A combined tamping construction method for lining paste of aluminum electrolytic cell
A technology of lining paste and aluminum electrolytic cells, applied in the field of electrolytic aluminum, can solve the problems of low bond strength, insufficient tamping compactness, local delamination, etc., achieve enhanced bond strength, solve local delamination problems, The effect of improving density
Active Publication Date: 2018-03-16
MCC TIANGONG GROUP
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Problems solved by technology
[0007] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a combined tamping construction method for the lining paste of the aluminum electrolytic cell, which effectively solves the problem of tamping construction of the aluminum electrolytic cell paste. A series of common problems such as insufficient tamping density, partial delamination, and low bond strength
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[0019] A combined tamping construction method for the lining paste of an aluminum electrolytic cell. According to the distribution position and area size of the electrolytic cell lining paste, the construction is carried out in two tamping methods: the paste area around the tank is larger, It is a flat type of tamping; the gap between the cathode carbon blocks is small, so the tamping area is small, and it is an interstitial type of tamping.
[0020] 1. Flat tamping method of paste around the tank:
[0021] The paste (2) around the tank is close to the tamping area of the electrolytic cell body (1), and the tamping area is relatively large. The paste needs to be layered and tamped tightly, and the thickness of the layers must meet the quality requirements.
[0022] The tamping machine (4) is equipped with different hammer heads for operation: the flat hammer head (3a) has a large hitting surface and a light hammer head, which is used for preliminary flattening of the paste, ...
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The invention provides a combined tamping construction method of aluminum electrolytic cell lining paste. Cell periphery paste is tamped through a plane type tamping method which includes the steps that firstly, a tamping machine is used in cooperation with a flat hammer to spread out the loose paste rapidly and conduct primary tamping forming; secondly, the primarily formed paste is tamped to reach the compactness according to the design requirement by using a square hammer; and finally, a nail type hammer is used for conducting processing of interlaminar joining surfaces during layering tamping so as to process the surface of the tamped and compacted paste into a concave spot shape. Paste between cathode carbon blocks is tamped through a gap-type tamping method which comprises the steps that firstly, the tamping machine is used for tamping the loosely-laid paste between the cathode carbon blocks to reach the compactness according to the design requirement through a narrow hammer; and secondly, a tooth-shaped hammer is used for processing the surface of the paste reaching the required compactness into a concave-convex shape. By means of the combined tamping construction method, the tamping compactness of the cell periphery plane paste and the tamping compactness of the paste between the cathode carbon blocks are improved; the paste is made to be tightly attached to the cathode carbon blocks, so that the interlaminar bonding strength of the paste on the periphery of a cell and between the cathode carbon blocks is enhanced.
Description
Technical field: [0001] The invention is applied in the field of electrolytic aluminum, and in particular relates to a combined tamping construction method for lining paste in an aluminum electrolytic cell. Background technique: [0002] The tamping of the paste around the aluminum electrolytic cell lining and the paste between the cathode carbon blocks is a very critical link in the construction of the electrolytic cell. The tamping quality of the paste directly determines the production capacity, operation stability and use of the electrolytic cell. life. [0003] The traditional paste tamping method is a single flat hammer reciprocating tamping. Because the tamping machine is a shaped product, the tamping force is fixed, so in actual use, the traditional tamping method has two obvious defects: [0004] 1. This single flat reciprocating tamping is prone to quality defects such as local delamination and low bonding strength between the layers of paste due to insufficient ...
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IPC IPC(8): C25C3/08
CPCC25C3/085
Inventor 杨利军吴郎
Owner MCC TIANGONG GROUP