Magnesia Brick

Magnesia Brick – Premium Refractory Solution for High-Temperature Applications

Magnesia brick is high-performance refractory materials engineered to withstand extreme temperatures and harsh industrial environments. Composed primarily of high-purity magnesia (MgO) and enhanced with advanced bonding agents, these bricks deliver exceptional thermal stability, corrosion resistance, and mechanical strength.

It generally divided into sintered and chemical combination magnesia refractory brick. For the sintered magnesia brick, direct contact type is called direct combination of magnesia brick, electric fused type is called reunited fused magnesia brick.

Key Features of Kerui Magnesia Brick:

1. Superior Temperature Resistance: With a melting point exceeding 2800°C, magnesia bricks excel in applications up to 2000°C, making them ideal for furnaces, kilns, and reactors.
2. Alkali and Slag Resistance: Excellent resistance to basic slags and alkaline atmospheres ensures prolonged service life in steelmaking, cement rotary kilns, and non-ferrous metal processing.
3. Thermal Shock Stability: Optimized composition minimizes cracking under rapid temperature fluctuations, enhancing durability in cyclic heating operations.
4. High Load Capacity: Robust structural integrity supports heavy loads at elevated temperatures, critical for industrial furnace linings.

Application of Kerui Magnesia Brick:

• Steel industry: Electric arc furnaces, ladles, and converters.
• Cement plants: Burning zones and transition zones of rotary kilns.
• Non-ferrous metallurgy: Copper smelting furnaces and refining units.
• Glass and chemical industries: High-temperature reactors and incinerators.

Specification of Kerui Magnesia Brick:

Item	KR-MZ-91	KR-MZ-92	KR-MZ-93	KR-MZ-94	KR-MZ-97
MgO, % ≥	91	92	93	94.5	97
SiO2, % ≤	4	3.5	2.5	2	2
Fe2O3, % ≤	1.3	–	–	1.2	1.2
CaO, % ≤	2.5	2.5	2	1.8	1.8
Apparent Porosity, ％ ≤	18	18	18	18	18
Bulk Density, g/cm3 ≥	2.86	2.9	2.95	2.92	2.95
Cold Crushing Strength Mpa, ≥	60	60	60	60	60
0.2Mpa Refractoriness Under Load T0.6 ℃	≥1570	≥1560	≥1620	≥1650	≥1700

Shape & Size of Kerui Magnesia Brick

Straight	Split	Arch	Wedge	Tile	Other Shape
L×W×H(mm)	L×W×H (mm)	L×W×H/h(mm)	L×W×H/h (mm)	L×W×H (mm)	Key brick
230×114×65	230×114×25	230×114×65/45	230×114×65/45	230×230×38	Skew brick
230×114×75	230×114×32	230×114×65/55	230×114×65/55	230×230×50	Soap
	230×114×37	230×114×75/45	220×114×75/45	230×230×65	Checker
	230×114×50	230×114×75/55	220×114×75/55	230×230×75	Neck
		230×114×75/65	220×114×75/65		Taper