METHOD FOR PRETREATING SINTER ORE

摘要

PURPOSE: A pretreatment method of sinter ore is provided to remarkably reduce a low-temperature reduction degradation phenomenon of sinter ore by coating acryl amide based compound on a surface of sinter ore. CONSTITUTION: Acryl amide polymer is dissolved in water, thereby obtaining an aqueous solution having predetermined density. Then, the aqueous solution is sprayed onto a surface of sinter ore in such a manner that a coating layer is formed on the surface of sinter ore. The coating layer prevents CO gas from directly making contact with sinter ore, thereby reducing a low-temperature reduction degradation phenomenon of sinter ore. If molecular weight of acryl amide polymer is 10000x10¬3 to 12000x10¬3, density of the aqueous solution is about 0.1 to 0.3%.