Abstract：Based on the metallurgical thermodynamics, the coupling reaction of NH3 with ［O］,［S］ can improve the generation of active nitrogen atoms to be absorbed by liquid steel more easily than nitrogen molecules. At the same time,ammonia gas blowing can remove the oxygen and sulfur from liquid steel and decrease the inclusion content in the steel.For nitrogen alloying by blowing nitrogen under normal pressure, the liquid steel should be deoxidized and desulfurized because ［O］,［S］ as surface active elements are not favorable to nitrogen absorption. Experiments of melting high nitrogen steel (HNS) in tenkilogram inducton furnace indicated that,the nitrogen absorption effect of NH3 blowing is increase 18%~75% higher than that of N2 blowing. The process of melting HNS by blowing NH3 under normal pressure requires moderate content of ［O］,［S］ in molten metal.
季爱兵;储少军;马绍华;王玉刚;翟丹. 吹氨冶炼高氮钢的原理与实验[J]. 钢铁, 2007, 42(3): 22-0.
JI Aibing;CHU Shaojun;MA Shaohua;WANG Yugang;ZHAI Dan. Principle and Practice of Melting High Nitrogen Steel With Ammonia Gas Blowing. Iron and Steel, 2007, 42(3): 22-0.
2007, Vol. 42 
