Low Cement Castable
MOQ: 5 tons
Description
Low cement castable usually consist of raw materials such as cement, silicates, high performance admixtures, mineral admixtures and water. These raw materials are mixed according to a certain proportion, stirred within a certain period of time to form a uniform mixture, and then poured into the position to be poured for cast-in-place construction.
The cement dosage of refractory cement castables is generally 15% to 20%, and the cement dosage of low cement castable is about 5%, and some even reduce to 1% to 2%. The purpose of reducing the amount of cement is to improve the fire resistance of the castable.
Low cement castable is a high-tech refractory developed on common castables by using rheological principles, the tightest packing theory and ultra-fine powder technology. It has the characteristics of low porosity, small pore size, high density, good volume stability, high strength and small water addition, and overcomes the characteristics of a significant decrease in strength of ordinary castables at 800~1200℃, and increases with temperature And increase, so that the thermal shock of the furnace body can be more than doubled.
Features
High density, low porosity / Good hot strength / High refractoriness and high softness
Resistance to mechanical peeling and impact, strong corrosion resistance and low wear rate.
Application
Low cement castable is widely used in power station boilers and other thermal kilns, front and back arches, furnace roofs, and rear furnace walls. They are suitable for heat treatment furnaces, various heating furnaces, shaft kilns, machinery, iron blast furnace tapholes, Ladle, ladle, etc.
Physical And Chemical Indicators
|
Brand/Properties |
MLC-45 |
MLC-55 |
MLC-60 |
LC-75 |
LC-80 |
LC-85 |
LC-95 |
|
|
Application Limit Temp ℃ |
1580 |
1600 |
1650 |
1650 |
1700 |
1750 |
1800 |
|
|
Bulk Density (g/cm3) |
2.4 |
2.5 |
2.55 |
2.55 |
2.6 |
2.7 |
3 |
|
|
Water Required for Casting (%) |
5-7 |
5-7 |
5-7 |
7-9 |
7-9 |
6-8 |
6-7 |
|
|
Max grain size (mm) |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
|
|
CCS/MOR (MPa) |
110℃x24h |
80/12 |
90/12 |
100/13 |
65/9 |
70/10 |
80/11 |
90/13 |
|
1,100℃x3h |
90/13 |
100/14 |
110/14 |
75/10 |
80/11 |
90/12 |
95/14 |
|
|
1,400℃x3h |
120/14 |
130/14 |
150/15 |
80/11 |
85/12 |
100/13 |
110/15 |
|
|
Chemical Analysis(%) |
Al2O3 |
45 |
55 |
60 |
75 |
80 |
85 |
95 |
|
CaO |
2-3 |
2-3 |
2-3 |
2-3 |
2-3 |
2-3 |
2-3 |
|
|
Fe2O3 |
1.5 |
1.5 |
1.5 |
2.4 |
2 |
1.8 |
1.5 |
|
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