本文叙述了在独立自主、自力更生的原则指引下,研制成功酰胺型萃取剂,以及应用于稀有金属的提取和分离的许多有成效的示例。二烷基乙酰胺是属于以羰基为官能团的弱碱性萃取剂,其特点是容易合成,物理化学性能好,选择性高。现巳成功地应用于铌钽分离,铊的提取,钼铼分离和萃取镓,在有关工厂生产实践中效果良好。
Under the guidance of the principle of independence and self-reliance, thesubstituted amide-type A-101 extractant has been successfully synthesized. Thistype extractant showed easy synthesis, better physico-chemical properties andhigher selectivity. Dialkylacetamide is one of weakly basic extractant with car-bonyl as functional group. Examples are given in which A-101 type extractanthas been used to extract and separate rare metals from ore concentrates, e.g.niobium-tantalum separation, thallium extraction, molybdenum-rhenium separa-tion, gallium extraction etc., in every case satisfactory results on industrial scalehave been obtained.
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