Effectof aluminum carbide additives on carbothermic reduction process from alumina to aluminum

Journal Title: Journal of New technology and Materials - Year 2018, Vol 8, Issue 2

Abstract

In terms of electricity consumption, the carbothermic reduction process of alumina (Al2O3) represents one of the promising candidates to overcome the current industrial Hall-Héroult process for the production of aluminum (Al) from Al2O3. The yield of the carbothermic reduction process of Al2O3, however, is not high enough to be considered as a substitute for the present industrial process. The calculation of the gas phase diagram of Al-O-C system suggests the possibility of the enhancement of the Al product yield by the increase of the ratio of the partial pressure Al2O/CO. An increase in the ratio of the partial pressure Al2O/CO can be expected by the reaction of aluminum carbide (Al4C3) and Al2O3. We investigated the effect of adding Al4C3 on the enhancement of the final Al yield in the production process. In the case without Al4C3 additive, the Al yield was only 1.4 %, while, in the case of adding Al4C3 additive with Al2O3: Al4C3 = 1:0.05 in molar ratio, the Al yield increased drastically up to 21.3 %.

Authors and Affiliations

Amina Chahtou, Rabie Benioub, Abderahmane Boucetta, Lihaowen Zenga, Hidekazu Kobatake

Keywords

Related Articles

Preparation and characterization of CIS thin films obtained by electrodeposition onto ITO and Mo substrates

In this study, thin films of copper and indium selenide (CuInSe2) were electrochemically deposited on ITO glass substrates and Mo films. A three electrodes system is used for in-situ monitoring of the deposition process...

Predicted theoretical efficiency fornew intermediate band solar cells (IBSC) based on GaAs1-xNx

Intermediate band solar cells are one type of third generation photovoltaic devices. Indeed, the increase in the power conversion efficiency is achieved through the absorption of low energy photons while preserving a lar...

The heterostructure ZnO/Al/SiO2/Si fabrication for Piezoelectric SAW and BAW Transducers and Sensors

Zinc oxide (ZnO) thin films were deposited by pulsed laser deposition technique for making ZnO/Al/SiO2/Si Bulk and Surface Acoustic Wave (BAW and SAW) transducers. The aim is to improve the piezoelectric properties of th...

High transparency of ZnO:In coated glass substrates

Undoped and heavily indium doped ZnO were deposited by dip-coating sol-gel method on glass substrates. When undoped ZnO was deposited the maximum value of transmittance decreases from 91% for bare substrate to less than...

Study of PVDF/PMMA blend resistance to artificial aging and neutral spray

The resistance of poly (vinylidene fluoride)/poly (methyl methacrylate) (PVDF/PMMA) blends was investigated using the artificial aging and neutral salt spray tests. The solution of each polymer was prepared using the N,...

Download PDF file
  • EP ID EP449655
  • DOI -
  • Views 38
  • Downloads 0

How To Cite

Amina Chahtou, Rabie Benioub, Abderahmane Boucetta, Lihaowen Zenga, Hidekazu Kobatake (2018). Effectof aluminum carbide additives on carbothermic reduction process from alumina to aluminum. Journal of New technology and Materials, 8(2), 77-82. https://europub.co.uk/articles/-A-449655