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Recovery of Zn, Pb, Fe and Si from a low-grade mining ore by sulfidation roasting-beneficiation-leaching processes 被引量:7
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作者 LAN Zhuo-yue LAI Zhen-ning +3 位作者 ZHENG Yong-xing LV Jin-fang PANG Jie ning ji-lai 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第1期37-51,共15页
To recover Zn, Pb, Fe and Si from a low-grade mining ore in the Lanping basin, Yunnan Province, China, a novel technology using the roasting with pyrite and carbon followed by beneficiation and hydrochloric acid leach... To recover Zn, Pb, Fe and Si from a low-grade mining ore in the Lanping basin, Yunnan Province, China, a novel technology using the roasting with pyrite and carbon followed by beneficiation and hydrochloric acid leaching was proposed. Firstly, several factors such as pyrite dosage, roasting temperature, carbon powder dosage, holding time and particle size affecting on the flotation performance of Zn(Pb) and magnetic separation performance of Fe were simultaneously examined and the optimum process parameters were determined. A flotation concentrate, containing 17.46% Zn and 3.93% Pb, was obtained, and the Zn and Pb recoveries were 86.04% and 69.08%, respectively. The obtained flotation tailing was concentrated by a low-intensity magnetic separator. The grade of iron increased from 5.45% to 43.45% and the recovery of iron reached 64.87%. Hydrochloric acid leaching was then carried out for the magnetic separation tailing and a raw quartz concentrate containing 81.05% SiO2 was obtained. To further interpret the sulfidation mechanism of smithsonite, surface morphology and component of the sample before and after reactions were characterized by XRD and EPMA-EDS. The aim was to achieve the comprehensive utilization of the low-grade mining ore. 展开更多
关键词 low-grade mining ore comprehensive recovery sulfidation roasting flotation magnetic separation leaching
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锌冶炼渣选冶联合技术研究进展 被引量:5
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作者 宁继来 郑永兴 +1 位作者 胡盘金 庞杰 《矿冶》 CAS 2020年第3期18-24,共7页
随着锌资源供给矛盾日趋紧张,对于二次锌资源综合回收利用技术的研究已成为选冶领域研究的热点。根据目前国内外锌资源的选冶现状,在总结锌冶炼渣常规处理方法的基础上,综述了近年来采用选冶联合方法处理锌冶炼渣的研究进展。认为传统... 随着锌资源供给矛盾日趋紧张,对于二次锌资源综合回收利用技术的研究已成为选冶领域研究的热点。根据目前国内外锌资源的选冶现状,在总结锌冶炼渣常规处理方法的基础上,综述了近年来采用选冶联合方法处理锌冶炼渣的研究进展。认为传统的冶金或单一选矿方法从废渣中回收有价金属虽然有其优势,但也存在着诸如成本高、有价金属回收效率不理想、环保效果差等不足。比较而言,选冶联合方法可针对不同锌冶炼渣的成分及结构特点,结合各种技术优点,更加灵活地处理废渣,从而实现资源的综合回收,是未来二次锌资源回收领域的研究方向。 展开更多
关键词 锌冶炼渣 选冶联合 清洁回收
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Sulfidation mechanism of cerussite in the presence of sulphur at high temperatures 被引量:3
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作者 GE Bao-liang PANG Jie +2 位作者 ZHENG Yong-xing ning ji-lai Lü Jin-fang 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第11期3259-3268,共10页
In this paper,sulfidation mechanism of cerussite in the presence of sulphur at high temperatures was investigated based on micro-flotation,X-ray powder diffractometry(XRD),electron probe microanalysis(EPMA)and X-ray p... In this paper,sulfidation mechanism of cerussite in the presence of sulphur at high temperatures was investigated based on micro-flotation,X-ray powder diffractometry(XRD),electron probe microanalysis(EPMA)and X-ray photoelectron spectroscopy(XPS).The micro-flotation test results showed that flotation recovery of the treated cerussite increased to above 80%under a suitable flotation condition.It was found that the S/PbCO3 mole ratio and pH obviously affected flotation recovery.XRD analysis results confirmed that the cerussite was decomposed into massicot and then was transformed into mainly PbS and PbO·PbSO4 after sulfidation roasting.EPMA analysis results demonstrated that surface of the obtained massicot was smooth,but surface of the artificial galena was rough and even porous.Content of oxygen decreased,whereas content of sulphur increased with an increase in the S/PbCO3 mole ratio.XPS analysis results revealed that various lead-bearing species,including mainly PbS,PbSO4 and PbO·PbSO4,were generated at the surface.Formation of PbS was advantageous to flotation of the treated cerussite.Based on these results,a reaction model of the cerussite sulfurized with sulphur was proposed. 展开更多
关键词 cerussite massicot ROASTING SULFIDATION FLOTATION
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含砷硫铁矿浮选分离研究现状与进展 被引量:4
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作者 黄宇松 郑永兴 +2 位作者 宁继来 胡盘金 包凌云 《矿冶》 CAS 2021年第2期7-14,共8页
黄铁矿是地壳中分布最广的硫铁矿,毒砂常与其密切共生,它们的结构与表面化学性质相似,不易分离,故产出的黄铁矿精矿中常含有大量毒砂,会严重影响后续化工制酸产品质量,且污染环境。鉴于矿产资源高效利用与环境保护,毒砂与黄铁矿的分离... 黄铁矿是地壳中分布最广的硫铁矿,毒砂常与其密切共生,它们的结构与表面化学性质相似,不易分离,故产出的黄铁矿精矿中常含有大量毒砂,会严重影响后续化工制酸产品质量,且污染环境。鉴于矿产资源高效利用与环境保护,毒砂与黄铁矿的分离与综合回收利用具有重要意义。浮选是硫砷矿物分离的主要工艺,对硫砷矿物浮选工艺与药剂进行总结,阐述了近年来硫砷矿物浮选研究现状,展望了未来硫砷矿物浮选分离的发展方向。 展开更多
关键词 黄铁矿 毒砂 浮选 硫砷矿物分离
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