Anhydrous tap hole mix for blast furnace tap hole
Anhydrous tap hole mix for blast furnace
Anhydrous tap hole mix adopts the technology of raw material homogenization and micropowder pre-mixing, and uses special composite raw materials as admixtures. It has good corrosion resistance, filling and sintering properties, and has a forced repair function for iron cracks. The mouth quickly produces a certain ability to resist mechanical and chemical damage, and the high temperature strength has a good bond with the residual mud, and it is easy to open when tapping and ensures that the molten iron and slag pass quickly. The erosion is small, which is the flow of molten iron and slag. It is stable and smooth, thus inhibiting the circulation of slag and molten iron in the furnace, reducing the damage of the lining bricks on the bottom side of the furnace around the tap hole, well protecting the furnace lining and hearth in the tap hole area of the blast furnace, and being beneficial to the extension of the blast furnace. Furnace life.
Project |
index |
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PN-1 |
PN-2 |
PN-3 |
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Al2O3%≥ |
20 |
25 |
30 |
|
SiC+C%≥ |
30 |
30 |
30 |
|
Bulk density(g/cm3) |
1350℃×3h |
≥1.65 |
≥1.70 |
≥1.80 |
Heating permanent wire change rate% |
-1.5~+1.5 |
-1.5~+1.5 |
-1.5~+1.5 |
|
Cold compressive strength/MPa≥ |
≥8.0 |
≥10 |
≥15 |
|
Recommended for blast furnace type |
1000m3 |
1000m3~2500m3 |
2500m3min |
Advantages of anhydrous taphole clay for blast furnace taphole:
1. It is easy to play mud, and the pass rate of the depth of the iron mouth is more than 98%.
2. Quick-drying, quick-hardening performance, high strength, short withdrawal time.
3. Easy to open, the one-time opening rate reaches more than 98%, which can prevent the crack of the mud hole.
4. The mud bag in the shape of mushroom head can be formed in the hearth, which is beneficial to protect the hearth and the furnace wall.
5. Good corrosion resistance to slag iron, erosion resistance, slow hole reaming and long tapping time.
6. The product is environmentally friendly and non-polluting, and has no physical harm to the operator, improving the working environment in front of the furnace.
Refractory wet mud used to block the iron outlet can be divided into two categories: water cannon mud and waterless gun mud. On large and medium -sized blast furnaces on high top pressure and high degree of smelting.
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Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories.
The alkali-resistant brick for cement kiln has the characteristics of strong alkali erosion resistance, good thermal shock resistance and high cost performance.
Ceramic wear resistant castable is a special material and is a new type of material developed recently. It not only meets the needs of national defense cutting-edge products and high-tech development, but also meets the requirements of the rapid development of the national economy. Therefore, it is easier for users to accept than other materials, so it develops rapidly.
Refractory wet mud used to block the iron outlet can be divided into two categories: water cannon mud and waterless gun mud. On large and medium -sized blast furnaces on high top pressure and high degree of smelting.
Corundum refractory castable has the characteristics of high strength and good fluidity, which is convenient for construction. It is mainly used for the parts that are easy to be washed and worn, such as the combustion chamber, separator and flue of circulating fluidized bed boiler.
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