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RATHLOC Mortar Free Kiln Car Refractory System

Rath Incorporated provides proven refractory solutions. The new RATHLOC Mortar-Free Kiln Car Refractory Systems are offered in these insulating and dense brick configurations:

• Button and dimple system interlocking layers
• Mortar-free
• Hydraulically pressed, high-fired brick
• Grades available for load-bearing or insulating layers
• Designs for applications up to 1800°C
• Tunnel, bell, elevator, or shuttle kilns
• One set of molds in USA and identical set in Austria
  

RATHLOC Interlocking Brick System – Insulating Brick

FL 27-12

• Classification Temp: 2732°F, 1500°C
• Density: 75lbs/ft³ (1200 kg/m³)
• Cold Crush Strength: 725 Psi, 5 MPa
• Permanent Linear Change – 24 hrs: -1.4% @ 2750°F
• Thermal Conductivity: BTUin/hrft² °F (W/mK)
• 1112°F(600°C): 3.6 (0.52)
• 1472°F(800°C): 4.0 (0.57)
• 1832°F(1000°C): 4.4 (0.63)
• 2192°F(1200°C): 4.8 (0.69)
• Chemical Analysis
• Al₂O₃: 66%
• SiO₂: 31%
• Fe₂O₃: 1.2%

FL 32-12

• Classification Temp: 3200°F, 1760°C
• Density: 75lbs/ft³ (1200 kg/m³)
• Cold Crush Strength: 870 Psi, 6 MPa
• Permanent Linear Change – 24 hrs: +0.7% @ 3150°F
• Thermal Conductivity: BTUin/hrft² °F (W/mK)
• 1112°F(600°C): 4.6 (0.66)
• 1472°F(800°C): 4.7 (0.67)
• 1832°F(1000°C): 4.9 (0.71)
• 2192°F(1200°C): 5.3 (0.77)
• 2552°F(1400°C): 6.0 (0.86)
• Chemical Analysis
• Al₂O₃: 78%
• SiO₂: 21%
• Fe₂O₃: 0.2%
• MgO + CaO: 0.1%

FL 33-13/2

• Classification Temp: 3270°F, 1800°C
• Density: 81lbs/ft³ (1300 kg/m³)
• Cold Crush Strength: 1740 Psi, 12 MPa
• Permanent Linear Change – 24 hrs: +0.4% @ 3272°F
• Thermal Conductivity: BTUin/hrft² °F (W/mK)
• 1112°F(600°C): 7.9 (1.13)
• 1472°F(800°C): 8.1 (1.16)
• 1832°F(1000°C): 8.3 (1.19)
• 2192°F(1200°C): 8.6 (1.22)
• Chemical Analysis
• Al₂O₃: 91%
• SiO₂: 8.1%
• Fe₂O₃: 0.2%

FL 33-16/2

• Classification Temp: 3270°F, 1800°C
• Density: 100lbs/ft³ (1600 kg/m³)
• Cold Crush Strength: 2175 Psi, 15 MPa
• Permanent Linear Change – 24 hrs: +0.4% @ 3272°F
• Thermal Conductivity: BTUin/hrft² °F (W/mK)
• 1112°F(600°C): 8.1 (1.16)
• 1472°F(800°C): 8.2 (1.17)
• 1832°F(1000°C): 8.3 (1.19)
• 2192°F(1200°C): 8.6 (1.22)
• Chemical Analysis
• Al₂O₃: 91%
• SiO₂: 8.1%
• Fe₂O₃: 0.2%

RATHLOC Interlocking Brick System – Dense Brick

AK70

• Density: 168 lbs/ft³ (2.7 g/cm³)
• Chemical Analysis:
• Al₂O₃: 70%
• SiO₂: 28%
• Fe₂O₃: 1%
• Apparent Porosity: <15%
• Refractoriness under load, DIN 51053 to ºF: > 3000°F, > 1650°C
• Creep in Compression Load 0.2Mpa (28.4Psi) Temp. 1500ºC (2732ºF): 2.79 e25[%], 0.052 s25-15[%]
• Thermal Shock Resistance DIN51068-1, water quench: > 100 Cycles
• Hot Flexural Strength @ 1500ºC (2732ºF): 407 Psi (2.8 MPa)

K901

• Density: 187 lbs/ft³ (3.0 g/cm³)
• Chemical Analysis:
• Al₂O₃: 90%
• SiO₂: 9%
• Fe₂O₃: 0.15%
• Apparent Porosity: 16%
• Refractoriness under load, DIN 51053 to ºF: > 3000°F, > 1650°C
• Creep in Compression Load 0.2Mpa (28.4Psi) Temp. 1500ºC (2732ºF): 0.25 e25[%]
• Thermal Shock Resistance DIN51068-1, water quench: > 110 Cycles
• Hot Flexural Strength @ 1500ºC (2732ºF): 575 Psi (4.0 MPa)

K901 HT

• Density: 196 lbs/ft³ (3.15 g/cm³)
• Chemical Analysis:
• Al₂O₃: 90%
• SiO₂: 9%
• Fe₂O₃: 0.15%
• Apparent Porosity: 12%
• Refractoriness under load, DIN 51053 to ºF: > 3000°F, > 1650°C
• Creep in Compression Load 0.2Mpa (28.4Psi) Temp. 1500ºC (2732ºF): 0.01 e25[%], 0.001 s25-15[%]
• Thermal Shock Resistance DIN51068-1, water quench: > 90 Cycles
• Hot Flexural Strength @ 1500ºC (2732ºF): 1585 Psi (11.0 MPa)

Rath Incorporated offers a broad line of refractories and design engineering services for the construction of kiln cars for application temperatures up to 1800°C. The Rath Incorporated product line includes dense, insulating and low mass fiber based products. Mortar free designs are available, using interlocking bricks, tongue-in-groove IFB and/or pre-fired castable shapes. Low mass designs are possible using combinations of fiber modules, fiber blanket and vacuum formed boards and shapes. Rath Incorporated can design cars suited for any type of kiln or application, with maximum durability, high load carrying capability and lowest possible thermal mass.