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  • refractory cement,high aluminum cement,alumina powder
  • refractory cement,high aluminum cement,alumina powder
Refractory Cement
Al₂O₃: 50%-80%
Raw materials: Bauxite & limestone or calcined limestone
Packing: 25kg,50kg bag or jumbo bag
Application: Fire resistant and refractory or maintenance for the buildings and bridges,etc.
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Introduction
Technical Data
Application
CA50 series of calcium aluminate refractory binder consist of CA50-G5,CA50-G6,CA50-G7,CA50-G8, CA50-G9,CA50-N and CA50-fused.

CA50 series of Calcium Aluminate refractory binder are made of bauxite and limestone or calcined limestone which are sintered with proper ratio at high temperature in the rotary kiln , (or fused in arc furnace ). The clinker will be pulverized to form calcium aluminate binder whose main mineralogy phases are CA and CA2. With low content of Fe2O3(2.5%).

Character :

1. Quick hardening and early strengthening

2. Used in urgent repairing

3. Used in the project under construction in winter

4. Sound anti-corrasion from sulfate effect

5. Anti-freezing

6. High purity

Item\Product CA50-G5 (A500) CA50-G6 (A600) CA50-G7 (A700)
pyrometric cone equivalent on neat cement paste (℃) 1420-1460 1420-1460 1420-1460
Chemical composition Al₂O₃ ≥50 ≥50 ≥50
CaO ≥32.5 ≥33
SiO₂ ≤8.0 ≤8.0 ≤8.0
Fe₂O₃ ≤2.5 ≤2.5 ≤2.5
Na₂O+K₂O ≤0.4 ≤0.4 ≤0.4
Mortar property Setting time (Min.) - - -
Initial set time ≥30 ≥30 ≥30
final set time ≤360 ≤360 ≤360
Flexual strength (MPa) 6hrs - - -
24hrs 5.5 6.0 6.5
72hrs 6.5 7.0 7.5
Compressive Strength (Mpa) 6hrs - - -
24hrs 40 45 50
72hrs 50 55 60
Specific Gravity (g/m3) 2.95-3.05 2.95-3.05 2.95-3.05
Blaine fineness (m2/kg) ≥300 ≥300 ≥300
1. Construction of sulfate corrosion resistance and high temperature proof.

2. Used in rush repairs, leakage stopping , resistance to sulfate attack.

3. Ideal binder for refractories such as refractory concrete, refractory castable, ramming mixing, gunning mixing and manmade marble bricks.

4. Used as ceramic adhesive.

5. Used for sealing coating products and refractory mortar.

6. Used in chemical industry, metallurgical industry, building materials.

7. Used for road, bridge maintenance .
 
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