LF/VD过程钢液氮含量控制试验研究  

Study on Control of Nitrogen Content in Liquid Steel in LF/VD

作　　者：王经民[1] 于小方[1] 李晶[2] 李京社[2] 唐国志[2] 傅杰[2] 

机构地区：[1]南京钢铁集团有限公司 [2]北京科技大学

出　　处：《炼钢》2003年第4期56-59,共4页Steelmaking

摘　　要：结合现场试验分析了LF/VD过程影响钢液氮含量的因素。结果表明:低氧、低硫钢液,在LF精炼钢液容易吸氮,而在VD有利于脱氮;LF过程喂线可使钢液增氮;真空度小于53.3Pa,保持时间大于10min,可生产出w(N)低于40×10^(-6)的钢液。Factors affecting the nitrogen content in liquid steel have been analyzed in LF/VD process. Results show that low oxygen and low sulphur liquid steel is apt to pick up nitrogen in a LF, whereas it's very beneficial to remove the nitrogen. For this reason feeding CaSi clad wire into the liquid steel will inevitably result in a nitrogen pick-up in LF refining. However, so long as vacuum is held up at 53.3 Pa for 10 minutes steel with less than 40 ppm nitrogen content can be produced.

关 键 词：炼钢 LF/VD 氮含量控制 试验研究 增氮 真空度 脱氮 

分 类 号：TF769[冶金工程—钢铁冶金]