摘要
贵州某氧化锌矿石中含Pb 2.32%,含Zn 9.38%,其中有价锌矿物以菱锌矿和异极矿为主。此矿氧化程度高,泥化情况明显,浮选回收过程中面临矿浆发黏、浮选药剂用量大、效果差等难题。为实现难选氧化锌的高效回收,将原矿经过脱泥筛分后,综合硫化-黄药、硫化-胺以及螯合类组合剂三种方案进行试验对比。试验结果表明:Na_(2)S+戊基黄药与Na_(2)S+十八胺的药剂方案对氧化锌矿分选效果不佳。最终确定新型螯合剂水杨醛缩氨基-2-硫酚与椰油胺的组合药剂方案,两者最佳质量比为4:1。采用“1粗2精2扫”的浮选流程,获得了精矿锌品位为25.97%,回收率为75.64%的较佳指标,实现了难选氧化锌矿中锌的高效回收。
The zinc oxide ore from Guizhou Province contains 2.32%of Pb and 9.38%of Zn,among which valuable zinc miner⁃als are mainly sphalerite and xenolite.This mine has a high degree of oxidation and obvious mud formation.During the flotation re⁃covery process,there are challenges such as sticky slurry,high dosage of flotation reagents,and poor effectiveness.In order to achieve efficient recovery of zinc oxide difficult to select,the raw ores were subjected to desliming and screening,and three schemes of comprehensive sulfurization xanthate,sulfurization amine,and chelating combination agents were tested and com⁃pared.The results show that Na_(2)S+amyl-xanthate and Na_(2)S+octadecylamine were not effective in the separation of zinc oxide ore.By using the combined collector scheme of Salicylideneamino-2-thiophenol+Cocoanut oil amine,a better index of zinc concen⁃trate grade of 25.97%and recovery of 75.64%was obtained when their mass ratio was 4:1.By adopting the flotation process of“1 coarse,2 fine,and 2 sweeping”,the optimal indicators of zinc grade of 25.97%and recovery rate of 75.64%in the concentrate were obtained,achieving efficient recovery of zinc from refractory zinc oxide ore.
作者
张谌虎
刘中一
朱山
陈鹏
王成勇
Zhang Chenhu;Liu Zhongyi;ZhuShan;Chen Peng;Wang Chengyong(School of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui 553004,China;College of Environmental and Chemical Engineering,Dalian University,Dalian 116622,China)
出处
《六盘水师范学院学报》
2024年第6期27-39,共13页
Journal of Liupanshui Normal University
基金
贵州省高等学校煤系共伴生固体资源高效清洁利用创新团队(黔教技[2023]087号)
六盘水复杂矿产资源高效清洁利用重点实验室(52020-2019-05-06)。
关键词
氧化锌
浮选
组合捕收剂
螯合类药剂
Zinc oxide
Flotation
Combined collector
Chelate agents
