1. Main Characters:
a. high refractoriness under load. The refractoriness under load is higher than fireclay bricks and much higher of the refractoriness under load with more content of alumina.
b. Thermal shock resistance: The thermal shock resistance for the ordinary high alumina bricks are largely depends on the mineral composition and chemistry microstructure. High alumina bricks’ thermal shock resistance is worse than that of fireclay bricks.
c. Chemical erosion resistance: High alumina bricks have good resistance to acid, alkali slag, erosion of liquid metal. In addition, they has good performance of oxidation reduction reaction.
2. Applications: SK series high alumina bricks are widely used in metallurgy furnace and other various kinds of kilns.
3. Physical and Chemical Index:
Item |
SK36 |
SK38 |
SK40 |
Al2O3 (%) |
48--55 |
65-75 |
80 |
Fe2O3 (%) |
2.0 |
2.0 |
2.0 |
Compressive Strength (MPa) |
39.2 |
49 |
75 |
Refractoriness℃ |
1750 |
1790 |
1790 |
Apparent Porosity （%） |
22 |
23 |
21 |
Bulk Density (g/cm3) |
2.25 |
2.4-2.6 |
2.65 |
Reheat line change (%) |
(1500 ℃,2h, )
+0.1— -0.4 |
(1500 ℃,2h, )
+0.1— -0.4 |
(1500℃,2h, )
+0.2
-0.4 |
Refractoriness under load (0.2MP)℃ |
1420 |
1500 |
1530 |
SK36 brick packing
Bricks are packed on wooden pallet and then polyethylene film is placed over it, finally the package is tied up with steel strips.
SK36 brick order quantity
20 t as minimum quantity is accepted.
SK36 brick delivery time
The production capacity reach to 5000 t per month and the delivery will be made within 40 days after contract being effective.
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