The Removal of Alkalis From Iron Ores by Chloride Volatilization
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
Publication date: 1990-07-01