Electric arc furnace dust recycling apparatus and method
AssigneeEmpire Technology Development LLC
InventorEzekiel Kruglick
Life of this patent
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Abstract
The present technology provides an illustrative apparatus for recycling electric arc furnace (EAF) dust and method of use related to the same. The apparatus has a heat controlling region coupled to a separation volume and includes at least one magnet and a cooling region. The heating controlling region operates at a temperature sufficient to transform at least some of the EAF dust into a mixture of gaseous zinc and one or more additional metals. The magnet separates the iron-rich material from the mixture of gaseous zinc and one or more additional metals and the cooling region condenses the gaseous zinc.
Claims17
An apparatus for recycling electric arc furnace (EAF) dust material, the apparatus comprising:
- a heat controlling region configured to control a temperature of EAF dust material within the heat controlling region such that the temperature of the EAF dust material is sufficient to transform at least a portion of the EAF dust material into a mixture of gaseous zinc and one or more additional metals, wherein the one or more additional metals comprise iron-rich material and steel additives;
- and
- a separation volume coupled to the heat controlling region and configured to receive the mixture of gaseous zinc and one or more additional metals, wherein the separation volume is configured to:
- separate within the separation volume the iron-rich material from the mixture of gaseous zinc and one or more additional metals;
- and
- direct the gaseous zinc to a cooling region;
- and
- wherein the separation volume comprises a cooling region configured to condense the gaseous zinc within the cooling region after the iron-rich material is separated, wherein the condensing the gaseous zinc comprises condensing zinc oxide into different grades that fall out at different locations within the separation unit, and wherein the cooling region comprises a cooling air injection port configured to mix cooling air with the gaseous zinc.
An apparatus for recycling electric arc furnace (EAF) dust material, the apparatus comprising:
- a heat controlling region configured to control a temperature of EAF dust material within the heat controlling region such that the temperature of the EAF dust material is sufficient to transform at least a portion of the EAF dust material into a mixture of gaseous zinc and one or more additional metals, wherein the one or more additional metals comprise iron-rich material and steel additives, and wherein the heat controlling region comprises an inductively-heated vertical structure configured to heat the EAF dust material as it falls within the inductively-heated vertical structure;
- and
- a separation volume coupled to the heat controlling region and configured to receive the mixture of gaseous zinc and one or more additional metals, wherein the separation volume is configured to:
- separate within the separation volume the iron-rich material from the mixture of gaseous zinc and one or more additional metals;
- and
- direct the gaseous zinc to a cooling region;
- and
- wherein the separation volume comprises a cooling region configured to condense the gaseous zinc within the cooling region after the iron-rich material is separated, wherein the condensing the gaseous zinc comprises condensing zinc oxide into different grades that fall out at different locations within the separation unit.
An apparatus for recycling electric arc furnace (EAF) dust material, the apparatus comprising:
- a heat controlling region configured to control a temperature of EAF dust material within the heat controlling region such that the temperature of the EAF dust material is sufficient to transform at least a portion of the EAF dust material into a mixture of gaseous zinc and one or more additional metals, wherein the one or more additional metals comprise iron-rich material and steel additives;
- and
- a separation volume coupled to the heat controlling region and configured to receive the mixture of gaseous zinc and one or more additional metals, wherein the separation volume is configured to:
- separate within the separation volume the iron-rich material from the mixture of gaseous zinc and one or more additional metals;
- and
- direct the gaseous zinc to a cooling region;
- and
- wherein the separation volume comprises a cooling region configured to condense the gaseous zinc within the cooling region after the iron-rich material is separated, wherein the condensing the gaseous zinc comprises condensing zinc oxide into different grades that fall out at different locations within the separation unit, and wherein the cooling region comprises a plurality of zinc oxide collection areas positioned horizontally across the cooling region, wherein each zinc oxide collection area of the plurality of zinc oxide collection areas collects a different grade of condensed zinc oxide.
Dependencies are inferred from the claim text.