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Influence of a trace of gaseous sulfur on carburization rate to iron in CO-H2 mixtures

机译：微量气态硫对CO-H2混合物中渗碳速率的影响

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Toward protecting global environment and saving natural resources,recent author’s researches using a laboratory reactor proved that hydrogen half substitute to bosh gas on reaction behavior of sinter under a blast furnace simulated condition could enhance both reduction and carburization,and improve softening melting behavior and so on.In this work focusing the carburization,influence of a trace of gaseous sulfur on carburization rate to pure iron (13x10x0.5mm size) in CO-H2 mixtures was examined in the range of temperatures 920-1100 °C using a thermobalance.A trace of gaseous sulfur in the gas mixtures decreased the carburization rate drastically with increasing their contents.The initial rates were analyzed based on the chemisorption equilibrium of sulfur atoms on the surface of iron.The carburization was found to proceed to a small extent dependently on temperature and gas composition even under sulfur saturated condition.Overall the condition of hydrogen half substitute provided the rates twice as high as the condition without hydrogen independently of the existence of sulfur.The rates tended to increase mostly with increasing temperatures.The results were discussed relating to the reactions inside a blast furnace with or without hydrogen half substitute to a basic bosh gas.
机译：为了保护全球环境和节约自然资源，最近作者使用实验室反应器进行的研究证明，在高炉模拟条件下，氢半取代波什气体对烧结矿的反应行为有促进还原和渗碳的作用，并改善软化熔融行为等。在这项针对渗碳的工作中，使用热天平在920-1100°C的温度范围内研究了痕量气态硫对渗碳率对CO-H2混合物中纯铁（13x10x0.5mm尺寸）的影响。气体混合物中气态硫的含量随其含量的增加而急剧降低渗碳速率。基于铁表面硫原子的化学吸附平衡分析了初始速率，发现渗碳的程度在一定程度上取决于温度和温度。即使在硫饱和的条件下，气体成分也是如此。 e的发生率是不存在硫的情况下不存在氢的情况的两倍。随着温度的升高，发生率往往会增加。讨论了与高炉内部反应的结果，该反应在有或没有氢的情况下基本取代了碱性波高斯气体。

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