Pub Date : 2026-02-09DOI: 10.1016/j.mineng.2026.110151
Long Ren, Kuixian Wei, Shicong Yang, Wenhui Ma, Junjie Zhao, Guangying Zhang, Ruizhe Wang, Yangwei Zou, Baitong Li
The deep removal of iron impurities from vein quartz stands as a critical prerequisite for the fabrication of high-purity quartz (HPQ) sand. However, conventional hydrometallurgical techniques are often plagued by significant environmental liabilities—primarily due to fluoride contamination—and suboptimal purification efficiencies. Addressing these limitations, this study employs sodium dodecyl sulfate (SDS) to modulate the wettability of the hydrochloric acid (HCl) lixiviant, enabling deep penetration into the internal micro-fissures of the quartz matrix for enhanced impurity extraction. Experimental results demonstrate that the addition of 2.5 ωt% SDS significantly alters the interfacial properties: the surface tension of the lixiviant was reduced from 60.39 mN/m to 33.23 mN/m, and the contact angle on the quartz surface decreased from 57.14° to 33.29°, thereby substantially amplifying the solution’s wetting capability. Mechanistically, SDS molecules adsorb onto the quartz particle surfaces to form a structured adsorption layer. This formation facilitates the diffusion of H+ ions within the hemimicelle structure, driving a greater proton flux into the internal porosity of the quartz to accelerate impurity leaching. Under optimized conditions (200℃, 3 mol/L HCl, and 2.5 ωt% SDS with a reaction time of 2 h), the iron content was drastically reduced from 294 ppm to a mere 6.75 ppm, corresponding to a removal efficiency of 97.70%. This work thus presents a clean, high-efficiency protocol for the hydrometallurgical purification of quartz, offering a viable alternative to fluorine-based processes.
{"title":"Deep removal of iron from quartz via SDS-enhanced HCl leaching: Wetting and penetration mechanism","authors":"Long Ren, Kuixian Wei, Shicong Yang, Wenhui Ma, Junjie Zhao, Guangying Zhang, Ruizhe Wang, Yangwei Zou, Baitong Li","doi":"10.1016/j.mineng.2026.110151","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110151","url":null,"abstract":"The deep removal of iron impurities from vein quartz stands as a critical prerequisite for the fabrication of high-purity quartz (HPQ) sand. However, conventional hydrometallurgical techniques are often plagued by significant environmental liabilities—primarily due to fluoride contamination—and suboptimal purification efficiencies. Addressing these limitations, this study employs sodium dodecyl sulfate (SDS) to modulate the wettability of the hydrochloric acid (HCl) lixiviant, enabling deep penetration into the internal micro-fissures of the quartz matrix for enhanced impurity extraction. Experimental results demonstrate that the addition of 2.5 ωt% SDS significantly alters the interfacial properties: the surface tension of the lixiviant was reduced from 60.39 mN/m to 33.23 mN/m, and the contact angle on the quartz surface decreased from 57.14° to 33.29°, thereby substantially amplifying the solution’s wetting capability. Mechanistically, SDS molecules adsorb onto the quartz particle surfaces to form a structured adsorption layer. This formation facilitates the diffusion of H<ce:sup loc=\"post\">+</ce:sup> ions within the hemimicelle structure, driving a greater proton flux into the internal porosity of the quartz to accelerate impurity leaching. Under optimized conditions (200℃, 3 mol/L HCl, and 2.5 ωt% SDS with a reaction time of 2 h), the iron content was drastically reduced from 294 ppm to a mere 6.75 ppm, corresponding to a removal efficiency of 97.70%. This work thus presents a clean, high-efficiency protocol for the hydrometallurgical purification of quartz, offering a viable alternative to fluorine-based processes.","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"18 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Process design and optimization for resource-efficient recovery of Fe, P, and Ti from a low-grade complex iron ore","authors":"Shiteng Qin, Xiaokun Li, Bing Zhao, Peng Gao, Yanjun Li, Zhidong Tang","doi":"10.1016/j.mineng.2026.110148","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110148","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"30 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on electric field simulation and motion mechanism of rutile and zircon particles in the screen-type electrostatic separator","authors":"Yunhao Wei, Yongxing Zheng, Hongshen Zhang, Shibo Wang, Mingsong Qi","doi":"10.1016/j.mineng.2026.110142","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110142","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"6 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-05DOI: 10.1016/j.mineng.2026.110077
Cláudia D. da Conceição, André L.A. Santos, Leonardo J.F. Campos, Maurício G. Bergerman, Douglas B. Mazzinghy
{"title":"Assessing the specific energy for two iron ores using steel, ceramic and mixed steel-ceramic ball charges in fine grinding","authors":"Cláudia D. da Conceição, André L.A. Santos, Leonardo J.F. Campos, Maurício G. Bergerman, Douglas B. Mazzinghy","doi":"10.1016/j.mineng.2026.110077","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110077","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"87 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic resource utilization of industrial wastes: Preparation of silicon fertilizer from copper tailings and soda residue and its process optimization","authors":"Jiwei Wu, Shukai Sun, Yafang Zhang, Ruixin Hao, Jingkai Wang, Hongxiang Xu, Linsheng Wei","doi":"10.1016/j.mineng.2026.110125","DOIUrl":"https://doi.org/10.1016/j.mineng.2026.110125","url":null,"abstract":"","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"1 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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