Combined tamping construction method of aluminum electrolytic cell lining paste

Abstract

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 ...

AI Technical Summary

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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