结合热分析、XRD、SEM和粒度分析系统研究球磨时间对钛精矿碳热还原的影响。结果表明:球磨过程中石墨晶体结构容易沿(002)晶面被破坏。高转速下球磨4 h后钛精矿/石墨混合粉料的粒度大幅度降低,获得了均匀的复合组织结构。球磨有效降低了钛精矿不同阶段的还原反应温度,钛氧化物逐级还原反应完成。 The effects of milling time on the carbothermal reduction of titanium concentrates were investigated by means of thermal analysis, XRD, SEM and particle size analysis. The results show that the graphite crystal structure is easily damaged along the (002) crystal plane during ball milling. After milling for 4 h at high speed, the particle size of titanium concentrate / graphite mixed powder was greatly reduced, and a uniform composite structure was obtained. Ball milling effectively reduces the reduction reaction temperature in different stages of titanium concentrate, and the titanium oxide reduction step by step is completed.