High Alumina Refractory Cement

High Alumina Refractory Cement
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Our high alumina refractory cement is made by forming a calcined mixture of bauxite and limestone within a rotary kiln at high temperatures. The high refractoriness, quick setting and great compressive strength make this material perfect for application in ceramic and metallurgical applications. This prodcut may be produced in a wide selection of grades, please call with your requirements.

This material is calcined from a mixture of bauxite and limestone in rotary kiln at a high temperature. Its high refractoriness, quick setting properties, high bending and compressive strength make it widely used as a refractory material in the application of ceramic and metallurgical industries. It is available in various grades as per requested.

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CHEMICAL & PHYSICAL ANALYSIS PRODUCT GRADE
A500 A600 A700 A800
Al2O3 (%) 50.00 min. 50.00min. 53.00 min 53.00 min.
CaO (%) 32.00 min. 33.00min. 34.00 min. 34.50 min.
SiO2 (%) 8.00 max. 7.00 max. 6.50 max. 6.00 min.
Fe2O3 (%) 3.00 max. 2.50 max. 3.00 max. 2.00 max.
Initial Setting Time (minutes) 40.00 min. 40.00min. 40.00min.. 50.00min
Final Setting Time (Minutes) 120.00max. 120.00max 120.00max 90.00max
Bending Strength (Kg/cm2) - 24 hrs 50.00 min. 55.00 min. 70.00 min. 75.00min.
Bending Strength (Kg/cm2) - 72 hrs 55.00 min. 60.00 min. 75.00 min. 80.00 min.
Compressive Strength (Ks/cm2) - 24 hrs 460.00 min. 525.00 min. 660.00 min. 680.00 min.
Compressive Strength (Ks/cm2) - 72 hrs. 525.00 min. 600.00 min. 725.00 min. 750.00 min.
Refractorness (C degree) 1450 1450 1580 1610
Particle Sizes (90.00% min.) 325 mesh 325 mesh 325 mesh 325 mesh
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