Industrial Refractory

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Application of aluminum-silicon refractory brick in cement rotary kiln

The aluminum-silicon refractory bricks are mainly used in preheaters, decomposing furnaces, tertiary air ducts, kiln door covers, grate coolers, cement rotary kiln decomposition zones and upper and lower transition zones.

The aluminum-silicon refractory bricks mainly include alkali-resistant refractory bricks, anti-stripping high allumina bricks, silica-mullite series refractory bricks and high-load soft phosphates bricks.

The physical and chemical indicators of the above mentioned bricks are as follows:

alkali-resistant refractory brick
Refractory Name Chemical Composition (Al2O3) % C.C.S (MPa) Alkali Resistance
Ordinary Alkali-Resistant Brick 25~40 ≥30 I
High-Strength Alkali-Resistant Brick 25~40 ≥60 I

anti-stripping high allumina brick
Refractory Name Chemical Composition % Bulk Density (g/cm3) Apparent Porosity (%) CSS (MPa) Refractoriness Under Load (℃)
(0.2MPa, T0.6)
Thermal Shock Resistance (Cycle)
(1100℃,water quenching)
Al2O3 ZnO2
anti-stripping high allumina brick ≥70 ≥6.0 ≥2.55 ≤22 ≥60 ≥1470 ≥20
≥70 - ≥2.55 ≤20 ≥60 ≥1470 ≥15

silica-mullite series refractory brick
Refractory Name Chemical Composition % Bulk Density (g/cm3) Apparent Porosity (%) CSS (MPa) Refractoriness Under Load (℃)
(0.2MPa, T0.6)
Thermal Shock Resistance (Cycle)
(1100℃,water quenching)
Abrasion at Ambient Temperature (cm³)
Al2O3 SiO2+SiC
silica-mullite series refractory brick ≥65 ≥30 ≥2.60 ≤19 ≥85 ≥1650 ≥10 ≤8
≥63 ≥30 ≥2.60 ≤19 ≥90 ≥1600 ≥10 ≤8
≥60 ≥30 ≥2.55 ≤19 ≥90 ≥1550 ≥12 ≤8
high abrasive brick ≥50 ≥30 ≥2.50 ≤17 ≥90 ≥1550 ≥12 ≤5

Tags: aluminum-silicon-refractory-brick, cement-rotary-kiln,

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