As the name suggest Low Cement Castable (LCC) is characterized by its low percentage of cement content which enhances the mechanical strength, improved resistance to thermal shock, and reduced water demand and porosity compared to conventional castables. It is a significant advanced formulation that combines the benefits of traditional castables with the advantages of reduced cement content, resulting in superior performance and longer service life. They are suitable for various applications such as furnace linings, ladle back up linings, soaking pit covers, tundish sprays, precast shapes, etc.
Benefits of LCC castable from HRWPL:
These castables are made of premium raw materials and have low cement content (max 5%), which makes them superior to conventional castables in many ways.
- High Alumina and Low iron: HRWPL typically offers LCC castable with High Alumina content (40-95%) and lower iron content typically 1-1.9% which gives excellent resistance to slag and chemical attack.
- Higher quality of Raw materials and cement are used to ensure the required mechanical strength and abrasion.
- HRWPL offers low porosity (typically around 18%) and low linear shrinkage (less than 0.5%), which means it has low permeability and high density, preventing gas leakage and heat loss.
- Our LCC castable has excellent flowability and workability, which means they can be easily mixed, poured, vibro-casted, forming gas tight joints and smooth surfaces.
- It has higher Thermal conductivity which assists in transferring heat efficiently that can resist thermal shock and spalling.
- We ensure that the water consumption percentage in our LC castable is between 5-6% under normal environmental condition which helps to minimize the formation of unwanted hydrates, resulting in improved refractory properties.
Below are the range of low cement castable that HRW cater to its customers.
Brand Name: – | HR LCC 45 | HR LCC 60 | HR LCC 70 | HR LCC 80 | HR LCC 90 | |||||
Type | 45% Alumina LC Castable | 60% Alumina LC Castable | 70% Alumina LC Castable | 80% Alumina LC Castable | 90 % Alumina LC Castable | |||||
Nature of Bond | Hydraulic | Hydraulic | Hydraulic | Hydraulic | Hydraulic | |||||
Installation | Vibration Casting | Vibration Casting | Vibration Casting | Vibration Casting | Vibration Casting | |||||
Raw Material Base | Calcined Clay | Calcined Clay & Calcined Bauxite | Calcined Clay & Calcined Bauxite | Calcined Bauxite | Brown Fused Alumina (BFA) | |||||
Max Service Temp. | 1550°C | 1600°C | 1600°C | 1700°C | 1700°C | |||||
Max Grain Size | 6 mm | 6 mm | 6 mm | 6 mm | 6 mm | |||||
Water Required for Casting | 5.0- 5.5% | 5.0-6.0% | 5.0-6.0% | 5.0-6.0% | 5.0-6.0% | |||||
Chemical Analyses: – (%) | Typical | Specification | Typical | Specification | Typical | Specification | Typical | Specification | Typical | Specification |
Al2O3 : | 46.5 | 45.0 Min | 60.8 | 60.0 Min | 70.5 | 70.0 Min | 80.5 | 80.0 Min | 90.5 | 90.0 Min |
Fe2O3 : | 0.9 | 1.5 Max | 1.2 | 1.50 Max | 1.3 | 1.50 Max | 1.7 | 1.80 Max | 0.3 | 1.0 Max |
CaO : | 1.6 | 1.7 Max | 1.7 | 1.80 Max | 1.8 | 1.90 Max | 1.8 | 1.90 Max | 1.5 | 1.60 Max |
Physical Properties: – | ||||||||||
B. D (gm/cc) | 2.33 | 2.30 Min | 2.62 | 2.60 Min | 2.7 | 2.65 Min | 2.93 | 2.90 Min | 3.02 | 3.00 Min |
Drying at 110°C/24 hrs. | ||||||||||
Cold Crushing Strength (Kg/cm2): | ||||||||||
Drying at 110°C/24 hrs. | 750 | 700 Min | 770 | 700 Min | 800 | 750 Min | 860 | 800 Min | 980 | 950 Min |
Fired at 800°C/3hrs. | 850 | 800 Min | 850 | 800 Min | 850 | — | 970 | — | 1040 | 1000 Min |
Fired at 1100°C/3hrs. | 950 | 900 Min | 950 | 900 Min | 950 | — | 1060 | — | 1140 | 1100 Min |
Fired at 1500°C/3hrs. | 1050 | 1000 Min | 1050 | 1000 Min | — | — | — | — | — | — |
Fired at 1550°C/3hrs. | — | — | — | — | 1100 | 1000 Min | 1200 | 1150 Min | 1350 | 1200 Min |
Thermal Properties: – | ||||||||||
Refractoriness, Orton / 0 C | 32 | 32/1717 Min | 36 | 36/1804 Min | 36 | 36/1804 Min | 37 | 37/1820 Min | 37 | 37/1820 Min |
PLC (%) | ||||||||||
Fired at 800°C/3hrs. | -0.05 | ± 0.2 Max | -0.05 | ± 0.2 Max | -0.05 | ± 0.2 Max | -0.05 | ± 0.2 Max | -0.05 | ± 0.2 Max |
Fired at 1100°C/3hrs. | -0.15 | ± 0.3 Max | -0.15 | ± 0.3 Max | -0.15 | ± 0.3 Max | -0.15 | ± 0.3 Max | -0.1 | ± 0.3 Max |
Fired at 1500°C/3hrs. | -0.8 | ± 1.00 Max | -0.6 | ± 1.00 Max | — | — | — | — | — | — |
Fired at 1550°C/3hrs. | — | — | — | — | -0.8 | ± 1.00Max | -0.8 | ± 1.00Max | -0.6 | ± 0.8 Max |
Water requirements indicated are based on laboratory test conditions. Actual water requirement may vary subject to site conditions. The properties shown are for vibratory cast material only unless specified otherwise. All values are based on test results on standard bars of size 160x40x40 mm. Test methods are guided by and based on various Indian Standards (IS). |
Brand Name: – | HR LCC 95 | HR LCC 70 M | HR LCC 70 LI | HR LCC 60 A | HR LCC 60 S | |||||
Type | 95 % Alumina LC Castable | Mullite Based 70% Alumina LC Castable | 70% Alumina LC Castable Low Iron | Andalusite Based 60% Alumina LC Castable | LC Castable Low PLC | |||||
Nature of Bond | Hydraulic | Hydraulic | Hydraulic | Hydraulic | Hydraulic | |||||
Installation | Vibration Casting | Vibration Casting | Vibration Casting | Vibration Casting | Vibration Casting | |||||
Raw Material Base | White Tabular Alumina (WTA) | Mullite | Calcined Clay & BFA | Andalusite | Calcined Clay & Silimanite | |||||
Max Service Temp. | 1800°C | 1700°C | 1650°C | 1600°C | 1600°C | |||||
Max Grain Size | 6 mm | 6 mm | 6 mm | 6 mm | 6 mm | |||||
Water Required for Casting | 5.0-6.0% | 5.0-6.0% | 5.0-6.0% | 5.0-6.0% | 5.0-6.0% | |||||
Chemical Analyses: – (%) | Typical | Specification | Typical | Specification | Typical | Specification | Typical | Specification | Typical | Specification |
Al2O3 : | 94.2 | 94.0 Min | 71.8 | 70.0 Min | 70.5 | 70.0 Min | 61 | 60.0 Min | 60 | 58.0 Min |
Fe2O3 : | 0.2 | 0.30 Max | 0.4 | 0.50 Max | 0.75 | 0.80 Max | 0.5 | 0.80 Max | 0.9 | 1.0 Max |
CaO : | 1.2 | 1.30 Max | 1.7 | 1.80 Max | 1.7 | 1.80 Max | 1.5 | 1.60 Max | 1.75 | 1.80 Max |
Physical Properties: – | ||||||||||
B. D (gm/cc) | 3.12 | 3.10 Min | 2.65 | 2.60 Min | 2.7 | 2.65 Min | 2.66 | 2.60 Min | 2.6 | 2.55 Min |
Drying at 110°C/24 hrs. | ||||||||||
Cold Crushing Strength (Kg/cm2): | ||||||||||
Drying at 110°C/24 hrs. | 1020 | 1000 Min | 750 | 700 Min | 760 | 700 Min | 750 | 700 Min | 780 | 750 Min |
Fired at 800°C/3hrs. | 1080 | 1050 Min | 840 | 800 Min | 850 | — | — | — | 870 | 800 Min |
Fired at 1100°C/3hrs. | 1150 | 1100 Min | 950 | 900 Min | 980 | — | 800 | — | 925 | 900 Min |
Fired at 1550°C/3hrs. | 1350 | 1250 Min | 1200 | 1100 Min | 1080 | 1000 Min | 1050 | 900 Min | 1050 | 1000 Min |
Thermal Properties: – | ||||||||||
Refractoriness, Orton / 0 C | 38 | 38/1835 Min | 37 | 37/1820 Min | 36 | 36/1804 Min | 37 | 37/1820 Min | 36 | 36/1804 Min |
PLC (%) | ||||||||||
Fired at 800°C/3hrs. | -0.05 | ± 0.2 Max | -0.05 | ± 0.2 Max | -0.05 | — | -0.05 | — | -0.05 | ± 0.2 Max |
Fired at 1100°C/3hrs. | -0.1 | ± 0.3 Max | -0.15 | ± 0.3Max | -0.15 | — | -0.12 | — | -0.15 | ± 0.3 Max |
Fired at 1550°C/3hrs. | -0.65 | ± 0.8 Max | -0.4 | ± 0.60 Max | -0.5 | ± 0.70 Max | 0.5 | ± 0.80 Max | -0.4 | ± 0.60 Max |
Water requirements indicated are based on laboratory test conditions. Actual water requirement may vary subject to site conditions. The properties shown are for vibratory cast material only unless specified otherwise. All values are based on test results on standard bars of size 160x40x40 mm. Test methods are guided by and based on various Indian Standards (IS). |