Refractory BricksMagnesia and basic bricks
Magnesia Chrome Brick
Basic magnesia–chrome bricks in four product types: ordinary, direct-bonded, fused semi-rebonded and fused rebonded, covering 23 grades for demanding basic-slag service.
- Grades / types
- 23 grades, MG-16A to DMG-12
- Specification tables
- 5: Ordinary magnesia chrome brick; Direct-bonded magnesia chrome brick; Semi-rebonded magnesia chrome brick (BMG-26 to BMG-20A); Semi-rebonded magnesia chrome brick (BMG-18 to BMG-12A); Fused rebonded magnesia chrome brick
Product overview
Magnesia chrome brick has high refractoriness, strong corrosion resistance to alkaline slag and good thermal shock resistance. It also tolerates acid slag to a degree and resists spalling.
RISING REFRACTORY supplies four types, each with its own specification table below.
Ordinary magnesia chrome brick
High refractoriness, strong resistance to alkaline slag, good thermal shock resistance, a degree of adaptability to acid slag and anti-spalling properties. Grades MG-16A to MG-8B.
Direct-bonded magnesia chrome brick
Made from low-impurity raw materials with direct bonding between the crystal phases. Low porosity, high crushing strength, strong wear resistance, corrosion resistance, thermal shock resistance and anti-spalling behaviour. Grades ZMG-16A to ZMG-6.
Semi-rebonded magnesia chrome brick
Dense, with low porosity and high strength at high temperature. Its thermal shock resistance is better than that of rebonded magnesia chrome brick, and it has strong resistance to slag erosion. Grades BMG-26 to BMG-12A.
Fused rebonded magnesia chrome brick
A high-grade product with excellent corrosion resistance. Its high-temperature performance lies between fused-cast magnesia chrome brick and sintered magnesia chrome brick. Grades DMG-26 to DMG-12.
Key characteristics
- High refractoriness
- Strong corrosion resistance to alkaline slag
- Good thermal shock resistance
- A degree of adaptability to acid slag
- Anti-spalling
- Four bonding types covering 23 grades
Technical data
| Property | Unit | MG-16A | MG-16B | MG-12A | MG-12B | MG-8A | MG-8B |
|---|---|---|---|---|---|---|---|
| MgO | % | ≥50 | ≥45 | ≥60 | ≥55 | ≥65 | ≥60 |
| Cr₂O₃ | % | ≥16 | ≥16 | ≥12 | ≥12 | ≥8 | ≥8 |
| Apparent Porosity | % | ≤19 | ≤22 | ≤19 | ≤21 | ≤19 | ≤21 |
| Cold Crushing Strength (CCS) | MPa | ≥35 | ≥25 | ≥35 | ≥30 | ≥35 | ≥30 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1650 | ≥1550 | ≥1650 | ≥1550 | ≥1650 | ≥1530 |
| Property | Unit | ZMG-16A | ZMG-12A | ZMG-8A | ZMG-6 |
|---|---|---|---|---|---|
| MgO | % | ≥60 | ≥68 | ≥75 | ≥75 |
| Cr₂O₃ | % | ≥16 | ≥12 | ≥8 | ≥6 |
| SiO₂ | % | ≤1.5 | ≤1.5 | ≤1.5 | ≤2.5 |
| Apparent Porosity | % | ≤18 | ≤18 | ≤18 | ≤18 |
| Cold Crushing Strength (CCS) | MPa | ≥40 | ≥45 | ≥45 | ≥45 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Property | Unit | BMG-26 | BMG-24 | BMG-22 | BMG-20A |
|---|---|---|---|---|---|
| MgO | % | ≥50 | ≥50 | ≥55 | ≥58 |
| Cr₂O₃ | % | ≥26 | ≥24 | ≥22 | ≥20 |
| SiO₂ | % | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 |
| Apparent Porosity | % | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crushing Strength (CCS) | MPa | ≥40 | ≥45 | ≥45 | ≥45 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Property | Unit | BMG-18 | BMG-16A | BMG-12A |
|---|---|---|---|---|
| MgO | % | ≥58 | ≥60 | ≥68 |
| Cr₂O₃ | % | ≥18 | ≥16 | ≥12 |
| SiO₂ | % | ≤2.0 | ≤2.0 | ≤2.0 |
| Apparent Porosity | % | ≤16 | ≤16 | ≤16 |
| Cold Crushing Strength (CCS) | MPa | ≥40 | ≥45 | ≥45 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 |
| Property | Unit | DMG-26 | DMG-24 | DMG-22 | DMG-20 | DMG-16 | DMG-12 |
|---|---|---|---|---|---|---|---|
| MgO | % | ≥50 | ≥50 | ≥55 | ≥58 | ≥62 | ≥68 |
| Cr₂O₃ | % | ≥26 | ≥24 | ≥22 | ≥20 | ≥16 | ≥12 |
| SiO₂ | % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Apparent Porosity | % | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crushing Strength (CCS) | MPa | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
Where Refractories Are Used
Industry
Steel & Iron
Refractories in iron and steel production are used in the blast furnace, hot blast stove, cast house and coke oven on the ironmaking side, and in the hot metal ladle, converter, electric arc furnace, steel ladle, tundish, RH degasser and reheating furnace on the steelmaking side. Material selection varies by operating zone and includes silica, high alumina, magnesia, magnesia-carbon, alumina-silicon carbide-carbon and silicon carbide products together with castables, ramming mixes and mortars.
Explore IndustryIndustry
Nonferrous Metals
Refractories for nonferrous metals divide into two groups. For aluminium they line the electrolysis cell side wall, corners and bottom, the smelter and the holding furnace, using silicon nitride bonded silicon carbide, carbon-based materials, low cement and non-stick castables and insulation. For copper, zinc, lead and nickel they are magnesia-chrome bricks in directly bonded, semi-rebonded and fused rebonded types.
Explore IndustryIndustry
Glass
Refractories in the glass industry line the melting tank, the superstructure, the working end and forehearth, the throat and the regenerator. Different furnace types take different materials, in fused, siliceous and magnesia groups: silica, clay, high alumina, sillimanite, mullite, fused mullite, zirconia-corundum, fused corundum and zirconium-containing refractory bricks.
Explore IndustryIndustry
Cement
Refractories in cement plants line the preheater, the calciner and tertiary air duct, the rotary kiln from the kiln inlet through the safety, transition and burning zones to the kiln outlet, the kiln hood and burner, and the grate cooler. RISING's kiln configuration tables assign alkali-resistant bricks and castables to the preheater system, silicon mullite, magnesia spinel and magnesia-chrome bricks to the kiln zones, and low-cement and steel-fiber castables to the kiln mouths, hood and cooler.
Explore Industry
Available grades, shapes and sizes
Available grades
- MG-16A
- MG-16B
- MG-12A
- MG-12B
- MG-8A
- MG-8B
- ZMG-16A
- ZMG-12A
- ZMG-8A
- ZMG-6
- BMG-26
- BMG-24
- BMG-22
- BMG-20A
- BMG-18
- BMG-16A
- BMG-12A
- DMG-26
- DMG-24
- DMG-22
- DMG-20
- DMG-16
- DMG-12
Related solutions
Services that work with this family of materials.
Related products
Refractory Bricks
Magnesia Brick
Basic refractory brick with strong resistance to alkaline slag, high refractoriness and high refractoriness under load, in seven grades from M89 to M98.
View ProductGradesM98 · M97A · M97B · M95A · M95B · M91 · M89
Refractory Bricks
Magnesia Zirconia Brick
Basic brick with a compact structure, high hot strength and excellent kiln-coating adhesion, for cement kiln firing zones and glass kiln regenerators. Grades MZ8, MZ10 and MZ13.
View ProductGradesMZ8 · MZ10 · MZ13
Refractory Bricks
Magnesia-Alumina Spinel Brick
Magnesia spinel brick with uniform expansion and contraction under temperature fluctuation, better thermal shock resistance, refractoriness under load and strength than magnesia brick. Grades MLJ-75 to MLJ-90.
View ProductGradesMLJ-90 · MLJ-85 · MLJ-80 · MLJ-75
Refractory Bricks
Chrome Corundum Brick
Chrome–corundum brick with high refractoriness, high strength, high refractoriness under load and excellent thermal shock resistance, resistant to steel slag, non-ferrous slag, gasifier slag and glass melts. Grades GGZ-5 to GGZ-30.
View ProductGradesGGZ-5 · GGZ-12 · GGZ-20 · GGZ-30
Technical Consultation
Discuss your requirement with our technical team
Share your application, service conditions and quantities. Our engineers confirm the suitable grade and return a structured quotation.
Request a quote for prices and lead times, a TDS for the grade’s data sheet, or technical information for a selection or specification question.
Technical data sheets are supplied on request with the quotation.Request TDS