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我厂自2月份以来学习了大风高温提高冶炼强度和降低焦比双管齐下的操作方法后,高炉经常发生悬料现象。至3月11号更换热风阀
Since February, our factory has studied the operation method of windy high temperature raising smelting strength and reducing the coke ratio two-pronged operation, the blasting often hangs phenomenon. To hot air valve on March 11