International Journal of Mining Science and Technology最新文献_第9页

Uncovering the oxidation mechanism of sphalerite (ZnS) in the absence and presence of water: A first-principles investigation 揭示闪锌矿（ZnS）在无水和有水情况下的氧化机制：第一性原理研究

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2025-01-01 DOI: 10.1016/j.ijmst.2024.12.004

Yuanjia Luo, Wei Sun, Haisheng Han, Jian Peng, Feng Jiang

{"title":"Uncovering the oxidation mechanism of sphalerite (ZnS) in the absence and presence of water: A first-principles investigation","authors":"Yuanjia Luo, Wei Sun, Haisheng Han, Jian Peng, Feng Jiang","doi":"10.1016/j.ijmst.2024.12.004","DOIUrl":"10.1016/j.ijmst.2024.12.004","url":null,"abstract":"<div><div>Herein, a first-principles investigation was innovatively conducted to research the surface oxidation of ZnS-like sphalerite in the absence and presence of H<sub>2</sub>O. The findings showed that single O<sub>2</sub> was preferred to be dissociated adsorption on sphalerite surface by generating S<img>O and Zn<img>O bonds, and the S atom on the surface was the most energy-supported site for O<sub>2</sub> adsorption, on which a <img>Zn<img>O<img>S<img>O<img>Zn<img> structure will be formed. However, dissociated adsorption of single H<sub>2</sub>O will not happen. It was preferred to be adsorbed on the top Zn atom on sphalerite surface in molecular form through Zn<img>O bond. Besides, sphalerite oxidation can occur as if O<sub>2</sub> was present regardless of the presence of H<sub>2</sub>O, and when H<sub>2</sub>O and O<sub>2</sub> coexisted, the formation of sulfur oxide (SO<sub>2</sub>) needed a lower energy barrier and it was easier to form on sphalerite surface than that only O<sub>2</sub> existed. In the absence of H<sub>2</sub>O, when SO<sub>2</sub> was generated, further oxidation of which would form neutral zinc sulfate. In the presence of H<sub>2</sub>O, the formation of SO<sub>2</sub> on sphalerite surface was easier and the rate of further oxidation to form sulfate was also greater. Consequently, the occurrence of sphalerite oxidation was accelerated.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"35 1","pages":"Pages 149-157"},"PeriodicalIF":11.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic damage characteristics and control mechanism of rocks anchored by constant resistance and energy absorption material 恒阻吸能材料锚固岩石动力损伤特性及控制机理

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2025-01-01 DOI: 10.1016/j.ijmst.2024.12.005

Bei Jiang , Kunbo Wu , Qi Wang , Yetai Wang , Wenrui Wu , Yaoxia Feng , Yanbo Zhang

{"title":"Dynamic damage characteristics and control mechanism of rocks anchored by constant resistance and energy absorption material","authors":"Bei Jiang , Kunbo Wu , Qi Wang , Yetai Wang , Wenrui Wu , Yaoxia Feng , Yanbo Zhang","doi":"10.1016/j.ijmst.2024.12.005","DOIUrl":"10.1016/j.ijmst.2024.12.005","url":null,"abstract":"<div><div>With resource exploitation and engineering construction gradually going deeper, the surrounding rock dynamic disaster becomes frequent and violent. The anchorage support is a common control method of surrounding rock in underground engineering. To study the dynamic damage characteristics of anchored rock and the energy absorption control mechanism of dynamic disasters, a new type of constant resistance and energy absorption (CREA) material with high strength, high elongation and high energy absorption characteristics is developed. A contrast test of rockbursts in anchored rock with different support materials is conducted. The test results show that the surface damage rates and energy release degree of anchored rock with common bolt (CB) and CREA are lower than those of unanchored rock, respectively. The total energy, average energy and maximum energy released by CREA anchored rock are 30.9%, 94.3% and 84.4% lower than those of CB anchored rock. Compared with unanchored rock, the rockburst peak stress in the CREA anchored rock is increased by 39.9%, and the rockburst time is delayed by 53.2%. Based on the rockburst energy calculation model, the evolution law of rockburst peak stress and energy release is investigated. The control mechanism of CREA support units on rock dynamic failure is clarified.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"35 1","pages":"Pages 57-67"},"PeriodicalIF":11.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Yielding performance of compact yielding anchor cable in working state: Analytical theory and experimental evaluation of yielding resistance enhancement effect 密实屈服锚索在工作状态下的屈服性能：增强屈服抗力效果的分析理论与实验评价

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2025-01-01 DOI: 10.1016/j.ijmst.2024.12.008

Zhenyu Wang , Bo Wang , Xinxin Guo , Jinjin Li , Zhenwang Ma

{"title":"Yielding performance of compact yielding anchor cable in working state: Analytical theory and experimental evaluation of yielding resistance enhancement effect","authors":"Zhenyu Wang , Bo Wang , Xinxin Guo , Jinjin Li , Zhenwang Ma","doi":"10.1016/j.ijmst.2024.12.008","DOIUrl":"10.1016/j.ijmst.2024.12.008","url":null,"abstract":"<div><div>To elucidate the yielding performance of compact yielding anchor cables in working state, a yielding mechanical model incorporating extrusion friction and fastening rotation under confining pressure is constructed. The yielding resistance enhancement effect (<em>ω</em>) caused by working environment constraints is evaluated through multi-layer composite sleeve hole expansion analysis, forming a theoretical framework for calculating the working yielding force. Laboratory and in-situ pull-out tests are conducted to determine the yielding performance and validate the analytical theory. The main conclusions are: (1) Yielding force and energy-release capacity increase with <em>ω</em>, significantly outperforming the unconfined state. (2) In-situ tests under varying rockmass and geostress conditions (F1–F3) determine the yielding force increases to 183.4–290.1, 204.0–290.8, and 235.0–327.1 kN. (3) The slight deviation (–12.5% to 6.2%) between the theoretical and measured yielding force confirms that the analytical theory effectively describes the working yielding performance. (4) <em>ω</em> increases with higher geostress and improved rock mechanical properties, with initial geostress (<em>σ</em><sub>0</sub>) and elastic modulus of surrounding rock (<em>E</em><sub>3</sub>) identified as critical parameters.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"35 1","pages":"Pages 101-120"},"PeriodicalIF":11.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study and application of the influence of inclination angle on the cross-fusion mechanism of high gas thick coal seam 倾角影响下高瓦斯厚煤层交叉熔融机理的研究与应用

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2025-01-01 DOI: 10.1016/j.ijmst.2024.12.003

Pengxiang Zhao , Zechen Chang , Shugang Li , Risheng Zhuo , Yongyong Jia , Qiudong Shao , Wen Lei

{"title":"Study and application of the influence of inclination angle on the cross-fusion mechanism of high gas thick coal seam","authors":"Pengxiang Zhao , Zechen Chang , Shugang Li , Risheng Zhuo , Yongyong Jia , Qiudong Shao , Wen Lei","doi":"10.1016/j.ijmst.2024.12.003","DOIUrl":"10.1016/j.ijmst.2024.12.003","url":null,"abstract":"<div><div>In this study, to better decide the effect of coal seam dip angle upon the dynamic change of the cross-fusion in gas transport and storage areas during the progress of working face in the high gas thick coal seam, a two-dimensional physical simulation experiment regarded as the theoretical research was conducted to properly explore the variation law of overburden fracture. The results demonstrated that the boundary of the gas transport zone was located in the region of fracture separation. The boundary of the gas storage area was located in the abrupt penetration zone. Also, according to the information theory, the state of the gas transport and storage areas was determined by the changing trend of the fracture rate and fracture entropy. The mathematical representation model of the dip effect in gas transport and storage areas was established. The criteria upon which the regional location of the gas transport area and gas storage area can be based were put forward. The cross-fusion evolution process of the dip effect in gas transport and storage areas was revealed as well. The research results could provide guidance for realising directional and accurate gas extraction.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"35 1","pages":"Pages 69-85"},"PeriodicalIF":11.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ensemble prediction modeling of flotation recovery based on machine learning 基于机器学习的浮选回收率集成预测建模

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.012

Guichun He , Mengfei Liu , Hongyu Zhao , Kaiqi Huang

{"title":"Ensemble prediction modeling of flotation recovery based on machine learning","authors":"Guichun He , Mengfei Liu , Hongyu Zhao , Kaiqi Huang","doi":"10.1016/j.ijmst.2024.11.012","DOIUrl":"10.1016/j.ijmst.2024.11.012","url":null,"abstract":"<div><div>With the rise of artificial intelligence (AI) in mineral processing, predicting the flotation indexes has attracted significant research attention. Nevertheless, current prediction models suffer from low accuracy and high prediction errors. Therefore, this paper utilizes a two-step procedure. First, the outliers are processed using the box chart method and filtering algorithm. Then, the decision tree (DT), support vector regression (SVR), random forest (RF), and the bagging, boosting, and stacking integration algorithms are employed to construct a flotation recovery prediction model. Extensive experiments compared the prediction accuracy of six modeling methods on flotation recovery and delved into the impact of diverse base model combinations on the stacking model’s prediction accuracy. In addition, field data have verified the model’s effectiveness. This study demonstrates that the stacking ensemble approaches, which uses ten variables to predict flotation recovery, yields a more favorable prediction effect than the bagging ensemble approach and single models, achieving MAE, RMSE, <em>R</em><sup>2</sup>, and MRE scores of 0.929, 1.370, 0.843, and 1.229%, respectively. The hit rates, within an error range of ±2% and ±4%, are 82.4% and 94.6%. Consequently, the prediction effect is relatively precise and offers significant value in the context of actual production.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1727-1740"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing mine groundwater system prediction: Full-process simulation of mining-induced spatio-temporal variations in hydraulic conductivities via modularized modeling 加强矿山地下水系统预测：基于模块化建模的采动诱导水力导度时空变化全过程模拟

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.014

Shihao Meng , Qiang Wu , Yifan Zeng , Leiyu Gu

{"title":"Enhancing mine groundwater system prediction: Full-process simulation of mining-induced spatio-temporal variations in hydraulic conductivities via modularized modeling","authors":"Shihao Meng , Qiang Wu , Yifan Zeng , Leiyu Gu","doi":"10.1016/j.ijmst.2024.11.014","DOIUrl":"10.1016/j.ijmst.2024.11.014","url":null,"abstract":"<div><div>The intricate interplay between rock mechanics and fracture-induced fluid flow during resource extraction exerts profound effects on groundwater systems, posing a pivotal challenge for promoting green and safe development in underground engineering. To address this, a novel numerical model with an explicit coupling simulation strategy is presented. This model integrates distinct modules for individual physical mechanisms, ensuring second-order accuracy through shared time integration, thereby overcoming limitations in simulating mining-induced strata damage, water flow, and permeability dynamics. A novel mathematical model is incorporated into the mechanical simulation to characterize the abrupt increase in permeability resulting from rock fracture propagation. This increase is quantified by evaluating the plastic damage state of rocks and incorporating a damage coefficient that is intrinsically linked to rock strength. The mechanical model tracks permeability changes due to mining. The flow model simulates aquifer-mine water interactions by calculating hydraulic conductivity and using dynamic zoning, adapting to mining progress. When applied to a case study of a complex mine, this approach significantly improved the accuracy of water inflow rate predictions by 57%.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1625-1642"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure mechanisms of roadways with non-coplanar axial direction and stress space: True triaxial test and mechanical analysis 轴向与应力空间非共面巷道破坏机理：真三轴试验与力学分析

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.009

Zongyu Ma , Jianping Zuo

{"title":"Failure mechanisms of roadways with non-coplanar axial direction and stress space: True triaxial test and mechanical analysis","authors":"Zongyu Ma , Jianping Zuo","doi":"10.1016/j.ijmst.2024.11.009","DOIUrl":"10.1016/j.ijmst.2024.11.009","url":null,"abstract":"<div><div>The axial direction of a roadway often forms a certain spatial angle with the in-situ stress field. Variations in the spatial angles can lead to differences in the stress environment in which the roadway is exposed. Different forms of failure characteristics occur in the roadway. In order to study the failure mechanism with different spatial characteristics, rock-like material specimens with holes in 9 different horizontal and vertical angles were designed. The true triaxial test system was used to carry out the test with the same loading path. The results show that the horizontal angle <span><math><mrow><mi>α</mi></mrow></math></span> and vertical angle <span><math><mrow><mi>β</mi></mrow></math></span> have a significant effect on the specimen strength, specimen rupture angle, and the form of spalling failure in the hole. The spatial angle leads to the formation of asymmetric heterotype V-notches in both sides within the hole. The asymmetry is evident in both the depth and extent of spalling. The strength of the specimen increases and then decreases with increasing vertical angle <span><math><mrow><mi>β</mi></mrow></math></span>. The rupture angle increases and then decreases with increasing horizontal angle <span><math><mrow><mi>α</mi></mrow></math></span> and increases with the increase of the vertical angle <span><math><mrow><mi>β</mi></mrow></math></span>. The stress analytical model of the specimen under three-dimensional compression was established. The distribution of principal stresses around the holes was theoretically analyzed. It is found that the presence of spatial angle changes the distribution of principal stresses around the hole from symmetric to asymmetric distribution. The shift of the principal stresses is responsible for the change from a V-notch to a heterotype V-notch.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1711-1725"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing CO2 mitigation potential and mechanical properties of shotcrete in underground mining utilizing microbially induced calcium carbonate precipitation 利用微生物诱导碳酸钙沉淀提高地下开采喷射混凝土的CO2减排潜力和力学性能

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.007

Qiusong Chen , Xinyi Yuan , Aixiang Wu , Yikai Liu

{"title":"Enhancing CO2 mitigation potential and mechanical properties of shotcrete in underground mining utilizing microbially induced calcium carbonate precipitation","authors":"Qiusong Chen , Xinyi Yuan , Aixiang Wu , Yikai Liu","doi":"10.1016/j.ijmst.2024.11.007","DOIUrl":"10.1016/j.ijmst.2024.11.007","url":null,"abstract":"<div><div>Achieving low-carbon development in the mining sector is fundamental for global carbon emissions abatement, especially considering the growing demand for mineral resources. Currently, the energy footprint of mines emerges as the main carbon contributor. While cleaner energy sources have the potential for reducing emissions, transitioning to these sources remains challenging. This study presents a practical CO<sub>2</sub> mitigation strategy for underground mining by integrating bacteria into shotcrete to enhance excavation. The findings demonstrate that bacteria can capture CO<sub>2</sub> from the atmosphere, thereby increasing the carbonation reactions. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) analysis shows the captured CO<sub>2</sub> present in the forms of calcite, vaterite, and aragonite. The formed carbonates intermingled with the precipitated calcium-silicate-hydrate (C-S-H) at relatively low bacteria additions, densifying the cementitious matrix and improving the mechanical properties. However, high bacteria concentrations lead to excess carbonates that consume C-S-H precipitation, counteracting the benefits of carbonation and reducing mechanical strength. Optimal results were achieved with 0.3% bacteria by mass fraction, potentially mitigating 0.34 kg/m<sup>2</sup> of CO<sub>2</sub>, which is approximately equivalent 567 g of CO<sub>2</sub> absorbed by 1 g of bacteria based on the effectiveness demonstrated in this study. These findings are crucial for advancing emissions control in mining and supporting climate goals outlined in the Paris Agreement.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1643-1653"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143239683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An innovative test method for mechanical properties of sandstone under instantaneous unloading confining pressure 一种创新的砂岩瞬时卸围压力学性能试验方法

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.011

Xuesheng Liu , Shenglong Yang , Yunliang Tan , Jun Wang , Xuebin Li , Yu Zhang

{"title":"An innovative test method for mechanical properties of sandstone under instantaneous unloading confining pressure","authors":"Xuesheng Liu , Shenglong Yang , Yunliang Tan , Jun Wang , Xuebin Li , Yu Zhang","doi":"10.1016/j.ijmst.2024.11.011","DOIUrl":"10.1016/j.ijmst.2024.11.011","url":null,"abstract":"<div><div>With the increase of underground engineering construction depth, the phenomenon of surrounding rock sudden failure caused by supporting structure failure occurs frequently. The conventional unloading confining pressure (CUCP) test cannot simulate the plastic yielding and instantaneous unloading process of supporting structure to rock. Thus, a high stress loading-instantaneous unloading confining pressure (HSL-IUCP) test method was proposed and applied by considering bolt’s fracture under stress. The wall thickness of confining pressure plates and the material of bolts were changed to realize different confining pressure loading stiffness (CPLS) and lateral maximum allowable deformation (LMAD). The superiority of HSL-ICPU method is verified compared with CUCP. The rock failure mechanism caused by sudden failure of supporting structure is obtained. The results show that when CPLS increases from 1.35 to 2.33 GN/m, rock’s peak strength and elastic modulus increase by 25.18% and 23.70%, respectively. The fracture characteristics change from tensile failure to tensile-shear mixed failure. When LMAD decreases from 0.40 to 0.16 mm, rock’s residual strength, peak strain, and residual strain decrease by 91.80%, 16.94%, and 21.92%, respectively, and post-peak drop modulus increases by 140.47%. The test results obtained by this method are closer to rock’s real mechanical response characteristics compared with CUCP.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1677-1692"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel sulfidization system for enhancing hemimorphite flotation through Cu/Pb binary metal ions 铜/铅二元金属离子强化半亚铁精矿浮选的新型硫化体系

IF 11.7 1区工程技术

International Journal of Mining Science and Technology Pub Date : 2024-12-01 DOI: 10.1016/j.ijmst.2024.11.008

Qicheng Feng, Yingchao Zhang, Ga Zhang, Guang Han, Wenjuan Zhao

{"title":"A novel sulfidization system for enhancing hemimorphite flotation through Cu/Pb binary metal ions","authors":"Qicheng Feng, Yingchao Zhang, Ga Zhang, Guang Han, Wenjuan Zhao","doi":"10.1016/j.ijmst.2024.11.008","DOIUrl":"10.1016/j.ijmst.2024.11.008","url":null,"abstract":"<div><div>The low reactivity of hemimorphite surfaces hinders the effective action of sulfidizing agents and xanthate, resulting in unsatisfactory flotation performance. To enhance the surface reactivity of hemimorphite with sulfidizing agents and xanthate, Cu/Pb binary metal ions were introduced into the sulfidization flotation system to enhance the sulfidization process and thereby promote hemimorphite flotation. The flotation results demonstrated a remarkable improvement in the hemimorphite flotation recovery when Cu/Pb binary metal ions were added prior to sulfidization. The flotation recovery of hemimorphite increased from less than 5% to over 80%. After strengthening the sulfidization of hemimorphite with Cu/Pb binary metal ions, the mineral surface formed multicomponent sulfide products composed of zinc, copper, and lead sulfide. The reactivity of the copper-lead sulfide components exceeds that of the zinc sulfide component; thus, the enhancement by Cu/Pb binary metal ions not only increases the content of sulfide products on the hemimorphite surface but also augments their reactivity. Contact angle and adsorption experiments indicated that after enhanced sulfidization with Cu/Pb binary metal ions, the hemimorphite surface adsorbed a greater amount of xanthate, significantly increasing the mineral surface hydrophobicity. Consequently, the enhanced sulfidization by Cu/Pb binary metal ions effectively improved the flotation behavior of hemimorphite, presenting an innovative sulfidization system for the flotation recovery of zinc silicate minerals in zinc oxide ores.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"34 12","pages":"Pages 1741-1752"},"PeriodicalIF":11.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0