Process for working up resh or shredder light fractions, with CaCO3

A process for working up starting materials comprising a member selected from the group consisting of RESH and shredder light fractions, the RESH and shredder light fractions containing iron, said process comprising:

• subjecting the starting materials to magnetic separation to provide the starting materials with a total iron content of less than 6% by weight, then charging the starting materials into a fluidized bed gasifier;
• blowing at least one gas selected from the group consisting of hot air and combustion offgases having a temperature of above 450° C. through nozzles into the fluidized bed gasifier and thereby forming a counterflow grinding space;
• introducing CaCO3 into the fluidized bed gasifier;
• and
• calcining the CaCO3 in the counterflow grinding space to disintegrate the CaCO3 into disintegrated particles.

A process for working up starting materials comprising a member selected from the group consisting of RESH and shredder light fractions, the starting materials containing iron and copper, said process comprising:

• charging the starting materials into a fluidized bed gasifier having a fluidized bed;
• blowing at least one gas selected from the group consisting of hot air and combustion offgases having a temperature of above 450° C. through nozzles into the fluidized bed gasifier and thereby forming a counterflow grinding space;
• introducing CaCO3 into the fluidized bed gasifier;
• calcining the CaCO3 in the counterflow grinding space to disintegrate the CaCO3 into disintegrated particles;
• drawing the disintegrated particles off from the counterflow grinding space of the fluidized bed gasifier and screening the disintegrated particles;
• melting the disintegrated particles to form a melt;
• providing a metal bath reactor containing a metal bath and reducing the melt above the metal bath;
• and
• drawing off from the metal bath reactor by liquation a copper-containing phase while retaining an iron-containing phase in the metal bath reactor.

A process for working up starting materials comprising a member selected from the group consisting of RESH and shredder light fractions, the starting materials containing iron and copper, said process comprising:

• charging the starting materials into a fluidized bed gasifier having a fluidized bed;
• blowing at least one gas selected from the group consisting of hot air and combustion offgases having a temperature of above 450° C. through nozzles into the fluidized bed gasifier and thereby forming a counterflow grinding space;
• introducing CaCO3 into the fluidized bed gasifier;
• calcining the CaCO3 in the counterflow grinding space to disintegrate the CaCO3 into disintegrated particles;
• providing a hot cyclone and drawing off the disintegrated particles from the fluidized bed gasifier, the disintegrated particles comprising coarse stock and fine stock;
• returning at least a portion of the coarse stock from the hot cyclone to the fluidized bed gasifier;
• discharging the fine stock from the hot cyclone and melting the discharged fine stock to produce a molten slag;
• providing a metal bath reactor containing a metal bath and reducing the molten slag above the metal bath;
• and
• drawing off from the metal bath reactor by liquation a copper-containing phase while retaining an iron-containing phase in the metal bath reactor.