High-alumina artesian refractory castable
Classification:
Product Introduction
High alumina artesian refractory castables are high-performance amorphous refractories with the following properties and applications:
1. Good fluidity: high-alumina self-flowing refractory castable has high thixotropy, can rely on its own gravity flow and degassing, no need for vibrating equipment, and is convenient for construction.
2. Convenient construction: Compared with the traditional refractory castable, the high-alumina self-flowing refractory castable does not need to be rammed or hit the outer mold by steel brazing, which reduces the construction cost, reduces the labor intensity, and reduces noise pollution.
3. High refractoriness: The refractory degree of high-alumina artesian refractory castable is about 1500 degrees, and it has good thermal shock resistance.
4. Physical and chemical indexes: According to the physical and chemical indicators, high-alumina self-flowing refractory castables are divided into four grades: SF50, SF55, SF60 and SF65, of which the content of Al2O3 ≥ 50%, 55%, 60% and 65% respectively.
5. Physical properties: High alumina self-flowing refractory castables have high compressive strength and flexural strength at room temperature, as well as low heating permanent linear change rate.
6. Scope of application: High-alumina self-flowing refractory castables are widely used in ladle and tundish, blast furnace tap ditch and slag ditch, boiler tube protective layer and incinerator grate, heating furnace and cement kiln and other thermal equipment.
7. Economic benefits: Due to its simple construction, high-alumina self-flowing refractory castable has significant economic benefits when the lining is thin and difficult to construct or repair the lining and other thermal equipment.
8. Environmental protection and energy saving: Under the condition of using recycled material as aggregate, the performance of high-alumina self-flowing refractory castable products is equivalent to that of new material products, which can replace new material products, and has the effect of energy saving, high efficiency, green environmental protection and low cost.
9. Technological development: The high-alumina self-flowing refractory castables are innovative on the basis of low-cement series refractory castables and are developed on the basis of the principle of solid-state tightest packing and rheological theory.
10. Quality control: In the production process of high-alumina self-flowing refractory casable, there are strict requirements for the purity of raw materials, the selection of binders and construction methods to ensure product quality.
In summary, high-alumina self-flowing refractory castables have been widely used in high-temperature industrial fields due to their excellent physical properties, construction convenience and wide application range.
| Projects | Physical and chemical indicators | |||||
| SF50 | SF55 | SF60 | SF65 | |||
| Al2O3/% | ≥ | 50 | 55 | 60 | 65 | |
| Bulk density/(g/cm3) | ≥ | After baking at 110°C × 24h | 2.25 | 2.30 | 2.35 | 2.40 |
Compressive strength at room temperature /Mpa | ≥ | After baking at 110°C × 24h | 30 | 35 | 40 | 40 |
After baking at 1350°C × 24h | 50 | 55 | 60 | 65 | ||
Flexural strength at room temperature /Mpa | ≥ | After baking at 110°C × 24h | 5 | 6 | 6 | 6 |
After baking at 1350°C × 24h | 7 | 9 | 9 | 10 | ||
| Heating Permanent Line Change/% | After baking at 110°C × 24h | ±0.2 | ||||
After baking at 1350°C × 24h | ±0.5 | |||||
| Self-flow value/mm | 170~210 (artesian method); 200~220 (Table Jumping Method) | |||||
Key words:
High-alumina artesian refractory castable
Artesian refractory castable
Refractory castables
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