Fire Clay Brick


Fire Clay Bricks

What is Fire Clay Brick

Fire clay bricks use clay that including shale, coal gangue such powder as the major raw material, undergoing a series of working procedures as mixture treatment, forming, drying and roasting. Which are mainly made from chamotte, flint clay and combining clay powder, being high pressure pressed and sintered in high temperature.Usually inexpensive, Clay Bricks are used to construct outer area of a furnace. Though they are baked at high temperatures, they can still be susceptible to cracks. They have a limited capacity to withstand extremely high temperature. Thus, these Refractory Bricks are not used in the internal parts of a kiln.

Fire Clay Bricks

Different Materials of Fire Clay Brick

Different types of Fire Bricks are manufactured for different heating systems and each variety has specific features, advantages and disadvantages. Here are a few types of commonly sought-after Fire Bricks for various Heating Appliances:

Heavy Duty Fire Clay Brick: Amongst the most expensive types of Fire Bricks, Heavy Duty Fire Clay Bricks contain around 50% alumina and can easily withstand extremely high temperatures.

Insulation Fire Clay Bricks: Insulation Fire Clay Bricks absorb heat and prevent it from expelling in the atmosphere. Being extremely light weight, they are inexpensive as compared to its counterparts.

Dense Fire Clay Bricks: Dense fire clay Bricks contain silica and alumina. These bricks are known for their durability and strength.

Different Materials of Fire Clay Brick Application

Heavy Duty Fire Clay Brick Generally used in large furnaces with high temperature, they are seldom used in an oven, as they tend to get heated more quickly.

Insulation Fire Clay Bricks are used in constructing the outer area of a furnace or an oven.

Dense fire clay Bricks are used to manufacture different types of ovens and furnaces which may be used for both commercial as well as domestic purposes.

Fire Clay Brick Technical Index

Item/Grade Fire clay brick
SK-30 SK-32 SK-34 SK-35
AL2O3% (≥) 30 35 38 45
Fe2O3% (≤) 2.5 2.5 2.0 2.0
Refractoriness(SK) 30 32 34 35
Refractoriness under load, 0.2MPa, °C (≥) 1250 1300 1360 1420
Apparent porosity (%) 22-26 20-24 20-22 18-20
Bulk density (g/cm³) 1.9-2.0 1.95-2.1 2.1-2.2 2.15-2.22
Cold crushing strength ,MPa (≥) 20 25 30 40

Where Can Buy Different Materials of Fire Clay Bricks

RONGSHENG refractory is an enterprise specializes in producing and selling different materials of fire clay bricks. If you have any need in fire clay bricks, you can contact us for free anytime.