Sunward Refractories

Product

High Alumina Bricks

Sunward’s high alumina bricks are made from superior grade mullite, bauxite and fused alumina. Each brick is formed by high pressure press and undergoes a sophisticated, controlled temperature firing process. These high-tech high alumina bricks are often used for ladles, torpedo car, and cement kilns. The advantages of Sunward’s high alumina bricks are :

Excellent spalling resistance
Excellent corrosion resistance

Specification

Brand	HA	HS	H1-1	H1	H2-1	H2	H3-1	H3	H4
Properties	HA	HS	H1-1	H1	H2-1	H2	H3-1	H3	H4
Refractoriness (SK)	39	38	38	38	37	37	36	35	35
Apparent Porosity (%)	≦20	≦27	≦22	≦27	≦22	≦27	≦25	≦27	≦28
Bulk Density (g/cm3)	≧2.6	≧2.4	≧2.5	≧2.3	≧2.4	≧2.2	≧2.3	≧2.1	≧2.1
Cold Crushing Strength (kg/cm2)	≧600	≧249	≧500	≧294	≧500	≧294	≧300	≧245	≧196
Chemical Composition (%)
Al2O3	≧90	≧80	≧70	≧70	≧60	≧60	≧50	≧50	≧45
Fe2O3	≦2.0	≦2.0	≦2.5	≦2.5	≧2.5	≦2.0	≦2.5	≦2.5	≦2.0

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