RATHLOC® MORTAR-FREE KILN CAR REFRACTORY SYSTEM

RATHLOC® MORTAR-FREE KILN CAR REFRACTORY SYSTEM

RATHLOC® INTERLOCKING BRICK SYSTEM:


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


RATHLOC® INTERLOCKING BRICK SYSTEM – INSULATING BRICK
Properties Units FL 27-12 FL 32-12 FL 33-13/2 FL 33-16/2
Classification Temperature °F
°C
2732
1500
3200
1760
3270
1800
3270
1800
Density lbs/ft³
(kg/m³)
75
(1200)
75
(1200)
81
(1300)
100
(1600)
Cold Crush Strength Psi
MPa
725
5
870
6
1740
12
2175
15
Permanent Linear Change -
24 hrs
% -1.4 @
2750°F
+0.7 @
3150°F
+0.4 @
3272°F
+0.4 @
3272°F
Thermal Conductivity
392°F (200°C)
752°F (400°C)
1112°F (600°C)
1472°F (800°C)
1832°F (1000°C)
2192°F (1200°C)
2552°F (1400°C)
BTUin/ hrft² °F
(W/mK)
3.6 (0.52)
4.0 (0.57)
4.4 (0.63)
4.8 (0.69)
-
-
-
4.6 (0.66)
4.7 (0.67)
4.9 (0.71)
5.3 (0.77)
6.0 (0.86)
-
-
7.9 (1.13)
8.1 (1.16)
8.3 (1.19)
8.6 (1.22)
-
-
-
8.1 (1.16)
8.2 (1.17)
8.3 (1.19)
8.6 (1.22)
-
-
-
Chemical Analysis Al2O3
Si02
Fe203
MgO + CaO
Alk. Oxides (Na, K)
% 66
31
1.2
-
-
78
21
0.2
0.1
-
91
8.1
0.2
-
-
91
8.1
0.2
-
-


RATHLOC® INTERLOCKING BRICK SYSTEM – DENSE BRICK
Properties Units AK70 K901 K901 HT
Density lbs/ft³
(kg/m³)
168
2.7
187
3.0
196
3.15
Chemical Analysis Al2O3
Si02
Fe203
70
28
1
90
9
0.15
90
9
0.15
Apparent Porosity %
< 15
16
12
Refractoriness under load,
DIN 51053 to ºF
°C
°F
> 3000
> 1650
> 3000
> 1650
> 3000
> 1650
Creep in Compression
Load 0.2Mpa (28.4Psi) Temp.
1500ºC (2732ºF)
e25[%]
s25-15[%]
2.79
0.052
0.25
NA
0.01
0.001
Thermal Shock Resistance
DIN51068-1, water quench
Cycles > 100 110 90
Hot Flexural Strength
@ 1500ºC (2732ºF)
Psi (MPa) 407 (2.8) 575 (4.0) 1585 (11.0)

Layering design determined by load, cycle, etc.



RATHLOC® LARGE BELL KILN CAR




16' x 18' kiln car for 1610°C – as assembled


16’ x 18’ kiln car for 1610°C – after 1 year service


RATHLOC® ELEVATOR KILN – 1620°C




RATHLOC® INTERLOCKING BRICK SYSTEM – TUNNEL KILN CARS


  • After 8 months service
  • Harrop Tunnel Kiln
  • 1620°C firing temp
  • 20 hr cycle cold to cold

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