Online Detection And Applications Of High Temperature Crude Zinc Liquid Flow

During the course of rectifying zinc, the fluid of coarse liquid zinc put into Pb column from furnace works as a key technical parameter. Whether the fluid of coarse liquid zinc is steady or not is one of the most important factors that influence the life of distillation column and the output and quality of product. Meanwhile, it also much affects the recovery rate of valuable metals. In this paper, the fluid of coarse liquid zinc in Shaoguan Smeltery is investigated and a new soft sensor method-weighing method is proposed. We look upon the weight of coarse liquid zinc as Secondary variable and get the model between flow and weight based on hydrodynamic theory. Then we design an instrument to measure the fluid of coarse liquid zinc based on the mathematical model.Firstly, we introduce the basic circs of the project, soft sensor method and the theory of weighing method. Then we mainly discuss the design of each of the meter which is based on 89C52 single-chip, the communication project and error control method. In the end, some experiences about the reliability technology in designing system are mainly presented. The main work and research results in this paper include the following:1. We propose a soft sensor method -weighing method.2.This paper detailedly discusses the design of the instrument which is used to measure the fluid of coarse liquid zinc based on 89C52 single-chip. We emphasize how to build the fluid of coarse liquid zinc mathematical model and how to modify the parameters.3.Single host computer should be designed to successfully control several client single-chip. The key technology depends on the reliability of the communication interface, the property of the communication protocol and the error control method. We do some research in RS-485 communication and error controlling methods.4. According to the practice, we present the anti-jamming measures and some experiences in designing system in details in this paper.5.We design the supervision software of the host computer by VC++, including the interface and databaseThe system has advantages including reasonable scheme, advanced modeling method, convenience of realization, friendly man-machine interface and operating convenience. It is worthy of being popularized.