| 摘要 |
<p>PURPOSE:To improve metal recovering efficiency and to simplify the device by charging plural pieces of agitating balls consisting of refractories into a rotary furnace, rotating the furnace body and thereby stirring residual ashes contg. a molten metal. CONSTITUTION:Aluminum scrap, etc., and plural pieces of the agitating balls 5 consisting of the lumped refractories are charged into the rotary furnace 1. The aluminum is heated to melt and the furnace body 1 is tilted to recover the Al from an aperture. The furnace body 1 is rotated in an inclined state to move the agitating balls 5 along the inside wall of the furnace and to agitate the residual ashes in the furnace body 1, by which the electric balls generated by a thermit reaction are broken and the aluminum metal component is separated and discharged. The furnace body 1 is further inclined and the molten metal (Al) 6 is taken out of the residual ashes. Spacings are formed between the plural agitating balls 5 and 5 at this time and the molten metal 6 separated from the other ashes flows out of the spacings. A grid 9 or the like is previously installed to the aperture of the furnace to prevent the agitating balls 5 from emerging to the outside.</p> |
