| A new purifying process using the principle of the fractional melting has been developed and tested for the commercial 99% aluminium. The fractional melting of specimen was performed in a molten salt bath, the temperature of which was controlled artificially through out the process. On exuding, the liquid metal was ejected from the solid specimen by centrifugal force. The purifying level of the products was controlled by various processing parameters such as rotating speed, heating rate, the shape of specimens, and starting salt temperature. The nature and the type of the filter were also important parameters to achieve a good result. The wetness, representing the efficiency of purification, was evaluated as 0.07 to suggest an excellent purifying effect during the fractional melting process of Al alloy. |
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