Views: 0 Author: Site Editor Publish Time: 2025-10-31 Origin: Site
As the demand for lithium continues to grow globally, efficient processing of spodumene ore—the main source of lithium—is becoming increasingly important. In the beneficiation and purification process, particle size classification plays a decisive role in improving recovery rate and concentrate quality. Among various separation technologies, the stack high-frequency fine screen has proven to be one of the most effective solutions for fine screening and desliming in lithium processing plants.
1. Characteristics of Spodumene Classification
Spodumene ore is typically fine-grained and associated with gangue minerals such as quartz, feldspar, and mica. During grinding and desliming, the ore slurry often contains a high proportion of -0.1 mm particles, which makes precise classification difficult. Traditional vibrating screens or spiral classifiers often struggle to achieve efficient separation at such fine sizes, leading to reduced lithium recovery and increased circulating load.
2. Working Principle of Stack High-Frequency Fine Screens
A stack high-frequency fine screen consists of multiple screen decks arranged vertically within a compact structure. Each deck operates independently with a high vibration frequency (up to 50 Hz), generating strong stratification and separation forces. Fine particles pass through the mesh rapidly, while coarse particles are efficiently discharged.
Key features include:
High screening efficiency for particles as small as 0.038 mm.
Multi-deck design, maximizing capacity in limited plant space.
Modular structure, easy for installation and maintenance.
Low energy consumption compared with hydrocyclones.
3. Application in Lithium (Spodumene) Processing
In spodumene classification, stack high-frequency screens are typically used after grinding or before flotation. Their precise separation capability allows:
Removal of ultra-fine slimes, improving flotation selectivity.
Better particle size control, ensuring stable flotation feed.
Increased lithium concentrate grade and recovery rate.
Reduced water and reagent consumption, enhancing plant economics.
Compared to traditional wet screening or hydrocyclone classification, high-frequency fine screens deliver 20–30% higher efficiency and finer product control, directly improving downstream flotation performance.
4. Conclusion
The stack high-frequency fine screen has become a core technology in modern lithium and spodumene processing. With high precision, compact design, and energy-efficient operation, it provides a reliable solution for fine classification and desliming. As global lithium production expands, these advanced screening systems will continue to play a key role in achieving higher recovery, cleaner concentrates, and more sustainable mineral processing.
