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04
2023
-
09
How to choose high aluminum refractory bricks
Some users may not know how to choose high aluminum refractory bricks, in fact, this is not similar to clay refractory bricks, and the price is a little higher.
Some users may not know how to choose high aluminum refractory bricks, in fact, this is not similar to clay refractory bricks, and the price is a little higher. In this regard, I would like to say that high aluminum refractory bricks and clay refractory bricks have their own advantages, depending on their needs to choose the right product.
In fact, in the production process, high alumina refractory bricks and clay refractory bricks molding production method is basically the same, just some process parameters are different. There are also crushing, mixing, molding, drying, firing, inspection, packaging and other processes. The compressive stress of high alumina refractory bricks has a better ability to withstand low temperatures, but it is slightly reduced at high temperatures, so the kiln stack is less than 1m.
The slag resistance of high alumina clay bricks increases with the increase of Al2O3 content. However, its resistance to alkali slag is lower than that of alkaline refractories. The reduction of impurity content is favorable to improve the slag resistance. At the same time, improving the density and reducing the porosity of high alumina refractory bricks are also good measures to improve their slag resistance. In addition, high alumina refractory bricks have higher thermal conductivity than clay refractory bricks, which is related to the reduction of the glass phase and the increase of mullite crystals or corundum crystals in high alumina products. High-alumina refractory bricks are mainly used for the lining of blast furnaces, hot blast stoves, electric furnace roofs, blast furnaces, reflector furnaces and rotary kilns. In addition, high alumina refractory bricks are also widely used as heat storage lattice bricks for flat furnaces, casting system plug bars, water spout bricks and so on.
These are the reasons for choosing high alumina refractory bricks, because what each person needs is different, so it will be easier to choose.
How to choose high aluminum refractory bricks
2023-09-04
Some users may not know how to choose high aluminum refractory bricks, in fact, this is not similar to clay refractory bricks, and the price is a little higher. In this regard, I would like to say that high aluminum refractory bricks and clay refractory bricks have their own advantages, depending on their needs to choose the right product.
In fact, in the production process, high alumina refractory bricks and clay refractory bricks molding production method is basically the same, just some process parameters are different. There are also crushing, mixing, molding, drying, firing, inspection, packaging and other processes. The compressive stress of high alumina refractory bricks has a better ability to withstand low temperatures, but it is slightly reduced at high temperatures, so the kiln stack is less than 1m.
The slag resistance of high alumina clay bricks increases with the increase of Al2O3 content. However, its resistance to alkali slag is lower than that of alkaline refractories. The reduction of impurity content is favorable to improve the slag resistance. At the same time, improving the density and reducing the porosity of high alumina refractory bricks are also good measures to improve their slag resistance. In addition, high alumina refractory bricks have higher thermal conductivity than clay refractory bricks, which is related to the reduction of the glass phase and the increase of mullite crystals or corundum crystals in high alumina products. High-alumina refractory bricks are mainly used for the lining of blast furnaces, hot blast stoves, electric furnace roofs, blast furnaces, reflector furnaces and rotary kilns. In addition, high alumina refractory bricks are also widely used as heat storage lattice bricks for flat furnaces, casting system plug bars, water spout bricks and so on.
These are the reasons for choosing high alumina refractory bricks, because what each person needs is different, so it will be easier to choose.
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