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作 者:吴恩辉[1] 李军[1] 侯静[1] 徐众[1] 黄平[1] 刘黔蜀[1] 吕松 Wu Enhui;Li Jun;Hou Jing;Xu Zhong;Huang Ping;Liu Qianshu;Lv Song(Panzhihua University,Panzhihua,Sichuan,China)
机构地区:[1]攀枝花学院,四川攀枝花617000
出 处:《矿产综合利用》2022年第5期20-24,共5页Multipurpose Utilization of Mineral Resources
基 金:国家级大学生创新创业训练计划项目(201811360001);国家自然科学基金项目(U1960101);四川省科技厅项目(2020YFH0195);四川省科技计划项目(2019ZYD026)。
摘 要:为了提高钒钛铁精矿中V_(2)O_(5)的综合利用率,采用正交实验法,对其进行了钛白废酸直接浸出和焙烧-浸出实验。直接浸出实验结果表明,对V_(2)O_(5)浸出率影响最大的因素是液固比,影响最小的是废酸浓度;在浸出温度为90℃,浸出时间90 min,液固比为5和废酸浓度为20%时,钒钛铁精矿中V_(2)O_(5)的浸出率较高,其值为71.05%。焙烧-浸出实验结果表明,对钒浸出率影响程度由大到小分别是焙烧温度、碳酸钾配比、碳酸钠配比和焙烧时间;在焙烧温度为1000℃,焙烧时间1 h,碳酸钠配比为5%和碳酸钾配比为10%时,V_(2)O_(5)的浸出率可达84.48%。In order to improve the comprehensive utilization rate of V_(2)O_(5) form vanadium titanomagnetite concentrates,the direct leaching and the roasting-leaching tests were carried out using titanium white waste acid byorthogonal experiment method.The results of direct leaching experiment show that the liquid-solid ratio is the most important factor affecting the leaching rate of V_(2)O_(5),and the concentration of titanium white waste acid is the least.The 71.05%vanadium can be leached under the experimental condition of 20%of titanium white waste acid,90℃for 90 min with a liquid-to-solid ratio of 5.The results of roasting-leaching experiment show that the effects of roasting temperature,K_(2)CO_(3) ratio,Na_(2)CO_(3) ratio and roasting time on the leaching rate of V_(2)O_(5) are from large to small.When the conditions of roasting time of 2 h,roasting temperature of 1000℃,Na_(2)CO_(3) ratio of 10%,and K_(2)CO_(3) ratio of 10%,and the leaching rate of V_(2)O_(5) can reach 84.48%.
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