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Plastic Refractory

SPECIFICATION

Quality Normal
KA PREF 85 KA PREF 70 KA PREF 60 KA PREF 45
Physical Properties Application Limit Temp. (℃) 1800 1700 1650 1600
Required quantity (t/m3) 2.9 2.75 2.5 2.3
CCS (kg/cm2)

@ 110℃x24h

300(60) 200(50) 120(30) 120(35)

@ 1000℃x3h

500(80) 250(50) 250(35) 250(30)

@ 1500℃x3h

600(100) 400(70) 700(40) 600(90)
PLC (%)

@ 110℃x24h

-0.7 -0.8 -0.9 -0.9

@ 1000℃x3h

-0.6 -0.7 -0.5 -0.5

@ 1500℃x3h

0.15 0 0.15 0.15
TC (kcal/mh℃)

@ 500℃

1.2 1.05 0.81 0.81

@ 1000℃

1.37 1.2 1.03 0.9
Chemical Properties (%) Al2O3 85 73 60 46
SiO2 11 20 33 47
Main Applications
Nonferrous Metal Furnace, Incinerator, Reheating Furnace, Petrochemical plants, Heater & Boilers

Quality Normal
KA PREF 40 KA PREF 50 KA PREF 55
Physical Properties Application Limit Temp. (℃) 1550 1500 1450
Required quantity (t/m3) 2.25 2.2 2.15
CCS (kg/cm2)

@ 110℃x24h

80(20) 80(20) 60(20)

@ 1000℃x3h

250(30) 250(30) 250(30)

@ 1500℃x3h

600(90) @ 1400℃ 550(80) @ 1400℃ -
PLC (%)

@ 110℃x24h

-1 -1 -1

@ 1000℃x3h

-0.3 -0.3 -0.25

@ 1500℃x3h

0.2 @ 1400℃ 0.2 @ 1400℃ -
TC (kcal/mh℃)

@ 500℃

0.78 0.75 0.73

@ 1000℃

0.87 0.84 0.82
Chemical Properties (%) Al2O3 40 39 37
SiO2 50 53 55
Main Applications
Nonferrous Metal Furnace, Incinerator, Reheating Furnace, Petrochemical plants, Heater & Boilers

Quality Special
KA SPREF 90 KA SPREF 85 KA SPREF 80
Physical Properties Application Limit Temp. (℃) 1700 1650 1600
Required quantity (t/m3) 3 2.9 2.8
CCS (kg/cm2)

@ 110℃x24h

350(80) 300(70) 300(70)

@ 1000℃x3h

500(110) 500(100) 450(100

@ 1500℃x3h

600(150) @ 1400℃ 600(140) @ 1400℃ 550(13) @ 1400℃
PLC (%)

@ 110℃x24h

-0.6 -0.6 -0.7

@ 1000℃x3h

-0.7 -0.7 -0.8

@ 1500℃x3h

-0.5 @ 1400℃ -0.5 @ 1400℃ -0.6 @ 1400℃
TC (kcal/mh℃)

@ 500℃

1.9 1.8 1.7

@ 1000℃

1.8 1.4 1.3
Chemical Properties (%) Al2O3 90 85 80
SiO2 5 7 15
Main Applications
Nonferrous Metal Furnace, Incinerator, Reheating Furnace, Petrochemical plants, Heater & Boilers
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