在1983年开始的关于“无公害精炼、变质剂”的效果和是否造成环境污染的学术讨论,已进行了四年。本刊就此发表了一系列不同观点的文章。通过我国铝铸造工作者的努力,在大量现场测试和机理研究的基础上,本会议纪要实事求是地反映了对“无公害精炼、变质剂”的评价,并以此作为这一学术讨论的总结。 The academic discussion on the effects of “pollution-free refining, modifiers” and whether or not environmental pollution has been initiated since 1983 has been carried out for four years. This publication published a series of articles on different points of view. Through the efforts of aluminum foundry workers in our country, based on a large number of field tests and mechanism studies, the minutes of this conference reflect the evaluation of “pollution-free refining and metamorphic agents” as a matter of fact and as a summary of this academic discussion.