castables

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Castables

Low CaO content ensures high Refractoriness, excellent hot strength and MOR at all temperatures. Lower apparent Porosity after firing offer better corrosion resistance, High Abrasion & spalling resistance and volume stability.


BRANDS Reframon 45 Reframon 60 Reframon 70 Reframon 70 M Reframon 80 Reframon 90 Reframon 95
Chemical Analysis
Alumina (Al2O3), %, min 45 60 70 70 80 90 93
Iron Oxide (Fe2O3), %, max 1.0 1.5 1.5 0.5 2.5 1.5 0.3
Silica (SiO2), %, max 50 36 25 25 14 5.7 4
Lime(CaO), %, max 2 2 2 2 2 2 1.8
               
Physical Analysis
Service temperature, 0C 1550 1600 1600 1700 1700 1700 1800
Grain Size in mm 0-6 0-6 0-6 0-6 0-6 0-6 0-6
Water required for casting, % 4.8-5.8 4.5-5.5 4.5-5.5 4.5-5.5 4.2-5.0 4.2-5.0 4.0-4.8
Bulk Density, Gm/cc, min 2.3 2.5 2.65 2.6 2.8 2.9 3
               
Cold Crushing Strength, Kg/cm2, min
at 1100C/24 hrs 650 700 750 650 800 900 1000
at 8150C/3 hrs 800 800 800 750 900 1000 1050
at 11000C/3 hrs 900 900 900 850 1000 1100 1100
at 13500C/3 hrs 1000 1000 1000 1000 1200 1200 1250
               
Thermal Conductivity
Permanent Linear Change, %, max              
After heating at 8150C/3 hrs +/-0.2 +/-0.2 +/-0.2 +/-0.2 +/-0.2 +/-0.2 +/-0.2
After heating at 11000C/3 hrs +/-0.3 +/-0.3 +/-0.30 +/-0.30 +/-0.3 +/-0.3 +/-0.3
After heating at 15000C/3 hrs +/-2.0 +/-1.5 +/-1.5 +/-1.0 +/-1.5 +/-1.5 +/-1.0
Thermal Conductivity, Kcal/m/hr/degC, max              
at 3000C HF 0.9744 1.1136 1.3456 1.392 1.9488 2.552 2.61
at 5000C HF 1.2064 1.276 1.4268 1.45 2.03 2.6796 2.668
at 8000C HF 1.3456 1.392 1.4964 1.566 2.088 2.726 2.726


Packaging : 50 kgs bag

Storage Life : 9 Months


ABOVE LC/ULCC CASTABLES OFFERS FOLLOWING ADVANTAGES:

  • Low CaO content ensures high refractoriness.
  • Excellent hot strength and MOR at all temperatures.
  • Lower apparent porosity after firing offers better corrosion resistance.
  • High abrasion and spalling resistance.
  • High volume stability.

Refratab 94 and Refratab 97 are very high purity White Tabular Alumina based castables meant for critical applications in fertilizer, refinery, petrochemical and steel industries. These castables can withstand service temperature upto 1850 C in carbon monoxide and hydrogen atmospheres.

These castables have high bulk density, high mechanical strength at all temperatures, excellent workability, good abrasion resistance, excellent resistance to thermal spalling and good volume stability.

Refratab 97L is a bubble Alumina based Insulating Castable, which is suitable for high temperature Application (upto 1800 C). This product has an extremely low level of impurity, high strength, low density and low thermal conductivity.


BRANDS Refratab-94 Refratab Refratab 97 L
Chemical Analysis
Alumina ( Al2O3), %, min 93 95 93
Iron Oxide (Fe2O3), %, max 0.3 0.3 0.3
Lime (CaO), %, max 5 3.5 5.0
 
Physical Analysis
Service temperature, 0C, max 1800 1850 1800
Bulk Density, Gm/cc, min 2.75 2.75 1.70 max
Water required for casting, % 8.5-10.5 8.5-10.5 12-16
Grain Size, mm, max 6 6 6
 
Cold Crushing Strength Kg/cm2, min      
at 1100C/24 hrs 600 400 110
at 8150C/3 hrs 350 280 75
at 14500C/3 hrs 400 - 100
       
Thermal Properties
Permanent Linear Change, %      
After heating at 8150C/3 hrs +/-0.2 +/-0.2 +/-0.2
After heating at14500C/3 hrs +/-0.8 +/-1.0 +/-1.0

Storage Life: 9 Months.

Packaging: 25 Kgs Bag.

High Purity Dense Castables are refractory castables suitable for high temperature applications. These castables are available in various grades suitable for a specific range of operational conditions.

These refractory castables are hydraulic setting and can be casted or moulded to any shape and can also modified for gunning of furnace linings.


BRANDS Refracast A Refracast A Supreme Refracast K Refracast K Spl Refracast C Refracast C Spl Refracast C Super
Chemical Analysis
Alumina (Al2O3), %, min 86 82 58 60 49 50 52
Iron Oxid (Fe2O3), %, max 1.2 1.7 1.2 1.2 1.3 1.2 1.7
Physical Analysis
Service temperature, 0C 1700 1650 1600 1600 1500 1500 1500
Grain Size, mm 0-6 0-6 0-6 0-6 0-6 0-6 0-6
Water required for casting, % 9-11 9-11 9-11 9-11 9.5-11.5 9.5-11.5 9.5-11.5
Bulk Density, Gm/cc, min 2.7 2.6 2.2 2.25 2.1 2.15 2.25
               
Cold Crushing Strength, Kg/cm2,min              
at 1100C/24 hrs 600 500 350 400 350 400 500
at 8150C/3 hrs 430 300 250 300 250 300 400
at 11000C/3 hrs 330 330 230 250 220 200 300
At 15000C/3 hrs 650 550 450 480 - - 500
Thermal Properties
Permanent Linear Change, %, max
After heating at 11000C/3 hrs +/-0.30 +/-0.4 +/-0.3 +/-0.3 +/-0.3 +/-0.3 +/-0.3
After heating at 14500C/3 hrs +/-1.5 +/-2.0 +/-1.75 +/-1.75 +/-2.0 +/-2.0 +/-2.0
               
Thermal Conductivity, W/mK, max              
at 4000C HF 1.33 1.32 0.94 0.96 0.87 0.90 0.94
at 6000C HF 1.39 1.37 0.96 0.99 0.90 0.94 0.96
at 8000C HF 1.46 1.44 1.00 1.02 0.94 0.97 1.00

Packaging : 25 Kgs
Storage Life : 12 Months

With the advancement in properties of castables by new techniques and innovations, superior grade castables which can be easily installed against shuttering, faster setting and strength development without the elaborate curing and heat dry out operations has facilitated industry applications in a significant way especially achieving a quicker turnaround.

With the use of special additives developed in house using our Raw Material Base, superior bond in the matrix is achieved.

Refrachem Castables have excellent properties namely shorter drying time, better refractoriness, better chemical resistance, longer working life and shelf life.


BRANDS Refrachem 60 Refrachem 70 Refrachem 90
Chemical Analysis
Alumina (Al2O3), %, min 60 60 70
Iron Oxide (Fe2O3), %, max 1.5 1.0 1.0
Physical Analysis
Service temperature, 0C 1600 1600 1700
Bulk Density, Gm/cc, min 2.6 2.65 2.85
Apparent Porosity, %, max 16 16 18
Cold Crushing Strength, Kg/cm2, min 750 800 900
Thermal Properties
Permanent Linear Change @ 14500C/3 hrs, %, max +/-0.5 +/-0.5 +/-0.5

Refracrete medium purity dense castables are suitable for use in applications. This group of castables contains medium purity high alumina cement as the refractory binder and castables are used for oxidising atmospheres.

These refractory castables are hydraulic setting and can be casted or moulded to any shape and can also be modified for gunning of furnace linings.


BRANDS Refracrete Normal Refracrete Super Refracrete Spl.
Chemical Analysis
Alumina (Al2O3), %, min 45 68 47
Iron Oxide (Fe2O3), %, max 3 5 3
Physical Analysis
Service temperature, 0C 1400 1450 1400
Grain Size, mm 0-6 0-6 0-6
Water required for casting, % 10.5-12.5 10-12 10-12
Bulk Density, Gm/cc, min 2.1 2.45 2.2
       
Cold Crushing Strength Kg/cm2, min      
at 1100C/24 hrs 250 350 400
at 8150C/3 hrs. 200 250 300
at 11000C/3 hrs. 150 200 200
at 13500C/3 hrs 250 350 300
Thermal Properties
Permanent Linear Change, %, max      
After heating at 8150C/3 hrs - - -
After heating at 11000C/3 hrs +/-0.3 +/-0.3 +/-0.3
After heating at 13500C/3 hrs +/-1.0 +/-1.5 +/-1.25
       
Thermal Conductivity, Kcal/m/hr/degC, max      
at 4000C HF 0.86 1.08 0.87
at 6000C HF 0.90 1.10 0.93
at 8000C HF 0.97 1.14 1.00

Storage Life: 12 Months.

Packaging: 50 Kgs.

Refralite are a range of insulating castables to conserve heat in furnaces. They are light but strong and have low conductivity, serve as either hot face or back up insulating refractory lining.

These castables are produced in density range of 400 to 1600 kg/m3. They are available mainly in two different grades – medium purity and high purity. The high purity (Low Iron) variety is suitable for reducing environments.


BRANDS Refralite-4 Refralite-7 Refralite-9 Refralite-10S Refralite-11 Refralite-13 Refralite-15
Chemical Analysis
Alumina (Al2O3), %, min 30 32 33 35 36 38 39
Iron Oxide (Fe2O3), %, max 4 4 4 3.5 3.5 3.2 3.2
Physical Analysis
Service temperature, 0C 1000 1100 1200 1260 1300 1350 1350
Grain Size, mm 0-6 0-6 0-6 0-6 0-6 0-6 0-6
Water required for casting, % 80-100 60-65 40-45 40-48 30-35 25-30 23-28
Bulk Density, Gm/cc, max 0.65 0.85 1.05 1.15 1.3 1.45 1.65
               
Cold Crushing Strength, Kg/cm2, min              
at 1100C 6 12 15 20 35 50 90
at 8150C 3 4 6 15 25 30 60
at 11000C - 6 - 12 25 30 60
at 13000C - - - - 40 50 70
Thermal Properties
Permanent Linear Change, %, max              
After heating at 8150C/5 hrs +/-0.6 +/-0.8 +/-0.6 +/-0.8 +/-0.4 +/-0.3 +/-0.3
At Service Temperature/5 hrs - +/-1.2 +/-1.00 +/-1.2 +/-1.00 +/-0.8 +/-1.00
               
Thermal Conductivity, W/mK, max              
at 3000C HF 0.08 0.17 0.28 0.29 0.31 0.35 0.45
at 5000C HF 0.10 0.23 0.3 0.31 0.35 0.37 0.49
at 8000C HF 0.14 0.25 0.32 0.34 0.37 0.41 0.52

Storage Life: 12 Months.
Packaging: 25 Kgs.

Refralite are a range of insulating castables to conserve heat in furnaces. They are light but strong and have low conductivity, serve as either hot face or back up insulating refractory lining.

These castables are produced in density range of 400 to 1600 kg/m3. They are available mainly in two different grades medium purity and high purity. The high purity (Low Iron) variety is suitable for reducing environments.


BRANDS Refralite 9 Li Refralite-11Li Refralite-13Li Refralite- 15Li Refralite-HT
Chemical Analysis
Alumina (Al2O3), %, min 40 43 45 45 60
Iron Oxide (Fe2O3), %, max 1 1.5 1.5 1.5 1
Physical Analysis
Service temperature, 0C 1260 1350 1400 1400 1500
Grain Size, mm 0-6 0-6 0-6 0-6 0-6
Water required for casting, % 45-50 34-40 27-32 23-28 25-30
Bulk Density, Gm/cc, max 0.95 1.3 1.5 1.65 1.65
 
Cold Crushing Strength, Kg/cm2, min          
at 1100C 25 50 80 100 100
at 8150C 20 30 40 80 40
At Service Temperature 30 50 50 70 50
Thermal Properties
Permanent Linear Change, %, max
After heating at 8150C/5 hrs +/-0.3 +/-0.3 +/-0.3 +/-0.3 +/-0.3
At Service Temperature/5 hrs +/-1.0 +/-1.0 +/-0.6 +/-1.0 +/-1.5
Thermal Conductivity, W/mK, max
at 3000C HF 0.24 0.35 0.41 0.44 0.43
at 5000C HF 0.27 0.37 0.44 0.49 0.48
at 8000C HF 0.29 0.42 0.48 0.51 0.5

Storage Life: 12 Months.
Packaging: 25 Kgs Bags.

Plastic refractory castable is a mixture of refractory aggregate, binder and additives that can be molded like clay or putty. They are installed by hand or with use of Pneumatic Hammer to form the Refractory Mass. Once applied, plastic refractory hardens and forms a dense, durable lining which can be used in various applications and locations.

It has non wetting characteristics, thermal shock resistance, abrasion resistance, strong plasticity and good bonding performance.


BRANDS Refraplast 60 Refraplast 80 Refraplast 90
Chemical Analysis
Alumina (Al2O3), %, min 60 80 88
Iron Oxide (Fe2O3), %, max 1.5 1 0.5
Physical Analysis
Service temperature, 0C 1600 1650 1700
Grain Size in mm 0-6 0-4 0-4
Bulk Density, Gm/cc, min 2.1 2.4 2.6
Cold Crushing Strength, Kg/cm2, min
at 3000C/3 hrs 100 150 150
Thermal Properties
Pyrometric Cone Euivalent, Orton Cone, min +34/1763 +36/1804 +7/1820
Permanent Linear Change, %, max
After heating at 14500C/3 hrs +/-1.5 +/-1.5 +/-1.5

Storage Life : 3 Months


Refracoat a special refractory coating material specially meant for protection of linings-Fire Bricks, Monolithic, Castables, Ceramic Blankets and Shells in Furnaces, Boilers and various high temperature vessels.

Main Application:

  • Reduces the effect of Thermal shock and to eliminate surface cracking phenomena, protects Refractories against aggressive effects of fuel oil,Gases and solid fuels.
  • Provides Gas tight surface and reduces energy losses.
  • Reduces slag adhesion.
  • Increase in working life of Furnace
  • Reduces cost of maintenance shutdown.
  • Reduces fuel consumption.

Protection to Refractory linings

  • Fire Bricks
  • Castables
  • Ramming Masses
  • Ceramic Blanket & Modules
  • Plastics and Steel Shells in variety of Furnaces
  • Boilers and High Temperature Vessels

Application

Refracoat - Z mixed with clean tap water to form a smooth paste. Add required water to adjust the consistency of the mix to suit Brushing, Trowelling or Spray applications.

Packing

50Kgs. in air tight drums

Drying

The coating must be allowed to air dry for a minimum of 12 hours.

Firing

Raise firing temperature as slowly and evenly as possible typically at 25˚C per hour until 125˚C is reached. Thereafter for Refracoat - Z, the furnace may be heated to its working temperature as usual.


Chemical Properties
Zirconia (ZrO2) 62%min
Silica (SiO2) 32%
Physical Properties
Temperature Range Up-to 1900˚C max.
Dry Density 3.30 gm/cc
Thermal Expansion 1% from 0˚C to 1900˚C
Volume Shrinkage 0.25% max.
K Value 0.43 Kcal Units @ 500˚C
Electrical Property Good Insulator after drying
Emissivity 0.58
Thermal Shocks Excellent Resistance since coating

Becomes pyroplastic above 200˚C-250˚C


* Data represent typical average properties and do not constitute a specification.