• High Strength Alkali-resistant Brick

High Strength Alkali-resistant Brick

  • Al2O3:25—40
  • SiO2:65-70
  • Refractory Temperature(℃):≥1650
  • Volume Density(g/cm3):≥2.20
  • Refractoriness Under Load (0.2MPa T0.6,℃):≥1300
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Features:
Strong alkaline-resistance, good thermal shock resistance, high performance, etc
Applications:
Preheater, calciner, tertiary air duct of cement dry-process kiln .


General,High Strength,Vault Alkali-resistant Brick Physical and Chemical Performance Index

Item

Index

General Alkali-resistant Brick

High Strength Alkali Resistant Brick

General Alkali-resistant Brick PNJ-1

Vault Alkali-resistant Brick PNJ-2

Apparent Porosity  % ≤

21

20

19

Cold Crushing Strenghth, Mpa ≥

30

40

60

Refractoriness Under Load, 0.2Mpa  ≥

1300

1350

1250

Thermal Shock Resistance1100℃),time ≥

10

10

25

Alkali Resistance1100x5h

Grade One

Chemical Component

AL2O3,%

25-40

Fe2O3,% ≤

2

Insulating Alkali-resistant Brick GRNJ Physical Performance Index

Item

Index

Bulk Density    %   ≤

1.65

Cold Crushing Strength, Mpa ≥

15

Termal Conductivity Coefficient (Average 350℃)W/m.K ≤

0.7

Linear Change On Reheating(1250℃x3h)% ≤

2

Alkali Resistance(1100℃x5h)

Grade One

 


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