Recommended 30 tons per hour lithium ore ball mill

The grinding of lithium ore is a critical step in lithium resource extraction, and its efficiency directly impacts the output quality of subsequent beneficiation and smelting. To meet the production capacity requirement of 30 tons per hour, comprehensive consideration must be given to ore characteristics, energy consumption control, and equipment durability. Lithium ores such as lepidolite have medium hardness but high silicon content, which can easily lead to wear of the grinding media. Therefore, equipment selection should focus on wear-resistant materials and classification accuracy. Current mainstream solutions include wet ball milling and vertical milling. The former reduces over-grinding through water-assisted classification, while the latter reduces energy consumption by over 30% through the principle of bed grinding. In actual production, the equipment must be equipped with a dynamic powder selection system to ensure that 80% of the finished product particle size is concentrated in the target range (usually -200 mesh), while also avoiding energy waste caused by excessive grinding. Based on the grinding characteristics of lithium ore, the following equipment options are recommended:

 

Ø2700×4500 wet ball mill

This model has a drum diameter of 2.7 meters and a length of 4.5 meters. Equipped with a 480kW motor, it offers a processing capacity of 26-90 tons/hour, with flexible adjustment up to a target capacity of 30 tons. Its advantages include the use of wear-resistant rubber liners and high-chromium alloy steel balls, which effectively reduce wear and tear on siliceous ore. Furthermore, its water flow classification system precisely controls the discharge particle size (0.074-0.4mm). The wet process is particularly suitable for lepidolite, reducing dust pollution and improving subsequent leaching efficiency.

 

LMK Series Vertical Mill

This vertical mill utilizes an integrated roller compaction and classification design, reducing unit energy consumption by 35% compared to traditional ball mills. It also features ceramic roller sleeves for high-silicon ore. For example, with a main motor power of 560kW, the LMK36 can consistently process 28-32 tons/hour of lithium ore, achieving a finished product fineness of 80μm with a sieve residue of ≤8%. Its enclosed structure is more suitable for production areas with strict environmental requirements.

 

When selecting a ball mill, consider the following: a wet ball mill requires a hydrocyclone (classification efficiency ≥ 85%), while a vertical mill requires regular inspection of the classifier blades for wear. For spodumene containing high levels of clay impurities, adding a pre-screening device is recommended to prevent material blockage. For both solutions, the grinding media filling ratio must be adjusted based on the ore hardness (e.g., Mohs hardness 4-5). Typically, the steel ball filling ratio for a wet ball mill should be controlled at 30%-35%, and the roller pressure for a vertical mill should be maintained at 10-12 MPa.