中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 9 No. 1 March 1999 |
（1.Department of Automatic Control Engineering,Central South University of Technology, Changsha 410083, P. R. China;
2.Michio Nakano Department of Control and Systems Engineering,Tokyo Institute of Technology, Tokyo152-8552, Japan;
3.Mechatronics Department, Tokyo Engineering University, Tokyo192-8580, Japan）
Abstract:One important step in zinc hydrometallurgy is the leaching process, which involves the dissolving of zinc-bearing material in dilute sulfuric acid to form zinc sulfate solution. The key problem in the process control is to determine the optimal pHs of the overflows of the continuous leaches and track them. An expert control system for the leaching process was designed to solve the key problem. A methodology is propose for determining and tracking the optimal pHs with an expert control strategy based on a combination of steadystate mathematical models and rule models of the process.
Key words: leaching process expert control system mathematical model rule model
