|
|
|
| Development of dedusting ashbased dephosphorizer |
| SUN Guobin1,XIANG Xiaodong1,DENG Aijun2,LI Canhua2,WANG Zhaoran2 |
(1. College of Resource and Environmental Engineering， Wuhan University of Science and Technology,
Wuhan 430081, Hubei， China;2. College of Metallurgical Engineering， Anhui University of Technology,
Ma′anshan 243002, Anhui， China) |
|
|
|
|
Abstract In order to realize the resource utilization of dusting ash and the effective predephosphorization of hot metal, it is of practical significance to try to prepare the hot metal dephosphorizer by using the converter secondary dedusting ash. The dephosphorization test was carried out by replacing the active ingredients in the pure dephosphorizer by different ratios of the converter secondary dedusting ash from two steel companies to find the best dusting ash replacement ratio. The test results show that the maximum dephosphorization rate of the two dephosphorizers is 52% and 30% respectively after using the dedusting ashbased dephosphorizers, the P2O5 activity coefficient in the dephosphorization final slag is significantly reduced, and the final slag phosphorus capacity is significantly increased. However, the phosphorus distribution ratio is relatively low. In addition, the dusting ashbased dephosphorizer also has a high desiliconization and desulfurization effect, and the maximum removal rate were over 95%, which indicates that this dephosphorizer can simultaneously realize the pretreatment of the hot metal "three off" operation, and it provides a new way for the secondary utilization of dusting ash.
|
|
|
|
|
|
| [1] |
ZHANG Jian-liang, SUN Min-min, LI Ke-jiang, LI Hong-tao. Present situation and prospect of dissolution behavior of metallurgical coke in blast furnace hot metal[J]. Iron and Steel, 2020, 55(4): 1-11. |
| [2] |
YANG Li-bin, ZENG Jia-qing, DENG Yong, XU Xiao-wei, WU Li-ping. Highly efficiency and long-life combined blowing technology of big converter[J]. Iron and Steel, 2020, 55(4): 45-52. |
| [3] |
ZHANG Wei-li1,WU Sheng-li1,HU Zhong-jie1,2. Statistical analysis of factors affecting desulfurization rate of activated coke for sintering flue gas[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 281-288. |
| [4] |
LI Si-jun， DU Jin-ke， PENG Yong-xiang， LI Ping， HU Bin. Numerical simulation study on single-point unequilibrium casting for beam blank in Laiwu Iron and Steel Company[J]. CONTINUOUS CASTING, 2020, 45(3): 1-9. |
| [5] |
ZHENG Yuan-shou. High speed production technology of 160 mm× 160 mm continuous casting in Sangang[J]. CONTINUOUS CASTING, 2020, 45(3): 10-13. |
| [6] |
ZHAO Dong,ZHANG Jing,LUO Guo-ping,CHEN Yan-biao,ZHANG Xiang. Effect of SiO2 and Na2CO3 addition on gasification dephosphorization during prereduction and sintering of iron concentrate[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(3): 204-211. |
|
|
|
|
