摘要
用量子化学的ＣＮＤＯ／Ｍ方法，计算羟（氧）肟酸分子及其离子、羟肟酸铜、羟肟酸离子与氧化铜矿物或硫化铜矿物吸附体系的简化模型。计算结果表明：羟肟酸（ＲＣＯＨＮＯＨ）能与其变体——氧肟酸（ＲＣＯＮＨＯＨ）同时存在。无论是羟肟酸、氧肟酸还是它们的离子，与金属离子络合时，都将形成Ｏ、Ｏ五元环络合物。羟肟酸类药剂是氧化铜矿物的良好捕收剂，其对氧化铜矿物的吸附作用比对硫化铜矿物更强。
The quantum chemical CNDO/M method is used for calculation the molecules of hydroximic acid and its ions, the molecule of copper hydroxmate and reduced model of hydroximic ion adsorption on minerals of copper oxides or sulphides. The results show that for hydroximic acid two structures——RCOHNOH and RCONHOH can coexist.Whichever of them (RCOHNOH, RCONHOH or their ions) complxing with metallic ions, the formed compound is ′0,0″ 5-ring complex. The hydroxmate is a good collector in flotation of copper oxides. The adsorption reaction between hydroximic ions and copper oxides is stronger than that between hydroximc ions and copper sulphises. \ \
出处
《有色金属》
CSCD
1997年第4期24-28,共5页
Nonferrous Metals
关键词
羟肟酸
铜矿物
吸附体系
量子化学
捕收剂
选矿
CNDO \ method
quantum chemistry
hydroxmates
copper oxides
copper sulphides
