For　the　cobalt　‐　bearing　copper　oxide　concentrate　from　Congo，experiment　of　coke　reduction　smelting　with　fayalite　slag　was　conducted.　The　effects　of　CaO‐to‐SiO2　mass　ratio，FeO　‐　to　‐　SiO2　mass　ratio　and　coke　rate　on　the　reduction　rates　of　copper　and　cobalt　were　investigated.　The　reduction　sequence　and　conditions　of　copper，cobalt，iron　and　silicon　oxides　were　analyzed　by　thermodynamics.　The　reduction　process　of　copper，cobalt　and　iron　oxides　was　quantitatively　analyzed　by　means　of　metal　oxide　reduction　thermodynamics　and　coke　gasification　kinetics.　The　results　show　that　the　reduction　of　copper，cobalt　and　iron　in　the　copper　oxide　concentrate　can　be　divided　into　the　competitive　fast　reduction　period　in　the　early　stage　and　the　slow　reduction　period　of　copper　and　cobalt　in　the　later　stage.　The　reduced　metal　iron　in　the　slow　reduction　period　will　undergo　reoxidation.　The　large　amount　of　competitive　iron　reduction　in　the　early　stage　and　its　reoxidation　in　the　later　stage　will　reduce　the　reduction　rate　of　copper，cobalt　and　iron　and　the　effective　utilization　rate　of　coke.　The　formation　mechanism　of　ferroalloy　layer　on　the　surface　of　crude　copper　is　revealed.　©　2024　Northeast　University.　All　rights　reserved.