A method and apparatus to reclaim metals from scrap material such as automobile shredder residue (ASR) that, after separating out light density components, separates out friable material such as rock and glass by crushing and screening operations to generate a high metal content product.

A method and apparatus to reclaim metals from scrap material such as automobile shredder residue (ASR) that, after separating out light density components, separates out friable material such as rock and glass by crushing and screening operations to generate a high metal content product.

A method for preparing clean aggregate from a waste stream including sizing the incinerator combined ash to recover a first material; wet screening the first material with a first screen to recover the material of disparate sizes; and processing each of the groups.

A method for preparing clean aggregate from a waste stream including sizing the incinerator combined ash to recover a first material; wet screening the first material with a first screen to recover the material of disparate sizes; and processing each of the groups.

A process for preparing whitened fly ash includes the steps of: (a) subjecting fly ash to a size classification step to obtain size classified fly ash having a particle size such that at least 90 wt % has a particle size of from 44 ?m to 250 ?m; (b) optionally, contacting the size classified fly ash from step (a) with water to form a slurry, wherein the slurry has a solid content of less than 40 wt %; (c) subjecting the slurry obtained in step (b) to an exhaustive magnetic separation step to form magnetically treated fly ash, wherein the exhaustive magnetic separation step includes a first magnetic extraction step and a second magnetic extraction step, wherein the second magnetic extraction step is carried out at a higher magnetic field strength than the first magnetic extraction step; and (d) subjecting the magnetically treated fly ash obtained in step (c) to milling to form whitened fly ash.

A process for preparing whitened fly ash includes the steps of: (a) subjecting fly ash to a size classification step to obtain size classified fly ash having a particle size such that at least 90 wt % has a particle size of from 44 ?m to 250 ?m; (b) optionally, contacting the size classified fly ash from step (a) with water to form a slurry, wherein the slurry has a solid content of less than 40 wt %; (c) subjecting the slurry obtained in step (b) to an exhaustive magnetic separation step to form magnetically treated fly ash, wherein the exhaustive magnetic separation step includes a first magnetic extraction step and a second magnetic extraction step, wherein the second magnetic extraction step is carried out at a higher magnetic field strength than the first magnetic extraction step; and (d) subjecting the magnetically treated fly ash obtained in step (c) to milling to form whitened fly ash.

A method for processing ash from waste incineration plants by wet classification includes mixing the ash with a liquid in a mixing hopper. After screening, the mixture is fed to a first classifying stage, including an upflow classifier and an upstream hydrocyclone, where it is separated into a good fraction and a residual fraction. The residual fraction is drawn off as a suspension on an upper side of a fluidized bed of the upflow classifier. The good fraction is drawn off on an underside of the fluidized bed. A pass through fraction is fed back into the hydrocyclone installation and a material flow containing particles which are smaller than a separation particle size is separated as cyclone overflow. The cyclone overflow is separated in a second classifying stage into a fine particle mineral fraction and a residue which has a grain size upper limit between 20 m and 50 m.

A method for processing ash from waste incineration plants by wet classification includes mixing the ash with a liquid in a mixing hopper. After screening, the mixture is fed to a first classifying stage, including an upflow classifier and an upstream hydrocyclone, where it is separated into a good fraction and a residual fraction. The residual fraction is drawn off as a suspension on an upper side of a fluidized bed of the upflow classifier. The good fraction is drawn off on an underside of the fluidized bed. A pass through fraction is fed back into the hydrocyclone installation and a material flow containing particles which are smaller than a separation particle size is separated as cyclone overflow. The cyclone overflow is separated in a second classifying stage into a fine particle mineral fraction and a residue which has a grain size upper limit between 20 m and 50 m.

A system and process for reclaiming metals from bottom ash material comprising a pair of rod mills each having an inlet for receiving material and an outlet for discharging material, the outlet of a first rod mill being connected to the inlet of a second rod mill, said rod mills for inclination and power, a circuit for water flow through the rod mills for flushing crushed material and metal from the rod mills to a screen where metal is separated from minerals and water and a processing device for separating minerals from the water of the screen separated minerals and water.

A method for separating composite materials and mixtures, in particular solid-material mixtures and slags, and to a device for carrying out said method. The method for separating composite materials and mixtures comprises the step of transporting the composite material or the mixture through a separating device. The composite material to be separated or the mixture to be separated is excited by mechanical impulses as it passes through the separating device and is thereby separated. The device (1) for carrying out the method comprises a drive unit (21) for driving a rotor element (32), which is connected to a bearing/shaft unit (22) and which is part of a rotor unit (31). The rotor element itself has at least one rotor tool (33) and each rotor tool has at least one rotor tool component (34) and is surrounded by a stator element (42), which is part of a stator unit (41). The stator element itself has at least one stator tool (43) and each stator tool has at least one stator tool component (44). The rotor element and the stator element are substantially cylindrical.