Emission Characteristics of SO2 During Roasting of Iron Ore Pellets

被引：0

作者：

Xu, Rongguang ^{[1
,2
]}

Tian, Yunqing ^{[1
,2
]}

Sun, Dawei ^{[3
]}

Qian, Ruiqing ^{[3
]}

Dong, Xiangjuan ^{[3
]}

Liu, Wenwang ^{[3
]}

Ma, Chengwei ^{[3
]}

Wu, Xiaojiang ^{[3
]}

Zhao, Luyao ^{[1
,2
]}

Yang, Tao ^{[1
,2
]}

Ma, Li ^{[1
,2
]}

机构：

[1] Beijing Key Lab Green Recyclable Proc Iron & Stee, Beijing 100043, Peoples R China

[2] Shougang Grp Co Ltd, Res Inst Technol, Beijing 100043, Peoples R China

[3] Shougang Jingtang United Iron & Steel Co Ltd, Tangshan 063200, Hebei, Peoples R China

来源：

CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2024 | 2024年

关键词：

Iron ore pellet; SO2; Roasting; Baking cup experiment; Travelling grate machine;

D O I：

10.1007/978-3-031-50304-7_17

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Baking cup experiments were carried out and emission characteristics of SO2 during roasting of iron ore pellets were investigated. Concentration of SO2 starts to increase when the temperature is about 800 degrees C, then reaches a peak when the temperature is just above 900 degrees C. Furthermore, emission characteristics of SO2 during roasting of iron ore pellets in travelling grate machine were investigated. There are two peaks of concentration of SO2, and the lower peak is in downdraft drying section, while the higher peak is in roasting section. Concentration of SO2 is at a low level in preheat section, then begins to increase in roasting section, and reaches peak value in Number 11 wind boxes. Sulfur content in acid pellets is about only one fifth of that in alkaline ones, which might relate to calcium in iron ore pellets. Except for chemical compositions, temperature is another important factor for sulfur content in iron ore pellets. Sulfur in iron ore pellets made from roasting test was analyzed by XPS, and results show that there is mainly sulfate.

引用

页码：181 / 189

页数：9

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