Reduction of Alumina in CaO-Al<SUB>2</SUB>O<SUB>3</SUB> Binary Slag by Carbon Saturated Iron.

DOI Web Site Web Site

Bibliographic Information

Other Title
  • 炭素飽和溶鉄によるCaO-Al<SUB>2</SUB>O<SUB>3</SUB> 2元系スラグのアルミナ還元速度
  • 炭素飽和溶鉄によるCaO-Al2O32元系スラグのアルミナ還元速度
  • タンソ ホウワ ヨウテツ ニヨル CaO Al2O3 2ゲンケイ スラグ ノ

Search this article

Description

In this study, the reduction of alumina in CaO-Al2O3 binary slag by carbon saturated iron was investigated under various experimental conditions.<BR>The reduction rate of alumina was represented by a zeroth order reaction and its activation energy was 619 kJ/mol for 50 wt.%CaO-50 wt.%Al2O3 slag. The rate of reduction increased linearly with the activity of AlO1.5 in slag and with the ratio of slag-graphite to slag-metal interfacial areas. The reduction rate of alumina was accelerated by the addition of silicon to metal. Furthermore, the reduction rate of alumina in CO atmosphere was about one-tenth that in Ar atmosphere.<BR>It is supposed that the reduction rate of alumina is controlled by the cathodic reaction (Al3++3e=Al) involving the break-down of Al-O bonds in slag.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top