The process of Bayer high pressure digestion, the physical meaning of realizing RP control block diagram by computer internal module and the mathematical model in RP control are briefly introduced.

• 简单介绍了拜尔法高压溶出工艺流程、用计算机内部模块实现RP[1]控制框图的物理意义及RP控制中的数学模型。