Castables and Masses
Castables and Masses
o Rocking Runner and Slag Runner Castables gel bonded
o Low Cement Castables
o High Alumina Castables
o Mortars
o Basic Ramming and Gunning Mass
o Basic Ramming Mass (Induction Furnace)
o Magnesite Ramming Mass (ARC Furnace)
o Basic Gunning Mass
o Tundish Vibro Mass, Tundish Spray Mass
Tundish Working Lining
Low Cement Castables
The product range includes low cement castable of different Alumina content (Al2O3 varying from 45% to 90%) with service range between 1,5000C to 1,8000C. These are characterized by
Al2O3 content and specific low Fe2O3 and low CaO content. Also water requirement for casting is less than 5%. These castables have very short curing time requirement. These are suitable for use in places where very quick setting is required thus reducing the downtime of Furnaces. These are being extensively used in furnaces like:
o Ladle and Tundish back-up lining
o Sintering Furnace roof
o Soaking pit covers
o Health of re-heating furnaces
Low Cement Castables
High Alumina Castables
The product range includes High Alumina Castables different Alumina content varying from 50% upto 95%. The water requirement of casting is 7 to 10% and have a short curing time. These castables are used in reheating furnaces, steel ladles and as a general purposes repair.
High Alumina Castables
Mortars
We manufacture 90K Green Mortar having 90% Al2 O3 , chemically bonded with excellent bonding strength and resistance to metal penetration.
The properties of 90K Mortar are:
o High strength at higher temperature
o Superior performance in corrosive environments
Mortars
Magnesite Ramming Mass
Suitable for Ramming of Electric Arc Furnace, Ultra High Power (UHP), EBT (Eccentric Bottom Tapping) furnaces of various capacities and also as a repair material with quick thermosetting properties.
Magnesite Ramming Mass
Basic Gunning Mass
Suitable for Ramming of Electric Arc Furnace, Ultra High Power (UHP), EBT (Eccentric Bottom Tapping) furnaces of various capacities and also as a repair material with quick thermosetting properties.
Basic Gunning Mass
Tundish Vibro Mass
o We manufacture magnesite based moldable water-free mix for Tundish lining
o It is easily filled between the permanent layer of Tundish and the steel former
o The forma is heated upto 300<sup>0</sup>C by a hot air generator for 2-2.5 hours, and then removed by crane after cooling
o It is formed at designed thickness. It performs at long sequence lengths more than 20 hours and protects the quality of steel
o Deskulling is a safe and quick process with our vibro mass, reducing downtime and lowering maintenance costs. It can be used in both cold and hot tundish practices
Tundish Vibro Mass
Tundish Spray Mass
The working lining of Tundish plays an important role in providing quality and cost effective steel.
Tundish Spray Mass
| TYPICAL FORMULATIONS OF CASTABLES & BASIC MASS | ||||||||||||||
| Chemical Analysis (%) | ||||||||||||||
| Product | Mortar | High Alumina Castables | Low Cement Castables | Basic Mass | Tundish Vibro Mass | Tundish Spray Mass | ||||||||
| Grades | 90 – K Mortar (G) | 60% HA | 70% HA | 90% HA | LC 45 | LC 60 | LC 70 | LC 80 | LC 90 | Gunning Mass | Ramming Mass | |||
| Al2 O3 (Min.) % | 90 | 60 | 70 | 70 | 45 | 60 | 70 | 80 | 90 | |||||
| MgO (Max.) % | 80 | 84 | 75 | 70 | 80 | |||||||||
| Fe2 O3 (Max.) % | 1.5 | 1.5 | 1 | 1 | 1 | 2.5 | 2 | 2 | 2 | |||||
| SiO2 (Max.) % | 8 | 5.5 | 15 | 20 | 10 | |||||||||
| Cr2O3 % | 2 | |||||||||||||
| CaO (Max)% | 4 | 4 | 3.4 | 3 | 3.5 | 3.5 | ||||||||
| Physical Properties | ||||||||||||||
| Product | Mortar | High Alumina Castables | Low Cement Castables | Ramming Mass | Tundish Vibro Mass | Tundish Spray Mass | ||||||||
| B.D. (gm/cc) Min. 1100C/24 hrs | 2.75 | 2.35 | 2.4 | 2.6 | 2.3 | 2.6 | 2.7 | 2.9 | 3.2 | 2.35 | 2.65 | |||
| C.C.S. (Kg./cm2) Min. / 1100C | 350 | 750 | 800 | 850 | 700 | 750 | 800 | 850 | 900 | 400 | 450 | 300 | 300 | |
| C.C.S. (Kg./cm2) Min. Drying @8000C / 3 hrs soaking | 800 | 850 | 900 | 800 | 800 | 860 | 950 | 1000 | ||||||
| C.C.S. (Kg./cm2) Min. Drying @11000C / 3 hrs soaking | 900 | 900 | 950 | 900 | 900 | 950 | 1050 | 1150 | ||||||
| C.C.S. (Kg./cm2) Min. Drying @15000C / 3 hrs soaking | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1150 | 1150 | 400 | 70 | 300 | 300 | ||
| Thermal Conductivity (k cal/m/hrs0C) | 1.15 | 1.2 | 1.2 | 1.16 | 1.2 | 1.29 | 1.8 | 2.3 | ||||||
| P.L.C. max at 15000C | ±1 | -0.8 | -0.7 | ±0.8 | ±1 | -0.8 | -0.7 | ±0.8 | ±0.8 | -1.2 | -1.2 | -3 | -3 | |
| Shelf Life (months) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| L.B.D. (gm/cc) Min. | 1.6 | 1.7 | ||||||||||||
| Skull Removal | Smooth | Smooth | Smooth | |||||||||||
| Grain Size (mm) Max. | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 3 | 5 | 1 | 0.5 | 0.5 | |
