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J. R. Refractory

406, Aditya Plaza, Near Jodhpur Cross Road, Satellite, Ahmedabad, Gujarat - 380015, India

Mobile : +91-9825012011

Call Us : 08043693034

Trusted Member at ExportersIndia.com

Insulating Bricks


Insulating Bricks

Adhering to national and international quality standards, we provide an ample range of flawless Insulating Bricks. We have carved a niche as one of the blooming Refractory Insulating Bricks manufacturers and Exporters based in India. Our Mica Insulating Bricks are extensively used in various heating vessels like furnaces, kilns etc. for maintaining the temperature. Available in various sizes and dimensions, our Mica Insulating Bricks can be customized as per the specifications of the clients. High strength, anti abrasive nature and light weight are some of the unique features of our Mica Insulating Bricks.


Properties Grade A [JRI-A] Grade B [JRI-B] Grade C [JRI-C]
Bulk Density (gm/cc, max.) 1.00 0.90 0.75
Apparent Porosity (%, min.) 60 60 65
Cold Crushing Strength (kg/cm2, min.) 20 15 7
Pyrometric Cone [ASTM] No. (min.) 32 27
Suitable for temperatures up to (0C) 1500 1250 850
Thermal Conductivity at Hot Face temperature of 6000C (kcal/m/hr/0Cmax) 0.35 0.23 0.20
PLCR (0C/3 hours, max.) ±1.5 at 12500C ±1.5 at 12000C ±1.5 at 10000C