Optimization method of gold hydrometallurgy displacement process

Abstract

The invention provides an optimal control method of a gold hydrometallurgy displacement process. The optimal control method comprises the steps of process data acquisition, auxiliary variable selection and data preprocessing, replacement process optimization model building, replacement process optimizing and the like; the optimal control method is characterized in that a replacement rate mechanism model is built by virtue of a chemical reaction dynamics equation and the material conservation principle, a gold mud grade data model is built by use of a KPLS algorithm, and the replacement process is optimized by use of a self-adaptive iterative optimization algorithm with a correction term. The invention also provides a software system for implementing the replacement process optimization; the software system comprises a main program, a database and a human-computer interaction interface; the system software operates on the model computer of a hydrometallurgy synthesis process control system as a hardware platform. The optimal control method of the gold hydrometallurgy displacement process is applied to the replacement process of a gold hydrometallurgy factory to optimize the additive amount of zinc powder, and the result indicates that the method succeeds in guaranteeing the recovery rate of gold, reducing the treatment cost of subsequent steps and increasing the economic benefits.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and particularly provides a method for optimizing the replacement process of hydrometallurgy, that is, a method for optimizing the amount of zinc powder added in the replacement process of hydrometallurgy. Background technique [0002] Hydrometallurgy technology is a new technology that is gradually mature and urgently needs to be industrialized. Compared with traditional pyrometallurgy, hydrometallurgy technology has the advantages of high efficiency, cleanliness, and is suitable for the recovery of low-grade complex metal mineral resources. Especially in view of the characteristics of my country's mineral resources, which are rich in lean ore, complex symbiosis, and high impurity content, the industrialization of hydrometallurgical processes is of great significance for improving the comprehensive utilization of mineral resources, reducing solid waste production, and reducing environmental polluti...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: (1) The manual assay lags a few hours, so these assay values ​​are difficult to be directly used for the control of the replacement rate

(2) Operators mainly rely on their own experience to adjust, but due to differences in operating experience, the amount of zinc powder added fluctuates greatly

Adding more zinc powder can ensure that all precious metals are replaced, but it also causes unnecessary waste of zinc powder, which not only easily blocks the pipeline, but also increases the subsequent treatment cost of gold mud and reduces economic benefits

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