Kinetics of Impurity Removal in Zinc Hydrometallurgy Based on Parameter Estimation

Impurity removal is a momentous part of zinc hydrometallurgy process. In this paper, hybrid modeling method mechanism and parameter estimation was proposed on the basis not changing actual production process lead-zinc smeltery. Firstly, overall nonlinear dynamic model established, then deviation between theoretical value detected outlet ion concentration taken as objective function to establish optimization model. The gradient vector Hessian matrix with respect were derived, algorithm based steepest descent Newton given. Finally, using data smeltery in China, parameters inversed. An intensive simulation validation analysis characteristics shows accuracy potential model, also perspective practical implementation, which provides for optimal control system output guidance powder addition.