Material recovery system for wet ash generated from municipal waste combustion

An ash processing system, comprising:

• an oversized and organic removal subsystem, comprising:
• one or more primary screens configured to separate first particles of the ash having a first diameter less than a predetermined diameter value from second particles of the ash having a second diameter greater than the predetermined diameter value;
• one or more first magnets configured to separate out ferrous metals from the ash;
• and
• an air classifier configured to remove light debris or organic material from the ash;
• and
• a material sizing subsystem, comprising:
• one or more secondary screens;
• one or more magnetic belt separators configured to remove magnetic solids from the ash;
• one or more first eddy current separators configured to recover non-ferrous metals;
• a crusher configured to reduce a particle size of the ash to a desired size;
• one or more second magnets configured to recover post-crush ferrous metals after the particle size reduction in the crusher;
• and
• one or more second eddy current separators configured to recover liberated non-ferrous metal upon the particle size reduction in the crusher.

A metal recovery system, comprising:

• a multi-deck screen to separate ash into a first size fraction, a second size fraction, and a third size fraction;
• a first eddy current separator;
• a second eddy current separator;
• a third eddy current separator;
• a first magnetic belt separator for recovering first magnetic solids from the first size fraction and conveying first non-magnetic solids to the first eddy current separator, wherein the first eddy current separator recovers non-ferrous metals from the first non-magnetic solids;
• a second magnetic belt separator for recovering second magnetic solids from the second size fraction and conveying second non-magnetic solids to the second eddy current separator, wherein the second eddy current separator recovers the non-ferrous metals from the second non-magnetic solids;
• and
• a third magnetic belt separator for recovering third magnetic solids from the third size fraction and conveying third non-magnetic solids to the third eddy current separator, wherein the third eddy current separator recovers the non-ferrous metals from the third non-magnetic solids;
• wherein the non-ferrous metals are fed to one or more air density separator tables for separating light non-ferrous metals from heavy non-ferrous metals.