某锡铁矿尾矿脱铍回收工艺研究  

Study on the recovery process of de-beryllium from a tin-iron tailing

作　　者：黄雷鸣 吴艳妮[1] 魏祥松[1] 丁晓姜 姬云波 王贤伟 Huang Leiming;Wu Yanni;Wei Xiangsong;Ding Xiaojiang;Ji Yunbo;Wang Xianwei(Geological Institute of China Chemical Geology and Mine Bureau,Beijing,100101,China;Wancheng Shangwu Dongshengmiao Co.,Ltd,Bayan Nur,015100,China)

机构地区：[1]中化地质矿山总局地质研究院,北京100101 [2]万城商务东升庙有限责任公司,内蒙古巴彦淖尔015100

出　　处：《化工矿产地质》2022年第1期91-95,共5页Geology of Chemical Minerals

基　　金：自然资源部矿区生态修复工程技术创新中心;中化地质矿山总局资源高效清洁利用技术研究团队固废资源化技术研究(ZHTD202104)。

摘　　要：本研究以某锡铁矿尾矿为试验原料,采用高温焙烧-硫酸浸出工艺脱除尾矿中的有毒金属元素铍,考察了焙烧温度、焙烧助剂、浸出时间、浸出温度、液固比、焙烧时间、硫酸浓度等因素对尾矿中铍浸出率的影响。结果表明:尾矿经950℃高温焙烧2h后,以质量浓度30%硫酸作浸出剂,液固比4∶1,在90℃高温条件下浸出6h,可获得铍浸出率86.56%的试验指标;以氨水作为沉淀剂,调整含铍浸出液的pH值至8~9,可获得沉淀BeO品位0.200%、沉淀率98.72%的优异指标。This study take the tin-iron tailings as raw material to remove toxic metal beryllium by high-temperature roasting-sulfuric acid leaching process. The effect of these factors including roasting temperature, roasting aids,leaching time, liquid-to-solid ratio, roasting time and sulfuric acid concentration on beryllium leaching behavior was investigated. The results indicated that 86.56% of beryllium leaching rate could be obtained after the tailings was directly roasted at 950 ℃ for 2 hours and subsequently leached at 90 ℃ for 6 hours with a mass concentration of 30% sulfuric acid as leaching agent and liquid-to-solid ratio of 4:1,and the excellent index of BeO grade 0.200% and beryllium precipitate recovery 98.72% could be realized using aqueous ammonia as precipitant and adjusting the pH of leaching solution including beryllium to 8~9.

关 键 词：尾矿 含铍矿物 铍 焙烧 浸出 

分 类 号：TF803.21[冶金工程—有色金属冶金]