论文部分内容阅读
由于高碳锰铁 Mn/C 比不合适.不宜作为生产哈德菲尔德(Hadfield)高锰钢之类的合金钢的合金剂。在其他一些应用上有这种情况.印电焊条涂料.也不需要高比例的碳。由过剩碳产生的问题可通过常规和非常规工艺对碳的母体源,即高碳硅锰进行脱碳来解决。常规方法中,硅作为还原剂。因此生产中、低碳锰铁包括两步:(1)生产 Si 15—20%的硅锰(2)富 MnO 渣与硅锰反应。非常规方法通过利用各种氧化剂,如蒸汽,二氧化硅和氧化铁进行 C 的选择性氧化。还尝试使用顶、底吹氧气精炼法。从这些工艺有关的缺点,即耐火材料消耗高、渣中与烟尘中的 Mn 损失来看,本研究力求寻找一种用二氧化碳或碳酸钙进行固态脱碳的简单方法。在脱碳期间,作为中间产物形成的 Mn_3O_4和 MnO 可以在惰性气氛下同碳化锰进一步反应。这样有助于产生一种精炼产品,当其同市场上可以获得到的低碳锰铁混合在一起的时候,可用于锰钢和锰合金的经济性生产。在工艺过程的动力学试验中,研究了温度对脱碳的影响.
Due to the unfavorable Mn / C ratio of high-carbon ferromanganese, it is not advisable as an alloying agent for the production of alloy steels such as Hadfield high manganese steels. In some other applications this is the case. There is no need for a high proportion of carbon. The problems caused by excess carbon can be solved by decarburization of the carbon parent source, high-carbon silicomanganese, by both conventional and non-conventional processes. In the conventional method, silicon is used as a reducing agent. Therefore, the production of low-carbon ferromanganese consists of two steps: (1) producing Si-Mn 20-20% Si (2) MnO-rich slag reacting with silicomanganese. Unconventional methods perform the selective oxidation of C by using various oxidants, such as steam, silica and iron oxide. Also try top and bottom blowing oxygen refining method. In view of the disadvantages associated with these processes, namely the high consumption of refractory materials and the loss of Mn in the slag and soot, this study sought to find a simple method for decarburization in the solid state with carbon dioxide or calcium carbonate. During decarburization, Mn_3O_4 and MnO, which are formed as intermediate products, may further react with manganese carbide under an inert atmosphere. This helps produce a refined product that can be used for economical production of manganese steel and manganese alloy when mixed with low-carbon ferromanganese that is available on the market. In the process of kinetic test, the effect of temperature on decarburization was studied.