Magnesia Carbon Brick for Arc Furnace is a premium refractory material designed to withstand the extreme conditions of steelmaking and high-temperature industrial processes. Made from high-purity fused or sintered magnesia and high-quality flake graphite, these bricks offer excellent resistance to slag penetration, high thermal shock stability, and superior high-temperature performance. With non-oxide additives and carbonaceous binders, magnesia carbon bricks are widely used in converters, AC/DC arc furnaces, ladle slag lines, and refining furnaces.
Technical Specifications
| Item | Value |
|---|---|
| MgO (%) | ≥ 76 |
| C (%) | 10–18 |
| Apparent Porosity (%) | ≤ 5 |
| Bulk Density (g/cm³) | ≥ 2.85 |
| Cold Crushing Strength (MPa) | ≥ 35 |
| Modulus of Rupture (MPa) | ≥ 5 |
Key Features
Strong Slag Resistance – Effectively prevents slag infiltration during steelmaking.
Low Temperature Creep – Ensures dimensional stability under high loads.
Excellent Thermal Shock Resistance – Withstands rapid heating and cooling cycles.
High-Temperature Strength – Maintains performance at temperatures exceeding 1600°C.
Long Service Life – Reduces furnace downtime and maintenance costs.
Typical Applications
Lining of AC and DC Arc Furnaces in steelmaking.
Converter lining and hot spots of high-power electric furnaces.
Refining furnace linings outside the main furnace.
Slag line of ladles and steel drums.
Other high-temperature industrial furnaces requiring slag and thermal shock resistance.
Production Details
Raw Materials Selection
High-purity fused magnesia or sintered magnesia as the main base material.
Natural flake graphite as the primary carbon source for enhanced slag resistance and thermal conductivity.
Additives and Binders
Organic binders such as coal tar, petroleum asphalt, or phenolic resins.
Antioxidants like metal powders to improve oxidation resistance.
Manufacturing Process
High-pressure shaping to ensure brick density and strength.
Non-fired process using carbonaceous binders for improved durability.
Strict quality control at each production stage.
Packing and Shipping Details
Packaging: Standard wooden pallets with protective film and corner reinforcement.
Marking: Each pallet labeled with product name, grade, batch number, and net weight.
Shipping: Available by sea or rail with customizable logistics solutions.
Lead Time: Typically 15–25 days depending on order quantity.
Supply Ability: Large-scale production capacity to meet bulk orders.
Frequently Asked Questions (FAQ)
Q1: What is the service life of magnesia carbon bricks in arc furnaces?
Service life varies depending on furnace conditions but typically ranges from 20 to 40 heats under normal steelmaking operations.
Q2: What is the difference between fused magnesia and sintered magnesia in production?
Fused magnesia provides higher bulk density and larger crystal size, resulting in superior slag resistance compared to sintered magnesia.
Q3. Can magnesia carbon bricks be customized according to furnace design?
Yes, we can provide customized shapes and sizes based on your drawings and operating requirements.
Q4: Do you provide quality certificates?
Yes, we supply ISO certifications, production reports, and test results to guarantee product quality.
Q5: How can I place an order?
You can contact our sales team with your specifications. We provide technical consultation, samples, and flexible payment terms.
