YUAN Zhangfu
,
PAN Yifang
,
ZHOU E
,
XU Cong
,
LI Shuqing
钢铁研究学报(英文版)
To fully utilize Panzhihua titanium resources, a new process was proposed. In the process, Panzhihua ilmenite concentrate was first reduced in a rotary hearth furnace (RHF) to produce a titaniumrich material and iron. The titaniumrich material was then used in a new chlorination process to produce TiCl4. The comparison of different groups of experimental results or calculation results showed that the utilization ratio of material was improved by using the titaniumrich material after pretreatment other than low level titanic ilmenite directly and the combined fluidized beds (FTF) were more likely to reduce bed height and reaction time than the single fluidized beds (Single F or Single T) under the condition of the same chlorination conversion ratio. Finally, the influence of reduction temperature and the antiagglomeration capacity of the combined fluidized bed was analyzed.
关键词:
ilmenite;rotary hearth furnace;fluidized bed;antiagglomeration
YUAN Zhangfu
,
YANG Xiao
,
LU Zhixing
,
HUANG Jiangning
,
PAN Yifang
,
MA Enxiang
钢铁研究学报(英文版)
A doubleparameter oxygen lance used in a 300 t converter was designed to improve the metallurgical performance. A smallscale measurement of the jet behavior was done using a computer controlled scanning system. The experimental data on the velocity distribution at the jet centerline, the contour map of the jet velocity, the deviation of the jet centerline, and the velocity distribution of the axial section were compiled. According to the results of the smallscale measurement, the doubleparameter lance was also employed for a BOF experiment. The metallurgy indexes show that the metallurgical performance was highly promoted by use of the doubleparameter lance.
关键词:
oxygen lance;jet behavior;BOF;metallurgical performance
ZHAO Hongxin
,
YUAN Zhangfu
,
WANG Wenjing
,
et al
钢铁研究学报(英文版)
Converter off gas, an important energy resource for steel enterprises is one of the weak points in the recovery and utilization of secondary energy resources. To improve the level of recycling converter off gas in steel plants, a novel approach to recycle CO2 separated from converter off gas or other off gas for the green slag splashing technique was developed, and the CO2 equilibrium conversion ratio of the green CO2 slag splashing in different technological conditions was calculated by HSC software. Furthermore, the experiments of CO2 injected into melting converter slag were carried out, and the influence factors of the green CO2 slag splashing technique were analyzed. The results showed that the carbon amount for smoothly CO2 slag splashing was about 4.0%.
关键词:
converter off gas;converter slag;slag splashing;CO2
