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How to manage ladle lining bricks gaps during installation

[2022-06-24]

1. Staggered joints

Staggered masonry or staggered joint masonry is the basic requirement for masonry of industrial furnaces. Staggered joints can not only improve the integrity and structural strength of the masonry, but also reduce, block or even avoid the penetration of high-temperature melt to the joints for ladle and refined ladle brick linings that are in direct contact with high-temperature molten steel and slag. For this purpose:

(1) The vertical joints between the upper and lower brick layers of the tank bottom must be staggered, and the rotation angle of the masonry direction is greater than 45.

(2) The safety lining of the tank wall generally adopts two circles (or more than two circles) of half-thick bricks to be erected vertically, and the vertical vertical joints of each brick layer in each circle are staggered; the horizontal and vertical vertical joints of each brick layer in the two circles need to be staggered;

(3) For the side layer and vertical layer of the working lining of the tank bottom, the masonry directions of the brick layers are perpendicular to each other, and the vertical vertical joints between the brick rows are staggered;

(4) The radial vertical seam of the working lining of the tank wall shall not be repeated in three layers.

2. Reduce radiation vertical slits

As already mentioned, the high temperature molten steel and slag in the ladle flow as follows during operation:

(1) Flow from top to bottom during the casting process.

(2) Flow up and down due to the effect of temperature difference at rest.

(3) Blow argon, vacuum degassing and electromagnetic stirring to flow up and down (even in all directions).

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