By means of reforming furnace body and renewing tap-hole materials and brick shape,the problem of tap-hole burn-back in smelting process of medium carbon ferromanganese was resolved.

• 通过对精炼电炉炉体改造和出铁口材质、砖型的更新,解决了在中碳锰铁生产过程中炉跟易损问题,提高了炉龄,降低了生产成本。