Magnesia Carbon Bricks (MgO-C) – BOF/EAF & Ladle Refractories | Wedge India
Making World Class High Performance Refractory Products Available in India at Lower Price
What are Magnesia Carbon Bricks?
Magnesia Carbon bricks combine high-purity MgO with flake graphite (fixed carbon) to deliver outstanding slag/metal corrosion resistance, thermal shock performance, and spalling resistance—ideal for Basic Oxygen Furnaces (BOF), Electric Arc Furnaces (EAF), converters and steel ladles. Wedge India supplies dense, extra-dense and “Super” series MgO-C grades engineered for long lining life in high-wear zones.
Key Benefits of Magnesia Carbon
High hot strength and excellent slag corrosion resistance for BOF/EAF slag line and impact zones.
Thermal shock & spalling resistance from optimized graphite/antioxidant design.
Extra-dense options for very high wear areas → longer campaign life.
Tailor-made specifications to suit furnace, process and zone.
Typical Applications & Zones
BOF/LD converters: mouth, slag line, trunnion, cone.
EAF: slag line, hot spots, safety linings.
Steel ladles: slag line, impact pads, bottom, safety lining (AMC/ASC options also available).
Featured MgO-C Grades & Specs
(Full datasheets available on request.)
| Grade | MgO % | Fixed C % | BD (g/cc) | A.P. % (orig) | A.P. % (coked @1000 °C) | CCS (kg/cm²) | MOR (kg/cm²) |
|---|---|---|---|---|---|---|---|
| WSILVERLINE-I | 98 | 4 | 3.02 | 5.5 | 11 | 450 | 150 |
| WSILVERLINE-II | 98 | 8 | 2.92 | 5.0 | 12 | 400 | 130 |
| WSILVERLINE-III | 98 | 13 | 2.88 | 5.5 | 12 | 350 | 120 |
| WSILVERSTAR-I | 97 | 4 | 3.08 | 4.0 | 11 | 450 | 150 |
| WORICARB-I | 97 | 4 | 3.02 | 6.0 | 12 | 500 | 150 |
| WORICARB-II | 96 | 8 | 2.96 | 6.0 | 12 | 450 | 140 |
| WOXIMAG-II | 94 | 8 | 2.95 | 7.0 | 14 | 400 | 130 |
| WMAGARC | 94 | 16 | 2.85 | 7.0 | 14 | 300 | 100 |
Data source: Wedge India product catalog tables for Magnesia Carbon bricks.
Notes: Super/extra-dense versions (e.g., SUPER WSILVERSTAR, SUPER WMAGARC) and many additional grades are available; specifications can be tailor-made to international requirements.
Supply Scope (related steelmaking refractories)
Slide gate plates/nozzles/well blocks, AMC/ASC ladle bricks, basic gunning & ramming mixes, low-cement high-alumina castables for repairs—available to match your MgO-C lining.
Magnesia Carbon Bricks
FAQs for Magnesia Carbon (MgO-C) Bricks
Q1. What are Magnesia Carbon (MgO-C) bricks?
Basic refractory bricks made from high-purity MgO and flake graphite for extreme slag/metal corrosion and thermal-shock resistance.Q2. Where are MgO-C bricks used?
BOF/LD converters, EAF slag lines/hot spots, and steel ladle slag/impact zones; also in high-wear furnace areas.Q3. What advantages do MgO-C bricks offer vs high-alumina bricks?
Superior slag non-wetting, thermal-shock resistance, and spalling resistance in basic steelmaking slags.Q4. What is the typical composition?
MgO ~94–98% with fixed carbon ~4–16% (plus antioxidants like Al/Si/Mg/B₄C depending on duty).Q5. What temperatures can they handle?
Typically suitable for ~1350–1600+°C service (grade/zone dependent).Q6. How do I select the right MgO-C grade?
Match to zone & slag: share slag basicity (CaO/SiO₂), temperature profile, drawings/BOQ, and target campaign life for a tailored recommendation.Q7. Do they require special mortar or preheating?
Use compatible basic/carbon-containing mortars and follow a controlled preheat/dry-out to minimize oxidation and thermal shock.Q8. What are common sizes/shapes?
Standards (straights, wedges, keys) and custom specials for slag line, mouth, cone; drawings per IS/GB/T supported.Q9. How should MgO-C bricks be stored and what’s the shelf life?
Store dry, on pallets, under cover; typical shelf life ~12 months in sealed packaging (check grade guidance).
