| 摘要 |
<p>PURPOSE:To improve the yield of molten Al and to facilitate Mg component adjustment by melting Al scrap, subjecting the resulted slag part to Mg removal in a regenerating furnace to form an ingot and charging the same into the molten metal from which the slag is removed. CONSTITUTION:The Al scrap is melted in a melting furnace. The upper layer part of the molten metal contg. the formed slag at a high ratio is taken out and is transferred into the regenerating furnace. The temp. of the above- mentioned slag part is increased to about 750-800 deg.C at this time. The Mg in the molten metal is thereby oxidized and is risen and separated into the slag. The Mg of the molten metal is thus removed. The ingot is produced from the molten metal subjected to such heating and Mg removal treatment and is stocked. The stocked ingot is charged into the molten metal from which the slag part is removed in the above-mentioned melting furnace. The content of the Mg in the molten Al is thereby decreased and the Mg component adjustment is easily executed; in addition, the yield of the molten metal is improved.</p> |
