Abstract: A vaporised flow quenching reactor for producing a fine-powder from one or more reactant materials. The reactor comprises a first heat source selected from one of a DC plasma torch and RF plasma torch, a first reaction chamber within which energized reactant materials react and a first convergent-divergent nozzle for quenching the heated reactant materials from the first reaction chamber. The reactor also comprises a second reaction chamber provided for congregation of nano particles formed therefrom and a second convergent-divergent nozzle to deliver the nano particles to a collection chamber.

Abstract: A method of producing nanostructured zinc oxide powder. The method comprises introducing a source of zinc selected from metallic zinc or zinc compound and a process gas mixture which includes an oxidizing gas (the reactants) into a reactor. While in the reactor, the reactants are heated to a process temperature effective to vaporize the zinc and to react the reactants to form a powder product. The powder product is recovered.

Abstract: A vapourised flow quenching reactor for producing a fine-powder from one or more reactant materials. The reactor comprises a first heat source selected from one of a DC plasma torch and RF plasma torch, a first reaction chamber within which energized reactant materials react and a first convergent-divergent nozzle for quenching the heated reactant materials from the first reaction chamber. The reactor also comprises a second reaction chamber provided for congregation of nano particles formed therefrom and a second convergent-divergent nozzle to deliver the nano particles to a collection chamber.