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Magnesia bricks

PB-98G
Direct bonded periclase brick, PB-98G, is produced by using carefully selected high-purity magnesia clinkers as the basic ingredient and burning them at super-high temperature. This product has improved high temperature strength and creep-resistance, and this brick is suitable for the crown and the superstructure of regenerator housing.

PB-98S
Direct bonded periclase brick, PB-98S, is produced by carefully selected high-purity magnesia clinkers as the basic ingredients and burning them at super-high temperatures. This product has high creep-resistance and corrosion-resistance, and is applicable for the top course of regenerator checkers.

G-MG-95S
G-MG-95S is standard-type magnesia brick with excellent performance, suitable for the middle-to-upper course of regenerator checkers.



Magnesia bricks (unburned)

UB-M
To produce this brick, an appropriately designed granulation blending is used with special bonding agents. This product has high corrosion resistance and spalling resistance under high temperature.

Using magnesia clinkers as the raw ingredients, this product is particularly suited and is widely used for regenerator housing of glass melting furnaces.



Magnesia-zircon bricks

MZ-HG
MZ-HG brick is blended with electro-fused magnesia and shows high creep-resistance. This product is most suitable in terms of cost-performance for the crowns, walls and top course of regenerator checkers.

MZ-SG
MZ-SG brick is blended with standard-type magnesia. This product has high creep-resistance and high performance against thermal cycle test after impregnation of sodium sulfate. In terms of cost-performance, this product is most suitable for transition zone of solidification/liquefaction of sodium sulfate for checker works.



Magnesia-spinel brick

PSB-A3
To produce this high-quality periclase-spinel refractory, high-purity spinel ingredients produced via an electro-fused method and magnesia clinkers are blended and maintained under a high quality-control system. Compared to magnesia-chrome direct bonded bricks, this brick does not contain environmentally damaging chrome. It also contains few impurities such as silicate and have high alkali-resistance. This product shows excellent performance in glass melting furnaces, particularly in the transition zone of solidification/liquefaction of sodium sulfate for checker works. In addition, it is adherence-resistant to dispersed sodium sulfate and other glass materials, making them particularly suitable for regenerator checkers.

Magnesia bricks

Product			PB-98G	PB-98S	G-MG-95S	UB-M
Chemical composition (%)	SiO₂		0.2	0.2	1.2	3.3
	Al₂O₃		0.1	0.1	0.2	0.7
	Fe₂O₃		0.1	0.1	0.9	0.2
	Cr₂O₃		-	-	-	-
	CaO		0.7	0.6	2.1	1.1
	MgO		98.5	98.5	95	94.6
Physical properties	Apparent specific gravity		3.48	3.45	3.50	3.40
	Bulk specific gravity		3.00	2.93	2.90	2.96
	Porosity (%)		15	16	18	13
	Compressive strength (MPa)		70	60	100	40
	Thermal expansion (%, at1,000°C)		1.3	1.3	1.3	1.2
	Hot modulus of rupture (Mpaat 1,500 °C)		4.6	3.1	1.0
	Refractoriness under load (T2,°C)		>1,720	>1,720	>1,680
	Creep test (%) (1,400°Cx720hrs, 0.5MPa)		-0.8	-1.3	-3.3
	Thermal conductivity (W/(m·K))	600°C	8	8	8	8
	Thermal conductivity (W/(m·K))	1,000°C	6	6	6	6
Weight calculation rate			3.00	2.95	2.90	2.95
Typical applications			Regenerator crown upper wall	Checker top course	Regenerator upper & middle wall checker middle course	Regenerator housing

Magnesia-zircon bricks

Product			MZ-HG	MZ-SG
Chemical composition(%)	SiO₂		7.1	6.7
	Al₂O₃		0.2	0.2
	Fe₂O₃		0.3	0.5
	ZrO₂		13	12
	CaO		0.8	0.8
	MgO		78	78
Physical properties	Apparent specific gravity		3.70	3.65
	Bulk specific gravity		3.22	3.08
	Porosity (%)		13	15
	Compressive strength (MPa)		90	70
	Hot modulus of rupture (Mpaat 1,500 °C)		9	6
	Thermal expansion (%, at1,000°C)		1.2	1.2
	Refractoriness under load (T2,°C)		>1,720	1,710
	Creep test (%) (1,400°Cx 720hrs, 0.5MPa)		-0.9	-2.3
	Thermal conductivity (W/(m·K))	600°C	5.5	5.5
		1,000°C	4.6	4.6
Weight calculation rate			3.20	3.10
Typical applications			Regenerator crown upper wall, Checker top course	Transition zone of solidification/ liquefaction of Na₂SO₄

Magnesia-spinel brick

Product			PSB-A3
Chemical composition (%)	SiO₂		0.4
	Al₂O₃		15
	MgO		84
Physical properties	Apparent specific gravity		3.50
	Bulk specific gravity		2.90
	Porosity (%)		17.5
	Compressive strength (MPa)		40
	Bend strength under heat (Mpaat 1,500 °C)		2
	Thermal expansion (%, at1,000°C)		1
	(DIN method, times) (air cooling from 1400°C)		>30
	Thermal conductivity (W/(m·K))	600°C	3.4
		1,000°C	2.4
Weight calculation rate			2.90
Typical applications			Checker Na₂SO₄ condensation zone

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