Abstract: In one aspect, there is provided a process for converting gaseous carbon dioxide, comprising: emplacing a reaction zone material, including gaseous carbon dioxide, gaseous carbon monoxide, and an operative reagent, within a reaction zone, such that gaseous carbon dioxide, gaseous carbon monoxide, and an operative reagent are disposed within the reaction zone, with effect that a reactive process is effected, such that a product material is produced; wherein: the ratio of total number of moles of gaseous carbon dioxide, disposed within the reaction zone material, to total number of moles of gaseous carbon monoxide, disposed within the reaction zone material, is at least 1:4; the operative reagent is at least one of metallic iron, metallic nickel, and metallic magnesium; and the product material includes solid carbon-comprising material.

Abstract: In one aspect, there is provided a process for converting gaseous carbon dioxide, comprising: emplacing a reaction zone material, including gaseous carbon dioxide, gaseous carbon monoxide, and an operative reagent, within a reaction zone, such that gaseous carbon dioxide, gaseous carbon monoxide, and an operative reagent are disposed within the reaction zone, with effect that a reactive process is effected, such that a product material is produced; wherein: the ratio of total number of moles of gaseous carbon dioxide, disposed within the reaction zone material, to total number of moles of gaseous carbon monoxide, disposed within the reaction zone material, is at least 1:4; the operative reagent is at least one of metallic iron, metallic nickel, and metallic magnesium; and the product material includes solid carbon-comprising material.

Abstract: There is provided a process of treating a metalliferrous material including at least one metal material fraction. Each one of the at least one metal material fraction includes a respective metal, wherein the respective metal is a transition metal. Each one of the at least one metal material fraction also includes a respective first operative material fraction and a respective second operative material fraction. The respective first operative material fraction consists of an elemental form of the respective metal, and the respective second operative material fraction consists of at least one oxide of the respective metal. The method includes providing reagent material including at least one diatomic halogen and at least one aluminium halide. The reagent material is contacted with the metalliferrous material in a reaction zone so as to effect a reactive process which effects production of an intermediate reaction product including at least one produced metal halide.