The general regulations for laying furnace bricks are as follows:

(1) Before laying furnace bricks, the dimensions and relevant elevations of each part of the masonry should be checked according to the center and elevation of the furnace

(2) The masonry should be built with staggered joints, the mud in the masonry brick joints should be full, and the surface should be jointed. When dry laying, in addition to the design regulations, generally should be filled with dry refractory powder.

(3) furnace bricks shall not be cut and chiseled on the masonry. When laying bricks, use a mallet or a rubber pad hammer for alignment. After the mud has dried and solidified, the masonry shall not be beaten.

(4) The processing surface of the furnace brick should not face the inner surface of the furnace or the furnace channel or the expansion joint

(5) When laying the middle section of furnace bricks or reworking and dismantling furnace bricks, a stepped stubble should be made.

(6) The processed bricks of furnace brick masonry shall not be processed into bricks with width less than 1/2 or furnace bricks with thickness less than 2/3

(7) The composite furnace bricks should be built according to the inner diameter, size and elevation of the assembly.

(8) The masonry flue is only allowed when there are expansion joints between the flue and the chimney or other buildings. Settlement joints should be protected from breathability and deep water.

(9) For the vault of the underground flue, only after the backfill is outside the wall, the lock brick can be driven.

(10) furnace brick masonry and thermal insulation masonry should be prevented from getting wet during the process from construction to production.

(1) Furnace bottom masonry

The bottom furnace bricks are divided into dead bottom and live bottom. When masonry is built, the bottom is built first and then the wall is built, and the wall is pressed on the bottom. This is called a dead bottom. Build the wall first and then build the bottom, this bottom is called the living bottom

Bottom laying generally starts from the middle of the furnace to both ends. When laying the top bricks of the bottom of the furnace bottom, channel and flue, it is generally horizontally laid, which is perpendicular to the flow direction of liquid metal, slag and gas. According to the production requirements of the furnace, the bottom of the furnace is also built into a reverse arch.

(2) Furnace wall masonry

1. Straight wall masonry

When laying a wall, within the same brick layer, the brick joints of the front and rear adjacent brick columns and the upper and lower adjacent brick layers should be staggered. The masonry of the walls is required to be flat and vertical. In order to maintain the level of the brick layer, the wire should be pulled when building the wall. Check the flatness of the masonry surface with a level and a ruler, and check the verticality or inclination of the wall with a control template. When the masonry wall is interrupted, the platform should be retreated in a step-like manner. When building a brick stack, the vertical joints of the upper and lower adjacent brick layers should be staggered.

When the furnace temperature is less than 1250°C, the holes in the wall with a width of less than 450mm can be covered with furnace bricks protruding layer by layer, and the protruding part of each layer of furnace bricks shall not exceed 75mm.