Magnesium brick (magnesite brick) is an alkaline refractory material with a magnesia content of more than 90% and a periclsite as the main phase. Generally, it can be divided into two categories: sintered magnesia brick (also known as burnt magnesia brick) and chemically combined magnesia brick (also known as non-burned magnesia brick). Magnesia bricks with high purity and high firing temperature are called direct-bonded magnesia bricks because of the direct contact of the magnesite grains. The bricks made of fused magnesia are called fused and re-combined magnesia bricks. Generally, it can be divided into two categories: sintered magnesia brick (also known as burnt magnesia brick) and chemically combined magnesia brick (also known as non-burned magnesia brick). Magnesia bricks with high purity and high firing temperature are called direct-bonded magnesia bricks because of the direct contact of the magnesite grains. The bricks made of fused magnesia are called fused and re-combined magnesia bricks.

Magnesia bricks have high refractoriness, good alkali slag resistance, high load softening start temperature, but poor thermal shock resistance. The sintered magnesia brick is made of brick and magnesia brick, and after being pulverized, compounded, kneaded and formed, it is fired at a high temperature of 1550 to 1600 ° C, and the firing temperature of the high-purity product is above 1750 ° C. The non-casting magnesia brick is made by adding a suitable chemical binder to the magnesia, mixing, forming and drying. According to the experience of producing magnesia bricks, Magnesia Brick Company has made the following provisions for refractory brick masonry in order to make full use of kiln lining materials, ensure the service life of kiln lining materials and prolong service life:

1. Carefully clean the dust and slag from the inner wall of the kiln shell;

2, there should be no unevenness in the kiln shell; +

3. The gray joint between the magnesia brick and the brick is controlled at 1.5mm~2mm;

4, the application of the glue should be even and full, do not have the phenomenon of lack of pulp. Uniformly apply the cement, and use the masonry to shake the cement to make the cement can be extruded in a small amount;

5, the lining of the kiln should be flat and can not have a wrong platform, stress to avoid misalignment, tilt, uneven gray seam, centering, heavy seams, through seams, open mouth, empty, crevices, serpentine bends, masonry bulging And common problems such as mixing;