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System and method for recovering metals from a waste stream

A technology for waste streams and metals, applied in chemical instruments and methods, grain processing, wet separation, etc., can solve problems that hinder the free movement of metals and cannot be used

Inactive Publication Date: 2017-05-10
TAV HLDG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In general, the use of wet gravity separators and wet centrifugal separators on waste materials has become impossible
Waste materials such as IBA, ASR, WSR, and WEEE can be flat sheets or pin-shaped or hairsprings that can form nests and barriers that prevent the free movement of the heavier metals being separated, making typically wet gravity separators and The waste stream from the wet centrifuge is unusable

Method used

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  • System and method for recovering metals from a waste stream
  • System and method for recovering metals from a waste stream
  • System and method for recovering metals from a waste stream

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Embodiment Construction

[0016] Detailed embodiments of systems, devices and methods are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the systems, devices and methods, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the systems, devices and methods disclosed herein.

[0017] In general, the present application relates to devices, systems and methods for recovering metal components from metal-containing waste streams (eg, incinerator ash). Down velocity separators and centrifuges are used to separate and collect metals from incinerator ash. The falling velocity separator uses a liquid, such as water, for example, to separate particles according to their settling velocity. A magnetic separator may also be used, which removes iron particl...

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Abstract

Devices, systems, and methods for recovering metal constituents from a waste stream containing metals (e.g., incinerator ash) are described. The waste stream may include incinerator bottom ash, fly ash, or a combination thereof. A falling velocity separator is employed in combination with a centrifuge to separate and collect metals from the waste stream. The falling velocity separator uses a liquid to separate particles within incinerator ash according to the particles settling velocities. The centrifuge further separates particles from the incinerator ash according to density of the particles.

Description

[0001] relevant application data [0002] This application claims priority to US Provisional Patent Application No. 62 / 002049, filed May 22, 2014, which is hereby incorporated by reference. technical field [0003] The present disclosure relates generally to metal recovery, and in particular to recovery of metals from metal-containing waste streams (eg, incinerator ash). Background technique [0004] Throughout the world, the adverse environmental impact of landfilling waste has been noted. Proper landfilling of waste requires large areas of land, which may be in limited supply in certain urban areas. Waste can also cause harmful environmental impacts, including impacts on the groundwater table below the disposal site, due to contamination by chemicals and heavy metals contained in the waste. [0005] One technique used to reduce the volume of waste in landfills is waste incineration. The incineration process involves burning the organic components of the waste to produce...

Claims

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Application Information

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IPC IPC(8): B03B9/04B03C1/30C22B7/04
CPCB03B9/04B03C1/30C22B7/04C22B7/02Y02P10/20B02C17/185B03B5/623B03B5/626B03C1/02B03C2201/20C22B7/005
Inventor 托马斯·瓦莱里奥
Owner TAV HLDG
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