Carbothermic Reduction of MoO3 for Direct Alloying Process

2013 ◽  
Vol 20 (10) ◽  
pp. 51-56 ◽  
Author(s):  
Hang-yu Zhu ◽  
Zheng-bang Li ◽  
Hai-sen Yang ◽  
Lin-gen Luo
Keyword(s):  
Carbothermic Reduction ◽  
Direct Alloying

Thermodynamic and Experimental Analyses of the Carbothermic Reduction of Tungsten Slag

JOM ◽  
2021 ◽  
Author(s):  
Chunfa Liao ◽  
Sui Xie ◽  
Xu Wang ◽  
Baojun Zhao ◽  
Boqing Cai ◽  
...  
Keyword(s):  
Carbothermic Reduction ◽  
Experimental Analyses

scholarly journals Carbothermic Reduction and Nitridation Mechanism of Vanadium-Bearing Titanomagnetite Concentrate

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 730
Author(s):  
Wen Yu ◽  
Xiaojin Wen ◽  
Wei Liu ◽  
Jiangan Chen
Keyword(s):  
Phase Transformation ◽  
Carbothermic Reduction ◽  
Titanium Oxides ◽  
Distribution Characteristic ◽  
Reaction Behavior ◽  
Microstructure Transformation ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Roasting Process ◽  
Rate Limiting

In this study, the carbothermic reduction and nitridation mechanism of vanadium-bearing titanomagnetite concentrate are investigated in terms of phase transformation, microstructure transformation, and thermodynamic analyses. The differences in the reaction behavior of titanomagnetite and ilmenite in vanadium-bearing titanomagnetite concentrate, as well as the distribution characteristic of V in the roasted products, are emphatically studied. It is observed that the reaction sequences of titanomagnetite and ilmenite transformations into nitride are as follows: Fe3−xTixO4→Fe2TiO4→FeTiO3→M3O5→(Ti, V)(N, C); FeTiO3→M3O5→Ti(N, C). The reduction of M3O5 to TiN is the rate-limiting step of the entire reaction, and metal iron is an important medium for transferring C for the reduction of M3O5. Titanomagnetite is faster to convert into nitride than ilmenite is, and the reasons for this are discussed in detail. During the entire roasting process, V mainly coexists with Ti and seems to facilitate the conversion of titanium oxides into (Ti, V)(N, C).

Plasma Carbothermic Reduction of Rare-Earth Metals

2018 ◽  
Vol 2018 (6) ◽  
pp. 507-512
Author(s):  
V. S. Cherednichenko ◽  
A. S. An’shakov ◽  
V. A. Serikov ◽  
V. A. Faleev
Keyword(s):  
Rare Earth ◽  
Carbothermic Reduction ◽  
Rare Earth Metals

Carbothermic reduction kinetics of nanocrystallite Fe2O3/NiO composites for the production of Fe/Ni alloy

2008 ◽  
Vol 463 (1-2) ◽  
pp. 585-590 ◽  
Author(s):  
K.S. Abdel-Halim ◽  
M.H. Khedr ◽  
M.I. Nasr ◽  
M.Sh. Abdel-wahab
Keyword(s):  
Carbothermic Reduction ◽  
Reduction Kinetics ◽  
Ni Alloy ◽  
Kinetics Of

Kinetic Research of Boron Oxide Reducing Reaction at Low Temperature

2012 ◽  
Vol 512-515 ◽  
pp. 2372-2375 ◽  
Author(s):  
Ding Guo Zhao ◽  
Shu Huan Wang ◽  
Xiao Jie Cui ◽  
Jian Long Guo
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Boron Oxide ◽  
Reduction Rate ◽  
Order Reaction ◽  
Boron Steel ◽  
Second Order Reaction ◽  
Solid Reaction ◽  
Carbon Tube ◽  
Direct Alloying

The reducing process of boron-containing slag at low temperature is an important stage of the direct alloying for smelting boron steel. At low temperature boron slag generates mainly solid - solid reaction in the sintering period. The experiments were done on the carbon tube furnace in laboratory, and the effect of slag reaction in different times at 1200°C was researched. The samples were analyzed by XRD after the reaction. The experimental results shown that the reduction rate increased by increasing reducing time. The chemical reducing reaction of boron oxide by ferrosilicon is second-order reaction at solid state.

Slag Activation in the Carbothermic Reduction of Phosphorite with Adding Micronutrient-Bearing Cosolvents

JOM ◽  
2021 ◽  
Author(s):  
Hongquan Jing ◽  
Cuihong Hou ◽  
Haobin Wang ◽  
Yuan Yao ◽  
Bingbing Liu
Keyword(s):  
Carbothermic Reduction
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