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Quick Details

Brand Name: SIJIHUO
Refractoriness (Degree): 1770< Refractoriness< 2000
Al2O3 Content (%): 25-35%
Material: Alumina Block
Shape: Brick
SiC Content (%): 10
CrO Content (%): 0.02
CaO Content (%): 0.03
MgO Content (%): 0.01
SiO2 Content (%): 60-70%
Place of Origin: China (Mainland)

Specifications

High strengh alkali-resisting bricks
Anti-alkali brick is made of silica, flint clay, combing with other additives reacting with alkaline oxide and efficiently stopping the alkaline slags into the bricks, to achieve the alkali resistance.

Application:Alkali-resisting bricks are widely used in the cement kilns, such as the areas of preheater, precalciner, and tertiary air duct elbow, ect. the demand amount can be max 30~40% during constructing these areas of kilns.

Advantage:

1. Bulk density stability

2. Good anti-erosion character

3. Superior penetration resistance.

Technical Data

Alkali-resistant Fire Brick
Physical& Chemical analysis Common type High strength type Arch type
Brand RK-O RK-H  RK-A
Al2O3 / % 25-30 25-30 30-35
SiO2+SiC / % 60-70 60-70 60-65
Apprent Porosity / % 21 20 25
Bulk Density /gcm3  2.2 2.2 2.2
Cold Crushing Strength/ Mpa 30 60 30
Refractoriness under load (T0.6)   1350 1300 1400
Wearing Coefficient 8.2 7.8  
Thermal shock resistance/ cycles 30 30 30
Thermal expansion coefficient(900)% 0.7 0.7 0.7

Alkaliresistant brick for cement rotary kiln