Authors: Aydin, Süheyla; Dikeç, Feridun

Source: Canadian Metallurgical Quarterly, Number 3, July-September 1990 , pp. 213-216(4)

Publisher: Maney Publishing

Abstract:

In the present work, the removal of alkalis (Na, K) by the chloride volatilization process with calcium chloride addition was investigated for “Divrigi A. Block, Turkey” iron ores. The variables were the amounts of CaCl₂, the temperature of the environment and the basicity of the sample. At the temperature of l230°C, it was found that the amount of K₂O was reduced from 0.75% to 0.072% and Na₂O from 0.15% to 0.058% for pellets which were prepared with 5.0% CaCl₂ addition to concentrate. The increase in basicity by calcium carbonate addition was found to have a positive effect on alkali removal. At the temperature of 1230°C, for pellets which were prepared with 3.0% CaCl₂ and a basicity ratio of 1.0, the residual K₂O and Na₂O were found to be 0.062% and 0.038% respectively.

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/000844390795576030

Publication date: 1990-07-01

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