Method for real-time detection of concentration of aluminum oxide in aluminum cell
A real-time prediction, aluminum electrolytic cell technology, applied in the direction of material resistance, etc., can solve the problems of high cost, large error, difficult to combine alumina concentration and control parameters, etc.
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Embodiment 1
[0056] The purpose of the prediction of alumina concentration in the electrolytic cell is to accurately measure its alumina concentration. 1# aluminum electrolytic cell, its series current is 150kA, the feeding capacity of the feeder is 1.67kg after many times of calibration, each electrolytic cell has 4 feeders, and the number of feedings per day in one week is 290 times. The inner time interval is 500s, and the unloading interval in the excess cycle is 180s. The cell control system is used to measure and control the feeding cycle and time of the electrolytic cell and to measure the alumina concentration in the electrolytic cell.
[0057] During the shortage period, the alumina concentration values measured by the tank control system are: 2.69, 2.60, 2.53, 2.48; at the same time, manual sampling analysis is carried out, and the values are: 2.70, 2.60, 2.52, 2.47; the measurement accuracy is excellent. Below 1%, it can fully meet the requirements of electrolytic aluminum ...
Embodiment 2
[0059] 2# aluminum electrolytic cell, its series current is 300kA, the feeding capacity of the feeder is 1.67kg after several calibrations, each electrolytic cell has 4 feeders, and the number of feedings per day in one week is 580 times. The inner time interval is 400s, and the unloading interval in the excess cycle is 120s.
[0060] During the shortage period, the alumina concentration values measured by the tank control system are: 2.49, 2.45, 2.32, 2.28. At the same time, it also conducts manual sampling analysis and its values are: 2.50, 2.42, 2.32, 2.27; its measurement accuracy is better than 1%, which can fully meet the requirements of electrolytic aluminum production and control.
[0061] Using this method to predict the alumina concentration of the control electrolytic cell is beneficial to the production process and the operator to grasp the running state of the electrolytic cell in time, and is beneficial to the management and control of the electrolytic alumin...
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