Janta Overseas
Portfolio Brief

Insulating Bricks

As an ISO certified company, we Janta Overseas manufacture a high quality Light Weight Insulating Refractory Bricks which are used in high temperature applications ranging from 1000 °C to 1700°C.

Depending on the application, these lightweight, porous bricks can be manufactured from a range of high purity refractory clays and other ceramic raw materials. The hydraulic single-press process or the extrusion method are employed for manufacturing. A properly graded organic filler is used in fire bricks, and it is burned off throughout production to provide a consistent and regulated pore structure.

When compared to other insulating refractories, Insulating Bricks offer the most economical insulation at temperatures above 1000°C, which is why they are typically utilized in these applications. When compared to ceramic fiber insulation, structural qualities of insulating bricks also provide superior abrasion resistance and chemical resistance in high-temperature application.

Technical Specification

Insulating Bricks

Parameters

Grade-23 (JM23)

Grade-26 (JM26)

Grade-28 (JM28)

Grade-30 (JM30)

Grade-32 (JM32)

Parameters

Al2O3

Grade-23 (JM23)

44-46 %

Grade-26 (JM26)

57-60 %

Grade-28 (JM28)

67-70 %

Grade-30 (JM30)

77-80 %

Grade-32 (JM32)

88-90 %

Parameters

Fe2O3

Grade-23 (JM23)

1.20-1.50 %

Grade-26 (JM26)

1.30-1.60 %

Grade-28 (JM28)

1.30-1.60 %

Grade-30 (JM30)

1.50-2.00 %

Grade-32 (JM32)

1.10-1.30%

Parameters

Apparent Porosity (%)

Grade-23 (JM23)

12-16%

Grade-26 (JM26)

12-16%

Grade-28 (JM28)

11-15 %

Grade-30 (JM30)

12-16%

Grade-32 (JM32)

11-15 %

Parameters

Bulk Density (g/cm³) Min.

Grade-23 (JM23)

2.30

Grade-26 (JM26)

2.55

Grade-28 (JM28)

2.65

Grade-30 (JM30)

2.80

Grade-32 (JM32)

3.00

Parameters

Cold Crushing Strength,CCS (kg/cm2)

Grade-23 (JM23)

800-900

Grade-26 (JM26)

900-1100

Grade-28 (JM28)

1000-1300

Grade-30 (JM30)

1100-1400

Grade-32 (JM32)

1200-1500

Parameters

Permanent Linear Change, PLC (%)

Grade-23 (JM23)

-1.8 to 1.8 at 1500⁰C/3h

Grade-26 (JM26)

-1.5 to 1.5 at 1500⁰C/3h

Grade-28 (JM28)

-1.5 to 1.5 at 1500⁰C/3h

Grade-30 (JM30)

-1.5 to 1.5 at 1500⁰C/3h

Grade-32 (JM32)

-1.0 to 1.0 at 1500⁰C/3h

Parameters

Pyrometric Cone Equivalent, PCE (⁰C/OC) Min.

Grade-23 (JM23)

1665/30

Grade-26 (JM26)

1763/34

Grade-28 (JM28)

1785/35

Grade-30 (JM30)

1804/36

Grade-32 (JM32)

1820/37

Parameters

Service Temperature

Grade-23 (JM23)

1450- 1500 ⁰C

Grade-26 (JM26)

1500- 1550 ⁰C

Grade-28 (JM28)

1550- 1600 ⁰C

Grade-30 (JM30)

1600- 1650 ⁰C

Grade-32 (JM32)

1650- 1700 ⁰C

Technical Specification

CFK & HFK Insulation Bricks

Features

Applications