Auto-control system for electrolysis ingredient of aluminum

Abstract

An autoamtic charge control system for preparing electrolytic aluminium features that its main control unit is a programmable controller or an industrial controller, a static metering mode is used for higher precision, and the charge systems A and B are controlled by it to work alternatively, so forming a continuous charge procedure. Its advantage is high charge uniformity.

Description

Technical field [0001] The invention relates to a control system of aluminum electrolysis production process, in particular to the batching control of raw materials required for electrolysis production. Background technique [0002] The raw materials needed in the production process of aluminum electrolytic cell include fluorine-loaded alumina and additive fluoride salt. Before the raw materials are sent to the electrolyzer, they should be batched at the batching station to ensure the reasonable composition of the molten electrolyte, that is, the appropriate molecular ratio of the electrolyte in the electrolyzer during the production process of the electrolyzer. At the same time, in order to grasp the consumption of raw materials, it is necessary to accurately measure the above two raw materials. [0003] In the past, fluorine-containing alumina and alumina were measured by punching plate flowmeter. The advantage of this measurement method is that it can ensure continuous d...

AI Technical Summary

Problems solved by technology

[0003] In the past, fluorine-containing alumina and alumina were measured by punching plate flowmeter. The advantage of this measurement method is that it can ensure continuous discharge. The disadvantage is that due to dynamic load, the measurement process is affected by mechanical vibration and poor material flow, sticking to the punching plate. and other adverse effects, making the measurement inaccurate

Due to inaccurate measurement, accurate ingredients cannot be achieved, and the ingredient system designed in this way often cannot operate normally

After not using the continuous metering method of punching plate flowmeter, a static metering method is adopted, that is, a pressure sensor is installed at a suitable position under the hopper, and a secondary instrument is added to form a metering system, which can achieve accurate metering of raw materials, but cannot Continuous discharge cannot meet the needs of the downstream process-material conveying system, and at the same time, it is impossible to meet the requirements of uniformity of ingredients

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