Method and apparatus for removing plated metal from steel sheet scraps

An apparatus for removing plated metal from steel sheet scraps comprising:

• a pretreatment chamber having heating means for heating metal plated steel sheet scraps to a temperature in a range of about 200.degree. C.-500.degree. C. to evaporate organic material adhered to the scraps and contained in the scraps, a pressure reducing pump being connected to the pretreatment chamber via a passage, and a filter for capturing the evaporated organic material being installed in the passage connecting the pretreatment chamber to the pressure reducing pump;
• a treatment chamber having a heater for heating the scraps from which organic material has been removed to a temperature in a range of about 500.degree. C.-900.degree. C., a pressure reducing pump being connected to the treatment chamber via a passage, and an evaporated metal retrieving device being installed in the passage connecting the treatment chamber to the pressure reducing pump;
• and
• a cooling chamber for cooling the scraps.

An apparatus for removing plated metal from steel sheet scraps comprising:

• a preheat chamber for preheating metal plated steel sheet scraps;
• a pretreatment chamber having heating means for heating the preheated scraps to a temperature in a range of about 200.degree. C.-500.degree. C. to evaporate organic material adhered to the scraps and contained in the scraps, a pressure reducing pump for reducing a pressure in the pretreatment chamber being connected to the pretreatment chamber via a passage, and a filter for capturing the evaporated organic material being installed in the passage connecting the pretreatment chamber to the pressure reducing pump;
• an intermediate chamber through which the scraps from the pretreatment chamber is conveyed;
• a treatment chamber having a heater for heating the scraps from which organic material has been removed to a temperature in a range of about 500.degree. C.-900.degree. C., a pressure reducing pump for reducing a pressure in the treatment chamber being connected to the treatment chamber via a passage, and an evaporated metal retrieving device being installed in the passage connecting the treatment chamber and the pressure reducing pump;
• and
• a cooling chamber for cooling the scraps.