flotation is the preferential flotation of spodumene. The general process is to grind qualified ore, add alkaline agents such as high-concentration sodium hydroxide or sodium carbonate, stir vigorously, wash the ore and deslime many times, and then add a collector to directly float. Selecting spodumene, pre-desliming and strong stirring and scrubbing can effectively enhance the purity of the mineral surface, thereby improving the collection effect, so the effect of over-grinding and mudding should be minimized during the grinding process.
Reverse flotation is to suppress spodumene in an alkaline medium with a regulator, flotation of gangue minerals with a collector, and leave the spodumene concentrate in the tank. ,
5.Spodumene combined beneficiation method
When a single beneficiation method cannot achieve a good beneficiation index, a combination of a variety of beneficiation methods can be selected for beneficiation, which is often used to improve the grade of spodumene concentrate, obtain low-iron spodumene concentrate, and be selected for recovery. Associated minerals, etc., the commonly used processes include floating-magnetic combined process, floating-gravity-magnetic combined process, etc.
The associated minerals of spodumene in nature are complex. In order to obtain better economic and environmental benefits, beneficiation experiments can be carried out to determine the optimal beneficiation process.
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