碳化硅浇注料是由优质碳化硅和工业硅粉制成的不定形耐火材料。它由耐火骨料、耐火粉末、粘结剂和其他添加剂制成。它是一种无需烧成的新型耐火材料。
| 碳化硅浇注料 | SICAST85 | SICAST80 | SICAST60 | |
|---|---|---|---|---|
| Al2O3、% | 9 | 9 | 20 | |
| SiC+C, % | 83 | 78 | 58 | |
| 体积密度，克/立方厘米 | 2.68 | 2.6 | 2.5 | |
| 铸造所需用水，% | 6 - 7 | 6 - 7 | 7 - 8 | |
| 二氧化碳浓度，千克/平方厘米 | 110℃x24h | 650(140) | 500(90) | 450(70) |
| 1000℃x3h | 850(150) | 600(150) | 550(100) | |
| 1350℃x3h | 1100(250) | 1000(250) | 1000(250) | |
| PLC, % | 110℃x24h | -0.06 | -0.06 | -0.06 |
| 1000℃x3h | -0.1 | -0.1 | -0.2 | |
| 1350℃x3h | -0.1 | -0.1 | -0.12 | |
| TC, kcal/mh℃ | 350℃ | 11.5 | 11 | 8 |
1. High thermal conductivity.
2. Excellent high temperature resistance.
3. Strong corrosion resistance.
4. Good mechanical strength.
Silicon carbide castables are applied in steel – making blast furnaces, non – ferrous metal smelting furnaces, and industrial kilns for ceramics and cement production to resist high – temperature and corrosive environments.