The reasons of CaSi furnace bottom rising are analysed, the operation procedure to prolong smelting CaSi period in1 MVA electric furnace and the remarkable results achieved are expounded.

• 对硅钙电炉炉底上涨原因进行了分析，并阐述了延长1MVA硅钙电炉生产周期的工艺操作方法及所取得的明显效果。