<p>The present invention relates to a process of treating filter powders (3) of the type produced in aluminium recycling processes in a recycling system for recycling the metal (1) of saline slag recycling (2), comprising at least a pyrolysis step (31) in which the filter powders (30) enter a rotating auger where they are heated to a temperature of not less than 500°C and not more than 600°C; and in which the organic and toxic substances breakdown in this heating and part of the carbon and other combustibles burn in the controlled presence of air, this air being mixed with the powder by the movement of the rotating auger; in which organic materials are oxidized due to the oxygen provided; and in which the solid result of the pyrolysis step (31) is added to the general saline slag recycling process (2).</p>
申请公布号
AT426047(T)
申请公布日期
2009.04.15
申请号
AT20060380322T
申请日期
2006.12.18
申请人
BEFESA ALUMINIO BILBAO, S.L.
发明人
RUIZ DE VEYE, CARLOS;ALFARO ABREU, IGNACIO;MUGICA IRAOLA, JUAN CARLOS;AGUIRRE MUJICA, PATRICIO;SOLOZABAL ECHEVARRIA, RODOLFO;ARAGON PUY, JORGE JUAN;ARENALES GOMEZ, EDUARDO