High Alumina Refractory Brick
High Alumina Hanging Brick
High-alumina anchoring bricks
Anchor bricks, also known as hanging bricks, are divided into wall bricks and top anchor bricks. Generally, the top hanging bricks are with holes, while the wall bricks are without holes.
Anchor brick Al2O3 content of 55% or more, there are users require anchor brick alumina content of 75%, 75 of the brick load softening temperature of 1550 ℃, but in the actual use of the process, can not only aluminum content of high anchor brick is good, the key is the flexibility of the anchor brick, is * important. In many cases, the choice of alumina content in 55%, because 55% content of the anchor brick flexibility is better.
Therefore, in the hanging brick manufacturers, will produce some aluminum oxide content in 55% of the brick, in case of emergency. Outside, there are also anchoring bricks for anchoring castables, but no matter what castables, anchoring brick performance should be consistent with the castables material, so that the expansion and contraction of the same, in order to form a tight bond with the castables, to extend the life of the furnace lining.
In the process of anchoring brick arrangement and masonry should follow the following principles:
1, anchored brick arrangement is based on temperature changes and the size of the area to determine the distribution of the number, generally is not less than 6 / m2.
2, in the masonry must have to carefully check the anchoring brick, look at the anchoring brick anchoring holes in the overall strength of the brick anchoring cracks can not be used, if there are cracks in the holes, resolutely discard the brick.
3, in the masonry to close to the anchoring brick position, should be pre-lined brick, to see to determine the exact location of the anchoring brick, and then use a wire brush to carefully clean the welding parts of the metal shell, the use of welding rods suitable for welding parts, firmly welded anchoring pipe.
4, anchored brick masonry is completed, remember to insert the anchoring hook, and then use the refractory fiber felt to fill the empty attack and plug tightly, which will form a great protection for the anchoring parts.
Anchor brick flexibility is very important, but some steel mills with anchor brick requirements are higher, to add some special ingredients to regulate the brick toughness, but in this case, the price of hanging bricks is relatively high, the current market is not used much, due to the anchor brick dosage is not large, and the mold is difficult to use before you use it, it is necessary to pre-customize to be good.
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