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本文综述了我国铝土矿中一水硬铝石和其他几种主要矿物在预焙烧过程中的矿物行为，说明活化焙烧不仅有利于矿石溶出，而且可以改善拜耳法氧化铝生产的一些技术经济指标。结合我国近年来的试验研究和生产实践，对矿石预焙烧的应用进行了分析。
This paper summarizes the mineral behavior of diaspore and several other major minerals in the bauxite in China during the pre-roasting process. It shows that the activated roasting is not only beneficial to the ore dissolution, but also can improve some technical and economic indexes of Bayer alumina production. Combined with the experimental research and production practice in recent years in our country, the application of ore prebaking is analyzed.