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CONVERTER TOP BLOW REFINING METHOD HAVING EXCELLENT DECARBURIZATION CHARACTERISTICS AND TOP BLOW LANCE FOR CONVERTER
CONVERTER TOP BLOW REFINING METHOD HAVING EXCELLENT DECARBURIZATION CHARACTERISTICS AND TOP BLOW LANCE FOR CONVERTER
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机译：具有出色脱碳特性和转炉顶部吹气枪的转炉顶部细化方法
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摘要
In decarburization blow-off using at least one system lance with a gas supply line, the nozzle absolute secondary pressure Po of at least one lance is 0.7 to 2.5 times the absolute direct pressure absolute secondary pressure P op of the lance. As a refining method for changing the feed rate by changing the maximum value of the nozzle absolute secondary pressure to be 1.1 times or more the minimum value during the drilling of the system while maintaining the range, at least two or more of the lance tip opening when such decarburization drilling is performed. It has a concentric polygonal or concentric cross section in which up to four shields are arranged, and the ratio B / h of the length B (mm) of the long side of the individual opening separated from the shield and the height h (mm) of the short side is 10. 225, when the lance diameter is set to R (mm), the slit nozzle having a (B · h) / R of 0.4 to 4 mm and the concentric polygon or concentric connected to the gas supply pipe independent of the slit nozzle It utilizes sangchwi lance having 1 to 6 wonheong nozzle disposed inside.
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机译：在使用至少一个带有供气管线的系统喷枪进行脱碳吹气时，至少一个喷枪的喷嘴绝对次级压力Po是其绝对直接压力绝对次级压力P op 的0.7至2.5倍长矛。作为通过在系统的钻孔期间在保持范围的同时将喷嘴绝对二次压力的最大值改变为最小值的1.1倍或更大来改变进给速度的精炼方法，至少两个或多个喷枪头开口当进行这种脱碳钻探时。它具有同心的多边形或同心的横截面，其中最多布置四个屏蔽，并且与屏蔽分开的单个开口的长边的长度B（mm）与高度h（mm）的比值B / h短边的最大长度为10。225，当喷枪直径设置为R（mm）时，（B·h）/ R为0.4至4 mm的狭缝喷嘴，同心多边形或同心连接到供气管独立于狭缝喷嘴，它使用内部装有1至6根喷嘴的桑格威喷枪。
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