Physicochemical Problems of Mineral Processing最新文献

Studying on mineralogical and petrological characteristics of Gara Djebilet oolitic iron ore, Tindouf (Algeria) 研究廷杜夫（阿尔及利亚）Gara Djebilet 鲕状铁矿的矿物学和岩石学特征

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2024-01-09 DOI: 10.37190/ppmp/178382

Nassima Chebel, Djamel Nettour, Mohamed Chettibi, Rachid Chaib, H. Khoshdast, Ahmad Hassanzadeh

{"title":"Studying on mineralogical and petrological characteristics of Gara Djebilet oolitic iron ore, Tindouf (Algeria)","authors":"Nassima Chebel, Djamel Nettour, Mohamed Chettibi, Rachid Chaib, H. Khoshdast, Ahmad Hassanzadeh","doi":"10.37190/ppmp/178382","DOIUrl":"https://doi.org/10.37190/ppmp/178382","url":null,"abstract":"Demand for iron ore worldwide has been steadily increasing which leads to the extraction of iron ore deposits with more complex mineralogies and higher levels of silicon and phosphorus impurities. This is the case in Algeria with the iron ore deposit of Gara Djebilet, Tindouf; where it has recently been exploited to ensure the sufficiency of iron ore required to produce iron and steel products. This deposit has remained unexploited for several decades due to inadequate knowledge of its mineralogy, treatment, and economic assessments. \u0000The aim of this study is to find out the microstructure, chemical composition, and mineralogical distribution of valuable minerals and impurities, to understand the efficient processing methods for this specific iron ore. The characterization of representative ironstone samples taken from the studied area was carried out using optical microscopy, X-ray fluorescence spectrometer (XRF), petrographic microscope, X-ray diffractometer (XRD), and scanning electron microscope (SEM) coupled with energy dispersive X-ray spectroscopy (EDS).\u0000The results of the mineralogical analyses confirmed that it is an oolitic fine-grained ore consisting of gangue minerals principally composed of quartz, apatite, and iron-rich concentric cored structures. Chemical analyses of the ore indicate that it contains 56.58 wt% Fe with 7.98 wt% SiO2, 7.09 wt% Al2O3, and minor amounts of P2O5, CaO, MgO, and TiO2 compounds. The phosphorus associated was present in both ooids and groundmass, indicating that the ore has a complex texture with very rich and diverse mineralogy. For that, two potential scenarios were proposed for processing of the studied iron ore.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"45 41","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139442294","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

Optimization of flotation conditions in the beneficiation of PGMs tailings 优化 PGM 尾矿选矿中的浮选条件

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-16 DOI: 10.37190/ppmp/176859

Daphney Hlotse, Richard Mbaya, M. Shongwe

{"title":"Optimization of flotation conditions in the beneficiation of PGMs tailings","authors":"Daphney Hlotse, Richard Mbaya, M. Shongwe","doi":"10.37190/ppmp/176859","DOIUrl":"https://doi.org/10.37190/ppmp/176859","url":null,"abstract":"For several years, mining waste has shown a negative impact on both the environment and human health. The mining industry remains the backbone of the economic growth. Different technologies have been implemented to beneficiate and recover platinum group metals from tailings. The recycling of tailings has been a point of research interest due to their extensive applications. Flotation has been the primary process of upgrading and recovering PGMs. The focus of this study was to optimize flotation conditions in the beneficiation of PGMs for particular small-scale mine tailings. This was done to obtain the most favourable conditions for the small-scale mine tailings to improve operating conditions of specific particle sizes. PGMs tailings obtained from a small-scale mine were characterized using XRD, XRF, SEM/EDS, and ICP – OES to understand the properties of the tailings prior to mineral processing. Flotation batch tests were conducted. The results showed that the chosen particle size was 75 µm, and the favorable reagent dosages were 150 g/Mg and 100 g/Mg for SIBX (collector) and Starch(depressant), respectively. At favourable conditions, the recovery was 65.75% (Pt = 70.38%, Pd = 59.33%, Ru = 34.56%), and the grade was 31.46 g/Mg (Pt = 21.43 g/Mg, Pd = 9.62 g/Mg, Ru = 0.41 g/Mg). It can be concluded that all the flotation parameters are related; lower particle sizes yield high recoveries and better grades due to the exposure of the particle surface to the reagents responsible for the flotation of the PGMs. It was observed that the high collector dosages produce high recoveries with low grades of PGMs. High depressant dosages produce low recoveries with high grades of PGMs. The relationship between the collector and the depressant is of essential importance in the flotation process.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"2 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138968021","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

Optimizing the removal of iron oxide from Egyptian feldspar ore 优化去除埃及长石矿石中的氧化铁

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI: 10.37190/ppmp/176420

K. Yassin, A. Elbendari, El-Sayed Hassan

{"title":"Optimizing the removal of iron oxide from Egyptian feldspar ore","authors":"K. Yassin, A. Elbendari, El-Sayed Hassan","doi":"10.37190/ppmp/176420","DOIUrl":"https://doi.org/10.37190/ppmp/176420","url":null,"abstract":"The demand for feldspar as a raw material for various industrial applications continuously increases. Feldspar is a primary raw material in manufacturing ceramics, glass, fillers, welding electrodes, and enamel. Feldspar is often associated with iron oxide, which decreases its economic value and hinders its industrial application. The present work aimed at reducing iron oxide content in Egyptian feldspar ore from the Wadi Zerabi locality. Ball milling was used for preparing feldspar feed of size -250+45µm. Carpco dry high-intensity magnetic separation followed by acid leaching processes were carried out in order to decrease the iron contamination and increase the feldspar content. A Box-Behnken statistical design was used to optimize the magnetic separation results. From a feldspar feed containing 1.40% Fe2O3, a non-magnetic concentrate of 0.25% Fe2O3 was obtained. The Fe2O3 removal reached up to 82% with a high yield as the % weight of non-magnetic feldspar reached up to 97.5%. The leaching process further reduced the iron oxide content down to 0.19 %. Also, the feldspar whiteness was improved from 65.17% in the original ore to 85.60% in the leached product.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"3 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138585556","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

Synergistic mechanism of dodecylamine/octanol mixtures enhancing lepidolite flotation from the self-aggregation behaviors at the air/liquid interface 从空气/液体界面的自聚集行为看十二胺/辛醇混合物促进鳞片石浮选的协同机制

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI: 10.37190/ppmp/176510

Yang Bai, Mengxu Xu, Weixiang Wen, Shifei Zhu, Weichen Mo, Pingke Yan

{"title":"Synergistic mechanism of dodecylamine/octanol mixtures enhancing lepidolite flotation from the self-aggregation behaviors at the air/liquid interface","authors":"Yang Bai, Mengxu Xu, Weixiang Wen, Shifei Zhu, Weichen Mo, Pingke Yan","doi":"10.37190/ppmp/176510","DOIUrl":"https://doi.org/10.37190/ppmp/176510","url":null,"abstract":"Surface tension measurements and molecular dynamics (MD) simulations were used to explore the flotation foam properties and self-aggregation behaviors of dodecylamine (DDA)/octanol (OCT) mixtures formed with different mole ratios at the air/liquid interface. Based on the surface and thermodynamic parameters, the DDA/OCT mixtures exhibited greater interfacial activities and adsorption capacities than their individual components. The MD simulations showed that DDA and OCT were aggregated through hydrogen bonding, coulombic forces and hydrophobic association. OCT was inserted into the DDA adsorption layer, causing the alkyl chains of both DDA and OCT to extend from water to air at varying heights and angles. The addition of OCT improved the hydration of the amino groups and reduced the overall number of hydrogen bonds. The stability of the flotation foam decreased, and the high viscosity and difficult defoaming of the DDA flotation foam were significantly improved. When the DDA/OCT mole ratio was 2:1, the included angle formed between the alkyl chains and the interface was maximized, leading to enhanced compatibility among the alkyl chains, and the hydrogen bond energy was relatively large, which showed a strong synergistic effect. The MD simulation findings were consistent with the results obtained from the lepidolite flotation and surface tension experiments conducted in this study; our results could provide a theoretical foundation for the selection of superior mixed collectors and frothers.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"9 11","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138585532","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

Biochars from wood biomass as effective methylene blue adsorbents 从木质生物质中提取生物炭作为有效的亚甲基蓝吸附剂

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI: 10.37190/ppmp/176509

B. Charmas, Barbara Wawrzaszek, K. Jedynak

{"title":"Biochars from wood biomass as effective methylene blue adsorbents","authors":"B. Charmas, Barbara Wawrzaszek, K. Jedynak","doi":"10.37190/ppmp/176509","DOIUrl":"https://doi.org/10.37190/ppmp/176509","url":null,"abstract":"Forest waste is a significant ecological and economic problem, requiring effective solutions that will not only reduce its quantity but also contribute to the protection of the natural environment. This research paper focuses on the use of sawdust from mixed trees, as one of the main forest wastes, for production of biochars characterized by adsorption properties. Sawdust, a by-product of the wood industry, has a porous structure, which makes it an attractive precursor to biochar. Using pyrolysis technology and hydrothermal activation under various conditions, sawdust was transformed into biochars with a developed specific surface area. The studies proved that the parameters of the pyrolysis process have a significant impact on the structural, surface and adsorption properties of biochars. The materials were characterized based on the results of N2 adsorption, scanning electron microscopy SEM/EDS, thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Raman spectroscopy. The surface characterization was made using the Boehm titration and pHpzc determination. The sorption capacity of methylene blue (MB) was studied. It was stated, that the obtained materials were characterized by a large specific surface area (227.5 – 1019 m2/g), the micro/mesoporous structure and the large pores volume (0.106 – 0.784 cm3/g). The surface oxygen functionalities allowed for large adsorption of MB. The adsorption process follows the Langmuir theory (qm,cal from 357.1 to 434.8 mg/g) and can be described using the kinetic pseudo-second-order model (R2 = 0.99). The obtained biochars showed high adsorption capacity of methylene blue impurities which indicates their significant potential for use in water purification.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"5 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138585245","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

Utilization of polymeric binders to agglomerate oxidized copper ore 利用聚合物粘合剂聚结氧化铜矿石

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI: 10.37190/ppmp/176682

Mohammad Hasan Golpayegani, Kimia Kiaei

引用次数: 0

Flotation of copper-bearing shale at different pH values of solutions and sodium chloride concentrations 在不同 pH 值溶液和氯化钠浓度下浮选含铜页岩

IF 1.5 4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-03 DOI: 10.37190/ppmp/176242

Tomasz Andrzej Ratajczak, Jakub Sajewicz

引用次数: 0

The effect of Al(III) and Fe(III) ions on the flotation behavior of k-feldspar with sodium oleate as the collector Al(III)和Fe(III)离子对油酸钠为捕收剂的钾长石浮选行为的影响

4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-11-01 DOI: 10.37190/ppmp/174724

Chen Yi, Jikui Zhou, Guichun He, Hongxi Hu, Chao Liu, Jiping Yang, Xianjin Lyu

引用次数: 0

Application of Diethylenetriaminepenta pentasodium salt as an eco-friendly depressant to effectively improve the flotation separation of scheelite and calcite 应用二乙烯三胺五钠盐作为环保型抑制剂，有效改善白钨和方解石的浮选分离

4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-11-01 DOI: 10.37190/ppmp/174718

Hepeng Zhou, Handan Wu, Jiangfeng Guo, Xuekun Tang, Wen Huang, Xianping Luo

{"title":"Application of Diethylenetriaminepenta pentasodium salt as an eco-friendly depressant to effectively improve the flotation separation of scheelite and calcite","authors":"Hepeng Zhou, Handan Wu, Jiangfeng Guo, Xuekun Tang, Wen Huang, Xianping Luo","doi":"10.37190/ppmp/174718","DOIUrl":"https://doi.org/10.37190/ppmp/174718","url":null,"abstract":"Diethylenetriaminepenta (methylene-phosphonic acid) pentasodium salt (DTPMPA), an eco-friendly reagent, was tried for the first time as a depressant for flotation separation of scheelite from calcite. Micro-flotation tests show that DTPMPA can selectively depress the floatability of calcite. In contrast, DTPMPA barely affects the flotation behavior of scheelite. Based on the selective depress effect, floatation separation of scheelite and calcite can be effectively achieved by using DTPMPA as depressant in artificially mixed minerals flotation tests. Based on a series of measurements, it found the surface of calcite was positively charged due to the existence of Ca ion site, which can be chelated with -PO3H- functional group on the surface of DTPMPA. In the flotation process, DTPMPA can be chemically absorbed on the surface of calcite to inhibit further collector adsorption. On contrast, little DTPMPA was adsorbed on the surface of scheelite due to the spatial site resistance and electrostatic repulsion induced by surface WO42+. All in all, these results exhibit DTPMPA has excellent selective depression ability on calcite, which can be potentially applied in the actual scheelite flotation process.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135325820","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

Study on the mechanism of the difference in flotation performance between fine-grained crystalline SiO2 and amorphous SiO2 细晶SiO2和非晶SiO2

4区工程技术

Physicochemical Problems of Mineral Processing Pub Date : 2023-10-27 DOI: 10.37190/ppmp/174567

Saisai Ma, Jie Li, Yonglun Wang, Bangqi Wei

{"title":"Study on the mechanism of the difference in flotation performance between fine-grained crystalline SiO2 and amorphous SiO2","authors":"Saisai Ma, Jie Li, Yonglun Wang, Bangqi Wei","doi":"10.37190/ppmp/174567","DOIUrl":"https://doi.org/10.37190/ppmp/174567","url":null,"abstract":"Numerous minerals found in nature contain silica, including quartz, cristobalite, opal, etc. They have the same chemical composition but different crystal structures, and this phenomenon is called “polymorphism” in mineralogy. For these polymorphic and multi-like minerals, in the flotation process, will it directly or indirectly affect the flotation effect. Based on this, this study mainly explores the difference between crystalline SiO2 and amorphous SiO2 in flotation. In this study, two crystal forms of SiO2 were subjected to flotation and adsorption capacity tests. FTIR, other test techniques, the chemical calculation of the flotation solution, and the theoretical calculation of the DLVO can all be used to provide an explanation. Finally, in the flotation experiment, the feedbacks of the two minerals to the change of the pH value of the pulp and the change of the concentration of the reagent are different. Through the comprehensive analysis of the adsorption capacity test and semi-quantitative calculation of the infrared spectrum, the adsorption capacity of crystalline SiO2 to drugs is about 23% higher than amorphous SiO2. Furthermore, during the flotation process, the amorphous SiO2 particles will agglomerate together and entrain into the foam through, resulting in concentrate pollution. So amorphous SiO2 will undoubtedly increase the difficulty of flotation.","PeriodicalId":49137,"journal":{"name":"Physicochemical Problems of Mineral Processing","volume":"6 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317975","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