Effect of Sulfur Compounds on the Decomposition of Carbon Monoxide on Red Mud

摘要

The utilizing of red mud via the carburization of its ferrous components by CO-containing gases of ferroalloy furnaces is investigated. As a result of our experiments, it is established that the red mud of alumina production and exhaust gases of ferroalloy furnaces are quite suitable for performing the decomposition reaction of carbon monoxide after the required preparation. It is found that the presence of hydrogen sulfide has a toxic effect on the catalytic abilities of iron oxides as catalysts of the thermal catalytic decomposition of CO. The mechanism behind the effect of sodium aluminum silicate hydrates entering the red mud on the degree to which sulfur compounds are removed from the ferroalloy gas is revealed. It is established that purification of the ferroalloy gas allows us to increase the carbon content in the final product by a factor of 5—10.