Production of Primary Magnesium by the Aluminothermic Reduction of Magnesia Extracted from Dolomite Ore

Peng Deng; Yu Qin Liu; Wen Gui Yao; Hong Wen Ma

doi:10.4028/www.scientific.net/MSF.788.28

Paper Titles

Study of Ca and Ce Additions on Different Ignition Resistance Behavior of Magnesium Alloy
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Process and Property of Superplastic Mould Forged AZ80 Wheel Hub
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Influence of Various Precipitate Phases on Tensile Properties of an Extruded Mg-Y-Nd Alloy
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Microstructure, Texture and Mechanical Properties of Mg-2.0Zn-0.3Gd Alloy Sheets Fabricated by Large Strain Hot Rolling
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Production of Primary Magnesium by the Aluminothermic Reduction of Magnesia Extracted from Dolomite Ore
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Effect of Nd and Dy Addition on AZ91D Ignition Temperature and Microhardness
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Influence of Various Heat Treatment on Corrosion Resistance of As-Extruded Mg-9Li-3Al-2.5Sr Alloys
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Hot Deformation Behavior of As-Cast Mg-9Gd-2.5Y-Nd-0.5Zr Mg Alloy
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Purification of Magnesium by Vacuum Distillation and its Analysis
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HomeMaterials Science ForumMaterials Science Forum Vol. 788Production of Primary Magnesium by the...

Production of Primary Magnesium by the Aluminothermic Reduction of Magnesia Extracted from Dolomite Ore

Abstract:

In this paper, a new process for the production of the primary magnesium is introduced using the dolomite as the raw material. The magnesia and calcium carbonate were prepared from dolomite by acidification. The content of magnesium oxide can reach 98.92% about the magnesia obtained. The magnesia is used to produce primary magnesium by aluminothermic reduction under vacuum condition. The reduction ratio of MgO can be up to 86.14% under the temperature of 1200°C for 5hrs, briquetting pressure of 10MPa and the molar ratio of MgO to Al of 3:2. The content of magnesium is more than 99.90%. The major phases in the briquette residue are corundum and spinel, which can be used as refractory.

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Periodical:

Materials Science Forum (Volume 788)

Pages:

28-33

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.788.28

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Online since:

April 2014

Authors:

Peng Deng, Yu Qin Liu*, Wen Gui Yao, Hong Wen Ma

Keywords:

Aluminothermic Reduction, Dolomite, Magnesia, Primary Magnesium

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References

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