金属熔体的净化是冶金铸造业的一个基本问题。以电解获得的或从固体原始材料重熔而成的金属都含有大量的夹杂物,这就涉及到氢、钠以及大部分以氧化物存在的非金属夹杂物。净化熔体的任务就在于进一步减小氢、钠以及夹杂的浓度,使其在随后的加工中不再有害。因此,过去就已发明了各种净化方法,生产上采取的重要措施有: Purification of metal melt metallurgy foundry industry is a basic problem. Metals that are electrolytically obtained or remelted from a solid starting material contain a large amount of inclusions, and this involves hydrogen, sodium, and most of the non-metallic inclusions that are present as oxides. The task of cleaning the melt is to further reduce the concentration of hydrogen, sodium and inclusions so that they are no longer detrimental to the subsequent processing. Therefore, in the past have been invented a variety of purification methods, the production of the important measures taken are: