| 摘要 |
This invention relates to powdered flux compositions and their use in purifying molten mixtures of aluminum and silicon before casting. The powdered flux compositions comprise a carbonate, a sodium and hydrogen free fluoride, and amorphous or encapsulated red phosphorus. The major advantage of the powdered flux is that all necessary components needed to purify the molten mixtures of aluminum and silicon and refine the silicon particles are together in one package, and purification can be carried out in one step.
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