Abstract: The invention concerns a recycling process for recovery of metals from Li-ion batteries. More particularly, an autogeneous process is disclosed for the recovery of Co from Li-ion batteries also containing Al and C, comprising the steps of: —providing a bath furnace equipped with means for 02 injection; —providing a metallurgical charge comprising CaO as a slag former, and Li-ion batteries; —feeding said metallurgical charge to the furnace while injecting O2, whereby at least part of the Co is reduced and collected in a metallic phase; —separating the slag from the metallic phase by tapping; characterized in that the fraction of Li-ion batteries, expressed as weight % of the metallurgical charge, is at least equal to 153%?3.5 (Al %+0.6 C %), Al % and C % being the weight % of Al and C in the batteries, thereby enabling to operate the smelt reduction process in autogeneous conditions.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process comprises the steps of:—subjecting the residue to a flash or agitated bath fuming step, thereby producing an Fe bearing slag and Zn- and Pb-bearing fumes; and—extracting the Zn- and Pb-bearing fumes and valorizing Zn and Pb; characterized in that CaO, SiO2 and MgO are added as a flux before or during the fuming step so as to obtain a final slag composition with: formula (I) all concentrations being expressed in wt %. The invention also relates to a single-chamber reactor for Zn-fuming equipped with one or more submerged plasma torches as heat and gas sources. [ Fe ] [ SiO 2 ] + [ CaO ] [ SiO 2 ] + [ Mg ? O ] 3 > 3.5 ; ? ? 0.1 < [ CaO ] [ SiO 2 ] < 1.

Abstract: The invention concerns a recycling process for recovery of metals from Li-ion batteries. More particularly, an autogeneous process is disclosed for the recovery of Co from Li-ion batteries also containing Al and C, comprising the steps of: —providing a bath furnace equipped with means for O2 injection; —providing a metallurgical charge comprising CaO as a slag former, and Li-ion batteries; —feeding said metallurgical charge to the furnace while injecting O2, whereby at least part of the Co is reduced and collected in a metallic phase; —separating the slag from the metallic phase by tapping; characterized in that the fraction of Li-ion batteries, expressed as weight % of the metallurgical charge, is at least equal to 153%?3.5 (Al %+0.6 C %), Al % and C % being the weight % of Al and C in the batteries, thereby enabling to operate the smelt reduction process in autogeneous conditions.

Abstract: This invention relates to a single-step pyrometallurgical process for the recovery of non-ferrous metals from zinc bearing residues, in particular from by-products of the zinc and lead industry such as goethite and jarosite. A process for the recovery of metals from industrial Zn residues containing Zn, Fe and S is defined, wherein Zn is fumed, Fe is slagged, and S is oxidized to SO2, characterized in that the Zn fuming, the Fe slagging, and the S oxidation are performed in a single step process, by smelting the residues in a furnace comprising at least one submerged plasma torch generating an oxidizing gas mixture, and by feeding a solid reducing agent to the melt. The process achieves the oxidation of S and the slagging of Fe, while simultaneously achieving the reduction and the fuming of metals such as Zn.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process comprises the steps of: subjecting the residue to a flash or agitated bath fuming step, thereby producing an Fe bearing slag and Zn- and Pb-bearing fumes; and extracting the Zn- and Pb-bearing fumes and valorising Zn and Pb; characterised in that CaO, SiO2 and MgO are added as a flux before or during the fuming step so as to obtain a final slag composition with: formula (I) all concentrations being expressed in wt %. The invention also relates to a single-chamber reactor for Zn-fuming equipped with one or more submerged plasma torches as heat and gas sources. [ Fe ] [ SiO 2 ] + [ CaO ] [ SiO 2 ] + [ Mg ? O ] 3 > 3.5 ; ? ? 0.1 < [ CaO ] [ SiO 2 ] < 1.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process comprises the steps of: —subjecting the residue to a flash or agitated bath fuming step, thereby producing an Fe bearing slag and Zn- and Pb-bearing fumes; and —extracting the Zn- and Pb-bearing fumes and valorising Zn and Pb; characterised in that CaO, SiO2 and MgO are added as a flux before or during the fuming step so as to obtain a final slag composition with: formula (I) all concentrations being expressed in wt %. The invention also relates to a single-chamber reactor for Zn-fuming equipped with one or more submerged plasma torches as heat and gas sources. [ Fe ] [ SiO 2 ] + [ CaO ] [ SiO 2 ] + [ MgO ] 3 > 3.5 ; 0.1 < [ CaO ] [ SiO 2 ] < 1.

Abstract: This invention relates to a single-step pyrometallurgical process for the recovery of non-ferrous metals from zinc bearing residues, in particular from by-products of the zinc and lead industry such as goethite and jarosite. A process for the recovery of metals from industrial Zn residues containing Zn, Fe and S is defined, wherein Zn is fumed, Fe is slagged, and S is oxidized to SO2, characterized in that the Zn fuming, the Fe slagging, and the S oxidation are performed in a single step process, by smelting the residues in a furnace comprising at least one submerged plasma torch generating an oxidizing gas mixture, and by feeding a solid reducing agent to the melt. The process achieves the oxidation of S and the slagging of Fe, while simultaneously achieving the reduction and the fuming of metals such as Zn.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process allows for the valorisation of metal values in a Zn-, Fe- and Pb-bearing residue, and comprises the steps of: subjecting the residue to a direct reduction step, thereby producing a metallic Fe-bearing phase and Zn- and Pb-bearing first fumes; extracting the Zn- and Pb-bearing first fumes and valorising Zn and Pb; subjecting the metallic Fe-bearing phase to an oxidising smelting step, thereby producing an Fe-bearing slag and second metals-bearing fumes; extracting the second metals-bearing fumes and valorising at least part of their metallic content. The main advantage of this process is that an environmentally acceptable output for Fe is obtained.

Abstract: The invention relates to the separation of metals in Fe-bearing zinc leaching residues, in particular neutral and weak acid leach residues. The process comprises the steps of: preparing agglomerates containing, besides the Zn leaching residue, at least 5 wt % of carbon and 2 to 10 wt. % of S; fuming said agglomerates in a static bed at a temperature above 1250° C., thereby producing a reduced Fe-bearing phase and Zn-bearing fumes; and extracting said Zn-bearing fumes. The high S content of the feed allows for a relatively high operating temperature without production of molten phases. This guarantees fast reduction and fuming kinetics, and permits the use of a compact technology such as a static bed furnace.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process allows for the valorisation of metal values in a Zn-, Fe- and Pb-bearing residue, and comprises the steps of: subjecting the residue to a direct reduction step, thereby producing a metallic Fe-bearing phase and Zn- and Pb-bearing first fumes; extracting the Zn- and Pb-bearing first fumes and valorising Zn and Pb; subjecting the metallic Fe-bearing phase to an oxidising smelting step, thereby producing an Fe-bearing slag and second metals-bearing fumes; extracting the second metals-bearing fumes and valorising at least part of their metallic content. The main advantage of this process is that an environmentally acceptable output for Fe is obtained.

Abstract: The invention relates to a process for the separation and recovery of non-ferrous metals from zinc-bearing residues, in particular from residues produced by the zinc manufacturing industry. The process comprises the steps of: -subjecting the residue to a flash or agitated bath fuming step, thereby producing an Fe bearing slag and Zn- and Pb-bearing fumes; and -extracting the Zn- and Pb-bearing fumes and valorising Zn and Pb; characterised in that CaO, SiO2 and MgO are added as a flux before or during the fuming step so as to obtain a final slag composition with: formula (I) all concentrations being expressed in wt %. The invention also relates to a single-chamber reactor for Zn-fuming equipped with one or more submerged plasma torches as heat and gas sources. [ Fe ] [ SiO 2 ] + [ CaO ] [ SiO 2 ] + [ MgO ] 3 > 3.5 ; 0.1 < [ CaO ] [ SiO 2 ] < 1.