# US 10,118,182 B2 · Incineration byproduct processing and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,182 B2 - Document ID: US10118182B2 - Status: Granted - Kind: B2 - Application number: 15/433,969 - Filed: 2017-02-15 - Published: 2017-06-08 - Granted: 2018-11-06 - Earliest claimed: 2012-05-25 - Assignees: Pure Recovery Group, L.P. - Applicants: Pure Recovery Group, L.P. - Inventors: John Vandemierden - Web page: https://patentgrep.com/patent/US10118182B2 ## CPC - B03B 9/04: specially adapted for furnace residues, smeltings, or foundry slags - B03B 7/00: Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage - B03C 1/10: with cylindrical material carriers (B03C1/247 takes precedence) - B03C 1/247: obtained by a rotating magnetic drum - B03C 1/30: Combinations with other devices, not otherwise provided for - B07B 15/00: Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material (using wet methods B03B7/00; using gas currents B07B9/00) - B30B 9/02: for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material (kitchen equipment A47J; filtering, e.g. straining solids from liquids, using presses in combination with filtering elements B01D; expelling water from textile fabrics or laundry D06C, D06F; drying F26 {; clothes presses D06F69/00, D06F71/00}) - B30B 9/12: using pressing worms or screws co-operating with a permeable casing - B30B 9/24: using an endless pressing band - C02F 11/13: by heating - C02F 11/147: using organic substances (C02F11/148 takes precedence) - B03C 2201/18: Magnetic separation whereby the particles are suspended in a liquid - C02F 11/12: by de-watering, drying or thickening - B03B: SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS - B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B) - B07B: SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C) - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## 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. ## Claims ### Claim 1 A method of processing incineration byproduct to obtain particles of unburned 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 adjusting the pH of the water prior to discharge, and (g) dewatering the ash sludge discharged from the thickener to produce ash cake. ### Claim 2 (depends on 1) The method of claim 1 further comprising the step of sorting the particles having a dimension greater than approximately three inches between metals and unburns. ### Claim 3 (depends on 2) The method of claim 2 further comprising the step of sorting the metals between ferrous and non-ferrous. ### Claim 4 (depends on 1) The method of claim 1 further comprising the step of separating the additional particles from the incineration byproduct in the wash plant by use of two or more screens located in the wash plant, the two or more screens having openings greater in size than approximately six mesh. ### Claim 5 (depends on 1) The method of claim 1 further comprising the step of discharging aggregate sand from the wash plant. ### Claim 6 (depends on 5) The method of claim 5 further comprising the step of discharging aggregate sand from the wash plant by use of sand screws. ### Claim 7 (depends on 1) The method of claim 1 further comprising the step of separating ash from the water in the thickener by passing ash laden water in the wash plant over one or more weir plates. ### Claim 8 (depends on 1) The method of claim 1 further comprising the step of recycling water from the dewatering step to the wash plant. ### Claim 9 (depends on 1) The method of claim 1 further comprising the step of supplying water to the wash plant. ### Claim 10 (depends on 1) The method of claim 1 further comprising the step of using a power screen for separating particles having a dimension greater than approximately three inches from the incineration byproduct. ### Claim 11 (depends on 3) The method of claim 3 further comprising the step of using a drum magnetic separator for sorting the ferrous materials. ### Claim 12 (depends on 3) The method of claim 3 further comprising the step of using an eddy current separator for separating the non-ferrous materials. ### Claim 13 (depends on 1) The method of claim 1 further comprising the step of producing ash cake by use of a belt filter press. ### Claim 14 (depends on 1) The method of claim 1 further comprising the step of producing ash cake by use of a screw press. ### Claim 15 (depends on 1) The method of claim 1 further comprising the step of passing the additional particles discharged from the wash plant through an air knife separation/elutriation system. ### Claim 16 (depends on 1) The method of claim 1 further comprising the step of separating the ash from the water in the thickener by treatment of ash laden water in the thickener with pH adjustment, coagulant and flocculant. ### Claim 17 (depends on 16) The method of claim 16 further comprising the step of injecting pH adjustment, coagulant and flocculant into the ash laden water in the thickener in amounts dependent upon particles sizes and solid concentrations in the ash laden water in the thickener. ### Claim 18 (depends on 1) The method of claim 1 further comprising the step of drawing water from the thickener and directing water drawn from the thickener to recycled water storage. ### Claim 19 (depends on 18) The method of claim 18 further comprising the step of supplying water from the recycled water storage to the wash plant. ### Claim 20 (depends on 1) The method of claim 1 further comprising the step of transferring incineration byproduct screened of particles having a dimension of greater than approximately three inches to a radial stacker, and transferring the incineration byproduct from the radial stacker to the wash plant.