(1. Iron and Steel Research Institute, Ansteel Group Corporation, Anshan 114009, Liaoning ,China 2. Ansteel Group Corporation, Anshan 114021, Liaoning, China 3. Iron-making Plant,Ansteel Co., Ltd., Anshan 114021, Liaoning, China)
Abstract:In order to ensure appropriate[w(MgO)]of blast furnace slag, MgO-fluxed pellets are used to replace the MgO in sinter. A new type of pelletizing binder(new bentonite) and MgO flux were tested and their effects on the pelletizing process and metallurgical properties of pellets were investigated. The experimental results show that the drop strength of green pellets increases with addition of one kind of additives, and no cracking occurrs at 350 ℃.With the substitution of the new bentonite for the existing binder, the Fe grade of pellets increases slightly due to its lower[w(SiO2).]The RDI and RSI of MgO-fluxed pellets are also improved slightly. Finally, the softening temperature of the MgO-fluxed pellets increases, which can lower the cohesive zone and improve its movement smoothly and permeability of the blast furnace. Based on mass percent calculation, when[w(MgO)]in the sinter is 1.2%,the[w(MgO)]in pellets should be about 1.90% to keep the overall[w(MgO)]of the feed materials unchanged.
收稿日期: 2017-07-03
出版日期: 2018-04-09
引用本文:
周明顺,唐复平,赵东明,杨熙鹏,王俊山,李建军. 球团配加镁质熔剂及新型皂土试验[J]. , 2018, 53(4): 15-19.
ZHOU Ming-shun,TANG Fu-ping,ZHAO Dong-ming,YANG Xi-peng,WANG Jun-shan,LI Jian-jun. Investigation on MgO-flux and a new bentonite in pellets production. Iron and Steel, 2018, 53(4): 15-19.
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