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process for the production of steel with basic process and blowing oxygen from the bottom of the
process for the production of steel with basic process and blowing oxygen from the bottom of the
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机译:用基本工艺生产钢的工艺,并从炉底吹氧气
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摘要
This process is for mfg. steel with a pre-determined low H2 content in a bottom-blown basic oxygen converter by (a) blowing O2 surrounded by a protective hydrocarbon gas through one or more jets below the surface of the melt to lower the carbon content; (b) then blowing a hydrogen-free gas through the jets so the final H2 content Hf (ppm) is where H1 is the initial H2 content; V = vol. of the hydrogen free gas (s.c.f.); W = bath wt. (lbs); and K1 is the ratio of the mol. wt. of H2 x 106 to the product from 1 mole. gas under standard calibration conditions. The final steel pref. contains more than 0.1% C and one pref. method is to blow Ar through the melt for 2 secs. to 3 mins. to reduce the hydrogen, oxygen and nitrogen contents of the steel; other pref. methods are claimed. Mfr. of steel with low hydrogen content and/or low O2 and/or low N2, esp. carbon steel.
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机译:此过程适用于制造。通过以下方式在底吹式碱性氧气转化器中具有低H2含量的钢:(a)通过熔体表面下方的一个或多个射流吹送被保护性烃气体包围的O2,以降低碳含量; (b)然后将无氢气体吹过喷嘴,使最终的H2含量Hf(ppm)为H1为初始H2含量; V =体积无氢气体(s.c.f.); W =镀液重量(磅); K1为摩尔比。重量H2 x 106到1摩尔的产物。气体在标准校准条件下。最终的钢偏好。包含超过0.1%的C和一种偏好。方法是将Ar吹入熔体2秒钟。到3分钟减少钢中的氢,氧和氮含量;其他偏好要求保护的方法。制造商低氢含量和/或低氧和/或低氮的钢,特别是碳素钢。
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