An ore smelting electricarefurnace with low-frequency electric power could save electric energy and electrode, and raising their production furthermore.
低频电源应用于矿热炉中，能提高产量，节约电能与电极。
2
Since the property requirements are so special, tool steel are usually melted in electricfurnace using careful metallurgical quality control.
由于需要的性质是如此特别，工具钢通常使用冶金质量控制的方法在电炉中熔化。
3
Principles of pyrogenic process, wet process and other methods are more fully described. The feasibility of the technology of comprehensively treating electric arc furnace dust is discussed.