Understanding the energy-size reduction relationship is vital to grinding process; therefore, this paper aims to show the energy-size reduction of magnetite-calcite binary mixture in a laboratory wet conical ball mill. Single magnetite, single calcite, and blended magnetite-calcite mixture at three weight ratios in four particle sizes were ground in a laboratory wet conical ball mill at four grinding time periods. The results showed that the particle size distribution of both fine particles and coarse particles of single and mixture ground product fitted well with the PSD computed by Rosin–Rammler-Benne function. The larger mass percentage of calcite is, the higher t₁₀ of binary mixture ground product is. On the contrary, t₁₀ in the mixture decreases as the percentage of magnetite in the mixture increases. The different breakage behaviors in blended samples are due to the hardness and particle size. The results of calculated ratio of energy absorption factor showed that the calcite consumed more energy in the breakage process of binary mixture than ground alone. The JK size-dependent breakage model based on the t₁₀ method fits all the experiment data, be it generated from pure minerals, mixtures at different weight ratios, or each component separated from the mixture.

了解能量-尺寸减小关系对于磨削过程至关重要；因此，本文旨在展示实验室湿式锥形球磨机中磁铁矿-方解石二元混合物的能量尺寸减小。单一磁铁矿、单一方解石和混​​合磁铁矿-方解石混合物以三种重量比和四种粒度在实验室湿锥形球磨机中以四个研磨时间段进行研磨。结果表明，单一和混合研磨产品的细颗粒和粗颗粒的粒度分布与由Rosin-Rammler-Benne函数计算的PSD很好地吻合。方解石的质量百分比越大，二元混合物研磨产物的t _10越高。相反，t ₁₀随着混合物中磁铁矿百分比的增加，混合物中的磁铁矿含量减少。混合样品中不同的破损行为是由于硬度和粒度。能量吸收因子比值计算结果表明，方解石在二元混合物破碎过程中消耗的能量比单独使用的要多。基于 t ₁₀方法的 JK 尺寸相关破损模型适合所有实验数据，无论是由纯矿物、不同重量比的混合物还是从混合物中分离的每个组分产生的。