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Phosphate High Alumina Brick

Al2O3: 75-80%

Bulk Density: 2.65-2.8g/cm3

Long service life

Reduce heat loss

Used for cement kilns

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Phosphate high alumina bricks are made of high-quality high-alumina bauxite, combined with aluminum dihydrogen phosphate, and dried in an oven.


Phosphate high alumina bricks have high load softening temperature, high compressive strength, good thermal shock stability, wear resistance and peeling resistance. It has the characteristics of stable performance, short construction period, energy saving and environmental protection.

Phosphate High Alumina Brick Specifications

ItemChemical BondedPhosphate Bonded – PPhosphate Bonded – PAHigh RUL
Al2O3 (%)≥75 ≥75 ≥80 ≥78
Fe2O3 (%)≤2≤2≤2≤2
CaO (%)0.60.6
Bulk & Density, g/cm32.652.72.752.8
Refractoriness ( ℃)≥1770≥1790≥1790≥1790
Apparent Porosity (%)≤18≤18-21≤20≤19
Cold Crushing Strength MPa≥60≥70≥75≥80
Refractoriness Under Load of 0.2MPa, ℃≥1400≥1350≥1450≥1460
Thermal Shock Resistance (1100 ℃ -water cooling), times1520


Phosphate high alumina bricks are mainly used in dry process cement production kilns, rotary kilns, phosphorus chemical kilns, etc. Phosphate high alumina bricks have high refractoriness, good wear resistance and high strength.

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