Electrolytic aluminum shell hitting and discharging system
A technology for shelling and discharging, electrolytic aluminum, applied in the field of electrolytic aluminum, can solve the problems of inability to open the shell surface, easy sudden effect, low alumina concentration, etc., to eliminate potential safety hazards, improve safety factors, and avoid accumulation.
Pending Publication Date: 2018-09-28
LIAOCHENG XINYUAN GRP CO LTD
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Problems solved by technology
[0003] However, if the grouping and alternating feeding method is adopted, the amount of feeding at the same time is too large, which will easily cause alumina to accumulate at the feeding point of the electrolytic cell, so that the shelling system of the electrolytic cell cannot open the shell surface. Aluminum cannot enter the electrolyte, resulting in a low concentration of alumina in the tank, causing the effect to be sudden, resulting in a high effect coefficient; at the same time, due to the large amount of feed per unit time, when the alumina is just added, part of the alumina dissolves quickly, However, due to the influence of electrolyte condensation and other reasons, the remaining alumina cannot be dissolved in time, and alumina and electrolyte polymers are formed on the surface of the electrolyte. This part of the polymer will continue to dissolve in the future, but the aluminum oxide will dissolve due to the increase in the concentration of alumina in the electrolyte Affected by speed reduction and other reasons, the dissolution speed is very slow, and part of it settles to the bottom of the aluminum liquid, forming a precipitate. After a long time, it will form a hard furnace bottom crust, especially near the shelling and feeding point of the electrolytic cell. And the crust is more serious, the bottom of the furnace and the increase of the crust can make the inner shape of the electrolytic tank furnace irregular, resulting in the circulation of the liquid electrolyte and aluminum liquid in the electrolytic tank being affected by the deformed furnace, and finally causing the electrolytic tank to be unstable and the current efficiency reduced
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] The object of the present invention is to provide an electrolytic aluminum shelling and feeding system, which further avoids the accumulation of alumina by controlling the feeding amount of alumina powder.
[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. ...
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The invention discloses an electrolytic aluminum shell hitting and discharging system. The system comprises a groove control machine, a shell hitting electromagnetic valve, a shell hitting machine, adischarging electromagnetic valve and a discharging machine; the groove control machine comprises a shell hitting circuit and a discharging circuit; the output end of the shell hitting circuit is connected with the shell hitting electromagnetic valve, and the output end of the discharging circuit is connected with the discharging electromagnetic valve; and the shell hitting electromagnetic valve is connected with the shell hitting machine, and the discharging electromagnetic valve is connected with the discharging machine. According to the electrolytic aluminum shell hitting and discharging system, by arranging the shell hitting electromagnetic valve and the discharging electromagnetic valve, shell hitting and discharging of alumina powder in electrolytic aluminum are achieved, a traditional gas controlled cabinet is replaced, quantitative control over discharging of the alumina powder is achieved, accumulation of alumina is avoided, and energy is saved.
Description
technical field [0001] The invention relates to the field of electrolytic aluminum, in particular to an electrolytic aluminum shelling and blanking system. Background technique [0002] In the production process of electrolytic aluminum, the feeding method of alumina powder is an important factor affecting the stability of the electrolytic cell. At present, the large-scale prebaked aluminum electrolytic cell in my country generally uses an online point-type feeding device, which is composed of a material box and a point-type shelling and feeding mechanism. The point-type feeding device is installed on the lower side of the material box, and consists of two parts: the shelling device and the feeding device. The shelling device realizes opening a hole on the crust surface of the electrolytic cell, and the feeding device puts it in the constant volume chamber. The alumina powder is unloaded into the electrolytic cell through the opened hole to realize one-time quantitative fee...
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IPC IPC(8): C25C3/14
CPCC25C3/14
Inventor韩宪超张存忠崔建民董哲杨希明
OwnerLIAOCHENG XINYUAN GRP CO LTD