Low cement castable refractory

Low cement castable refractory


Classification:

The ultra low cement corundum mullite castable produced by us takes super corundum (or high alumina bauxite), α-Al2O3 micro powder, cement as raw materials, mixed with a certain ratio of binder.
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Product Details


Low cement castable refractory (LCC) refers to castable with low cement content that between 5%-7%, less than 1% cement content is called ultra low cement. The ultra low cement corundum mullite castable produced by us takes super corundum (or high alumina bauxite), α-Al2O3 micro powder, cement as raw materials, mixed with a certain ratio of binder.

Our company produces varies of low cement castables (LLC), include high alumina LLC, mullite LLC and corundum LLC.

The ultra low cement corundum mullite castable with features of high density, low porosity, high strength, good wear resistance, strong erosion resistance and good volume stability etc. It is widely used in heating furnace, tap hole of blast furnace, hot metal pretreatment and cement rotary kiln lining etc.

Low cement castable refractory features: 
1. Lower porosity, good compactness and high density
2. High bending and compressive strength, good wear resistance
3. Excellent chemical stability, good acid-base erosion resistance
4. High refractoriness and stable high temperature performance

 

Product name High-alumina low cement castable Corundum based low cement castable
Brand G-15 G-16 G-17 G-18S G-18
The highest working temp (℃) 1500 1600 1650 1700 1750
Bulk density 110℃ dry off (g/cm3) ≥ 2.6 2.65 3 3 3
Chemical content (%) Al2O3 (%) ≥ 75 78 90 92 93
SiO2 (%) ≤ 20 15 6 4 1
Bending strength (MPa) ≥ 110℃×24h 8 10 13 13 8
1100℃×3h 12 13 14 15 9
1500℃×3h 14 14 16 16 13
Cold crushing strength (MPa) ≥ 110℃×24h 80 100 100 100 80
1100℃×3h 130 140 150 160 120
1500℃×3h 140 150 160 170 130
Reheat linear change (%) 1100℃×3h ±0.1 ±0.1 ±0.1 ±0.1 ±0.1
1500℃×3h ±0.3 ±0.3 ±0.3 ±0.3 ±0.3
Water content for construction (%) 5.5 5.5 4.0-4.5 4.5 4.5
Application Cement rotary kiln mouth, kiln hood, cooler and other industrial kiln lining Cement rotary kiln mouth, coal-injection duct and other industrial kiln lining

 

Low cement castable refractory

 

Key words:

Low cement castable