LI Hongge
,
ZHANG Jianliang
,
PEI Yuandong
,
ZHAO Zhixing
,
MA Zejun
钢铁研究学报(英文版)
The whole melting curve of iron ore during sintering process was obtained, and the melting characteristics of iron ore were defined and explained. The whole melting process of mixture, mixed by iron ore and CaO reagent at basicity of 20 and 40, respectively, was observed using a SiC heating furnace with camcorder unit, and the melting curves of mixture that were relative height vs temperature curves were obtained. Besides, the melting characteristics of iron ore during sintering were introduced through defining some points in the melting curves, such as liquid forming temperature, inflexion temperature and flowing temperature, and the meaning of different shapes of the melting curves was clarified.
关键词:
iron ore
,
sintering
,
melting characteristic
,
melting curve
CAO Yong-guo
,
WU Sheng-li
,
HAN Hong-liang
,
WANG Hong-wei
,
XUE Fang
,
LIU Xiao-qin
钢铁研究学报(英文版)
Pilbara blending iron ore powder (PB powder) is blending ores with good and poor quality iron ores, so how to use PB power effectively is a problem. The self-characteristics of PB powder and its single-components were studied respectively, such as the macroscopic properties, microscopic properties, and high-temperature properties; the behavior and effect in the sintering were mastered. Then based on the new ore-proportioning idea of iron ores sintering characteristics complementary, the principles on the effective use of PB powder were discussed, and was further validated through the sintering pot test and industrial production. The results show that: PB powder is composed of three kinds of iron ore, and the sintering characteristics of different iron ores are obviously discrepant. With the ore-proportioning optimization based on the iron ores sintering characteristics complementary, the proportion of PB iron ore powder can be increased to more than 45%.
关键词:
Pilbara blending ore
,
sintering
,
mixed state
,
high effective utilization
