A kind of anti -shock stitching magnesium carbon brick and its production process

Abstract

The invention discloses a thermal shock-resistant spliced ​​magnesia-carbon brick, which comprises a hollow metal cylinder with an open front end, a front brick body and a rear brick body. The front brick body and the rear brick body are respectively inserted into the front end of the hollow metal cylinder. and the rear end, the hollow metal cylinder is provided with an expansion agent and a driving slider, a pair of extruding blocks are arranged in the front protruding part of the front brick body, and a capsule containing blank mud is arranged in the rear end groove of the rear brick body . The hollow metal cylinder has good thermal conductivity, which can quickly transfer the heat absorbed by the solid position of the magnesia-carbon brick, reducing the heat transferred to the inner wall of the rotary kiln, and the hollow metal cylinder is equipped with an expansion agent, which makes the whole magnesia-carbon brick thermal insulation effect. It is good to ensure that the temperature in the kiln will not be lost. In addition, after the magnesia-carbon brick is heated up, the two extrusion blocks in the front brick body extrude the capsule in the brick body, and the mud in the capsule is extruded and filled with the magnesia-carbon brick. At the connection between the bricks, the mud is sintered and solidified under high temperature conditions, which strengthens the connection strength between adjacent magnesia-carbon bricks.

Description

Technical field: [0001] The invention relates to the technical field of refractory materials, in particular to a thermal shock-resistant spliced ​​magnesia-carbon brick and a production process thereof. Background technique: [0002] Magnesia-carbon bricks, commonly known as refractory bricks, are refractory materials fired from refractory clay or other refractory raw materials. They can be used as high-temperature building materials and structural materials for building kilns and various thermal equipment, and can withstand various physical properties at high temperatures. Chemical changes and mechanical effects, such as refractory clay bricks, high alumina bricks, silica bricks, magnesia bricks, etc., refractory bricks can also be made by splicing and firing. [0003] The magnesia-carbon brick body needs to withstand large temperature changes and heat flow shocks during use, so it needs to have good thermal shock resistance. It is also necessary to ensure that the magnesi...

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Problems solved by technology

[0003] The magnesia-carbon brick body needs to withstand large temperature changes and heat flow shocks during use, so it needs to have good thermal shock resistance. In addition to the requirement that the refractory bricks have a tight structure and no cracks during masonry, It is also necessary to ensure that the magnesia-carbon brick itself is not easy to crack to prevent the occurrence of fire. In addition, it is also required to protect the heat in the kiln as much as possible to prevent heat loss; and because the magnesia-carbon brick is always in a high-temperature working environment, the magnesia-carbon brick One side is also close to the inner wall of the rotary kiln. After the magnesia carbon brick absorbs a large amount of heat, it will be transmitted to the inner wall of the rotary kiln. Although the hollow magnesia carbon brick can have air circulation in the inner cavity, the solid part of the magnesia carbon brick stores The heat still cannot be channeled, which will cause the wall of the rotary kiln adjacent to it to absorb a large amount of heat, which will easily deform the inner wall of the rotary kiln, thus affecting the entire wall layer of magnesia-carbon bricks.

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