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Calcium Silicate Insulation Boards

 

Insulation brick based on Calcium Silicate is reacted Calcium Silicate containing reinforcing fibers (non-asbestos). It offers thermal efficiency of flexible insulation like mineral wool and strength of conventional Insulation Bricks.

 

Insulation pipes are ideal replacement for fibrous insulation and are un-matched in places where insulation is exposed to water, floor traffic, and impact loads etc.

 

Insulations based on Calcium Silicate meet specifications as under: -

  • IS 8154 & 8428
  • Relevant Naval Specifications
  • ASTM C 533-90
  • B.S.3958 part II.

Advantages: -

  • Low Thermal Conductivity
  • Rigid & Light Weight (Density 250 kg/M3)
  • Good Mechanical Strength (Above 10kg./cm2)
  • Fire Resistant
  • Low shrinkage
  • Low specific Heat
  • Non Combustible & Non Corrosive
  • Low Maintenance Cost
  • Re-usable & Long life
  • Easily Workable (cuts easily)

Applications: -

  • Cement: -         Preheaters/Precalciners, Coolers, TAD etc.
  • Aluminum: -       Reduction pots, Other Thermal Process Equipment
  • Glass: -            Furnace, Recuperators, Annealing etc.
  • Steel: -            Various types of furnaces as refractory back up.
  • Power Plants: -  Boilers, Steam Lines, Recuperators etc.
  • Fertilizers:-       Reformers, Steam Lines, Furnaces, incinerators, high temp. equipments,

                          Hot Gas & Chemical lines etc.

  • Ceramic: -         Tunnel kilns.
  • Ship Building: -   Boilers, Turbines, Steam Lines, Fuel Gas ducts etc.
  • Chemicals: -      Boilers, High Temp. Reactors, Fuel Gas ducts, Steam/

                          Thermic fluid lines, Dryers, Furnaces etc.

  • Others: -          Significant fuel saving can be obtained in Sugar Mills, Foundries

                          Rolling Mills and other industries, which use thermal equipments

                          at High Temperature.


 

 

Properties

IS 9428

ASTM

C533:90

HE GRADE

 

 

TYPE I

TYPE II

800

1000

Temperature © MAX.

950

649

871

800

1000

Bulk Density: (kg/m3)

TEST VALUES

Avg.value:                                     

200-320

220-280

(max)

240

(max)

240

220-270

230-275

Compressive strength,

Reduction in thickness, max.

Dry, under a load of 415 KN/m2

Wet, under a load of 170 KN/m2

After 18 hrs. Of immersion in water.

Dry, under a load of 345 KN/m2

After 24 hrs heat soak:

 

5%

5%

 

 

5%

5%

-

 

 

-

5%

-

 

 

-

3%

3.5%

 

 

3.5%

 

3%

3.5%

 

 

3.5%

 

Flexural Strength (KN/m2) min.

240

310

310

400

400

Heat Resistance after heat soak at max. Temp. For 24 hrs.

Linear shrinkage (length),

Max. :

Typical:

Loss in mass. Max:

 

 

 

2 %

-

15 %

 

 

 

2 %

-

-

 

 

 

2.5 %

-

-

 

 

 

2 %

1.6 %

15 %

 

 

 

2 %

1.8 %

15 %

 

Thermal Conductivity (W/mk)

Max. at mean temp.

200 C

300 C

400 C

500 C

 

 

0.080

0.097

0.121

0.147

 

 

0.079

0.095

-

-

 

 

0.095

0.110

0.136

-

 

 

0.070

0.080

-

-

 

 

0.080

0.090

0.105

0.120

 

Cold crushing Strength (CCS)

(Kg/cm2), min

Light Grade    (k/value0.12W/mk)

Medium Grade(     “    0.15W/mk)

 

 

 

 

 

 

 

10

 

 

25