When constructing a graphite beneficiation plant with a daily processing capacity of 1000 tons, the appropriate selection of ball mills is crucial to ensuring production efficiency and product quality. Due to its layered structure, softness, susceptibility to over-grinding, and easy oxidation, graphite places higher demands on grinding equipment: it must guarantee high processing capacity while controlling product particle size uniformity and avoiding over-grinding.

Based on industry experience, a beneficiation plant processing 1000 tons of raw ore per day typically requires a ball mill system with an hourly processing capacity of approximately 42–50 tons (calculated based on 20–24 hours of operation per day). Referring to existing industrial data, an overflow or grate-type ball mill with dimensions of φ3200×4500 (i.e., 3.2 meters in diameter and 4.5 meters in length) or φ3600×6000 can meet this capacity requirement. If a high-efficiency ball mill with a forced discharge device (such as the graphite-specific ball mill produced by XKJ GROUP) is used, the processing capacity can be increased by approximately 40%. In this case, a slightly smaller size device, such as φ3000×5000, can be appropriately selected to reduce investment costs.

In addition, the following factors must be considered: first, the hardness and particle size of the graphite ore determine the required grinding fineness; second, whether a multi-stage grinding process is adopted; and third, the efficiency of the supporting classification equipment (such as spiral classifiers or hydrocyclones). To ensure continuous and stable operation, it is recommended to configure two medium-sized ball mills in parallel, which facilitates maintenance and allows for flexible load adjustment.

In summary, a graphite beneficiation plant with a daily processing capacity of 1000 tons should use a ball mill with a single processing capacity of 45–60 tons/hour. Priority should be given to dedicated graphite ball mills with forced discharge, rolling bearings, wear-resistant liners, and optimized speed design to achieve the production goal of "fast and stable" operation.