Steelmaking with inert gas blowing
    1.
    发明授权
    Steelmaking with inert gas blowing 失效
    炼钢与惰性气体吹

    公开(公告)号:US3940263A

    公开(公告)日:1976-02-24

    申请号:US509223

    申请日:1974-09-25

    摘要: An oxygen steelmaking process utilizing also an inert gas to reduce the oxidation of a desired element such as chromium while permitting a desirably low carbon level to be reached, is characterized by recovery and recycling of the inert gas for economy. The inert gas is preferably argon and is preferably recovered by fractional distillation so as to reduce the nitrogen in the cycle stream and to recover and store and mix and reuse the argon and oxygen as desired. After removal of dust and carbon dioxide from the effluent gases from the converter, and prior to fractionation, 10-30% of the effluent gas is mixed with a minor part of the recovered oxygen and blown beneath the hood to limit air aspiration and to aid in the combustion of CO.

    摘要翻译: 使用惰性气体的氧炼钢工艺也可以减少期望的元素如铬的氧化,同时允许达到期望的低碳水平,其特征在于用于经济的惰性气体的回收和再循环。 惰性气体优选为氩气,优选通过分馏回收,以便减少循环流中的氮气,并根据需要回收并储存和再利用氩气和氧气。 在从转炉流出的废气中除去灰尘和二氧化碳后,在分馏之前,将10-30%的废气与一小部分回收的氧气混合并在发动机罩下方吹气,以限制空气抽吸,并帮助 在CO的燃烧中。