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US 2015/0020701 A1Published application
Incineration byproduct processing systems and methods
AssigneePure Recovery Group, L.P.
InventorJohn VANDEMIERDEN
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Abstract
Methods and systems for processing incineration byproduct from waste incinerators, ash purification and recovery of materials and metals. High levels of aggregate and metals recovery and ash purification are achieved for residual ash with reduced environmental contaminants.
Claims35
A method of processing incineration byproduct to obtain particles of unhurried material, aggregate sand and ash, the process comprising the steps of
- (a) receiving incineration byproduct and passing the incineration byproduct through a screen and separating particles having a dimension greater than approximately three inches from the incineration byproduct;
- (b) transferring the incineration byproduct to a wash plant equipped to hold water and the incineration byproduct;
- (c) mixing water with the incineration byproduct in the wash plant;
- (d) separating additional particles from the incineration byproduct in the wash plant, the additional particles having a dimension greater than approximately six mesh;
- (e) discharging the additional particles from the wash plant;
- (f) transferring incineration byproduct mixed with water from the wash plant to a thickener and separating ash from the water in the thickener as ash sludge discharged from the thickener, and
- (g) dewatering the ash, sludge discharged from the thickener to produce ash cake.
4 more elements
A method of processing incineration byproduct to obtain metals, recycled aggregate products and purified, ash from the incineration byproduct, the method comprising the steps of:
- (a) screening incineration byproduct to remove particles having a dimension greater than approximately three inches from the incineration byproduct;
- (b) transferring screened incineration byproduct into a wash plant and mixing water with the incineration byproduct in the wash plant;
- (c) screening additional particles from the incineration byproduct in the wash plant through multiple screens located in the wash plant;
- (d) discharging the additional particles screened from the incineration byproduct in the wash plant from the wash plant;
- (e) transferring incineration byproduct mixed with water from the wash plant to a thickener and separating ash from the water in the thickener by chemical and mechanical separation to produce ash sludge;
- (f) discharging ash sludge from the thickener to a dewatering unit;
- (g) dewatering the e ash sludge in the dewatering unit to produce ash cake.
4 more elements
Dependencies are inferred from the claim text.