Green and Smart Mining Engineering最新文献_第2页

Current supply status, demand trends and security measures of chromium resources in China 中国铬资源的供应现状、需求趋势和安全措施

Green and Smart Mining Engineering Pub Date : 2024-04-01 DOI: 10.1016/j.gsme.2024.04.002

Min Liu, Jingwen Mao, Zhihua Zhang, Lixing Li, Tao Long, Wendi Chao

引用次数: 0

Enhanced leaching of copper from refractory oxidized copper ore by calcium fluoride: Behavior and mechanism 氟化钙对难熔氧化铜矿铜浸出的促进作用：行为与机理

Green and Smart Mining Engineering Pub Date : 2024-03-01 DOI: 10.1016/j.gsme.2024.03.006

Yang Li, Yaping Liu, Yuhui Fu, Ziliang Liu, Peilong Wang, Jun Yin, J. Kou, Chunbao Sun, Wanxiang Liu

引用次数: 0

Selective flotation of galena and sphalerite using N-(phosphonomethyl) iminodiacetic acid as an eco-friendly depressant N-（磷甲乙基）亚氨基二乙酸作为环保型抑制剂选择性浮选方铅矿和闪锌矿

Green and Smart Mining Engineering Pub Date : 2024-03-01 DOI: 10.1016/j.gsme.2024.03.001

Zihao Wang, Guang Han, Qicheng Feng

{"title":"Selective flotation of galena and sphalerite using N-(phosphonomethyl) iminodiacetic acid as an eco-friendly depressant","authors":"Zihao Wang, Guang Han, Qicheng Feng","doi":"10.1016/j.gsme.2024.03.001","DOIUrl":"https://doi.org/10.1016/j.gsme.2024.03.001","url":null,"abstract":"This study explored the use of N-(phosphonomethyl) iminodiacetic acid (PMIDA) as an eco-friendly depressant for the selective flotation of galena and sphalerite. Microflotation tests were performed to assess the effectiveness of PMIDA. Moreover, the depression mechanism of PMIDA was analyzed through solution chemistry calculations, zeta potential measurements, contact angle determination, X-ray photoelectron spectroscopy, and density-functional theory calculations. Solution chemistry calculations revealed that the presence of PMIDA as PMIDA3− ions in the pulp optimized the depressive effect on sphalerite. Additionally, contact angle results indicated a significant improvement in the surface wettability of sphalerite after PMIDA treatment. Zeta potential measurements revealed that the adsorption capacity of xanthate on the sphalerite surface after PMIDA treatment significantly decreased. X-ray photoelectron spectroscopy analyses indicated that the adsorption of PMIDA on the sphalerite surface was associated with the phosphate functional groups of PMIDA. Density-functional theory simulation data indicated preferential adsorption of PMIDA on the sphalerite surface. These results indicate the potential of PMIDA as a promising depressant to inhibit the flotation of sphalerite and facilitate the selective flotation of galena.","PeriodicalId":518909,"journal":{"name":"Green and Smart Mining Engineering","volume":"1 1","pages":"96-103"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 64

Photocatalytic degradation of xanthates under visible light using heterogeneous CuO/TiO2/montmorillonite composites 异相CuO/TiO2/蒙脱土复合材料在可见光下光催化降解黄药

Green and Smart Mining Engineering Pub Date : 2024-03-01 DOI: 10.1016/j.gsme.2024.03.003

Sikai Zhao, Hong Xiao, Yunshuang Chen, Yaozhong Qi, Chenghao Yan, Ruixue Ma, Qiang Zhao, Wenbao Liu, Yanbai Shen

{"title":"Photocatalytic degradation of xanthates under visible light using heterogeneous CuO/TiO2/montmorillonite composites","authors":"Sikai Zhao, Hong Xiao, Yunshuang Chen, Yaozhong Qi, Chenghao Yan, Ruixue Ma, Qiang Zhao, Wenbao Liu, Yanbai Shen","doi":"10.1016/j.gsme.2024.03.003","DOIUrl":"https://doi.org/10.1016/j.gsme.2024.03.003","url":null,"abstract":"Due to the significant demand for xanthate treatment in mineral effluents, photocatalytic techniques have emerged as one of the most promising solutions. In this study, a high-performance TiO2/CuO/montmorillonite photocatalyst was prepared. In this configuration, TiO2 was the classic photocatalytic material and CuO and montmorillonite were utilized to broaden the adsorption range of solar light and acted as carriers to support the photocatalyst. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy were employed for the comprehensive characterization of the microstructure of the ternary photocatalyst. The results revealed that fine-sized TiO2 and CuO nanoparticles were uniformly and tightly loaded on the montmorillonite layers. The photocatalytic properties of the photocatalyst were evaluated using sodium butyl xanthate as the target contaminant. For pristine TiO2, ultraviolet (UV) light was required to effectively degrade sodium butyl xanthate. Meanwhile, the degradation reaction could be processed efficiently under visible light using the TiO2/CuO/montmorillonite composite as the photocatalyst. Moreover, UV–visible diffuse reflectance spectroscopy, photoluminescence spectroscopy, and radical quench experiments were performed to elucidate the degradation process, and a possible degradation model and mechanism were proposed.","PeriodicalId":518909,"journal":{"name":"Green and Smart Mining Engineering","volume":"1 1","pages":"67-75"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 31