Earthy Yellow Machine Pressed 37 Hole Clay Refractory Brick

Earthy Yellow Machine Pressed 37 Hole Clay Refractory Brick

Standard sizing:37 holes (φ20) checker brick ,Special size and OEM Service also provide!
The size is precise, providing kinds of shapes according to customer's drawing

Definition:

    The mineral composition of clay bricks is mainly kaolinite (Al2O3·2SiO2·2H2O) and 6% to 7% impurities (oxides of potassium, sodium, calcium, titanium, and iron). The firing process of clay bricks is mainly the process of continuous dehydration and decomposition of kaolin to form mullite (3Al2O3·2SiO2) crystals. The SiO2 and Al2O3 in the clay brick form eutectic low-melting silicate with impurities during the firing process, which surrounds the mullite crystals.
    Clay bricks are weakly acidic refractory products, which can resist the erosion of acidic slag and acidic gas, and have a slightly weaker resistance to alkaline substances. Clay bricks have good thermal properties and are resistant to rapid cold and rapid heat.

Prformance:
The fire resistance of clay bricks is comparable to that of silica bricks, up to 1690~1730℃, but the softening temperature under load is more than 200℃ lower than that of silica bricks. In addition to the high refractory mullite crystals, the clay bricks also contain nearly half of the low melting point amorphous glass phase.
In the temperature range of 0~1000℃, the volume of clay brick expands evenly with the increase of temperature. The linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, which is only about half of that of silica brick. When the temperature reaches 1200 ℃ and then continue to rise, its volume will start to shrink from the maximum expansion. The residual shrinkage of clay bricks leads to the loosening of mortar joints in masonry, which is a major disadvantage of clay bricks. When the temperature exceeds 1200°C, the low melting point substances in the clay bricks gradually melt, and the particles are tightly pressed against each other due to surface tension, resulting in volume shrinkage.

Advantage:

1. Higher refractoriness,

2. High-temperature endurable.

3. Good corrosion resistance.

4. Good spalling resistance and wear resistance.

5. Good thermal shock resistance.

6. Higher mechanical strength.

7. High-temperature creep rate is low.

8. Good volume stability at high temperature.

Application:

- Reheating Furnace
- Blast furnace
- General Industrial Furnace etc.Blast Furnace,
- Coke Oven,Topedo Car,
- Cement Rotary kiln, Various Rotary kiln,
- Chemical Reactor, incinerator, Non Ferreous, metal Furnace,
- Glass furnace
 

Product Description:

Packaging and shipping

Standard packing: waterproof inner packing + outer packing suitable for container transportation