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日本中部钢板公司名古屋厂,一台200吨电弧炉,采用多个烧咀加速其熔化的办法,获得了增产节能的良好效果。此炉的变压器容量只有4000KVA,因此,生产效率受到限制。通过使用液化天然气和双烧咀辅助燃烧,烧咀的用数由原来的3个(煤油烧咀)增加到9个。其结果大大缩短了熔化时间,提高了生产效率。该炉平均出钢时间减少了18分钟。平均生产率从77t/h 增加到88t/h,提高了14%。电能消耗从原来的406KWh/t,下降到360KWh/t。经过130炉的生产试验,充
Nagoya Plant of Japan’s Central Plates Co., Ltd., a 200-ton EAF, uses multiple burners to speed up its melting and obtains good results of energy-saving and energy-saving. The furnace transformer capacity is only 4000KVA, therefore, the production efficiency is limited. By using liquefied natural gas and twin burners, the number of burners increased from three (kerosene burners) to nine. As a result, the melting time is greatly shortened and the production efficiency is improved. The furnace average tapping time reduced by 18 minutes. The average productivity increased from 77 t / h to 88 t / h, an increase of 14%. Power consumption from the original 406KWh / t, down to 360KWh / t. After 130 furnace production test, charge