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阴阳离子组合捕收剂对微细粒赤铁矿与石英浮选分离的研究

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矿产保护与利用 2024年第1期44卷 33-39页

作者：贾蕗繁罗溪梅王云帆宋振国周永锋蒋旺强洪欣昆明理工大学国土资源工程学院云南昆明650093 省部共建复杂有色金属资源清洁利用国家重点实验室云南昆明650093 矿物加工科学与技术国家重点实验室北京100160 昆明理工大学冶金与能源工程学院云南昆明650093

考察了十二烷基磺酸钠(SDS)、十二烷基硫酸钠(SLS)、十二烷基苯磺酸钠(SDBS)以及油酸钠(NaOL)四种阴离子捕收剂分别与阳离子捕收剂十二胺(DDA)组合对浮选分离微细粒(-18μm)赤铁矿和石英的影响。单矿物实验表明,与单一DDA相比,四种阴离... 详细信息

考察了十二烷基磺酸钠(SDS)、十二烷基硫酸钠(SLS)、十二烷基苯磺酸钠(SDBS)以及油酸钠(NaOL)四种阴离子捕收剂分别与阳离子捕收剂十二胺(DDA)组合对浮选分离微细粒(-18μm)赤铁矿和石英的影响。单矿物实验表明,与单一DDA相比,四种阴离子捕收剂分别与DDA组合使用能够降低赤铁矿的浮选回收率,有利于减少赤铁矿的抑制剂用量。十二胺与阴离子捕收剂组合使用时,四种阴离子捕收剂对微细粒赤铁矿和石英分离效果为:SDS>NaOL>SLS/SDBS。其中,DDA+SDS组合捕收剂在一定质量比例条件下组合使用的效果最优,在最佳浮选条件下(pH=7,捕收剂用量为20 mg/L,m(DDA)∶m(SDS)=2∶1,抑制剂用量为20 mg/L),泡沫产品中石英回收率达到91.05%,赤铁矿回收率仅为6.7%,有利于赤铁矿反浮选。人工混合矿物浮选实验结果表明,使用DDA+SDS组合捕收剂(m(DDA)∶m(SDS)=2∶1)获得精矿Fe品位为45.7%、回收率为87.0%,与单一DDA相比,分别提高了1.7、18.6百分点,有利于提高赤铁矿和石英的分离效果,DDA+SDS可作为微细粒赤铁矿和石英浮选分离的优良阴阳离子捕收剂。

关键词：赤铁矿石英十二胺阴阳离子组合捕收剂浮选

阴离子捕收剂与DTAC浮选分离赤铁矿和石英研究

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非金属矿 2024年第3期47卷 10-12,17页

作者：杨山龙罗溪梅周永锋郭鑫刘星雨宋振国王云帆昆明理工大学国土资源工程学院云南昆明650093 省部共建复杂有色金属资源清洁利用国家重点实验室云南昆明650093 矿物加工科学与技术国家重点实验室北京100160 昆明理工大学冶金与能源工程学院云南昆明650093

以赤铁矿和石英两种纯矿物为研究对象,研究了阴离子捕收剂与十二烷基三甲基氯化铵(DTAC)组合使用对浮选分离赤铁矿和石英的影响,其中阴离子捕收剂分别为十二烷基磺酸钠(SDS)、十二烷基苯磺酸钠(SDBS)、油酸钠(NaOL)和十二烷基硫酸钠(SLS... 详细信息

以赤铁矿和石英两种纯矿物为研究对象,研究了阴离子捕收剂与十二烷基三甲基氯化铵(DTAC)组合使用对浮选分离赤铁矿和石英的影响,其中阴离子捕收剂分别为十二烷基磺酸钠(SDS)、十二烷基苯磺酸钠(SDBS)、油酸钠(NaOL)和十二烷基硫酸钠(SLS)。结果表明,与单一DTAC捕收剂相比,SDS或SLS与DTAC组合使用时,精矿Fe品位和Fe回收率明显提高,但捕收剂总用量较大。与单一DTAC相比,当SDBS与DTAC组合使用(质量比1∶2)时,在相同的浮选条件下,即捕收剂用量为20 mg/L,pH值为7,淀粉用量为20 mg/L,获得的精矿Fe品位相近,Fe回收率由81.44%提至85.96%。这为赤铁矿反浮选提供了一定的参考价值。

关键词：赤铁矿石英浮选十二烷基三甲基氯化铵组合捕收剂

Study on Effect of Lizardite Crystal Chemistry on Surface Properties and Flotability

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Study on Effect of Lizardite Crystal Chemistry on Surface Pr...

Optimal regulation of flexible loads in rural residential buildings considering mobile batteries:A case study in Shaanxi Province

2011国际粉体技术与应用论坛

作者： Qiang Li Wanzhong Yin Mingbao Liu Yingqiang Ma ximei luo Institute of Mining Technology Liaoning Technical University College of Resources and Civil Engineering Northeastern University

Lizardite was as the research mineral in the paper,and the surface properties of lizardite and magnesium in the surface properties of the solution and the the natural flotability of lizardite were *** surface of lizardite easily produced unsaturated groups,and lizardite in the slurry can be generated in the Mg,MgOH,HSiO,HSiO,HSiO ions and acid molecules and Mg（OH） precipitation,that result in the high PZC of lizardite,and the natural flotability of lizardite was poor in sodium oleate and DDA flotation system.

关键词： Lizardite Crystal chemistryre Surface properties Flotation

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Building Simulation 2024年第7期17卷 1065-1083页

作者： Xi luo WenceShi School of Building Services Science and Engineering Xian University of Architecture and Technology(XAUAT)Xi'an 710055China State Key Laboratory of Green Building Xi'an 710055China

While the grid-connected capacity of rural household photovoltaics is increasing rapidly,achieving dynamic supply-demand matching despite fluctuations in solar energy is *** the rapid development of rural electrification,battery-powered technologies,such as electric vehicles and electric agricultural machinery,are becoming increasingly popular in rural *** this context,utilizing idle mobile batteries to assist in energy storage for rural residential buildings offers a new way to solve the problem of dynamic supply-demand *** this study,a field survey was conducted on several typical fruit-growing villages in the Central Shaanxi Plain in Shaanxi Province of *** rural households were selected to calculate the electricity loads of the residential buildings,with due consideration to the intervention of mobile *** the premise of installing 3 kW household photovoltaic systems in rural households,an economical efficiency-oriented model was built for the optimal regulation of flexible *** results were compared in the context of two patterns of electricity consumption,i.e.,unidirectional charging of mobile batteries from buildings and bidirectional charging and discharging between mobile batteries and *** bidirectional pattern significantly increased the photovoltaic consumption of typical rural households on various typical ***,during both scenarios of not implementing time-of-use and implementing time-of-use,the typical day of the winter slack farming season exhibited the best photovoltaic consumption effect among all types of typical ***,the bidirectional pattern also result in a significant increase in the annual electricity sales revenues for typical rural households.

关键词： demand-side response flexible load mobile battery household photovoltaics

浅议铜硫矿选矿工艺流程制定中的矿物组成因素

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中国矿业 2019年第A2期28卷 360-362,368页

作者：宋振国罗溪梅北京矿冶科技集团有限公司矿物加工科学与技术国家重点实验室北京102628 省部共建复杂有色金属资源清洁利用国家重点实验室云南昆明650093

矿石的矿物组成是重要的工艺矿物学参数,是决定矿石选别回收工艺的重要因素之一。本文初步总结分析了铜硫矿中有价伴生组分和典型难处理脉石对其选矿工艺流程制定的影响,以期获得铜硫矿石矿物组成特征与铜硫矿选矿工艺流程间的内在联系... 详细信息

矿石的矿物组成是重要的工艺矿物学参数,是决定矿石选别回收工艺的重要因素之一。本文初步总结分析了铜硫矿中有价伴生组分和典型难处理脉石对其选矿工艺流程制定的影响,以期获得铜硫矿石矿物组成特征与铜硫矿选矿工艺流程间的内在联系,进而为铜硫矿选矿工艺流程智能决策过程中决策树的制定提供依据。

关键词：铜硫矿矿物组成选矿工艺流程

Energy consumption simulations of rural residential buildings considering differences in energy use behavior among family members

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Building Simulation 2024年第8期17卷 1335-1358页

作者： Xi luo Lina Du School of Building Services Science and Engineering Xi'an University of Architecture and Technology(XAUAT)Xi'an 710055China State Key Laboratory of Green Building Xi'an 710055China

The“average occupant”methodology is widely used in energy consumption simulations of residential buildings;however,it fails to consider the differences in energy use behavior among family *** on a field survey on the Central Shaanxi Plain,to identify the energy use behavior patterns of typical families,a stochastic energy use behavior model considering differences in energy use behavior among family members was proposed,to improve the accuracy of energy consumption simulations of residential *** results indicated that the surveyed rural families could be classified into the following four types depending on specific energy use behavior patterns:families of one elderly couple,families of one middle-aged couple,families of one elderly couple and one child,and families of one couple and one ***,on typical summer days,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 25.39%and 28%lower than the simulation results obtained by the model proposed in this study for families of one elderly couple and families of one middle-aged couple,and 13.05%and 23.05%higher for families of one elderly couple and one child,and families of one couple and one *** typical winter days,for the four types of families,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 21.69%,10.84%,1.21%,and 8.39%lower than the simulation results obtained by the model proposed in this study,respectively.

关键词： typical energy use behavior pattern differences in occupant behavior building energy consumption simulation stochastic energy use behavior simulation

Switching Behavior of Cascode GaN Under Influence of Gate Driver

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1816-1833页

作者： Bin luo Guangzhao luo Sihai Li School of Automation Northwestern Polytechnical UniversityXi’an 710072China

With high-frequency,low power dissipation and high-efficiency characteristics,Gallium nitride(GaN)power devices are of significant benefit in designing high-speed motor drives,as they improve performance and reduce ***,due to the cascode structure,coupling with the parasitics in gate driver and power circuits,power converters based on cascode GaN are prone to overshoot and oscillate on switching waveforms,which may lead to serious EMC problems,or even device *** complicated structure of cascode GaN device makes the gate driver design comparatively *** analytical model of the switching process considering gate driver parameters is proposed in this *** influence of gate driver parameters on switching behavior is investigated from the perspective of switching speed,waveform overshoot,and power ***-offs among overshoot,switching speed,and power loss are discussed;guidelines to design gate driver parameters are given.

关键词： Gallium nitride(GaN) gate driver oscillation and overshoot switching characteristics

Precision regulation of plant aromatic amino acid homeostasis

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Science China(Life Sciences) 2024年第6期67卷 1316-1317页

作者： Jie luo Yazhouwan National Laboratory(YNL) Sanya 572025China School of Breeding and Multiplication(Sanya Institute of Breeding and Multiplication) Hainan UniversitySanya 572025China

The aromatic amino acids(AAAs)phenylalanine(Phe),tyrosine(Tyr),and tryptophan(Trp)are not only building blocks of proteins,but also precursors of numerous primary and specialized metabolites(Schenck and Maeda,2018).For instance,Trp is a precursor of the phytohormone auxin and the plant defense compounds indole glucosinolates,while Phe serves as a precursor of lignin,coumarin and *** plant natural products such as morphine and vitamin E are derived from Tyr,and have been employed in human medicine and nutrition(Schenck and Maeda,2018;Wu et al.,2022;Yokoyama et al.,2021).

关键词： aromatic instance coumarin

In Situ Polymer Gel Electrolyte in Boosting Scalable Fibre Lithium Battery Applications

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Nano-Micro Letters 2024年第11期16卷 170-173页

作者： Jie luo Qichong Zhang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of SciencesSuzhou Institute of Nano-Tech and Nano-Bionics398 Ruoshui RoadSuzhou 215123People’s Republic of China

The poor interfacial stability not only deteriorates fibre lithium-ion batteries(FLBs)performance but also impacts their scalable *** efficiently address these challenges,*** Peng team proposed a generalized channel structures strategy with optimized in situ polymerization technology in their recent *** resultant FLBs can be woven into different-sized powering textiles,providing a high energy density output of 128 Wh kg^(-1) and simultaneously demonstrating good durability even under harsh *** a promising strategy expands the horizon in developing FLB with particular polymer gel electrolytes,and significantly ever-deepening understanding of the scaled wearable energy textile system toward a sustainable future.

关键词： High-performance fibre lithium batteries Gel electrolytes Channel structures Stable interface Scalable application