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A review of intelligent ore sorting technology and equipment development

International Journal of Minerals,Metallurgy and Materials 2022年第9期29卷 1647-1655页

作者： xianping luo Kunzhong He Yan Zhang Pengyu He Yongbing Zhang Jiangxi Key Laboratory of High-efficiency Development and Application of Tungsten Resources Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution Control Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Under the background of increasingly scarce ore worldwide and increasingly fierce market competition,developing the mining industry could be strongly *** ore sorting equipment not only improves ore use and enhances the economic benefits of enterprises but also increases the ore grade and lessens the grinding cost and tailings ***,long-term research on intelligent ore sorting equipment found that the factors affecting sorting efficiency mainly include ore information identification technology,equipment sorting actuator,and information processing *** high precision,strong anti-interference capability,and high speed of these factors guarantee the separation efficiency of intelligent ore sorting *** ore sorter,X-ray ore transmission sorter,dual-energy X-ray transmission ore sorter,X-ray fluorescence ore sorter,and near-infrared ore sorter have been successfully developed in accordance with the different characteristics of minerals while ensuring the accuracy of equipment sorting and improving the equipment sorting *** the continuous improvement of mine automation level,the application of online element rapid analysis technology with high speed,high precision,and strong anti-interference capability in intelligent ore sorting equipment will become an inevitable trend of equipment development in the ***-induced breakdown spectroscopy,transientγneutron activation analysis,online Fourier transform infrared spectroscopy,and nuclear magnetic resonance techniques will promote the development of ore sorting *** addition,the improvement and joint application of additional high-speed and high-precision operation algorithms(such as peak area,principal component analysis,artificial neural network,partial least squares,and Monte Carlo library least squares methods)are an essential part of the development of intelligent ore sorting equipment in the future.

关键词： intelligent ore sorting technology sorting equipment separation efficiency online element rapid analysis technology

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Bi2WO6 doped with rare earth ions:Preparation,characterization and photocatalytic activity under simulated solar irradiation

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Journal of Rare Earths 2021年第1期39卷 58-66,I0003页

作者： Chunying Wang Chuantao Gu Ting Zeng Qingqing Zhang xianping luo College of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China School of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China

Rare-earth modification Bi2WO6 composites(RE/Bi2WO6)were studied by experimental performance and theory computation based on the different 4 f orbits of selected rare earth elements(La,Ce,Gd,and Yb).The prepared RE/Bi2WO6 was characterized by XRD,SEM/TEM,XPS,UV-vis DRS,and N2 adsorption to learn their physical-chemical *** dye Rhodamine B(RhB)was photodegraded as a target pollutant to investigate the photocatalytic activity of prepared RE/Bi2WO6 *** results of experiment and computation show that four rare earth elements with different electron configurations retain the phase and morphology of Bi2 WO6 and enhance the removal efficiency of RhB under simulated solar *** optimum doping contents are 0.01%,0.05%,0.05%and 0.01%for La-,Ce-,Gd-,and Yb-doped Bi2WO6,***,light rare earth La and Ce doped composites indicate some difference in visible light adso rption capacity and mineralization on RhB co mpared with heavy rare earth Gd and Yb doped *** La/Bi2WO6 and Ce/Bi2 WO6 possess larger pore size and higher mineralization ability than Gd/Bi2 WO6 and Yb/Bi2WO6 under the same experimental conditions while Gd/Bi2WO6 and Yb/Bi2WO6 show stronger red shift to the visible light due to the more 4 f *** hole oxidation plays a major role in the photodegradation of RhB by all RE/Bi2WO6.

关键词： Rare earth Bi2WO6 Rhodamine B Hole oxidation 4f orbit

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Exogenous rare earth element-yttrium deteriorated soil microbial community structure

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Journal of Rare Earths 2018年第4期36卷 430-439页

作者： Caigui luo Yangwu Deng Jian Liang Sipin Zhu Zhenya Wei Xiaobin Guo xianping luo Faculty of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China National Engineering Research Center for Ionic Rare Earth Ganzhou 341000China Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution Control Canzhou 341000China

In this study, we selected yttrium as the representative of REEs to investigate the impacts of exogenous yttrium on soil physicochemical properties and microbiota. The results showed that exogenous yttrium has no significant effect on soil physical properties but a significantly negative impact on soil chemical properties. The results of high-throughput sequencing demonstrate that exogenous yttrium significantly decreases the number of OTUs, ACE, Chao 1, and Shannon indices while increases the Simpson index（P 〈 0.05）, indicating the low soil microbial diversity. The relative abundances of soil microbes are significantly changed at phylum and genus level. Principal component analysis（PCA） showed the significant difference of microbial community between yttrium treatments（YCl_3-250 and YCl_3-500） and non-yttrium treatment（CK） and the similarity of that between YCl_3-250 and YCI_3-500. Proteobacteria and Bacteroidetes are found to be the most tolerant phyla to exogenous yttrium while Verrucomicrobia the most sensitive phylum. Redundancy analysis（RDA） results suggest that exogenous yttrium affects soil microbiota only through changing the soil chemical properties but not soil physical properties, and C/N ratio is the key environmental factor.

关键词： Soil physicochemical properties Soil microbial community High-throughput sequencing Rare earths

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Insights into the floatability between spodumene and albite from crystal chemistry standpoint

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International Journal of Mining Science and Technology 2022年第6期32卷 1329-1339页

作者： Hepeng Zhou Fanxin Xie Yongbing Zhang Boyuan Zhang Siqi Yang xianping luo Engineering Research Center for High-efficiency Development and Application Technology of Tungsten Resources(Jiangxi University of Science and Technology) Ministry of EducationGanzhou 341000China Jiangxi Province Key Laboratory of Mining and Metallurgy Environmental Pollution Control Jiangxi University of Science and TechnologyGanzhou 341000China

Spodumene is a silicate mineral rich in ***,the gangue mineral,albite has similar crystal chemical structure and composition to *** this work,the density functional theory(DFT)calculation was taken to research the floatability from the perspective of crystal *** contact angle test and reagent adsorption test were used to support the simulation *** addition,the weighted total density of broken bonds is proposed for the first time to judge the generation probability of cleavage *** DFT calculation results display that the Na and Al sites on the albite surface are the adsorption sites of water *** the water molecules only bond with Al atom on the surface of spodumene and each Al site can adsorb only one water ***,the wetting effect of water molecules on the albite surface is stronger than that of *** is consistent with the result of contact *** sodium oleate system,the oleic acid anion is adsorbed on the spodumene surface in form of a multicomponent ring while the albite is a single ***,oleic acid anion can be strongly adsorbed on the surface of spodumene and albite under *** adsorption strength of spodumene is higher than that of ***,on hydrated surface,the adsorption strength of oleic acid anion on mineral surface is greatly reduced due to the interaction between water molecules and metal site on mineral ***,spodumene and albite are hard to float without external activated ions in sodium oleate system.

关键词： Spodumene Albite Floatability Crystal chemistry DFT calculation

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Enhancing the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect with sodium dodecyl sulfate surfactant

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International Journal of Mining Science and Technology 2021年第6期31卷 995-1002页

作者： Yongbing Zhang Boyuan Zhang Siqi Yang Zhigang Zhong Hepeng Zhou xianping luo Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution Control Ganzhou 341000China Key Laboratory of Ionic Rare Earth Resources Development and Application Ministry of EducationGanzhou 341000China Faculty of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Ameliorating the problem of low leaching efficiency,long leaching period,and high agent consumption should be studied to efficiently exploit ion-absorbed rare earth ore *** this study,the surfactant sodium dodecyl sulfate(SDS) is used to enhance the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect for the first *** effects of surfactant concentration,leaching agent dosage,solution flow velocity,and solution pH on the leaching rate were explored,and the mechanism of SDS was *** the optimum conditions,the addition of a small amount of SDS(mass fraction0.04%) can increase the leaching rate by about 5%,shorten the leaching period,and reduce the consumption of the leaching *** significantly ameliorates the seepage effect of the ore body by reducing the surface tension of the leaching agent and ameliorating the wettability of the mineral *** effect is the main factor that improves the leaching ***(density functional theory) calculation results show that SDS can react with rare earth ions,which reduces the adsorption strength on clay mineral ***,rare earth ions are easily exchanged by ammonium ions,and mass transfer is enhanced.

关键词： Ion-absorbed rare earth ore Surfactant Sodium dodecyl sulfate Leaching Seepage effect Adsorption

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Pore structure characterization and seepage analysis of ionic rare earth orebodies based on computed tomography images

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International Journal of Mining Science and Technology 2022年第2期32卷 411-421页

作者： xianping luo Yongbing Zhang Hepeng Zhou Kunzhong He Boyuan Zhang Dongming Zhang Weijing Xiao National Innovation Center for Rare Earth Functional Material Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Ionic Rare Earth Resources Development and Application Ministry of EducationJiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution Control Jiangxi University of Science and TechnologyGanzhou 341000China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China

Pore network structure of ore body is a diffusion channel of leaching agent solution that exerts a significant influence on *** ore body structure,pore distribution,pore and throat size,and pore network characteristics of topsoil,weathered,and semiweathered layers of ionic rare earth ore in southern Jiangxi Province were explored in this *** effect of leaching operation on the pore structure was investigated,and main factors affecting the seepage were *** showed that the semiweathered layer presents a dense structure and a small number of unconnected *** of topsoil and weathered layers are mainly long and narrow column openings with some planar *** pore distribution and large size span were *** with the weathered layer,the topsoil layer demonstrates larger voids,smaller average pore volume and equivalent radius,and fewer coordination throats;however,the average equivalent radius of the throat in the topsoil layer is larger and largescale channels exist through ore body ***,permeability of the topsoil layer is significantly higher than that of the weathered *** clay minerals migrate easily and the occurrence of silting in the small porosity blocks the throat and significantly decreases the permeability of the ore body in the leaching *** equivalent radius of the throat is the key to the *** the migration of fine particles is an effective measure to protect the throat and shorten the leaching period.

关键词： Ionic rare earth ore CT scanning 3D visualization Pore characteristics Permeability

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Advancing green flotation:Separation of Cu-Pb minerals through the application of eco-friendly organic double reaction group depressant

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International Journal of Mining Science and Technology 2024年第11期34卷 1599-1611页

作者： Siqi Yang xianping luo Rufeng Chen Louyan Shen Xun Fan Jiancheng Miao Xuekun Tang Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Efficient Exploitation and Utilization of Rare Metal Resources of Jiangxi Province Jiangxi University of Science and TechnologyGanzhou 341000China Nanjing Yinmao Lead-Zinc Mining Co. Ltd.Nanjing 210046China China Nerin Engineering Co. Ltd.Nanchang 330031China

Achieving efficient flotation separation of chalcopyrite and galena while maintaining environmental friendliness poses a *** study utilized the environmentally friendly copolymer acrylic acid-2-acrylamide-2-methylpropanesulfonic acid(AA/AMPS)as a depressant to separate chalcopyrite and *** tests revealed a significant reduction in galena recovery when AA/AMPS was employed,with minimal impact observed on *** artificial mixed ore flotation,AA/AMPS was found to enhance the efficiency of copper and lead separation,surpassing K_(2)Cr_(2)O_(7).Furthermore,the effectiveness of AA/AMPS in facilitating copper-lead separation has been validated in practical ore *** presence of AA/AMPS inhibited the adsorption of SBX onto galena,as confirmed by zeta potential and contact angle ***,the adsorption on chalcopyrite remained *** analyses using Atomic Force Microscope,X-ray photoelectron spectroscopy,and Density Functional Theory,a robust chemical interaction between the reactive groups in AA/AMPS and Pb sites on galena was uncovered,resulting in the formation of a hydrophilic polymer *** layer impedes SBX adsorption and reduces galena's *** contrast,no significant chemical adsorption was observed between AA/AMPS and Cu and Fe sites on chalcopyrite,preserving its SBX ***,AA/AMPS shows promise in replacing traditional depressants for Cu-Pb sulfide ore separation,enhancing environmental sustainability.

关键词： AA/AMPS Double reactive group Actual ore Selective depressant Galena

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常压酸浸法从硅镍矿中提取镍的研究

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稀有金属 2009年第4期33卷 582-585页

作者：车小奎邱沙罗仙平东北大学资源与土木工程学院辽宁沈阳110004 北京有色金属研究总院矿物资源与冶金材料研究所北京100088 北京科技大学土木与环境工程学院北京100083

中国南方某硅镍矿矿石矿物组成复杂,多种矿物(包括脉石矿物)含镍,且粒度很细,不能用机械选矿方法予以富集,只能采用化学选矿或冶炼富集的方法来提取镍。本研究采用常压酸浸法对该硅镍矿进行了浸出试验研究,原矿在磨矿细度-0.074 mm占78.... 详细信息

中国南方某硅镍矿矿石矿物组成复杂,多种矿物(包括脉石矿物)含镍,且粒度很细,不能用机械选矿方法予以富集,只能采用化学选矿或冶炼富集的方法来提取镍。本研究采用常压酸浸法对该硅镍矿进行了浸出试验研究,原矿在磨矿细度-0.074 mm占78.60%、液固比6∶1、硫酸浓度2.60 mol.L-1、搅拌强度170 ***-1、60℃条件下浸出6 h,浸出贵液中镍的浸出率为86%左右,浸渣中含镍0.12%左右,取得了较好的浸出指标,浸出液经3次浸取后,Ni2+离子浓度已达到沉镍要求。

关键词：硅镍矿常压酸浸法镍

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加水一体化合成钨尾矿基地聚合物研究

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矿产综合利用 2019年第1期40卷 83-87页

作者：李涛罗仙平钱有军中钢集团安徽天源科技股份有限公司安徽马鞍山243000 江西理工大学工程研究院江西赣州341000

以低活性钨尾矿为主要原料制备高活性的地聚合物反应前驱物,在直接加水条件下合成地聚合物试样。结果表明,助剂种类对加水一体化合成的地聚合物的抗压强度影响显著,地聚合物反应前驱物制备的最佳试验条件为:助剂种类为氢氧化钾,煅烧时间... 详细信息

以低活性钨尾矿为主要原料制备高活性的地聚合物反应前驱物,在直接加水条件下合成地聚合物试样。结果表明,助剂种类对加水一体化合成的地聚合物的抗压强度影响显著,地聚合物反应前驱物制备的最佳试验条件为:助剂种类为氢氧化钾,煅烧时间1 h,粉末硅酸钠掺量15%,在此条件下加水一体化合成的地聚合物7 d抗压强度达18.78 MPa。此外,研究认为高温湿气养护不利于该条件下所制成的地聚合物强度发展。

关键词：地聚合物反应前驱物加水一体化抗压强度

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离子型稀土矿渗流溶浸行为研究

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稀有金属 2018年第5期42卷 531-536页

作者：周贺鹏胡洁罗仙平钟志刚江西理工大学资源与环境工程学院江西赣州341000 江西省矿业工程重点实验室江西赣州341000

离子型稀土矿性质复杂,当前所采用的原地溶浸工艺适应性不强、影响因素较多,为揭示离子型稀土矿原地溶浸过程影响机制,探寻溶浸过程优化调控方法,本文以江西龙南足洞风化离子型稀土矿为研究对象,采用室内柱式溶浸法模拟原地溶浸工艺过程... 详细信息

离子型稀土矿性质复杂,当前所采用的原地溶浸工艺适应性不强、影响因素较多,为揭示离子型稀土矿原地溶浸过程影响机制,探寻溶浸过程优化调控方法,本文以江西龙南足洞风化离子型稀土矿为研究对象,采用室内柱式溶浸法模拟原地溶浸工艺过程,开展离子型稀土矿溶浸过程影响规律研究,考察浸出过程各工艺因素对离子型稀土矿浸出效率的影响以及稀土原矿浸出前后的物质变化。研究结果表明,调控离子型稀土矿浸出过程原矿含水量4%、矿层高度43 mm,浸出剂浓度4%、浸出剂溶液p H值5.0、浸取过程固液比1.0∶0.8、浸取剂流速5 ml·min^-1为最佳浸出条件参数,在原矿REO总量为0.078%的情况下,可获得浸出率为92.87%的稀土母液,母液中稀土平均浓度为1.73g·L^-1,效果良好。稀土离子在浸出过程中与浸出剂的电解质NH＋4发生了离子交换反应,稀土离子被交换浸出,而阳离子电解质NH＋4则保留在浸渣中,整个浸出过程未生成其他新的物质,没有改变离子型稀土矿原有的晶型结构,不会影响稀土离子的渗流溶浸,有利于离子型稀土矿的绿色高效提取。

关键词：离子型稀土矿柱式淋浸离子交换过程调控

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