High Alumina Refractory Cement

High alumina refractory cement has the characteristics of high refractoriness, high temperature stability and strong operability. Therefore, it is very important for high temperature industries. Kerui Refractory provides cement with high-quality raw materials and excellent manufacturing process. At the same time, we also provide kiln solutions and customized cement.

High Alumina Refractory Cement for Sale

High aluminate cement is a water-setting cementitious material made by mixing high alumina bauxite, a binder (calcium aluminate, water glass, aluminum sulfate, etc.), and an admixture (water reducer, etc.). Its main components are alumina and silica. Their composition ratio is at least 57.8%. This moldable refractory cement has high strength and volume stability at high temperatures.

Kerui offers CA50, CA70, and CA80 cement. And we support immediate dispatch when this kind of cement in stock.

Parameters of Kerui High Alumina Cement

CA50 High Alumina Cement

Item			A600	A700	A900
SiO2, %		≤	7.8	7.5	5.5
Al203, %		≥	50.0	51.0	53.5
Fe203, %		≤	2.5	2.5	2.5
R20, %		≤	0.4	0.4	0.4
S, %		≤	0.1	0.1	0.1
CI, %		≤	0.1	0.1	0.1
325M Residue on Sieve, %		≤	15	12	8
S, m²/kg		≥	300	320	350
Initial Setting Time, min		≥	45	60	90
Final Setting Time, h		≤	6	6	6
Flexural Strength, Mpa	1d	≥	6.0	6.5	8.0
	3d	≥	7.0	7.5	10.0
Compressive Strength, Mpa	1d	≥	45	55	72
	3d	≥	55	65	82

CA70 High Alumina Cement

Item		CA70
Properties Determined according to GB201-2000
SiO2,%		≤0.5
Al203,%		68.5-70.5
FeO3,%		≤0.2
CaO,%		28.5-30.5
MgO,%		≤0.4
R20,%		≤0.4
Fineness	D50, um	11-14
	45um, %	≤8.0
Setting Time, min	Initial Setting, IS	120-180
	Final Setting, FS	150-240
Flexural Strength, Mpa	1d	7.5-10.0
	3d	10.0-12.0
Compressive Strength, Mpa	1d	40-50
	3d	45-55
Cement Properties in Testing Castables
Setting Time, min	20°C	60-90
	35°C	30-50
Vibration Flow, mm (20°C)	Initial Flow	265-275
	10min	255-265
	30min	235-245
	60min	230-240
Flexual Strength, Mpa	20°C*24h	4.5-5.5
	110°C*24h	10.0-11.5
	1100°C*4h	12.0-14.0
Compressive Strength, Mpa	20°C*24h	35-45
	110°C*24h	85-95
	1100°C*4h	100-120
Linear Change, %	1100°C*4h	≤-0.25

CA80 High Alumina Cement

Item		CA80
Properties Determined according to GB201-2000
SiO2, %		≤0.5
Al2O3, %		78.0-81.0
Fe2O3, %		≤0.2
CaO, %		17.5-20.5
MgO, %		≤0.4
R2O, %		≤0.4
Fineness	D50, μm	5-8
	-45μm, %	≤5.0
Setting Time, min	Initial Setting, IS	30-90
	Final Setting, FS	90-180
Flexural Strength, Mpa	1d	5.0-7.5
	3d	6.0-8.5
Compressive Strength, Mpa	1d	30-40
	3d	40-50
Cement Properties in Testing Castables
Setting Time, min	20℃	90-120
	35℃	40-60
Vibration Flow, mm (20℃)	Initial Flow	255-265
	10min	250-260
	30min	240-250
	60min	235-245
Flexual Strength, Mpa	20℃*24h	3.0-4.0
	110℃*24h	8.0-9.0
	110 *24h	11.0-13.0
Compressive Strength, Mpa	20℃*24h	25-35
	110℃*24h	60-70
	1100℃*4h	100-120
Linear Change, %	1100℃*4h	≤-0.15

Advantages of Kerui High Aluminous Cement

• Effective resistance to acidic and alkaline slag;
• High compressive strength;
• Good wear resistance;
• High temperature rapid condensation hardening;
• Refractory temperature up to 1750 degrees Celsius;
• Volume stability at high temperatures;
• Any shape and size to be processed;
• The strength improvement and water reducing property of the castable.

Applications of Kerui Alumina Refractory Cement

• Masonry
  It can be used for masonry of industrial chemical kilns, such as steelmaking furnaces, blast furnaces, electric furnaces, and metallurgical furnaces.
• Repair
  It can be used to repair various industrial chemical kilns, such as cement kilns, glass kilns, ceramic kilns, and lime kilns.
• Manufacturing
  It can be used to manufacture refractory products, such as refractory castables, refractory bricks, and refractory coatings.