引言众所周知,纯拜耳法工厂不回收赤泥中的氧化铝及其附碱,因而,对溶出过程的要求比其它生产方法苛刻得多。有关经济技术指标也就显得更为重要。对于溶出一水硬铝石,为了取得理想的溶出效果,各工厂均不同程度地添加石灰,以加快溶出速度、提高氧化铝溶出率和降低化学碱损失。但随着石灰添加量(或称配灰量、配钙量)的增加,往往溶出效果不都 Introduction It is a well-known fact that the pure Bayer process plant does not recover the alumina and its caustic soda in the red mud and thus requires a much more demanding dissolution process than any other production method. Related economic and technical indicators also become more important. For the digestion of diaspore, in order to achieve the desired leaching effect, various levels of plant lime were added to speed up the dissolution rate, increase the alumina dissolution rate, and reduce the chemical base loss. However, with the addition of lime (or with the amount of gray, with the amount of calcium), often not all dissolve the effect