Cathode assembly detection method
A detection method and cathode technology, applied in the field of electrolytic aluminum, can solve the problems of rapid heating of steel bars, cracking of carbon blocks, large expansion, etc., and achieve the effect of avoiding sudden temperature drop and reducing thermal radiation.
Pending Publication Date: 2022-01-21
阿坝铝厂
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Problems solved by technology
[0003] At present, cathode phosphorus pig iron casting is carried out at room temperature. Since the thermal conductivity difference between the steel rod and the carbon block is about 250 times, the thermal expansion coefficient is also different. Transferring to a carbon block with a small thermal expansion coefficient will cause the carbon block to crack
Method used
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Embodiment Construction
[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
[0026] The invention discloses a cathode assembly detection method. The appearance of the cathode steel rod is inspected to ensure that there are no cracks and impurities on the surface of the cathode steel rod, and the curvature of the cathode steel rod is detected. If the curvature is unqualified, the corresponding Straighten.
[0027] The cathode steel rods are derusted by pickling, sand washing, polishing and other methods, and the surface of the cathode steel rods is cleaned with a grinder. After derusting, the cathode steel rods are cleaned with deionized water and alcohol. Use a marker pen to mark multiple center points equidistant on the center line.
[0028] Use a dust blower to blow the cathode carbon b...
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The invention provides a cathode assembly detection method, and relates to the technical field of electrolytic aluminum. The cathode assembly detection method comprises the following steps that appearance detection and surface cleaning are performed on a steel bar, a plurality of central points are marked on a central line of the top surface of the steel bar, the steel bar is positioned in the middle of a steel bar groove of a carbon block by taking the central points as reference; and the carbon block and the steel bar are placed on a rail car, the rail car slides into a heating furnace for preheating, and the rail car slides out and enters into a casting furnace after preheating. The casting furnace is a closed container, a plurality of layers of heat preservation layers are arranged on the inner wall of the casting furnace, phosphorus pig iron enters the steel bar groove through a casting pipe arranged at the top of the casting furnace, after casting is completed, the rail car slides out and enters a cooling furnace, the cooling furnace is the closed container, a single heat preservation layer is arranged on the inner wall of the cooling furnace, inert gas is filled into the cooling furnace, and after cooling is completed, appearance detection is carried out on the carbon block and the steel bar. The top end of the casting pipe is provided with a casting funnel, the outlet end of the casting pipe is arranged in the middle of the steel bar groove in the length direction, the top surface of the casting furnace is provided with high-temperature-resistant glass, and the casting condition in the casting furnace is observed through the high-temperature-resistant glass.
Description
technical field [0001] The invention relates to the technical field of electrolytic aluminum, in particular to a cathode assembly detection method. Background technique [0002] Both cathode carbon blocks and cathode steel rods are important components for aluminum electrolytic cells. Cathode carbon block refers to a carbon block made of high-quality anthracite or coke, graphite and other raw materials through processing. Generally used in the cathode of aluminum electrolytic cell. The use of cathode carbon blocks can improve the energy saving and service life of the aluminum electrolytic cell. The assembly of the cathode carbon block and the cathode steel plate is a process in which the two are closely integrated. The cathode carbon block is used as the cathode inner layer and conductive material of the electrolytic cell, and the cathode loop of the electrolytic cell is formed through the connection of the cathode steel rod and the cathode carbon block. [0003] At pres...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22D19/04B22D27/04B22D2/00
CPCB22D19/0081B22D19/04B22D27/04B22D27/003B22D2/00
Inventor 曹文琦王庆烜李刚李光宇
Owner 阿坝铝厂