电弧炉炼钢可以分为以下4个阶段：装料，熔化，精炼和出钢。
The electric arc steelmaking process may be divided into the following four stages: charging, melting, refining and tapping.
石灰的熔化速度较缓慢(石灰活性度低时更差)，炉渣碱度的提高需要一个较长的过程，在低碱度阶段炉渣对炉衬的侵蚀较严重。
Lime melting speed is relatively slow (lime activated degree low worse), slag basicity improve need a longer process in lower alkalinity stage of furnace slag serious erosion.
石灰的熔化速度较缓慢(石灰活性度低时更差)，炉渣碱度的提高需要一个较长的过程，在低碱度阶段炉渣对炉衬的侵蚀较严重。
Lime melting speed is relatively slow (lime activated degree low worse), slag basicity improve need a longer process in lower alkalinity stage of furnace slag serious erosion.
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