Process and apparatus for recovery of raw materials from wastes residues

Process for recovering copper or nickel from wastes and residues comprising:

• providing a feed mixture comprising copper or nickel wherein the feed mixture is one selected from the group consisting of a liquid, a paste and a solid,
• mixing the feed mixture with at least one additive,
• chemically and thermally treating the mixed feed mixture at a temperature above 700° C. by blowing the mixed feed mixture into a rotary tube furnace or a fluidized-bed furnace and blowing a furnace atmosphere through the blown-in mixed feed mixture at a predetermined flow velocity and a predetermined temperature,
• forming waste gases,
• forming low density flakes including the copper or nickel,
• conveying the flakes and the waste gases to a downstream filter unit comprising at least two filters, and
• depositing the flakes on at least one filter,
• wherein the first filter in the filter unit is about 800° C., the second filter is about 200° C., and a cooling device is located between the first and second filters.

Process for recovering heavy metals from wastes and residues comprising:

• providing a feed mixture comprising a heavy metal wherein the feed mixture is one selected from the group consisting of a liquid, a paste and a solid,
• mixing the feed mixture with at least one additive,
• chemically and thermally treating the mixed feed mixture at a temperature above 700° C. by blowing the mixed feed mixture into a rotary tube furnace or a fluidized-bed furnace and blowing a furnace atmosphere through the blown-in mixed feed mixture at a predetermined flow velocity and a predetermined temperature,
• forming waste gases,
• forming low density flakes including the heavy metals,
• conveying the flakes and the waste gases to a downstream filter unit comprising at least two filters,
• depositing the flakes on at least one filter,
• conveying the waste gas to a heating device positioned between the filter unit and an afterburning chamber,
• heating the waste gas to temperatures in excess of 200° C., conveying the heated waste gas to the afterburning chamber located downstream of the filter unit,
• forming a flue gas,
• conveying the flue gas to a gas purification plant located downstream of the afterburning chamber, and
• recovering hydrochloric and/or sulfuric acid,
• wherein the first filter in the filter unit is about 800° C., the second filter in the filter unit is about 200° C., and a cooling device is located between the first and second filters.