Ordinary Magnesia Chrome Bricks

Ordinary magnesia chrome bricks feature high refractoriness, strong resistance to alkaline slag corrosion, good thermal stability, a certain degree of adaptability to acidic slag, and anti-spalling properties.

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Physical and Chemical Indicators

Item	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 (MPa)	≥ 35	≥ 25	≥ 35	≥ 30	≥ 35	≥ 30
Refractoriness Under Load (0.2MPa, ℃)	≥ 1650	≥ 1550	≥ 1650	≥ 1550	≥ 1650	≥ 1530

Direct-Bonded Magnesia Chrome Bricks

Direct-bonded magnesia chrome bricks have few impurities with direct bonding between crystal phases. They feature low porosity, high cold crushing strength, strong wear resistance, excellent corrosion resistance, good thermal shock resistance, and anti-spalling properties.

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Physical and Chemical Indicators

Item	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 (MPa)	≥ 40	≥ 45	≥ 45	≥ 45
Refractoriness Under Load (0.2MPa, ℃)	≥ 1700	≥ 1700	≥ 1700	≥≥ 1700

Fused Semi-Rebonded Magnesia Chrome Bricks

Semi-rebonded magnesia chrome bricks have few impurities with direct bonding between crystal phases. They feature low porosity, high cold crushing strength, strong wear resistance, excellent corrosion resistance, good thermal shock resistance, and anti-spalling properties.

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Fused Semi-Rebonded Magnesia Chrome Bricks

Physical and Chemical Indicators

Item	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 (MPa)	≥ 40	≥ 45	≥ 45
Refractoriness Under Load (0.2MPa, ℃)	≥ 1700	≥ 1700	≥ 1700

Fused Rebonded Magnesia Chrome Bricks

Rebonded magnesia chrome bricks are high-end products with particularly excellent corrosion resistance. Their high-temperature performance lies between fused cast magnesia chrome bricks and sintered magnesia chrome bricks. They are mainly applied in secondary refining furnaces in steel metallurgy, various kilns for non-ferrous metal smelting, cement kilns, and glass kilns.

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Physical and Chemical Indicators

Item	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 (MPa)	≥ 40	≥ 40	≥ 40	≥ 40	≥ 40	≥ 40
Refractoriness Under Load (0.2MPa, ℃)	≥ 1700	≥ 1700	≥ 1700	≥ 1700	≥ 1700	≥ 1700

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