Method for measuring bottom voltage drop of aluminum electrolysis cell
A technology of aluminum electrolytic cell and measurement method, which is applied in the field of aluminum electrolytic cell electrodes, can solve problems such as misjudgment, inaccurate judgment, and lack of electrolytic cells, and achieve the effect of high measurement accuracy and convenient measurement
Active Publication Date: 2018-09-21
CHONGQING QINENG ELECTRICITY & ALUMINUM
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Problems solved by technology
[0002] In production, due to the current bottom pressure drop measurement of the electrolytic cell, due to the extension of the corners and other reasons, there is a lack of correct judgment on the actual bottom pressure drop of the current electrolytic cell, which also leads to the current production. , aluminum level, and the production conditions related to the production of aluminum are not in line with the actual situation of the electrolytic cell, resulting in misjudgment or inaccurate judgment of some electrolytic cells
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[0013] The present invention will be further described below in conjunction with drawings and embodiments.
[0014] Traditionally, the measurement of the furnace bottom pressure drop is generally to measure the pressure drop between the aluminum outlet and the B1 steel bar, and this value is used to reflect the size of the entire furnace bottom pressure drop. Specifically, furnace bottom pressure drop = cathode pressure drop + cathode steel bar pressure drop + interface pressure drop between cathode and molten aluminum + contact pressure drop between cathode and steel bar, that is figure 1 The voltage measured by the middle voltmeter V2. However, in the current 420KA large-scale electrolytic cell, due to reasons such as the extremely long extension of the corners of B1, the measured pressure drop value of B1 is too large, so the pressure drop value at B1 cannot fully reflect the pressure drop at the bottom of the entire electrolytic cell. the size of. In order to verify the ...
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The invention discloses a method for measuring the bottom voltage drop of an aluminum electrolysis cell. According to the method, a column bus is arranged above the aluminum electrolysis cell; a cathode bus is arranged at the periphery of the aluminum electrolysis cell and connected with a cathode steel bar; the cathode steel bar is connected with a cathode; an aluminum liquid layer is arranged above the cathode; an electrolyte layer is arranged above the aluminum liquid layer; the cathode bus is connected with a column bus above the next aluminum electrolysis cell; and the cathode voltage drop plus the voltage drop of the cathode steel bar plus the voltage drop of the column bus plus the interface voltage drop on a measurement circuit plus the contact voltage drop on the measurement circuit plus the welding voltage drop on the measurement circuit equals the bottom voltage drop of the aluminum electrolysis cell. According to the method, the voltage drop between an aluminum outlet and the column bus is measured, so that compared with a traditional measurement method, the method disclosed by the invention has the advantages of being high in measurement accuracy and more convenient tomeasure.
Description
technical field [0001] The invention relates to the technical field of aluminum electrolytic cell electrodes, in particular to a method for measuring the pressure drop at the furnace bottom of an aluminum electrolytic cell. Background technique [0002] In production, due to the current bottom pressure drop measurement of the electrolytic cell, due to the extension of the corners and other reasons, there is a lack of correct judgment on the actual bottom pressure drop of the current electrolytic cell, which also leads to the current production. The maintenance of production conditions related to production conditions such as aluminum levels and the amount of aluminum in production does not conform to the actual situation of the electrolytic cells, resulting in misjudgments or inaccurate judgments for some electrolytic cells. Contents of the invention [0003] The object of the invention is to propose a method for measuring the pressure drop at the furnace bottom of an alum...
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IPC IPC(8): C25C3/20
CPCC25C3/20
Inventor 吕景阳黎潮邱兴林黄书许伟
Owner CHONGQING QINENG ELECTRICITY & ALUMINUM