Kinetics of the Thermal Decomposition of Wangjiatan Siderite

被引：16

作者：

Feng Zhili ^{[1
]}

Yu Yongfu ^{[1
,2
,3
]}

Liu Genfan ^{[1
]}

Chen Wen ^{[2
,3
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan 430074, Peoples R China

[2] Wuhan Univ Technol, Sch Mat Sci & Technol, Wuhan 430070, Peoples R China

[3] Changsha Res Inst Min & Met, Changsha 410012, Hunan, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2011年 / 26卷 / 03期

关键词：

thermal decomposition; mechanism; kinetics; siderite; SAMPLES;

D O I：

10.1007/s11595-011-0261-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermal decomposition processes of Wangjiatan siderite samples were studied in nitrogen by thermogravimetric(TG) analysis. The mechanism of thermal decomposition of the siderite obeyed an kinetic law and the n-order was between 1.16 and 1.29. The results from non-isothermal experiments show that the size of particles has an obvious effect on the logarithm of pre-exponential factor in kinetics parameter of the thermal decomposition of Wangjiatan siderite. A linear relationship is shown between the size of particles and the logarithm of pre-exponential factor. An F(1) kinetic model containing size factor describes the thermal decomposition of Wangjiatan siderite well.

引用

页码：523 / 526

页数：4

共 7 条

[1] Kinetics of thermal decomposition of Hekimhan-Deveci siderite ore samples [J].

Alkac, Dilek ;

Atalay, Uemit .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2008, 87 (3-4) :120-128

[2] STUDIES IN THE THERMAL-DECOMPOSITION OF NATURAL SIDERITES IN THE PRESENCE OF AIR [J].

DHUPE, AP ;

GOKARN, AN .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1990, 28 (3-4) :209-220

[3]

[冯志力 FENG Zhi-li], 2009, [武汉理工大学学报, Journal of Wuhan University of Technology], V31, P11

[4] THERMOMAGNETOMETRY AND THERMAL-DECOMPOSITION OF SIDERITE [J].

GALLAGHER, PK ;

WARNE, SS .

THERMOCHIMICA ACTA, 1981, 43 (03) :253-267

[5] Comparative study of the kinetics of the thermal decomposition of synthetic and natural siderite samples [J].

Gotor, FJ ;

Macías, M ;

Ortega, A ;

Criado, JM .

PHYSICS AND CHEMISTRY OF MINERALS, 2000, 27 (07) :495-503

[6] KINETICS OF THERMAL-DECOMPOSITION OF SIDERITE - EFFECT OF PARTICLE-SIZE [J].

JAGTAP, SB ;

PANDE, AR ;

GOKARN, AN .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1992, 36 (1-2) :113-124

[7] THERMAL-DECOMPOSITION KINETICS OF SIDERITE [J].

ZAKHAROV, VY ;

ADONYI, Z .

THERMOCHIMICA ACTA, 1986, 102 :101-107

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