Abstract
The effect of use of preheated air suction and pseudo-particle mix made from raw materials on the sintering behavior and properties of the self-fluxing sinter was studied.
The results obtained are as follows :
1) The exchange to cool air during the process of sintering in preheated air suction technique was very beneficial in decreasing the amount of coke, lowering sintering temperature and decreasing FeO content in sinter.
2) The coating of flux fines on coarse ores in the use of sinter mix decreased the sintering time, and further decreased FeO content in sinter.
3) The combined use of the preheated air suction which included the cool air exchange at the middle of sintering and the pseudo-particled sinter mix for sintering decreased sintering temperature, FeO, magnetite and skeletal hematite content, and increased acicular and fine acicular calcium ferrite content in sinter. As a results, the degradation of sinter was obviously improved, and good strength and reducibility were simultaneously maintained.
