Inside lining building method for aluminium electrolysis two-man ladle

Abstract

The invention relates to a technology to heavily repair the ladle lining of 5t in an aluminum electrolytic industry, in particular to an aluminum electrolytic ladle lining building method which can effectively improve the service life of the aluminum electrolytic ladle lining. The building method disclosed by the invention includes the following steps: 1) eliminating the inside of the ladle shell; 2) building the inner side of the cylinder part of the ladle shell alternatively according to wide type high aluminum special shape bricks and narrow type high aluminum special shape bricks; 3) building the bottom surface of the ladle shell by high aluminum bricks longitudinally and alternatively; 4) adopting high intensity bonding to bond the gaps of the special shape bricks at the cylinder and the bottom part of the ladle shell; 5) welding a hook nail first on the cover and the mouth parts of the ladle; 6) pouring the cover and the mouth of the ladle by high-aluminum low-cement fire-resistant castable material; 7) drying the ladle lining. The invention improves the service life of the ladle lining of 5t, meets the manufacture requirements, simultaneously saves a plurality of repairing cost and reduces the environment pollution. The invention is suitable for the building of the ladle lining in the aluminum electrolytic industry and the building of the linings of any other furnace type.

Description

technical field [0001] The invention relates to a technique for overhauling the inner lining of a 5t ladle in the aluminum electrolysis industry, in particular to a method for building the inner lining of an aluminum electrolytic ladle that can effectively improve the service life of the inner lining of an aluminum electrolytic ladle. Background technique [0002] For the overhaul of the original 5t ladle lining of aluminum electrolysis, refractory bricks are generally used for masonry, and refractory castables are used for wrapping. [0003] There are following disadvantages and deficiencies in this way: [0004] (1) The front and back of clay refractory bricks are both flat, and they are not tightly combined with the inner wall of the ladle when they are built on the inside of the ladle shell, resulting in insufficient strength. The main cause of lining damage. [0005] (2) There are certain deficiencies in the baking process. Wood is burned in the bag for baking, and th...

AI Technical Summary

Problems solved by technology

[0004] (1) The front and back of clay refractory bricks are both flat, and they are not tightly combined with the inner wall of the ladle when they are built on the inside of the ladle shell, resulting in insufficient strength. The main cause of lining damage

[0005] (2) There are certain deficiencies in the baking process. Wood is burned in the bag for baking, and the drying area is uneven, so it is impossible to use strict baking curves for baking

[0006] (3) The service life of the inner lining of the ladle is short, which restricts the normal production of aluminum electrolytic casting to a certain extent and increases the cost per ton of aluminum

Therefore, if we do not try to improve the life of the ladle, it will hinder the normal production of aluminum electrolysis to a certain extent, resulting in a lot of waste

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