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中秋诗会专利名称：PREPARATION OF HIGH PURITY ALUMINUM
发明人：TERAI SHIRO,KATO SAKAE,NISHIO MASAHIRO,IMAI MASAYA
申请号：JP7270580
申请日：19800602爱尔兰猎狼犬
公开号：JPS5941500B2
公开日：
19841008
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摘要：PURPOSE:To prepare a high purity aluminum, by using very simple equipment and operation to cool molten aluminum in a crucible from the bottom and to draw up a stirrer while stirring in the crucible in accordance with the solidification growth of the aluminum. CONSTITUTION:The molten aluminum to be purified having a temperature of 658-695 deg.C is thrown into graphite crucible 1 and graphite stirrer 3 is placed in the crucible. A cooling gas such as air is injected 8 to the bottom of crucible 1 to adjust the bottom temperature to a temperature of 650-690 deg.C, thereby initiating the aluminum solidification. In this ca, the operation is performed at a solidification growth rate of 0.1-2.5mm./c, the revolution number of stirrer 3 being t at a value of During the period, the solidification growth rate of aluminum is determined by adjusting the drawing up rate of stirrer 3 bad on the result. At the time when the solidification amount in accordance with the desired purity of purified aluminum is reached, stirrer 3 is lifted and immediately impure mother liquor remaining in the leadle is removed. Thereby, the solidified layer of the titled high purity aluminum is obtained.
申请人：SUMITOMO LIGHT METAL IND
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