Usine de réfractaires de Rongsheng
Rongsheng can provide SK clay fire brick, which can be divided into SK32, SK34, SK36, SK38, and SK40 refractory bricks according to the brand. Refractory bricks are mainly used for furnace lining, cheminée, chimney, et d'autres pièces. The refractory bricks produced by our factory are wear-resistant, corrosion-resistant, anti-flaking, low creep, bonne stabilité aux chocs thermiques, and the service life is 1.5 times that of ordinary products; they are mainly used in blast furnaces, hauts fourneaux à chaud, fours de grillage au carbone, carbon calcining furnaces, fours à coke, steel ladle, casting system, chaudières, cement kilns, glass kilns and various kiln linings and thermal equipment, etc., suitable for metallurgy, machinerie, matériaux de construction, fonderie, céramique, electricity, pétrole, chemical industry and other industries.
| Article | SK-30 | SK-32 | SK-34 | SK-35 | SK-36 | SK-37 | SK-38 | SK-40 |
| AL203 % (≥) | 30 | 35 | 38 | 45 | 55 | 65 | 70 | 82 |
| Fe203 % (≤) | 2.5 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
| Température de ramollissement sous charge, 0.2MPa, C (>) | 1250 | 1350 | 1370 | 1420 | 1450 | 1480 | 1530 | 1600 |
| Porosité(%) | 22-26 | 20-24 | 20-22 | 18-20 | 20-23 | 20-23 | 20-22 | 18-20 |
| Densité (g/cm³) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 | 2.25-24 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
| Normal temperature compressive strength, MPa (≥) | 20 | 25 | 30 | 40 | 45 | 50 | 60 | 70 |
Sizes of Sk clay fire bricks
Sk clay fire bricks have standard brick sizes of 230*110*25M, and various special-shaped refractory bricks, including curved bricks, flow steel bricks, etc., which can also be customized according to your drawings.
Characteristics of SK clay bricks
- Excellent corrosion resistance and wear resistance;
- Bonne résistance aux chocs thermiques;
- Good anti-stripping and chemical corrosion resistance;
- Price advantage compared with high alumina bricks
- Excellent thermal performance and acid resistance;
- Good dimensional stability at high temperature;
- Haute résistance mécanique;
SK clay brick production process
The main raw materials for making lightweight clay bricks are lightweight clay aggregate and clay powder, and the burnt material is sawdust. The raw materials are crushed and pulverized before mixing in a mixer. The order of adding materials: first add lightweight aggregate and clay, dry mix for 2 minutes, then add water, wet mix for 6 minutes, and then discharge. The moisture content of the mud is 17~20%.
After the mud is trapped for 24 heures, it is formed by a friction brick press. The bricks are dried in a tunnel dryer and fired in a downdraft kiln. The high firing temperature is 1250℃, and it is kept warm for 4 heures. It can be discharged from the kiln after natural cooling for 24 heures.
Uses of SK refractory bricks
SK30 fire clay bricks
SK30 bricks are mainly used for the lining of general heating furnaces, rotary kilns, chaudières, ordinary kilns, and other industrial kilns with low working temperatures. The refractoriness of SK30 bricks is relatively low and is suitable for occasions with low-temperature requirements.
SK32 fire clay bricks
SK32 bricks are used for furnace linings that require slightly higher temperatures, such as glass kilns, ceramic kilns, fours à chaux, etc.. SK32 bricks have a slightly higher refractoriness than SK30 and are suitable for medium-temperature applications.
SK34 clay fire bricks
SK34 bricks are used in high-temperature kilns such as steelmaking furnaces, aluminum alloy furnaces, and heat treatment furnaces in the petrochemical (boiler) industry. They are suitable for use at higher temperatures and have good resistance to chemical corrosion.
SK36 refractory clay bricks
SK36 bricks are widely used in high-temperature equipment such as blast furnaces, hauts fourneaux à chaud, and sintering furnaces in steel (haut fourneau, four électrique, louche), pétrochimique, verre, ciment, et d'autres industries. They have high thermal shock resistance and refractoriness and are suitable for use in higher temperatures and complex chemical environments.
SK38 fire-resistant bricks
SK38 bricks are used for linings in extremely high temperatures and harsh environments, comme les fours à arc électrique, high-temperature calciners, and other specialized high-temperature equipment. SK38 bricks have the highest fire resistance and chemical resistance, making them suitable for processes requiring extremely high temperatures and extreme conditions.
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