Precipitation of antimony from the solution of sodium thioantimonite by air oxidation in the presence of catalytic agents

来源期刊：中南大学学报(英文版)2002年第2期

论文作者：杨天足 赖琼琳 唐建军 楚广

文章页码：107 - 111

Key words：sodium thioantimonite; air oxidization; catalyzer

Abstract: The behavior of antimony oxidation in the solution of sodium thioantimonite was studied in the presence of catalytic agents. The catalytic effects ofthe respective addition of cupric sulfate, sodiumtartrate, potassium permanganate, phenol, 1,2-dihydroxybenzene and their combination on the oxidation of sodiumthioantimonite were investigated. Apilot testwas carried out. The results showthat the respective use of sodiumtartrate, cupric sulfate, potassium permanganate, phenol and 1,2-dihydroxybenzene have little catalytic effect on the oxidation of sodium thioantimonite. However there exists obvious catalytic oxidation by the combination of 0.25 g/L 1,2-dihydroxybenzene, 0.5 g/L potassium permanganate and 1.0 g/L phenol. Moreover, high blast intensity, the increase of temperature and NaOH concentration favor the oxidation of antimony. The oxidation process of antimony has such advantages as quick reaction and lowoperation costs. The results of the pilot test are consistentwith those of laboratory experiments.