日本住友化学工业公司（SumitomoChemicalCompany，Limited）发明一种生产高纯铝的新工艺，并在美国取得了专利，专利号为：６１５６０９５。生产工艺为：将一个受到冷却的物体插入铝熔体中，铝熔体温度保持在液相范围内，在冷却体表面上有高纯的铝晶体形核并长大为晶粒；使受? Sumitomo Chemical Company Limited (Sumitomo Chemical Company, Limited) invented a new high-purity aluminum production technology, and in the United States made a patent, patent number: 6156095. The production process is that: an object to be cooled is inserted into an aluminum melt, an aluminum melt temperature is maintained within a liquid phase, and a highly pure aluminum crystal nucleus is formed on the surface of the cooling body and grows into grains;