CAJ | 학술논문

研究了用二甲苯浸出-焙烧-硫酸浸出杂质-氰化浸出银工艺从湿法炼锌渣中回收硫和银。试验结果表明：在反应温度95℃、反应时间15 min、液固体积质量比5∶1条件下用二甲苯浸出，硫浸出率为96．40％；分硫渣中加入1％氢氧化钠，在630℃下焙烧2 h ，然后用硫酸浸出锌、铁等杂质，控制液固体积质量比为4∶1，pH为1．0，反应温度为95℃，反应时间为3h；之后对硫酸浸出渣氰化浸出银，体系pH控制在9．5～11．5之间，液固体积质量比为3∶1，氰化钠质量浓度2．0g/L，浸出时间24h，银回收率为78．5％。
연구료용이갑분침출-배소-류산침출잡질-청화침출은공예종습법련자사중회수류화은。시험결과표명：재반응온도95℃、반응시간15 min、액고체적질량비5∶1조건하용이갑분침출，류침출솔위96．40％；분류사중가입1％경양화납，재630℃하배소2 h ，연후용류산침출자、철등잡질，공제액고체적질량비위4∶1，pH위1．0，반응온도위95℃，반응시간위3h；지후대류산침출사청화침출은，체계pH공제재9．5～11．5지간，액고체적질량비위3∶1，청화납질량농도2．0g/L，침출시간24h，은회수솔위78．5％。
Recovery of silver and sulfur from zinc smelting residue by dimethylbenzene leaching sulfur -roasting-sulfuric acid leaching impurities-cyanide leaching silver process is investigated .T he result show that the leaching rate of sulfur is 96 .40% under the conditions of reaction temperature of 95 ℃ , reaction time of 15 min and the ratio between liquid volume and solid mass of 5 ∶ 1 .The roasting conditions of sulfur leaching residue are adding sodium hydroxide of 1% into the residue ,roasting temperature of 630 ℃ ,roasting time of 2 h .T he conditions of leaching impurities using sulfuric acid are the ratio between of liquid volume and solid mass ,system pH of 1 .0 ,reaction temperature of 95℃ ,reaction time of 3 h .The cyanide leaching silver under the conditions of system pH of 9 .5-11 .5 , the ratio between liquid volume-solid mass of 3∶1 ,sodium cyanide concentration of 2 g/L ,reaction time of 24 h ,the leaching rate of silver is 78 .50% .