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Ecological-Based mining:A coal-Water-Thermal Collaborative Paradigm in Ecologically Fragile Areas in Western China

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engineering 2024年第7期38卷 209-222页

作者： Xiaoxiu Liu Yifan Zeng Qiang Wu Shihao Meng Jiyue Liang Zhuping Hou National engineering research center of coal Mine Water Hazard Controlling China University of Mining and TechnologyBeijing 100083China College of Geoscience and Surveying engineering China University of Mining and TechnologyBeijing 100083China University of mining and Technology(Beijing)Inner Mongolia research Institute Ordos 017000China

A substantial reduction in groundwater level,exacerbated by coal mining activities,is intensifying water scarcity in western China’s ecologically fragile coal mining ***’s national strategic goal of achieving a carbon peak and carbon neutrality has made eco-friendly mining that prioritizes the protection and efficient use of water resources *** on the resource characteristics of mine water and heat hazards,an intensive coal-water-thermal collaborative co-mining paradigm for the duration of the mining process is *** integrated system for the production,supply,and storage of mining companion resources is achieved through technologies such as roof water inrush prevention and control,hydrothermal quality improvement,and deep-injection geological *** active preventive and control system achieved by adjusting the mining technology and a passive system centered on multiobjective drainage and grouting treatment are suggested,in accordance with the original geological characteristics and dynamic process of water *** implementing advanced multi-objective drainage,specifically designed to address the“skylight-type”water inrush mode in the Yulin mining area of Shaanxi province,a substantial reduction of 50%in water drillings and inflow was achieved,leading to stabilized water conditions that effectively ensure subsequent safe coal *** integrated-energy complementary model that incorporates the clean production concept of heat utilization is also *** findings indicate a potential saving of 8419 t of standard coal by using water and air heat as an alternative heating source for the Xiaojihan coalmine,resulting in an impressive energy conservation of 50.2%and a notable 24.2%reduction in carbon *** ultra-deep sustained water injection of 100 m^(3)·h^(-1)in a single well would not rupture the formation or cause water leakage,and 7.87×10^(5)t of mine water could be effectively stored in the Liujiagou Formation,presenti

关键词： Dual carbon targets coal-water-thermal co-mining Ecologically fragile areas Mine-water control Resource utilization

Efficient desorption and reuse of collector from the flotation concentrate:A case study of scheelite

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International Journal of Minerals,Metallurgy and Materials 2024年第11期 2435-2444页

作者： Liming Tao Jianjun Wang Dejin Liao Wenkai Jia Zihan Zhao Wenfang Che Zhongxu Qi Wei Sun Zhiyong Gao School of Minerals Processing and Bioengineering Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Central South University State Key Laboratory of Mineral Processing BGRIMM Technology Group mining Technology research center China Tungsten and Hightech Materials Co. Ltd. Luoyang Luanchuan molybdenum Group Co. Ltd. Changsha Institute of mining research Co. Ltd.

Flotation is the most common method to obtain concentrate through the selective adsorption of collectors on target minerals to make them hydrophobic and floatable. In the hydrometallurgy of concentrate, collectors adsorbed on concentrate can damage ion-exchange resin and increase the chemical oxygen demand(COD) value of wastewater. In this work, we proposed a new scheme, i.e., desorbing the collectors from concentrate in ore dressing plant and reusing them in flotation flowsheet. Lead nitrate and benzohydroxamic acid(Pb-BHA) complex is a common collector in scheelite flotation. In this study, different physical(stirring or ultrasonic waves) and chemical(strong acid or alkali environment) methods for facilitating the desorption of Pb-BHA collector from scheelite concentrate were explored. Single-mineral desorption tests showed that under the condition of pulp p H 13 and ultrasonic treatment for 15 min, the highest desorption rates of Pb and BHA from the scheelite concentrate were 90.48% and 63.75%, respectively. Run-of-mine ore flotation tests revealed that the reuse of desorbed Pb and BHA reduced the collector dosage by 30% for BHA and 25% for Pb. The strong alkali environment broke the chemical bonds between Pb and BHA. The cavitation effect of ultrasonic waves effectively reduced the interaction intensity between Pb-BHA collector and scheelite surfaces. This method combining ultrasonic waves and strong alkali environment can effectively desorb the collectors from concentrate and provide “clean” scheelite concentrate for metallurgic plants; the reuse of desorbed collector in flotation flowsheet can reduce reagent cost for ore dressing plants.

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The dynamic catalysis of Ga/ZSM-5 catalysts for propane-CO2 coupling conversion to aromatics and syngas

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Journal of Energy Chemistry 2024年第10期97卷 513-519页

作者： Yonggui Song Zhong-Pan Hu Haohao Feng Enze Chen Le Lv Yimo Wu Zhen Liu Yong Jiang Xiaozhi Su Feifei Xu Mingchang Zhu Jingfeng Han Yingxu Wei Svetlana Mintova Zhongmin Liu The Key Laboratory of the Inorganic Molecule-Based Chemistry of liaoning province and Laboratory of Coordination Chemistry Shenyang University of Chemical Technology National engineering research center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Shanghai Advanced research Institute Chinese Academy of Sciences Normandie University Laboratory of Catalysis and Spectrochemistry (LCS) ENSICAENUNICAEN CNRS

Alkane coupling with CO2by metal-containing zeolites catalysis is found to be a promising way to produce aromatics and syngas in recent years,but the real active sites and the role of CO2are still unclear owing to the quick evolution of the metallic active sites and the complex reaction processes including direct propane aromatization,CO2hydrogenation,reverse water-gas shift reaction,and propane-CO2coupling ***,Ga/ZSM-5 catalysts were constructed to study the dynamic evolution of the metallic active sites and the role of CO2during the propane and CO2coupling *** optimizing the reaction conditions,a notable propane conversion rate of 97.9% and an impressive aromatics selectivity of 80.6% in hydrocarbons can be achieved at the conditions of 550℃ and CO2/C3H8of 4.13CO2isotope experiments illustrate that C-atoms of CO2can enter into CO（86.5%） and aromatics（10.8%）during the propane-CO2coupling reaction *** situ XANES and FTIR spectroscopies at 550℃and H2/C3H8atmosphere reveal that GaOxspecies can be gradually dispersed into [GaH2]+/[GaH]2+on the Bronsted acid sites of ZSM-5 zeolite during H2and/or C3H8treatment,which are the real active sites for propane-CO2coupling *** situ CO2-FTIR experiments demonstrate that the [GaH2]+/[GaH]2+species can react with CO2and accelerate the propane and CO2coupling *** work not only presents a cost-effective avenue for CO2utilization,but also contributes to the active site design for improved alkane and CO2activation in coupling reaction system.

关键词： Carbon dioxide Ga/ZSM-5 Gallium hydride Propane aromatization Spectroscopy

孔雀石硫化浮选机理：硫化各向异性研究(英文)

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Journal of Central South University 2024年

作者：饶鑫张晨阳孙伟刘思源姚钰昀陈建华朱阳戈裴勇张洪亮 engineering research center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and utilization， Hunan International Joint research center for Efficient and clean utilization of Critical Metal Mineral resources， School of Minerals Processing and Bioengineering， Central South University State Key Laboratory of Complex Nonferrous Metal resources clean utilization School of resources， Environment and Materials， Guangxi University State Key Laboratory of Mineral Processing Science and Technology， Beijing General research Institute of mining & Metallurgy Department of Chemistry， Xiangtan University

孔雀石是一种亲水性很强、难以常规浮选的矿物，工业上常用硫化浮选法对其进行选矿。然而，孔雀石的晶体结构复杂，在破碎和磨矿过程中形成不同性质的解离面，导致表面各向异性。在本文中，研究了孔雀石的表面硫化的各向异性，并考虑到C... 详细信息

孔雀石是一种亲水性很强、难以常规浮选的矿物，工业上常用硫化浮选法对其进行选矿。然而，孔雀石的晶体结构复杂，在破碎和磨矿过程中形成不同性质的解离面，导致表面各向异性。在本文中，研究了孔雀石的表面硫化的各向异性，并考虑到Cu-O八面体的Jahn-Teller效应对孔雀石硫化的影响，从配位化学的角度进一步探究了孔雀石的硫化机理。计算结果表明，孔雀石（201）和（010）表面的五配位铜离子活性比孔雀石（01）表面的五配位铜离子更强。与孔雀石（01）表面吸附HS-后形成的六配位结构相比，孔雀石（010）和（201）表面吸附HS-后形成的四配位结构更稳定，具有更强的负吸附能。硫化孔雀石表面具有额外的一对π电子以及和黄药分子更小的HOMO（Highest Occupied Molecular Orbital）-LUMO（Lowest Unoccupied Molecular Orbital）带隙，可以与黄药分子形成更强的反馈π键。这项工作为孔雀石的表面硫化机理提供了新的见解，并为浮选药剂靶向设计提供了理论参考。

关键词：孔雀石硫化浮选表面各向异性配位化学姜-泰勒效应 DFT

Hydrogen-based mineral phase transformation mechanism investigation of pyrolusite ore

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International Journal of Minerals,Metallurgy and Materials 2024年第11期 2445-2457页

作者： Ruofeng Wang Shuai Yuan Yanjun Li Peng Gao Ru Li School of resources and Civil engineering Northeastern University National-local Joint engineering research center of High-efficient exploitation technology for Refractory Iron Ore resources

Pyrolusite comprises the foremost manganese oxides and is a major source of manganese production. An innovative hydrogenbased mineral phase transformation technology to pyrolusite was proposed, where a 96.44% distribution rate of divalent manganese(Mn2+) was observed at an optimal roasting temperature of 650°C, a roasting time of 25 min, and an H2concentration of 20vol%; under these conditions. The manganese predominantly existed in the form of manganosite. This study investigated the generation mechanism of manganosite based on the reduction kinetics, phase transformation, and structural evolution of pyrolusite and revealed that high temperature improved the distribution rate, and the optimal kinetic model for the reaction was the random nucleation and growth model（reaction order, n = 3/2） with an activation energy（Ea） of 24.119 kJ·mol-1. Throughout the mineral phase transformation, manganese oxide from the outer layer of particles moves inward to the core. In addition, pyrolusite follows the reduction sequence of MnO2→ Mn2O3→ Mn3O4→Mn O, and the reduction of manganese oxides in each valence state simultaneously proceeds. These findings provide significant insight into the efficient and clean utilization of pyrolusite.

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基于绿色生态开采的我国西部生态脆弱矿区“煤-水-热”共采范式（英文）

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engineering 2024年第7期 209-222页

作者：刘晓秀曾一凡武强孟世豪梁季月侯柱平 National engineering research center of coal Mine Water Hazard Controlling China University of Mining and Technology College of Geoscience and Surveying engineering China University of Mining and Technology University of mining and Technology (Beijing) Inner Mongolia research Institute

A substantial reduction in groundwater level,exacerbated by coal mining activities,is intensifying water scarcity in western China’s ecologically fragile coal mining ***’s national strategic goal of achieving a carbon peak and carbon neutrality has made eco-friendly mining that prioritizes the protection and efficient use of water resources *** on the resource characteristics of mine water and heat hazards,an intensive coal–water–thermal collaborative comining paradigm for the duration of the mining process is *** integrated system for the production,supply,and storage of mining companion resources is achieved through technologies such as roof water inrush prevention and control,hydrothermal quality improvement,and deep-injection geological *** active preventive and control system achieved by adjusting the mining technology and a passive system centered on multiobjective drainage and grouting treatment are suggested,in accordance with the original geological characteristics and dynamic process of water *** implementing advanced multi-objective drainage,specifically designed to address the‘‘skylight-type”water inrush mode in the Yulin mining area of Shaanxi province,a substantial reduction of 50%in water drillings and inflow was achieved,leading to stabilized water conditions that effectively ensure subsequent safe coal *** integrated-energy complementary model that incorporates the clean production concept of heat utilization is also *** findings indicate a potential saving of 8419 t of standard coal by using water and air heat as an alternative heating source for the Xiaojihan coalmine,resulting in an impressive energy conservation of 50.2%and a notable 24.2%reduction in carbon *** ultra-deep sustained water injection of100 m3.h-1in a single well would not rupture the formation or cause water leakage,and 7.87×10～5t of mine water could be effectively stored in the Liujiagou Formation,presenting a viab

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Roadmap for rechargeable batteries:present and beyond

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Science China Chemistry 2024年第1期67卷 13-42页

作者： Sen Xin Xu Zhang Lin Wang Haijun Yu Xin Chang Yu-Ming Zhao Qinghai Meng Pan Xu Chen-Zi Zhao Jiahang Chen Huichao Lu Xirui Kong Jiulin Wang Kai Chen Gang Huang Xinbo Zhang Yu Su Yao Xiao Shu-Lei Chou Shilin Zhang Zaiping Guo Aobing Du Guanglei Cui Gaojing Yang Qing Zhao Liubing Dong Dong Zhou Feiyu Kang Hu Hong Chunyi Zhi Zhizhang Yuan Xianfeng Li Yifei Mo Yizhou Zhu Dongfang Yu Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su Yu-Guo Guo Qiang Zhang Jun Chen Li-Jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences.Beijing 100049 China Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Green Chemical Reaction engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Chemistry and utilization of Carbon-Based Energy resources College of ChemistryXinjiang UniversityUrumqi 830046China Department of Chemical engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Rare Earth Resource utilization Changchun Institute of Applied ChemistryChangchun 130022China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Chemical engineering and Advanced Materials The University of AdelaideAdelaide 5000Australia Qingdao Industrial Energy Storage research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Frontiers Science center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China College of Chemistry and Materials Science Jinan UniversityGuangzhou 511443China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Department of Materials Science and engineering City University of Hong KongHong Kong 999077China Division of Energy Storage Dalian National Laboratory for Clean Energy(DNL)Dalian Institute of Chem

Rechargeable batteries currently hold the largest share of the electrochemical energy storage market,and they play a major role in the sustainable energy transition and industrial decarbonization to respond to global climate *** to the increased popularity of consumer electronics and electric vehicles,lithium-ion batteries have quickly become the most successful rechargeable batteries in the past three decades,yet growing demands in diversified application scenarios call for new types of rechargeable *** efforts are made to developing the next-generation post-Li-ion rechargeable batteries,which include,but are not limited to solid-state batteries,lithium–sulfur batteries,sodium-/potassium-ion batteries,organic batteries,magnesium-/zinc-ion batteries,aqueous batteries and flow *** the great achievements,challenges persist in precise understandings about the electrochemical reaction and charge transfer process,and optimal design of key materials and interfaces in a *** roadmap tends to provide an overview about the current research progress,key challenges and future prospects of various types of rechargeable *** computational methods for materials development,and characterization techniques will also be discussed as they play an important role in battery research.

关键词： energy storage rechargeable batteries battery materials electrochemistry

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Tomography of the dynamic stress coefficient for stress wave prediction in sedimentary rock layer under the mining additional stress

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International Journal of mining Science and Technology 2021年第4期31卷 653-663页

作者： Wenlong Shen Guocang Shi Yungang Wang Jianbiao Bai Ruifeng Zhang Xiangyu Wang Henan Key Laboratory for Green and Efficient mining&Comprehensive utilization of Mineral resources School of Energy Science and EngineeringHenan Polytechnic UniversityJiaozuo 454000China Key Laboratory of Deep coal Resource mining Ministry of Education State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyXuzhou 221116China Collaborative Innovation center of coal Work safety and clean High Efficiency utilization Jiaozuo 454000China

In this study,the tomography of dynamic stress coefficient(TDSC)was established based on a mechanical model of stress wave propagation in bedding planes and a mathematical model of the stress wave attenuation in rock *** reliability of the TDSC was verified by a linear bedding plane model and field ***,the TDSC in the dynamic stress propagation of bedding planes increases with the following conditions:(1)the increase of the normal stiffness of the bedding plane,(2)the increase of the incident angle of the stress wave,(3)the decrease of the incident frequency of the stress wave,or(4)the growth of three ratios(the ratios of rock densities,elastic moduli,and the Poisson’s ratios)of rocks on either side of bedding *** additional stress weakens TDSC linearly and slowly during the stress wave propagation in bedding planes,and the weakening effect increases with the growth of the three ***,the TDSC decreases exponentially in the rock mass as propagation distance *** a field case,the TDSC decreases significantly as vertical and horizontal distances increase and its wave range increases as vertical distance increases in the sedimentary rock layers.

关键词： Tomography of the dynamic stress coefficient Stress wave attenuation mining additional stress Sedimentary rock layer

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Insight into the microstructural evolution of anthracite during carbonization-graphitization process from the perspective of materialization

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International Journal of mining Science and Technology 2022年第6期32卷 1397-1406页

作者： Huihui Zeng Baolin Xing Yijun Cao Bing Xu Lei Hou Hui Guo Song Cheng Guangxu Huang Chuanxiang Zhang Qi Sun Henan Key Laboratory of coal Green Conversion College of Chemistry and Chemical EngineeringHenan Polytechnic UniversityJiaozuo 454003China State Collaborative Innovation center of coal Work safety and clean-efficiency utilization Jiaozuo 454003China Henan province Industrial Technology research Institute of resources and Materials Zhengzhou UniversityZhengzhou 450001China National engineering research center of coal Preparation and Purification China University of Mining and TechnologyXuzhou 221116China

Materialization of coal is one of effective and clean pathways for its utilization. The microstructures of coal-based carbon materials have an important influence on their functional applications. Herein, the microstructural evolution of anthracite in the temperature range of 1000–2800 ℃ was systematically investigated to provide a guidance for the microstructural regulation of coal-based carbon *** results indicate that the microstructure of anthracite undergoes an important change during carbonization-graphitization process. As the temperature increases, aromatic layers in anthracite gradually transform into disordered graphite microcrystals and further grow into ordered graphite microcrystals, and then ordered graphite microcrystals are laterally linked to form pseudo-graphite phase and eventually transformed into highly ordered graphite-like sheets. In particular, 2000–2200 ℃ is a critical temperature region for the qualitative change of ordered graphite crystallites to pseudo-graphite phase,in which the relevant structural parameters including stacking height, crystallite lateral size and graphitization degree show a rapid increase. Moreover, both aromaticity and graphitization degree have a linear positive correlation with carbonization-graphitization temperature in a specific temperature ***, after initial carbonization, some defect structures in anthracite such as aliphatic carbon and oxygen-containing functional groups are released in the form of gaseous low-molecular volatiles along with an increased pore structure, and the intermediates derived from minerals could facilitate the conversion of sp^(3) amorphous carbon to sp^(2) graphitic carbon. This work provides a valuable reference for the rational design of microstructure of coal-based carbon materials.

关键词： Anthracite Microstructural evolution Carbonization-graphitization Graphite microcrystals Materialization

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