Intelligent control system and control method for removal of impurities by chlorine oxidation
An intelligent control system and control system technology, applied in the field of metallurgy, can solve the problems affecting the continuous and stable impurity removal effect and the unstable control of solution chemical quality and parameters, and achieve high-quality economical and stable operation, continuous and stable fine control, The effect of lower economic indicators
Inactive Publication Date: 2019-06-21
JINCHUAN GROUP LIMITED
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for intelligent control of chlorine oxidation and impurity removal to solve the problem of unstable control of parameters during the hydrometallurgical chlorine oxidation and impurity removal process, which affects the continuous and stable impurity removal effect and the chemical quality of the solution
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Embodiment 1
[0023] In this embodiment, the impurity removal reaction tank is provided with five reaction tanks. The neutralizing agent is nickel carbonate.
[0024] 1. The pipe diameter of the inlet pipe of the chlorine gas oxidant operating valve in the production process of cleaning metallurgical liquid is transformed into a matching pipe diameter according to about 60% of the actual consumption, and the pipe diameter of chlorine gas is transformed into a DN40 variable diameter pipe according to the actual production consumption and A DN40 straight-through pipe with a length of 1.5m, and a DN40 chlorine gas regulating valve is installed in the middle of the straight-through pipe. The material selection of the valve is a polytetrafluoroethylene-lined material resistant to strong acid corrosion, and the valve has the function of automatic interlocking feedback.
[0025] 2. Install a potentiometer 12 to detect the redox of chlorine gas in the first tank of the impurity removal reaction ta...
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The invention discloses an intelligent control system and a control method for removal of impurities by chlorine oxidation, which belong to the field of metallurgy, so as to solve the problem that control of parameters and the like is instable in a process of impurity removal by the chlorine oxidation in hydrometallurgy, and the continuous stable impurity removal effect and the chemical quality ofa solution are affected. The system includes a PLC control system, a chlorine flow meter, a nickel carbonate flow meter, a detection unit, and an execution unit, the detection unit comprises a potentiometer, a pressure transmitter and a pH detection meter, and the execution unit comprises a chlorine regulating valve and a nickel carbonate regulating valve; the potentiometer is installed in a first reaction tank of an impurity removal reaction tank, and the potentiometer is connected to the PLC control system through a potential converter; and the pH detection meter is installed on the impurity removal reaction tank, and the pH detector is connected to the PLC control system. The key to intelligent control is that calculation and arrangement of advance prediction are interlocked with dataof a reaction process and end detection feedback, and conditions are created for achieving continuous and stable fine control of the process of the impurity removal by the chlorine oxidation.
Description
technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to an intelligent control system and method for chlorine oxidation and impurity removal. Background technique [0002] In hydrometallurgy, the reagent chlorine oxidation method is used to remove impurities such as iron, cobalt, and lead in the production process. The impurity removal parameters need to be controlled by adjusting the amount of reagents. There is instability in the slurry ratio, and at the same time, the stability of the parameters of the liquid before the removal of impurities has a certain impact on the control of the process parameters of the removal of impurities. The parameters of the liquid before the removal of impurities are stably controlled under certain conditions, and the parameters of the chlorine oxidation reagent are controlled at a certain level. In order to meet the technical conditions of the subsequent process. [0003] The traditional chlorin...
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IPC IPC(8): G05B19/05G05B11/42G05D27/02G05D29/00C22B3/44
CPCY02P10/20
Inventor 胡继刚许立佩胡进宝王安喜周通郑军福刘军苏荣张世元
Owner JINCHUAN GROUP LIMITED