Refractoriness (℃): | 1580< Refractoriness< 1770 |
---|---|
Feature: | Long Time Materials |
Type: | Refractory Material |
Samples: |
---|
Customization: |
---|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
---|
Payment Method: | |
---|---|
Initial Payment Full Payment |
Currency: | US$ |
---|
Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
---|
Suppliers with verified business licenses
Item | RN-42 | RN-40 |
AL2O3%≥ | 42 | 40 |
Fe2O3% | 2.0 | 2.0 |
Apparent porosity% | 22 | 22 |
C.C.S Mpa ≥ | 35 | 30 |
Refractoriness ºC | 1760 | 1740 |
0.2Mpa R.U.L ºCT0.6ºC | 1410 | 1350 |
P.L.C % | 1400ºC*2h 0-0.4 | 1350ºC*2h 0-0.5 |
The refractoriness of clay bricks is similar to that of silicon bricks, up to 1690~1730 ° C, but the load softening temperature is more than 200 ° C lower than that of silicon bricks. Because in addition to containing high refractories of mullite crystals, clay bricks also contain nearly half of the low melting point amorphous glass phase.
In the temperature range of 0~1000ºC, the volume of clay brick expands evenly with the increase of temperature, and the linear expansion curve is approximately a straight line, and the linear expansion rate is 0.6%~0.7%, only about half of the silicon brick. When the temperature reaches 1200ºC and then continues to warm up, its volume will start to shrink from the maximum expansion. The residual shrinkage of clay bricks leads to the cracking of masonry joints, which is a major shortcoming of clay bricks. When the temperature exceeds 1200 ° C, the low melting point in the clay brick gradually melts, and the particles are very tight together due to the surface tension, resulting in volume contraction.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
Suppliers with verified business licenses