Method for the exploitation/recovery of metallic iron and/or iron chloride from ores and/or ore residues in the form of pyrite residues, wherein the method comprises the following method steps: (a) providing, in particular preparing, a starting material in the form of at least one ore and/or ore residue, wherein the starting material contains: (i) iron as the main component, and (ii) at least one noble metal selected from gold and/or silver; (iii) at least one further metal selected from the group consisting of copper, zinc, lead, cobalt, titanium, manganese, vanadium and chromium; (b) oxidation treatment, in particular calcination and/or oxidative roasting, of the starting material provided in method step (a) using at least one oxidizing agent to obtain iron oxide and oxides of the further metals; (c) chlorination of the oxidation products obtained in method step (b), using at least one recyclable chlorinating agent, which comprises chlorinating iron oxide and oxides of the further metals to obtain iron chloride and chlorides of the other metals; (d) selective separation of iron chloride from the product mixture obtained in method step (c) and subsequent removal of chlorides from the further metals of the product mixture released from iron chloride, wherein the selective separation of iron chloride is effected by means of sublimation of the iron chloride, while the iron chloride selectively separated as such in this way is obtained by means of subsequent desublimation, or the iron chloride selectively separated in this way is subjected to a reduction to obtain metallic iron; wherein the chlorination is carried out as a solid phase reaction by using (NH 4 Cl) as the chlorinating agent, the ammonium chloride used as the chlorinating agent in method step (c), wherein the ammonium chloride used as the chlorinating agent is recycled by recovering the ammonia (NH 3) resulting from the chlorinating agent through the chlorination of the oxidation products, and subsequent reaction of the ammonia with hydrogen chloride (HCl), and wherein the recycling of the ammonium chloride is carried out in a reaction and condensation apparatus, and wherein the above-mentioned method steps (a) to (d) are carried out in the above-mentioned order. (a) providing, in particular preparing, a starting material in the form of at least one ore and/or ore residue, wherein the starting material contains: (i) iron as the main component, and (ii) at least one noble metal selected from gold and/or silver; (iii) at least one further metal selected from the group consisting of copper, zinc, lead, cobalt, titanium, manganese, vanadium and chromium; (i) iron as the main component, and (ii) at least one noble metal selected from gold and/or silver; (iii) at least one further metal selected from the group consisting of copper, zinc, lead, cobalt, titanium, manganese, vanadium and chromium; (b) oxidation treatment, in particular calcination and/or oxidative roasting, of the starting material provided in method step (a) using at least one oxidizing agent to obtain iron oxide and oxides of the further metals; (c) chlorination of the oxidation products obtained in method step (b), using at least one recyclable chlorinating agent, which comprises chlorinating iron oxide and oxides of the further metals to obtain iron chloride and chlorides of the other metals; (d) selective separation of iron chloride from the product mixture obtained in method step (c) and subsequent removal of chlorides from the further metals of the product mixture released from iron chloride, wherein the selective separation of iron chloride is effected by means of sublimation of the iron chloride, while the iron chloride selectively separated as such in this way is obtained by means of subsequent desublimation, or the iron chloride selectively separated in this way is subjected to a reduction to obtain metallic iron;