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How do you know how to use refractory bricks?
High-aluminum brick is a kind of refractory brick, which is used for laying blast furnace, hot blast stove, electric furnace top, blast furnace, reverberatory furnace, rotary kiln lining and so on. The following small series will introduce the construction process of high alumina bricks for everyone.
How to use high alumina bricks:
1. The lining of important parts and complex parts should be pre-built. A lining that is extremely complex in structure and has a large amount of refractory brick processing can be considered as a castable lining.
2. Exposed metal parts left in the brick lining, including the bricks, bricks and other parts, should be closed with special-shaped bricks, castables or refractory fibers, and should not be directly exposed to the hot kiln gas during use.
3. Anchor bricks are structural bricks of masonry, which should be left in accordance with the design regulations and must not be missed. Cracked anchor bricks should not be used around the hanging holes. Metal hooks should be flat and hanged. The hanging holes and the hooks cannot be stuck, and the remaining gaps can be filled with refractory fibers.
4. The expansion joints in the refractory brick lining must be left as designed and must not be missed. The width of the expansion joint should not be negatively toleranced. No hard masses should be left in the joint, and the seam should be filled with refractory fiber to avoid the phenomenon of overfilling. Generally, there is no expansion joint in the heat insulation layer.
5. When laying bricks, joint bricks and curved bricks, if the refractory bricks can not meet the sealing requirements, the refractory bricks should be finished by the brick cutting machine, and the hand-processed refractory bricks should not be used. Dimensions of processed refractory bricks: The topping bricks under the rotary kiln and the brick slab should be not less than 70% of the original refractory bricks; in the plane joint bricks and curved bricks, it should not be less than 1/2 of the original bricks. Must be locked with the original brick.
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