Investigation of the kinetics of reduction of manganese tungstate by hydrogen

被引：9

作者：

Bustnes, JA ^{[1
]}

Sichen, D ^{[1
]}

Seetharaman, S ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Met, SE-10044 Stockholm, Sweden

来源：

SCANDINAVIAN JOURNAL OF METALLURGY | 2000年 / 29卷 / 04期

关键词：

reduction; tungstate; kinetics; hydrogen;

D O I：

10.1034/j.1600-0692.2000.d01-18.x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The present work was carried out as a part of a research program studying the reduction kinetics of some transition metal tungstates. Manganese tungstate was reduced by hydrogen under isothermal conditions in the temperature range 883-1183 K. The reaction was round to take place in a single step with MnO and W as the solid products. The activation energy for the reduction of manganese tungstate was evaluated to be 92 kJ mol(-1) using the initial reaction rates. This activation energy was compared with the activation energies of the other transition metal tungstates in the light of bond strength of the metal-oxygen bonds. (C) Munksgaard, 2000.

引用

页码：151 / 155

页数：5

共 14 条

[1]

Arvanitidis I, 1996, SCAND J METALL, V25, P141

[2] APPLICATION OF A NONISOTHERMAL THERMOGRAVIMETRIC METHOD TO THE KINETIC-STUDY OF THE REDUCTION OF METALLIC OXIDES .2. A THEORETICAL TREATMENT OF POWDER BED REDUCTION AND ITS APPLICATION TO THE REDUCTION OF TUNGSTEN-OXIDE BY HYDROGEN [J].

BUSTNES, JA ;

SICHEN, D ;

SEETHARAMAN, S .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1993, 24 (03) :475-480

[3] KINETIC-STUDIES OF REDUCTION OF COO AND COWO4 BY HYDROGEN [J].

BUSTNES, JA ;

SICHEN, DU ;

SEETHARAMAN, S .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 1995, 26 (03) :547-552

[4] Kinetic studies of the reduction of FeO and FeWO4 by hydrogen [J].

Bustnes, JA .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 1997, 28 (04) :613-618

[5]

BUSTNES JA, 1999, SE100 ROYAL I TECHN

[6]

BUSTNESS JA, 1994, P EPD C TMS ANN M SA, P581

[7]

DU SC, 1992, METALL TRANS B, V23, P317

[8]

HANSEN M, 1958, CONSTITUTION BINARY, P962

[9]

Kapilashrami A, 1996, HIGH TEMP MATER PROC, V15, P73

[10]

KAPILASHRAMI A, 1998, SE100 ROYAL I TECHN

← 1 2 →