Refractories
FITCO Company: Refractories in Iran
The sales engineering team at FITCO is pleased to assist you in selecting the ideal refractory material and ensuring its correct installation. Leveraging our experience and understanding of your specific needs, combined with the support of our world-class vendors’ technical team, we offer optimal solutions and customized options tailored to your unique requirements.
Our approach adheres to a single principle: every product must precisely meet customer needs, with customer goals and expectations prioritized.
Collaborating with RefraTechnik
The sales engineering team of FITCO is very happy to assist you in selecting the ideal refractory material and its correct installation. FITCO, taking advantage of its experiences and understanding of your needs, and with the support of Refratechnik’s technical team, provides optimal and, if necessary, customized solutions that exactly match your specific needs.
Our approach follows a single principle: each product must exactly match the customer’s needs and prioritize the customer’s goals and expectations.
Refractories for Electric Arc Furnaces
Many well-known steel producers and foundries use these products to line their modern electric arc furnaces. Years of practical application have demonstrated the operational value 100% pure fused magnesium oxide products, which contribute to extending furnace lifespan and reducing maintenance operations, resulting in significant cost savings. High-performance refractory binders complement the refractory products in this sector.
Refractories for Steel Ladles
Steel ladles have evolved from mere molten metal transport equipment into metallurgical reactors for modern steel production. Consequently, the demand for refractory linings has increased. Today, some steelmakers use ladles predominantly lined with high-purity fused magnesium bricks. For areas exposed to impact, AMC grades are the best choice.
- Wall and Bottom Area: REFRAFLEX®-bonded MACARBON® bricks with low-carbon fused magnesium oxide.
- Slag Zone: REFRAFLEX®-bonded MACARBON® bricks with higher carbon content fused magnesium oxide.
- Impact Area: REFRAFLEX®-bonded MACARBON® with antioxidants and/or steel reinforcing fibers, or high-alumina carbon bricks (ALUCARBON®).
- Permanent Lining: Bauxite-calcined coatings.
Special Products for Blast Furnace Refractory Linings
Blast furnace refractories are exposed to CO gases, alkaline materials, and various mechanical wear. Some products in this category include:
- New and Repair Coatings:
- Dense shotcrete products (REFRAJETCRETE®)
- Self-flowing filler compounds (REFRASELFCAST®)
- Hot Repairs:
- Spray lining (REFRAJET®)
- Cement-free shotcrete (REFRAJETCRETE® Nanobond)
Refractories for Converters
Choosing refractory products for converter linings requires studying the operational conditions at customer facilities, installation conditions, and converter status, among other factors. The installation time of refractories is also considered an operational parameter. Depending on the lining area, wear reasons can vary, but major wear causes in converters are thermal, chemical, and mechanical effects.
- Converter Floor Lining:
- For floor cleanings and molten metal turbulence, highly wear-resistant materials are used. During charging, mechanical wear can also occur. FITCO offers excellent repair options, including self-flowing materials that mold only under their weight and flow easily to fill complex shapes.
- Converter Floor-to-Wall Connection:
- The connection between the side walls and the converter floor is made with moldable materials that must provide high strength.
- Lower Cone:
- The side wall of the converter exerts additional mechanical stress on the floor, making the repair of the lower cone typically more complex.
- Main Cylinder:
- This section is usually in contact with the slag line and experiences the highest thermal stresses. Materials resistant to corrosive slag and with high thermal conductivity are used.
- Converter Taphole:
- Frequent formations of molten metal at the discharge valve and subsequent cleaning create mechanical stress, requiring high-strength, wide-temperature-range refractories.
- Permanent Lining:
- Permanent refractories must last several replacement cycles of external linings. The key feature of this lining is reliable performance in emergencies.
Sintering Furnaces
For new lining or repair of sintering furnaces and hoods, REFRACAST type materials or REFRAJET® spray mixtures can be used.
For new lining or repair of gas collection pipes, burner gas nozzles and burner ducts, seamless and integral products complying with the requirements for CO resistance, acid resistance, etc.
Blast Furnace
FITCO provides specific products for blast furnace runners, meeting the technical requirements for refractory linings of each runner section:
- Main Runner:
Repair shotcrete (REFRAJET®)
Slamming mixes (REFRARAM®),
Prefabricated components for permanent high-security lining (REFRACAST®)
Fast-drying, abrasion-resistant lining (REFRACAST Hydrobond®)
- Slag Runner:
Prefabricated or on-site products:
- High SiC molding materials (REFRACAST®) with exceptional service life.
- Specialized C/SiC-reinforced slamming mixes (REFRARAM®). These materials are available either as ready-mixed wet granules or as dry mixes for on-site preparation.
- Hot Metal Runner:
- Prefabricated refractory parts for various runners.
- Moldable and fast-drying material (REFRACAST® Hydrobond).
- Discharge Runners:
Apart from mechanical wear, thermal shock is the main cause of wear of refractory materials. Moldable and fast-drying materials (REFRACAST® Hydrobond) are designed to combat this condition.
Coke Oven
Special coatings for coke oven doors are made from heat-shock-resistant concretes. Special compositions are used for repairing frame joints, oven walls, door areas, and regions around riser and feeder channels. Specialized chemical concretes are used for localized repairs on oven floors, as well as for repairing worn areas and premature wear, especially for floor repairs and hot repairs.
