Minerals Engineering最新文献_第2页

Effect of chain length on the flotation performance of aniline-based compounds in the flotation of copper sulfide ores 链条长度对硫化铜矿浮选中苯胺类化合物浮选性能的影响

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-24 DOI: 10.1016/j.mineng.2026.110109

Jia Zhao , Labone L. Godirilwe , Kazutoshi Haga , Manabu Yamada , Kosuke Makiguchi , Seunggwan Hong , Atsushi Shibayama

{"title":"Effect of chain length on the flotation performance of aniline-based compounds in the flotation of copper sulfide ores","authors":"Jia Zhao , Labone L. Godirilwe , Kazutoshi Haga , Manabu Yamada , Kosuke Makiguchi , Seunggwan Hong , Atsushi Shibayama","doi":"10.1016/j.mineng.2026.110109","DOIUrl":"10.1016/j.mineng.2026.110109","url":null,"abstract":"<div><div>Six aniline-based compounds with different alkyl chain lengths ranging from 4 to 14 were synthesized from 2-aminobenzenethiol and 1-bromoalkane. The aniline-based compounds were used as collectors for the investigation of the flotation effect on copper sulfide ores. Chalcopyrite flotation showed that copper recovery tended to increase and then decrease with increasing alkyl chain length (C4 → C14). The highest copper recovery was achieved using 2-(dodecylthio)aniline (2-DDA) with a chain length of 12 at pH 9 and a concentration of 8 × 10<sup>−4</sup> mol/L, which was higher than that of the conventional collector PAX. The flotation results of actual low-grade copper sulfide ores showed the same trend of alkyl chain length and copper recovery of aniline-based compounds as the flotation of chalcopyrite samples. And the flotation performance of aniline-based compounds, especially those with longer chains, was generally better than that of PAX. Surface tension tests showed that the surface tension of aniline-based compounds decreased with increasing alkyl chain length, but the reduction in surface tension gradually decreased. An appropriate increase in alkyl chain length is favorable to the enhancement of the collector’s floatability. The adsorption experiments showed that the maximum adsorption rate of aniline-based compounds on the surface of chalcopyrite could reach 99.7% from 2-DDA, and the order of adsorption capacity was consistent with the flotation results. According to the FT-IR spectroscopy analysis and coordination chemistry theory, it was speculated that the aniline-based compounds might form a five-membered ring with copper on chalcopyrite through the coordination of the amino and thiol groups. The hydrophobic association of the long-chain alkyl groups further enhanced the floatability of aniline-based compounds on the mineral surface.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110109"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025308","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}

引用次数: 0

H2O2-mediated surface chemistry converts a non-selective depressant to galena-selective for efficient Cu–Pb flotation separation h2o2介导的表面化学反应将非选择性抑制剂转化为方铅矿选择性抑制剂，实现了铜铅浮选的高效分离

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-30 DOI: 10.1016/j.mineng.2026.110110

Yunzhen Hu , Kangjing Wu , Shuai Wang , Zhanfang Cao , Xin Ma , Hong Zhong

{"title":"H2O2-mediated surface chemistry converts a non-selective depressant to galena-selective for efficient Cu–Pb flotation separation","authors":"Yunzhen Hu , Kangjing Wu , Shuai Wang , Zhanfang Cao , Xin Ma , Hong Zhong","doi":"10.1016/j.mineng.2026.110110","DOIUrl":"10.1016/j.mineng.2026.110110","url":null,"abstract":"<div><div>The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H<sub>2</sub>O<sub>2</sub> pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H<sub>2</sub>O<sub>2</sub> oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110110"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079658","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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Crystallization regulation for al and Fe impurity migration and removal from waste quartz crucible with combined process of High-Temperature Roasting-Acid leaching 高温焙烧-酸浸联合工艺对废石英坩埚中铝、铁杂质迁移去除的结晶调控

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-20 DOI: 10.1016/j.mineng.2026.110104

Suoque Wu , Shifeng Han , Xiaohan Wan , Ning Tan , Shicong Yang , Kuixian Wei , Wenhui Ma

{"title":"Crystallization regulation for al and Fe impurity migration and removal from waste quartz crucible with combined process of High-Temperature Roasting-Acid leaching","authors":"Suoque Wu , Shifeng Han , Xiaohan Wan , Ning Tan , Shicong Yang , Kuixian Wei , Wenhui Ma","doi":"10.1016/j.mineng.2026.110104","DOIUrl":"10.1016/j.mineng.2026.110104","url":null,"abstract":"<div><div>The rapid expansion of the PV sector makes the recycling of WQC (Waste Quartz Crucible) imperative for sustainable resource management within the industry. This study proposes a combined process of high-temperature roasting and acid leaching for the removal of metallic impurities from waste quartz crucibles, and the effects of roasting temperature, holding time on the transformation of amorphous SiO<sub>2</sub>, and the removal of impurity during the acid leaching have been systematically investigated. The results showed that the increase of roasting temperature and the prolongation of holding time significantly promoted the crystallization of α-cristobalite, and crystallinity reached 22.55 % at 1573 K holding time of 4 h, and the activation energy was 464.21 kJ·mol<sup>−1</sup>. During the acid leaching, the α-cristobalite was completely dissolved by a 3.5 M HF and 6 M HCl mixture, effectively removing Al and Fe impurities with efficiencies of 93.64 % and 92.59 %, respectively. Microscopic characterization reveals that the high-temperature roasting-induced particle fusion reconfiguration and the acid leaching-etched porous structure synergistically enhanced the impurity exposure. This work establishes that the synergistic roasting-acid leaching purification process is effective for WQC impurity removal, not only mitigates ecological damage and energy consumption associated with raw quartz mining but also represents a sustainable alternative with long-term environmental benefits.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110104"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014875","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}

引用次数: 0

Acid-Free Cu(I) activator for Selective pyrrhotite Flotation: Interfacial activation pathway and mechanistic insights 无酸铜(I)活化剂选择性磁黄铁矿浮选：界面活化途径和机理的见解

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-25 DOI: 10.1016/j.mineng.2026.110113

Yiqi Cui , Chuyu Yang , Ke Zhou , Jing Wang , Xiao Wang , Zhentao Yuan

{"title":"Acid-Free Cu(I) activator for Selective pyrrhotite Flotation: Interfacial activation pathway and mechanistic insights","authors":"Yiqi Cui , Chuyu Yang , Ke Zhou , Jing Wang , Xiao Wang , Zhentao Yuan","doi":"10.1016/j.mineng.2026.110113","DOIUrl":"10.1016/j.mineng.2026.110113","url":null,"abstract":"<div><div>Tin ores in southwestern China are complex polymetallic deposits containing copper, tin, and iron, with abundant pyrrhotite that is difficult to separate from cassiterite, resulting in low desulfurization efficiency. To address the high operational cost, excessive reagent consumption, and environmental risks of conventional CuSO<sub>4</sub> activators, an acid-free Cu(I)-based desulfurization activator named SY-1 was developed. SY-1 increased pyrrhotite recovery to approximately 90 % at 0.4 × 10<sup>–4</sup> mol·L<sup>−1</sup> and remained effective across a wide pH range of 2–12. Compared with CuSO<sub>4</sub>, SY-1 induced a stronger negative shift in zeta potential, enabling higher BX anion adsorption and superior activation efficiency. Furthermore, surface characterization confirmed that activation increased the Cu(I) content and S<sup>2-</sup>/S<sub>2</sub><sup>2-</sup> ratio of pyrrhotite, thereby exposing additional active sites. In addition, quantum chemical calculations and AIMD simulations showed that Cu(I) adsorbs strongly on pyrrhotite and creates additional BX anion adsorption sites, thereby avoiding the multi-step electron-transfer pathway of Cu (II) and enabling efficient, low-dosage flotation. Taken together, this study presents a green and highly efficient desulfurization activator, offering a sustainable strategy for processing complex polymetallic tin ores.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110113"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048072","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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Effects of high-vibration elastic screen surface structure on motion characteristics and screening performance 高振动弹性筛网表面结构对运动特性和筛分性能的影响

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-23 DOI: 10.1016/j.mineng.2026.110107

Yuhan Liu , Kaikai Chen , Ran Yang , Shijie Yu , Fengliang Liu , Mingzhen Lu , Haishen Jiang , Miao Pan

引用次数: 0

Evaluation of polyamino polyether methylene phosphonic acid as an eco-friendly depressant in the separation of apatite and dolomite 聚氨基聚醚亚甲基膦酸在磷灰石和白云石分离中的环保型抑制剂评价

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-02-01 DOI: 10.1016/j.mineng.2026.110122

Yuhua Zhu , Cheng Liu , Hongyang Wang , Wei Xu , Siyuan Yang

{"title":"Evaluation of polyamino polyether methylene phosphonic acid as an eco-friendly depressant in the separation of apatite and dolomite","authors":"Yuhua Zhu , Cheng Liu , Hongyang Wang , Wei Xu , Siyuan Yang","doi":"10.1016/j.mineng.2026.110122","DOIUrl":"10.1016/j.mineng.2026.110122","url":null,"abstract":"<div><div>Flotation separation of apatite from dolomite is still a challenge due to their similar surface characteristics. To address this issue, polyamino polyether methylene phosphonic acid (PAPEMP) was employed to separate apatite and dolomite. The single-mineral flotation results showed that PAPEMP selectively depressed the floatability of dolomite using the sodium oleate (NaOl) collector. The artificial mixed mineral and real flotation tests confirmed that separation between apatite and dolomite could be realized in the reagent scheme of PAPEMP/NaOl. The adsorption tests indicated that the adsorption of PAPEMP on the dolomite surface was much greater than that on the apatite surface. The zeta potential and Fourier Transform Infrared Spectroscopy (FTIR) experiments verified that the interaction between dolomite and PAPEMP was stronger than that between apatite and PAPEMP, then selectively hindered the interaction of NaOl with the dolomite surface. The XPS results indicated that phosphate groups in the PAPEMP molecule interact with calcium/magnesium ions on the dolomite surface, while no effective chemical interaction occurred between PAPEMP and the apatite surface. MS calculation results further confirmed that the interaction between PAPEMP and the dolomite surface was stronger than that between PAPEMP and the apatite surface. Therefore, PAPEMP could be used as an appropriate depressant to separate apatite and dolomite.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110122"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110838","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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A review of particle separation technologies for lunar in-situ resource utilization 月球原位资源利用中的颗粒分离技术综述

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-21 DOI: 10.1016/j.mineng.2026.110099

Ruoxi Zhao, Haifeng Wang, Chenlong Duan, Liang Dong, Juan Hao, Chenmin Liu

{"title":"A review of particle separation technologies for lunar in-situ resource utilization","authors":"Ruoxi Zhao, Haifeng Wang, Chenlong Duan, Liang Dong, Juan Hao, Chenmin Liu","doi":"10.1016/j.mineng.2026.110099","DOIUrl":"10.1016/j.mineng.2026.110099","url":null,"abstract":"<div><div>Particle separation technology plays a pivotal role in resource extraction and processing, particularly for lunar in-situ resource utilization. This paper comprehensively reviews recent advances in particle separation methods suitable for the lunar environment, with special emphasis on screening, magnetic separation, and electrostatic separation techniques for regolith processing. Research demonstrates that dry separation technologies have emerged as the preferred approach for lunar regolith beneficiation due to their low energy consumption, lightweight equipment requirements, and water-free operation − critical advantages in the Moon’s unique reduced-gravity, high-vacuum, and extreme temperature conditions. Through comparative analysis of existing technologies, this study examines the feasibility of integrated separation systems and identifies future development directions focusing on technological optimization and multi-process integration. The continuous improvement of separation efficiency and the development of hybrid solutions will provide essential resource support for lunar base construction and deep space exploration missions, while also advancing space resource utilization technologies. Notably, the innovations derived from lunar applications may offer valuable insights for particle separation in terrestrial extreme environments.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110099"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014873","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}

引用次数: 0

Carbothermal synthesis of quartz-supported S-nZVI from limonite and pyrite for enhanced organic pollutant degradation 褐铁矿和黄铁矿碳热合成石英负载S-nZVI增强有机污染物降解

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.mineng.2026.110111

Jiangan Chen , Ting Liao , Meian Wang , Mingxing Cheng , Danliang Zeng , Zuocheng Yuan , Wen Yu , Ying Ye , Wenjie Zhang , Qiongyao Tang , Chengdu Qi

{"title":"Carbothermal synthesis of quartz-supported S-nZVI from limonite and pyrite for enhanced organic pollutant degradation","authors":"Jiangan Chen , Ting Liao , Meian Wang , Mingxing Cheng , Danliang Zeng , Zuocheng Yuan , Wen Yu , Ying Ye , Wenjie Zhang , Qiongyao Tang , Chengdu Qi","doi":"10.1016/j.mineng.2026.110111","DOIUrl":"10.1016/j.mineng.2026.110111","url":null,"abstract":"<div><div>Sulfidized nano zero-valent iron (S-nZVI) is an exceptional wastewater treatment material, but its excessively high preparation costs severely restrict its industrial applications. In this study, a carbothermal reduction method was developed to prepare quartz-supported S-nZVI (SiO<sub>2</sub>@S-nZVI) from limonite ore and pyrite. The preparation conditions, characteristics, preparation mechanism of SiO<sub>2</sub>@S-nZVI, and its performance in removing organic contaminants were investigated. Batch experiments revealed that SiO<sub>2</sub>@S-nZVI prepared under the conditions of an FeS<sub>2</sub> dosage of 6% and a roasting temperature of 1000 ℃ with a S/Fe molar ratio of 0.125 and an iron metallization rate of 91.76% exhibited the best performance for removing methyl orange. Core-shell structure S-nZVI was successfully synthesized on SiO<sub>2</sub> surfaces in the SiO<sub>2</sub>@S-nZVI, where ZVI derived from iron mineral reduction reacted with S<sub>2</sub> released by pyrite decomposition during carbothermal reduction process. The incorporation of S into both the surface and the bulk of ZVI accelerates electron transfer, while the carrier SiO<sub>2</sub> inhibits the aggregation of S-nZVI, thereby significantly enhancing the material’s pollutant removal performance. The degradation kinetics of organic contaminants were studied under various conditions, and the results showed that SiO<sub>2</sub>@S-nZVI can degrade methyl orange, acid orange G, methylene blue, and p-nitrophenol efficiently. The degradation mechanism analysis reveals that a redox reaction occurs between SiO<sub>2</sub>@S-nZVI and methyl orange, leading to the cleavage of the azo double bond in methyl orange and its subsequent degradation and mineralization. These findings offer a cost-effective method for the preparation of highly reactive S-nZVI.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110111"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072444","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}

引用次数: 0

Enhancing gravity separation of low-grade ilmenites by surface flash passivation against ultrafine aluminosilicate coating 超细硅酸铝涂层表面闪蒸钝化提高低品位钛铁矿重选效果

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-20 DOI: 10.1016/j.mineng.2026.110090

M. Tang, J. Luo

{"title":"Enhancing gravity separation of low-grade ilmenites by surface flash passivation against ultrafine aluminosilicate coating","authors":"M. Tang, J. Luo","doi":"10.1016/j.mineng.2026.110090","DOIUrl":"10.1016/j.mineng.2026.110090","url":null,"abstract":"<div><div>Iron ore tailings often contain valuable titanium minerals, yet recovering finely liberated ilmenite remains a challenge for gravity separation. This study aims to identify the factors hindering the beneficiation of a low-grade ilmenite ore with alumina-silicate gangues using Vibrated Cone Separation (VCS) as an EGS technique and explores potential mitigation strategies. A series of gravity separation tests, coupled with scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) observations, were conducted to determine the factors influencing the selective separation of ilmenite particles. The results show that ultrafine aluminosilicates strongly adhere to the surfaces of free ilmenite particles, diluting the TiO<sub>2</sub> concentrate grade. Attritioning this material by high-speed agitation was not effective in removing the coating of the ultrafine gangues. However, flash surface passivation by adding oxalic acid directly into the grinding process significantly decreased these non-selective particle aggregates, resulting in cleaner surfaces and a 6% increase in TiO<sub>2</sub> content.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110090"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006469","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}

引用次数: 0

Preparation and characterization of a novel multi-component dust suppressant suitable for dust control in tailings pond 一种适用于尾矿库粉尘治理的新型多组分抑尘剂的制备与表征

IF 5 2区工程技术

Minerals Engineering Pub Date : 2026-05-01 Epub Date: 2026-01-21 DOI: 10.1016/j.mineng.2026.110080

Xiaochuan Xu , Chao Li , Yajun Dong , Xiaowei Gu , Yunqi Zhao , Zhiyuan Wu , Yuxiang Zhong , Depei Lu

{"title":"Preparation and characterization of a novel multi-component dust suppressant suitable for dust control in tailings pond","authors":"Xiaochuan Xu , Chao Li , Yajun Dong , Xiaowei Gu , Yunqi Zhao , Zhiyuan Wu , Yuxiang Zhong , Depei Lu","doi":"10.1016/j.mineng.2026.110080","DOIUrl":"10.1016/j.mineng.2026.110080","url":null,"abstract":"<div><div>Dust emissions from tailings ponds threaten worker health and nearby ecosystems. A multi-component dust suppressant (MCDS) composed of glycerol (GLY), sodium carboxymethyl cellulose (CMC-Na), and polyacrylamide (PAM) was optimized by response-surface methodology with viscosity and surface tension as dual objectives. The optimal ratio of MCDS is 23.62 % GLY, 2.28 % CMC-Na, and 0.3 % PAM, it exhibited a viscosity of 38.1 mPa·s and a surface tension of 58.1 mN/m, the penetration depth of dust reaches 11 cm in 130 min, produced a 6° contact angle on iron tailings, retained water for 5 h at 45 °C, and achieved 96.5 % dust-suppression efficiency at a wind speed of 15 m/s. These indicators indicate that MCDS exhibits satisfactory wettability, permeability, evaporation resistance, and wind erosion resistance under the tested laboratory surrogate conditions, including 45 °C and a maximum wind speed of 15 m/s. Multiscale characterization (FT-IR, SEM, TG–DSC–DTG) combined with molecular dynamics (MD) elucidated the mechanism: MD resolved an 21.8 Å adsorbed interfacial layer, a pronounced reduction of the interfacial water diffusion coefficient to 0.1265, and enhanced interfacial binding energy, supporting a synergy of hydrogen bonding, electrostatic attraction, and polymer-network formation that stabilizes the surface crust and retains moisture.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":"239 ","pages":"Article 110080"},"PeriodicalIF":5.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014870","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}

引用次数: 0