The Microstructure Of Lime On The Impact Of The Mineralization Process

The steel industry is the basic industry of the national economy. With the rapid ofthe country’s economic development, the iron and steel industry is also developingrapidly. With the increasingly fierce competition in the steel market, steel qualityrequirements gradually strict. The development of new varieties, technology and rawmaterial is also put forward more stringent standards. Metallurgical lime is indispensablein the iron and steel production, the largest number of flux material consumption insintering and steel production, the quality of lime, is one of the important raw material forobtaining good quality of steel.Through the responses of different active lime （Calcined lime in different conditions）and iron minerals, determine the lowest mineralization temperature in the mineralizationprocess of iron minerals. If the mineralization temperature more lower, the mineralizationperformance will be better. Observed influence the microscopic structure of lime on themineralization process.Mineralization temperature is the beginning of the reaction temperature of ironmineral and lime. In practical tests, lowest mineralization temperature refers to thetemperature of generated the reactants that slightly larger than the iron minerals circle（approximately0.5～1mm） on the contact surface of the iron minerals and lime. Inreaction, the formation of the binder phase begins with CaO and Fe₂O₃solid-phasereaction, the final mineral composed of calcium ferrite-based.Experimental results show if the lime did not form the grain, its pores larger, longer,and communicating with each other, the activity of lime will be better. This lime will leadto the mineralization temperature of the iron minerals more lower, the mineralizationperformance will be better.