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Kinetics of the Coupled Gas-Iron Reactions Involving Silicon and Carbon
Abstract
The kinetic study of coupled gas-iron reactions at 15600 has been carried out for the system involving liquid iron containing carbon and silicon and a gas phase consisting carbon monoxide, silicon monoxide and carbon dioxide. The coupled reactions are:
(1) 200(g) = CO2 + C
(2) SiO (g) + CO (g) = Si ¸ CO (g)
(3) SiO (g) + C = Si ¸ CO (g)
in which reaction (3) proceeds as written for high initial carbon contents but proceeds in the reverse direction for high initial silicon contents. The rate-limiting factors seem to be the surface chemical reactions, with rate of supply of silicon monoxide probably contributing.
