Physicochemical Problems of Mineral Processing最新文献_第10页

Simulation study on clogging of suspended particles in in-situ leaching of uranium at different concentrations and flow velocity 不同浓度和流速下铀原地浸出悬浮颗粒堵塞的模拟研究

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-20 DOI: 10.37190/ppmp/162150

Chunze Zhou, Hongqiang Wang, Tongpan Wu, E-ming Hu, Zhiwu Lei, Qing-liang Wang

{"title":"Simulation study on clogging of suspended particles in in-situ leaching of uranium at different concentrations and flow velocity","authors":"Chunze Zhou, Hongqiang Wang, Tongpan Wu, E-ming Hu, Zhiwu Lei, Qing-liang Wang","doi":"10.37190/ppmp/162150","DOIUrl":"https://doi.org/10.37190/ppmp/162150","url":null,"abstract":"Clogging problem has become one of the key problems restricting the mining efficiency of in-situ leaching of uranium, and the related research on the law and mechanism of physical clogging has not been reported. In order to identify and understand the complicated law and mechanism, experimental device is established to simulate the physical clogging caused by suspended particles in the uranium process, the physical clogging law and mechanism under different concentrations and velocity of flow are studied. The experimental results show that with the concentration of suspended particles increasing from 100, 200, 300 to 400 mg/L, the permeability of porous media gradually decreases, and the clogging phenomenon becomes more and more obvious. When the size of suspended particles is small and the velocity is 15 mL/min, the porous medium will not appear clogging, while the velocity is 25mL/min, the whole porous medium will slowly appear internal deposition clogging. When the size of suspended solids is larger and the flow rate is 9, 12, 15mL/min, the higher the velocity, the faster the clogging will be, and backwash can alleviate the surface clogging but cannot change the final clogging result. According to the experiment and actual situation, the physical clogging in in-situ leaching of uranium is mainly surface clogging and filter clogging.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45359243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative study on removal of metallurgical silicon impurities by different acid leaching methods 不同酸浸法去除冶金硅杂质的比较研究

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-17 DOI: 10.37190/ppmp/162331

Zijie Gao, D. Luo

引用次数: 0

Exploring the effect of sodium hexametaphosphate in coal slime flotation 探讨六偏磷酸钠在煤泥浮选中的作用

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-15 DOI: 10.37190/ppmp/162075

Tian Lu, Z. Deng, Yun Tang, Hai-xiang Tang

引用次数: 0

Mechanism of Ca2+/Fe3+-based synergistic activation of quartz 石英的Ca2+/Fe3+协同活化机理

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-15 DOI: 10.37190/ppmp/162262

Rong-Ming Liu, Zhan-feng Yang, Jieying Li, Qiang Li, Zhenjiang Wang, X. Luo

{"title":"Mechanism of Ca2+/Fe3+-based synergistic activation of quartz","authors":"Rong-Ming Liu, Zhan-feng Yang, Jieying Li, Qiang Li, Zhenjiang Wang, X. Luo","doi":"10.37190/ppmp/162262","DOIUrl":"https://doi.org/10.37190/ppmp/162262","url":null,"abstract":"Although the flotation behaviors of iron concentrate and quartz are significantly different, quartz is the primary factor that affects the quality of iron concentrate. The flotation mechanism of quartz in the presence of mixed cationic Ca2+/Fe3+-co-activated SDS catcher was studied by conducting flotation tests with pure quartz mineral. The solution chemical calculation method, zeta potential calculation method, Fourier transform infrared (FT-IR) spectroscopy technique, X-ray photoelectron spectroscopy (XPS) technique, and other techniques were used to conduct the studies. The results showed that the maximum Ca2+/Fe3+-based synergistic activation of the flotation recovery process could be achieved in a certain range of pH values when three different activators were added sequentially. Analysis of the zeta potential values revealed that the Ca2+/Fe3+-activated quartz surface improved the extent of positive electricity generated and enhanced the SDS adsorption ability of the quartz surface. Results obtained using the FT-IR technique revealed that Ca2+/Fe3+ exerted a synergistic effect, and the adsorption process exploited the single oxygen bond interactions in the monovalent hydroxyl complex Ca(OH)+ and the double oxygen bond interactions in the Fe(OH)3 precipitates. Results obtained using the XPS technique revealed that the synergistic effect exerted by Ca2+/Fe3+ was significantly stronger than that exerted by Ca2+ or Fe3+ alone. The stable Fe-based six-membered chelate ring was formed on the surface of quartz when Fe3+ was the activator, and the chain-like Ca-based complex was formed when Ca2+ was the activator. The adsorption process on the surface of quartz proceeded following chemical as well as physical adsorption pathways. The results revealed that Ca(OH)+ and Fe(OH)3 played prominent roles during the activation of quartz surfaces in the presence of Ca2+/Fe3+.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49008066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface 脂肪酸和煤油在氟磷灰石(001)表面共吸附的DFT研究

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-05 DOI: 10.37190/ppmp/161890

W. Du, Xian-bo Li, Q. Zhang

{"title":"DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface","authors":"W. Du, Xian-bo Li, Q. Zhang","doi":"10.37190/ppmp/161890","DOIUrl":"https://doi.org/10.37190/ppmp/161890","url":null,"abstract":"The adsorption of fatty acid, kerosene and fatty acid-kerosene on fluorapatite (001) surface were investigated by density functional theory (DFT) calculations. The results showed that the single fatty acid could form stable chemisorption on fluorapatite (001) surface by the O of fatty acids bonding with Ca1 site. The single kerosene could not be stably adsorbed on fluorapatite (001) surface because the H of kerosene did not form hydrogen bond with the O of PO43- on (001) surface (Osurf). For the coadsorption conformation, the chemisorption of fatty acid-kerosene on fluorapatite (001) surface was contributed by the interaction between O of fatty acids and Ca1, the H of kerosene did not bond with the Osurf, but the carbon chain length of kerosene has a large influence on the coadsorption. Compared with the coadsorption of fatty acid-decane, the adsorption of butyric acid-tetradecane and octanoic acid-tetradecane on fluorapatite (001) surface have greater adsorption energies and overlapping region of DOS between O 2p and Ca 4d, indicating that there is a synergistic effect between fatty acid and tetradecane. Meanwhile, the collaborative effects exist between the molecules of fatty acids. The interpenetrating adsorption of fatty acid and kerosene on the fluorapatite surface could improve the adsorption strength and density. The flotation test further confirmed that the single kerosene could not collect fluorapatite, but it could be collected by the single fatty acid. Besides, the synergistic effect between fatty acid and kerosene could increase the flotation recovery of fluorapatite.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45354672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Theoretical and experimental substantiation of obtaining an alloy from flotation tailings of lead-zinc sulfide ore 从硫化铅锌矿浮选尾矿中获得合金的理论和实验证明

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-03-03 DOI: 10.37190/ppmp/161853

V. Shevko, Baktygul Makhanbetova, D. Aitkulov

{"title":"Theoretical and experimental substantiation of obtaining an alloy from flotation tailings of lead-zinc sulfide ore","authors":"V. Shevko, Baktygul Makhanbetova, D. Aitkulov","doi":"10.37190/ppmp/161853","DOIUrl":"https://doi.org/10.37190/ppmp/161853","url":null,"abstract":"The article presents the results of thermodynamic and experimental research on the processing of cinders from the firing of Shalkiya deposit lead-zinc ore tailings with the production of siliceous ferroalloys. Thermodynamic modeling carried out using the HSC-6.0 complex based on the Gibbs energy minimization principle showed that the interaction occur with the formation of CaSiO3, FeSiO3, MgSiO3, K2OˑSiO2, FeSi, Fe5Si3, SiC, Fe3Si, Si, SiOg, FeSi2.33, FeSi2, CaSi, Zn, Zng, Pb, Pbg; an increase in the iron amount in the system allows increasing the silicon extraction degree into the alloy at 1800°C to 76%, to reduce the silicon concentration in the alloy from 41 to 24%; FS25 grade ferrosilicon formed at 1752-1867°C in the presence of 88-100% iron, and FS45 grade ferrosilicon – at 1863-1900°C and 20-22.4% iron. Electric melting of a charge containing 63.83% calcined cinder of tailings, 19.15% coke, and 17.02% steel chips allows to obtain FS45 grade ferrosilicon (44.1-43.9% Si) with the extraction of 69.7% silicon and sublimates with the content of 32-38% zinc and lead. The results obtained allow complex processing of lead-zinc sulfide ore tailings with the extraction of not only non-ferrous metals, but also silicon in the ferroalloy.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43832792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Role of ammonium phosphate in improving the physical characteristics of malachite sulfidation flotation 磷酸铵在改善孔雀石硫化浮选物理特性中的作用

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-02-26 DOI: 10.37190/ppmp/161510

Ayman Ibrahim, X. Jia, Jinpeng Cai, Chao Su, Xingcai Yu, Rong Peng, Qifeng Zheng, Peilun Shen, Dian-wen Liu

{"title":"Role of ammonium phosphate in improving the physical characteristics of malachite sulfidation flotation","authors":"Ayman Ibrahim, X. Jia, Jinpeng Cai, Chao Su, Xingcai Yu, Rong Peng, Qifeng Zheng, Peilun Shen, Dian-wen Liu","doi":"10.37190/ppmp/161510","DOIUrl":"https://doi.org/10.37190/ppmp/161510","url":null,"abstract":"In this study, ammonium phosphate ((NH4)3PO4) was employed to realize improvement by modifying the physical characteristics of the malachite surface, ensuring sustainable flotation throughout the flotation operations, and enhancing the flotation process to be more stable. Furthermore, various techniques, including X−ray photoelectron spectroscopy, were intensely used to investigate the configuration and physico-chemical surface characteristics through micro-flotation experiments, contact angle and zeta potential measurements, and XRD, ToF−SIMS, EPMA, and FTIR spectrum analyses. The FTIR findings showed that new characteristic peaks of −C(=S)−N.H. groups formed and adsorbed on the surfaces of malachite at 1636 cm-1. The −CH2 groups throughout the flotation process, further promoted the attachment of the CH3 ligand to the Cu2+ ion, and the XPS analysis confirmed this. Consequently, it can be concluded that (NH4)3PO4 played a substantial part in the improved recovery rate, as demonstrated and confirmed by the methods carried out in this study. Thus, it was used to modify the physical properties surface before adding Na2S to efficiently enhance malachite floatability and reduce the loss rate of malachite. Regarding the alterations in the physical characteristics which occurred to the malachite surface, and as a consequence of increasing the recovery results of flotation, the malachite sample treated initially with (NH4)3PO4 exhibited micro flotation results with a considerably greater flotation recovery than malachite treated initially with only Na2S ions.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41664059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel nanofibers composite based Clay: synthesis, characterization and intrinsic properties 新型纳米纤维复合粘土的合成、表征及特性

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-02-26 DOI: 10.37190/ppmp/161679

Youssef El Omari, B. Tbib, A. Abdelhafid, Kbiri Zakaria, E. Khalil

引用次数: 0

Mineralogical characteristic and beneficiation evaluation of rare earth carbonate wall rock 稀土碳酸盐岩围岩的矿物学特征及选矿评价

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-02-17 DOI: 10.37190/ppmp/161300

Chunqing Gao, Guoying Yan, Hailiang Wang, Hongzhen Luo, Lin Zhang, Hanxu Yang, Jian Xu

{"title":"Mineralogical characteristic and beneficiation evaluation of rare earth carbonate wall rock","authors":"Chunqing Gao, Guoying Yan, Hailiang Wang, Hongzhen Luo, Lin Zhang, Hanxu Yang, Jian Xu","doi":"10.37190/ppmp/161300","DOIUrl":"https://doi.org/10.37190/ppmp/161300","url":null,"abstract":"In order to rationalize the development and utilization of the wall rock discarded during rare earth mining, chemical analysis, inductively coupled plasma-atomic emission spectroscopy, X-ray diffraction analysis, artificial panning, optical microscope analysis, mineral liberation analysis and energy-dispersive spectroscopy were used to study the process mineralogy of the wall rock. The results show that the main useful elements in the rare earth wall rock were iron, light rare earth elements, fluorine and niobium. Iron was mainly occurrence as magnetic iron in magnetite, rare earth elements in bastnaesite and monazite, fluorine as a independent mineral in fluorite and niobium in columbite. The main useful minerals were finely disseminated, with magnetite (48.16%), bastnaesite (49.04%), monazite (42.18%), fluorite (39.30%) and columbite (63.26%) distributed in -0.030 mm particle size. The useful minerals were evaluated separately for beneficiation based on the process mineralogical characteristics of the rare earth wall rock, and the results showed that magnetite, rare earth and fluorite resources could be effectively recovered using magnetic separation, flotation, gravity concentration and leaching enrichment methods. The sequential recovery of iron, rare earth, fluorine and niobium elements produces iron concentrate (65.40% TFe at recovery of 38.03%), rare earth concentrate (50.66% REE at recovery of 62.73%), fluorite concentrate (95.23% CaF2 at recovery of 40.34%) and niobium iron ore concentrate (1.63% Nb2O5 at recovery of 5.56%). This study provides recommendations for the rational development and utilization of rare earth wall rock and provides reasonable levels of recovery predictions.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42870093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Counterion effects on the alkali dissolution mechanism of quartz 反离子对石英碱溶机理的影响

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-02-01 DOI: 10.37190/ppmp/160038

Yuangen Yao, Yun Tang, Yong Yang, Guoxiang Li, Bo Wu, Wendan Dai

{"title":"Counterion effects on the alkali dissolution mechanism of quartz","authors":"Yuangen Yao, Yun Tang, Yong Yang, Guoxiang Li, Bo Wu, Wendan Dai","doi":"10.37190/ppmp/160038","DOIUrl":"https://doi.org/10.37190/ppmp/160038","url":null,"abstract":"In gold ore, quartz plays an important role in mineral formation by acting as the follower. Understanding counterion release, transport, and deposition in alkali solution is a prerequisite for evaluating the potential role of gold separate from quartz deposits in pretreatment. In this work, the aggregation, retention, and release of counterion in alkali solution media were investigated by kinetic research and pure mineral experiments, the correlation and mechanism of these processes were revealed by combining geochemical theory, interaction energy calculation, and quantum chemistry. The results showed that the retention and release of counterion were closely related to the dissolution and corrosion rate of quartz. The NH4+ and Fe2+ with higher mineral affinity reduced the quartz stability, and the dispersion stability and mobility of the quartz were greatly improved by an alkaline substance due to the enhancement of steric hindrance effects. Quantum chemical calculation results show that ammonium ion promotes the dissolution of quartz stronger than ferrous ion, which is mainly reflected in reducing the activation energy required for the formation of transition state (TS1), which can be verified by kinetic calculation. These findings provide essential insight into the extraction of gold coated by quartz as well as a vital reference for the experiment of gold-loaded quartz leaching in mineral processing.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43221081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0