When there is no finished refractory slurry and it needs to be prepared on site, it should be accurately measured and mixed evenly, and the slurry should be used up during the shift;
The masonry should be laid with staggered joints, and the brick joints of the adjacent rows and the upper and lower adjacent brick layers in the same brick layer should not be overlapped;
The masonry should be horizontal and vertical, with a smooth and flat surface, and try to avoid misalignment;
The slurry in the brick joints of wet masonry should be full and the surface should be pointed, and the brick joints of dry masonry should be filled with dry refractory powder, and the brick surface should be clean;
Bricks with a width and length less than 1/2 of the original brick or For bricks with a thickness less than 2/3 of the original brick, the processed surface and defective surface of the brick should not face the inner surface of the furnace and flue gas channel;
When building the furnace bottom on the refractory castable base, the base can only be built after it reaches the design strength, and it should be leveled according to the design elevation, and the masonry should be stable and the surface should be flat;
The brick joint thickness and masonry allowable deviation of each part of the masonry should comply with the design and relevant specifications;
The setting of masonry expansion joints should comply with the following provisions: the gap, structure and distribution position of masonry expansion joints should comply with the design According to the regulations, when there is no regulation in the design, the average gap size of the expansion joint per meter of masonry can be reserved according to the following data: clay brick masonry: 5-6mm; high alumina brick masonry: 7-8mm; corundum brick masonry: 9-10mm; magnesia aluminum brick masonry: 10-11mm; silica brick masonry: 12-13mm; magnesia brick masonry: 10-14mm
The location of the expansion joint should avoid the stress-bearing parts, the furnace frame and the holes in the masonry; the expansion joints of the inner and outer layers of the masonry should not be They can penetrate each other, and the upper and lower layers should be staggered; when the expansion joint of the refractory masonry working surface is connected with the insulating masonry, the insulating bricks there should be replaced by high-alumina bricks; the expansion joint should be set evenly and straight, the joint should be kept clean, and filled with materials as required; there should be gaps between the brick support plate and the masonry below, and between the upper masonry and the lower masonry of the brick support plate. When the expansion joint under the brick support plate cannot meet the design size, the bricks under the brick support plate can be processed, and the thickness of the bricks after processing should not be less than 2/3 of the original brick thickness.
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