CAJ | 학술논문

研究了用盐酸从废弃荧光粉中浸出稀土，考察了盐酸浓度、液固体积质量比、反应温度、反应时间、搅拌速度对稀土浸出率的影响，确定了较优的浸出条件。试验结果表明：在盐酸浓度2 mol/L、液固体积质量比5∶1、反应温度70℃、反应时间4 h、搅拌速度150 r/min条件下，稀土浸出率为83．45％。
연구료용염산종폐기형광분중침출희토，고찰료염산농도、액고체적질량비、반응온도、반응시간、교반속도대희토침출솔적영향，학정료교우적침출조건。시험결과표명：재염산농도2 mol/L、액고체적질량비5∶1、반응온도70℃、반응시간4 h、교반속도150 r/min조건하，희토침출솔위83．45％。
Extracting rare earth from waste phosphor using hydrochloric acid was studied .The effects of hydrochloric acid concentration ,the ratio between liquid volume and solid mass ,reaction tempera-ture ,reaction time and stirring speed on extraction of rare earth were investigated .The results show that at the optimum leaching conditions w hich are hydrochloric acid concentration of 2 mol/L ,liquid-solid ratio of 5∶1 ,reaction temperature of 70 ℃ ,reaction time of 4 h and stirring speed of 150 r/min , the leaching rate of rare earth is 83 .45% .