CAJ | 학술논문

对河南某钒矿进行了活化焙烧-酸浸实验,系统考察了添加剂种类与用量、焙烧温度、焙烧时间、浸取酸度、液固比、浸取温度及时间对钒浸取率的影响.实验结果表明:焙烧过程中,采用氧化钙为添加剂,控制添加量为10%,850～900℃下焙烧3 h,矿样的活化效果较好;酸浸过程中,硫酸酸度为5%,液固比为2.5:1,70～80℃,漫出3 h的条件下,钒的浸出率最高,可达80%以上.
대하남모범광진행료활화배소-산침실험,계통고찰료첨가제충류여용량、배소온도、배소시간、침취산도、액고비、침취온도급시간대범침취솔적영향.실험결과표명:배소과정중,채용양화개위첨가제,공제첨가량위10%,850～900℃하배소3 h,광양적활화효과교호;산침과정중,류산산도위5%,액고비위2.5:1,70～80℃,만출3 h적조건하,범적침출솔최고,가체80%이상.
Vanadium was recovered by a new roasting-acid leaching process from vanadium ore in Henan Province. The influence of category of additive, percentage of additive, roasting temperature, roasting time, acid concentration, solid-to-liquid ratio, leaching temperature and leaching time upon leaching rate was investigated. The experimental results showed that the vanadium ore was well activated when calcium oxide was used as additive, the percentage of additive was 10% and the ore was roasted at 850～900℃ for 3 hours. In acid leaching process, the leaching rate was above 80% when the ore was leached at 70～80℃for 3 hours, the add concentration was 5% and the solid-to-liquid ratio was 2.5 : 1.