Study on the structure and reactivity of COREX coal

被引：11

作者：

Cui, Xin ^{[1
]}

Zhang, Xinxin ^{[1
]}

Yang, Mu ^{[2
]}

Feng, Yanhui ^{[1
]}

Gao, Hongyi ^{[2
]}

Luo, Wenbo ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2013年 / 113卷 / 02期

基金：

中国国家自然科学基金;

关键词：

COREX; Coal analysis; Organic oxygen functional groups; FT-IR; TG-DSC-MS; CARBOXYL GROUPS; FT-IR;

D O I：

10.1007/s10973-012-2782-8

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

COREX is the primary process in the current smelting reduction method. The process has strict coal quality standards. Combustion processes of coal used in the COREX operating system were analyzed using a synchronous thermogravimetric analyzer combined with a mass spectrometer. The microcosmic structure and macerals were observed by an electronic scanning microscope. The qualitative and quantitative determinations of oxygen functional groups, such as phenolic hydroxyl, carboxyl, carbonyl, and methoxy groups were detected by the Fourier Transform Infrared spectrometer (FT-IR) and through chemical analysis methods. In addition, the evolution of the chemical structure and transformation mechanism of organic oxygen functional groups during COREX coal combustion have been thoroughly investigated. This study proposes a new coal-requirement index system and coal blending method, which will increase the expansion of coal selection and decrease the overall usage of coal during COREX.

引用

页码：693 / 701

页数：9

共 29 条

[1]

[Anonymous], 2004, Advances in the Science of Victorian Brown Coal

[2]

Cao XR, 2008, IRON STEEL VANADIUM, V29, P6

[3]

Chen B. Q., 1998, IRON STEEL, V33, P10

[4]

Eberle A, 2003, IRON STEEL, V38, P68