论文部分内容阅读
高碳铬铁无渣脱碳法可避免有毒铬渣的排放,利用微波场可快速加热粉状物料的特性,在高碳铬铁粉中配加一定比例的碳酸钙粉,可实现高碳铬铁粉快速固相脱碳.实验结果表明:配加一定比例的碳酸钙粉,不会影响内配碳酸钙高碳铬铁粉混合物料的微波加热特性;提高混合物料的脱碳摩尔比、微波加热温度和保温时间,有利于高碳铬铁粉的深度脱碳,但相应加剧脱碳铬铁粉的氧化程度.合适的固相脱碳条件为:脱碳摩尔比1∶1.0~1∶1.4,微波加热温度1100℃,保温脱碳时间60 min.在上述条件下可使碳质量分数为8.16%的高碳铬铁粉脱碳至3.91%~1.71%,脱碳率为52.08%~79.04%.
High-carbon ferrochrome slagless decarburization method to avoid the emission of toxic chromium slag, the use of microwave field can quickly heat the characteristics of the powdery material, high-carbon ferrochrome powder with a certain proportion of calcium carbonate powder, high carbon chromium Iron powder rapid solid phase decarburization.The experimental results show that adding a certain proportion of calcium carbonate powder will not affect the microwave heating characteristics of the mixed material with calcium carbonated high-carbon ferrochromium powder; increasing the decarburization molar ratio of the mixed material, microwave The heating temperature and holding time are favorable for the deep decarbonization of high carbon ferrochrome powder, but the oxidation degree of decarburization ferrochrome powder is correspondingly increased.The suitable solid phase decarburization conditions are as follows: decarburization molar ratio 1: 1.0 ~ 1: 1.4 , The microwave heating temperature is 1100 ℃ and the decarburization holding time is 60 min.The high carbon ferrochrome with the carbon content of 8.16% can be decarbonized to 3.91% ~ 1.71% and the carbon removal rate is 52.08% ~ 79.04% under the above conditions, .