
Features
1. High volume stability.
2. High compactness.
3. Strong resistance to erosion.
This product uses high-quality high-alumina, corundum and spinel, fused and high purity magnesite as the main raw materials, add a variety of different binding agents and special properties of the fine powder materials, such as by the fine ratio and mixing made.
Aluminum-magnesia ramming material, high-alumina (or corundum) – silicon carbide – carbon ramming material, alkali refractory ramming material and zirconium mullite ramming material.
Applicable to all kinds of carbon steel, low manganese steel, alloy steel, alloy cast iron, high-speed tool steel and stainless steel.
Items | HDD-1 | HDD-2 | HDD-3 | HDD-4 | HDD-5 | ||||
Chemical composition(%) | AI203≤ | 95 | 96 | 96 | 97 | 90 | |||
Si02≥ | 0.7 | 0.6 | 0.6 | 0.5 | 0.4 | ||||
Fe203≤ | 0.5 | 0.5 | 0.4 | 0.4 | 0.8 | ||||
Cold Crushing Strength (Mpa) | 1300℃x3h After firing at | 15 | 15 | 10 | 10 | 25 | |||
Apparent porosity(%) | 1300℃x3h After firing at | 26 | 26 | 25 | 25 | 23 | |||
Linear changing after burnt(%) | 1300℃x3h After firing at | 0 -1.6 | 0-1.2 | 0 -1.0 | |||||
Bulk density (g/cm3) | 1300℃x3h After firing at | 2 | 2 | 2.1 | 2.1 | 2.2 | |||
(℃)Refractoriness | 1780 | 1780 | 1780 | 1780 | — | ||||
Max. grain size of aggregate(mm) | 5 | 4.5 | 4.5 | 4.2 | 4.2 | ||||
Amount for construction | 2300 | 2300 | 2300 | 2400 | 2400 | ||||
Mathod of construction | Jolt or ramming |
Zhengzhou Rongsheng Refractory Co., Ltd.
Our company can provide not only the domestic and foreign customers excellent quality of high-temperature thermal insulation material, but also the first-rate service including professional furnace lining design, installation supervision, engineering construction etc.
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