Copper ore grinding mills support both dry and wet processes. For dry grinding, a Raymond mill is selected, equipped with a temperature monitoring and cooling system to prevent sulfide oxidation. For wet grinding processes requiring flotation beneficiation, a wet ball mill is used for coarse grinding, paired with a vertical stirred mill for fine grinding.

Before feeding into the iron ore grinding mill, the material must undergo multi-stage crushing. The selection of the grinding mill focuses primarily on hardness. Raymond mills are suitable for processing soft iron ores such as limonite, while ball mills excel at handling high-hardness iron ores like magnetite and hematite.