| 摘要 |
PROBLEM TO BE SOLVED: To provide a siphon unit enabling continuous operation for a long period, improving operation rate of a furnace and increasing productivity.SOLUTION: This siphon unit 7 for holding hot metal and slag is installed at a taphole 6 of a vertical furnace 1 for melting iron scraps using coke, which is constructed with magnesium/chromium-based refractory. The composition of the magnesium/chromium-based refractory comprises 50-70 mass% of MgO content and 18-35 mass% of CrOcontent. The magnesium/chromium-based refractory is magnesium/chromium-based brick and/or magnesium/chromium-based castable refractory. |
