This production line focuses on the lithium extraction needs from lithium mica ore. Through high-temperature thermal treatment, the inherent crystal lattice structure of lithium mica is destroyed, efficiently converting the hard-to-utilize lithium components into soluble lithium salts, while simultaneously achieving fluoride solidification and harmless treatment. The entire production line integrates fully automated process stages, enabling continuous production from raw ore to high-purity lithium salts, balancing lithium extraction efficiency, environmental control, and comprehensive resource utilization, and reliably meeting the requirements for large-scale production of battery-grade lithium salts.
Raw lithium mica ore undergoes automated feeding, crushing and grinding, screening and impurity removal, combined with drying using waste heat from roasting flue gas, to produce qualified finely ground ore powder.
The ore powder is precisely proportioned and uniformly mixed with sulfate fluxes, then subjected to gradient high-temperature roasting in a specialized rotary kiln, achieving lattice deconstruction, lithium salt conversion, and fluorine solidification.
The roasted clinker is cooled, finely ground, and then subjected to wet leaching and solid-liquid separation. The leachate is purified, concentrated, and refined to obtain high-purity lithium salts, while concurrently producing valuable by-products and responsibly disposing of lithium slag through resource utilization.
Process Advantages
1. Efficient and Controllable Lithium Recovery Rate
Adapted to the mineral characteristics of lithium mica, with strict control over process parameters to ensure a high overall lithium recovery rate and low resource loss.
Compatible with different grades of ore materials, offering wide applicability and production flexibility.
2. Stable and Durable Kiln Equipment
Constructed with high-temperature-resistant, wear-resistant, and anti-corrosion materials, featuring precise gradient temperature control and uniform material heating.
Effectively prevents kiln caking and blockage, ensuring long maintenance cycles and convenient inspection.
Full-process monitoring enhances automation levels.
3. Wide Adaptability of Raw Materials
Capable of processing high- and low-grade lithium mica raw ores, concentrates, and polymetallic associated ores with adjustable parameters for strong flexibility.
Balances comprehensive resource recovery with economic benefits.
Provides pilot testing with customer-supplied materials and offers multiple process solutions.
4. Excellent Fluoride Solidification
Achieves stable solidification of fluorine elements during the roasting stage, preventing fluorine volatilization that could cause equipment corrosion and environmental pollution.
Enhances production safety.
5. Closed-Loop Optimization for Energy Saving and Consumption Reduction
Waste heat from flue gas is recovered for raw material drying, while residual heat from the roasted material is used to preheat the mixed feed.
Significantly reduces overall energy consumption and improves production economy.
