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颗粒学报（英文版）
颗粒学报（英文版）

郭慕孙

双月刊

1674-2001

jcsp@home.ipe.ac.cn

010-82629146

100080

北京中关村北二条1号中科院过程所内

颗粒学报（英文版）/Journal China ParticuologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊以创精品与国际化为办刊方针，旨在反映中国颗粒学研究的最新成果、及时追踪国际颗粒学领域的最新动态。学报主要刊登国内外颗粒学领域中的研究、工程和应用方面的优秀原始论文，包括颗粒测试与表征、颗粒制备与处理、流态化、气溶胶和超微颗粒等。本刊不仅设有论坛、研究论文、研究简报等内容，还有书评、会议信息与报道、测试仪器进展等栏目，便于相关人士进行学术交流，并为科技成果的展示提供平台，信息十分丰富。本刊已陆续被美国化学文摘（CA），俄罗斯文摘杂志（AJ），剑桥科学文摘（CSA）以及中国科技论文与引文数据库(CSTPCD)收录。China PARTICUOLOGY, a bimonthly interdisciplinary journal in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The word PARTICUOLOGY was coined to correspond to its Chinese terminology, which denotes both the science and technology of particles. Although the journal is China-based, it serves as a medium for all accepted papers of international origin, especially the best papers representing current advances in the world. Besides scientific and engineering papers, the journal includes the following sections: R & D notes, Current events, Editorials reviews, Forum for comments, opinions and qualified speculations, News on books, instruments and meetings.Now， China Particuology has been indexed by CA, AJ , CSA and CSTPCD.??读者对象（Audiences）： 中国颗粒学会会员、国内外从事颗粒学和颗粒技术研究和生产的大专院校师生、科研院所及企业的研究人员和技术人员。 Member of Chinese Society of Particuology, and researchers or experts who are engaged in the study of particle sciences and technology coming from colleges, institutes and corporations all over the world.
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    Axial segregation characteristics and size-induced flow behavior of particles in a novel rotary drum with curved sidewalls

    Qiuhua MiaoWenchang ZhuYudong CaoPeng Huang...
    1-19页
    查看更多>>摘要：Particle mixing and segregation are common phenomena in rotary drums,which are challenging to be controlled and driven artificially in powder technology.In this work,the discrete element method(DEM)was applied to construct the novel rotary drum composed of different shaped curved sidewalls.By varying the operation parameters of particle and sidewall shapes as well as the length-to-diameter(L/D)ratio of drums,the axial mixing and segregation processes of binary size-induced particles were investigated.The results show that the axial flow velocity of the particle mixtures is noticeably weakened once the particle angularity increases,making the non-spherical particles to mix better in rotary drums compared to the spherical particles.Besides,in the short drums with size-induced spherical particles,the axial segregation characteristics are significantly enhanced by the convex sidewalls while suppressed by the concave sidewalls.However,for size-induced non-spherical particles,the axial segregation structure can be present in rotary drums with plane and concave sidewalls while not in drums with convex sidewalls.Moreover,the axial segregation band structure of spherical particles eventually increases proportionally with the increased drum L/D ratios.In contrast,the non-spherical particles cannot form obvious multi-proportional segregation bands.
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    Study on a semi-resolved CFD-DEM method for rod-like particles in a gas-solid fluidized bed

    Liping HeZhengxian LiuYongzhi Zhao
    20-36页
    查看更多>>摘要：Based on a semi-resolved CFD-DEM coupling method,this study proposed a method that uses the minimum distance between the fluid grid and the particle boundary as a reference value to determine the degree of influence of the target fluid grid on the particle's drag force.A fluidized bed of rod-like particles was chosen as a typical case to investigate the effect of different fluid grid scales on various fluidized bed characteristic parameters.The calculation performance of the semi-resolved and unre-solved CFD-DEM coupling algorithm on key fluidized bed characteristic parameters such as average pressure drop,particle frequency distribution with bed height,and particle orientation distribution were compared.It was found that the semi-resolved CFD-DEM coupling algorithm gradually obtained results with higher consistency with decreasing fluid grid scale for key parameters such as particle frequency distribution with bed height,particle orientation distribution,and time-history mixing index,exhibiting a phenomenon similar to grid independence in fluid simulation.By comparing with experimental results,it was verified that the semi-resolved CFD-DEM coupling algorithm can be applied to simulate multi-granular gas-solid systems with fluid grid scales equivalent to particle scales.This algorithm solves the limitation of fluid grid scale in the unresolved CFD-DEM coupling framework and improves the grid adaptability of the CFD-DEM coupling simulation algorithm.
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    Influence of crystal-transforming agent on the performance and mechanism of a-high-strength gypsum prepared from FGD gypsum

    Zhuoyue XuXiao WangBiao JinDawang Zhang...
    37-45页
    查看更多>>摘要：This paper investigates the impact of flue gas desulfurization(FGD)gypsum's crystal modifier on the characteristics and microcosmic mechanism of α-high strength gypsum.The results demonstrate that all three crystal modifiers can convert FGD gypsum to α-high-strength gypsum.Citric acid(CA)has the most significant influence on α-high-strength gypsum,and the prepared α-high-strength gypsum is short columnar,with an aspect ratio in the range of 1-3,and has a faster setting time,a larger specific surface area,and a smaller standard consistency,higher compressive strength,greater surface hardness,and smaller crystal particle size.The initial setting time of the α-high-strength gypsum manufactured with CA crystal modifier was decreased by 36％compared to the blank sample,the final setting time was lowered by 37.5％,and the water consumption of the standard consistency was reduced by 8％.The maximum strength is 32 MPa after 2 h,the absolute dry compressive strength is up to 38 MPa,and the surface hardness is improved by 24.43％.
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    Review of the research on the development and utilization of clay-type lithium resources

    Ruiqi XieZhihui ZhaoXiong TongXian Xie...
    46-53页
    查看更多>>摘要：Since the demands for lithium have been in explosive growth recently and several great clay lithium resources were founded in China,the development and utilization of clay-type lithium resources become a hot topic.In order to provide a guidance for the concentration and extracting lithium of clay-type lithium resources,this review systematically summarized the main types and characteristics of clay-type lithium resources and the research status of lithium extraction from clay lithium resources.Meanwhile,the flotation research status of the main mineral of clay lithium ore was also summarized.Furthermore,we discussed the difficulties in the development and utilization of clay-type lithium ore and put forward the subsequent research orientation.This paper can provide a guidance for the con-centration and extracting lithium of clay-type lithium resources in the future.
      原文链接:
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    CFD-DEM study of impacts of the porous distributor medium on fluidization characteristics of a 2D-fluidized bed

    Fei WangYishan ZengHao Yan
    54-73页
    查看更多>>摘要：Gas-solid bubbling fluidized beds are widely used in chemical,energy,construction,and other industrial fields due to their excellent fluidization performance.2D-fluidized beds with planar rectangular columns of finite thickness are widely used in fluidized bed studies,and it is essential for understanding the hydrodynamics of gas-particle systems.Moreover,the distributor(porous medium)at the bottom of the bed has a crucial influence on the fluidization performance of the 2D-fluidized bed.In this work,the fluidization mechanism and gas-solid dynamic characteristics of the fluidized bed under three porous media are studied by CFD-DEM coupled with the porous medium model,and the accuracy of numerical simulation is verified by a high-speed photography experiment.Results show that with the increase in the flow resistance of the porous medium,the average and standard deviation of the bubble diameter decrease,and the time and position of particles in the dead zone to participate in the core-annular flow advance.At a low fluidization velocity,the dead zone in the bed can be considerably reduced by increasing the flow resistance.
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    Numerical simulation of granular silicon growth and silicon fines formation process in polysilicon fluidized bed

    Guangkai GuGuoqiang LvWenhui MaShanlin Du...
    74-86页
    查看更多>>摘要：Operating conditions strongly affect the yield and quality of polysilicon in a polysilicon fluidized bed.In this study,a new model of polysilicon fluidized bed was established using the Euler-Euler model coupled with population balance model(PBM),which was combined with fluid flow,heat,and mass transfer models,while considering the scavenging effect of silicon fines.The effects of different operating conditions on the deposition and formation rates of silicon fines were investigated.Results show that the model can correctly describe the particle growth process in the fluidized bed of polysilicon.The silicon fines and the interphase velocity difference show"N"-and"M"-shaped distributions along the axial direction,respectively.The particle temperature and concentration near the wall are higher than those in the central region.The decomposition of silane in the bottom region of the bed is dominated by het-erogeneous deposition.The scavenging of silicon fines occurs in the dilute-phase region.The effects of operating conditions,i.e.inlet gas temperature,silane composition,and gas velocity,on the reactor performance were also explored comprehensively.Increasing the inlet gas composition and velocity enhances the formation rates of solid silicon and fines.Increasing the inlet gas temperature promotes the growth of solid silicon and inhibits the formation of silicon fines.High fluidization ratio,low inlet silane concentration,and high inlet gas temperature enhance the selectivity of silicon growth.
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    Biosynthesis of gold nanoparticles using aqueous extract of Ricinus cummunis leaves to augment catalytic degradation of organic dyes and study of its antifungal and antibacterial activities

    Mrinalini ParmarMallika Sanval
    87-98页
    查看更多>>摘要：In this study,biosynthesis of gold nanoparticles(Au NPs)using aqueous extract of fresh leaves of Ricinus cummunis plant is reported without the use of any synthetic chemical in the reaction process.The prepared NPs are mostly spherical in shape with some particles having triangular or hexagonal struc-tures.The average size of the particles as calculated using TEM data is 18 nm.The biosynthesised Au NPs were studied for their application in remediation of Congo Red,Methylene Blue,Reactive Red 120 and Rhodamine B dyes present in industrial effluents.The degradation of dyes was confirmed spectropho-tometrically using UV-Vis Spectrophotometer.Reactive Red 120 and Congo red dyes were most effec-tively reduced with 88％degradation.The Au NPs were further studied for their potential as an effective antifungal agent against fungal strains namely Candida albicans and Aspergillus fumigatus and antibac-terial properties against Bacillus subtilis(Gram+ve)and Pseudomonas aeruginosa(Gram-ve)bacterial strains.The MIC values being 7.8 and 15.6(μg/mL)for Bacillus subtilis and Pseudomonas aeruginosa respectively.
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    Theoretical study on the stability of nanobubbles and its verification in molecular dynamics simulation

    Sheng MiChaofeng HouWei Ge
    99-105页
    查看更多>>摘要：The stability of vapor nanobubbles in bulk liquid was investigated theoretically and the critical bubble size was derived from macroscale thermodynamic equations,below which the system destabilizes with sharp drop in pressure.This critical size was quantitatively verified in molecular dynamic simulation using the Lennard-Jones model of argon,where stronger attraction between the molecules at lower density is found to contribute most to the drop of system pressure and,as the Laplace pressure on the curved bubble interface fails to balance the pressure difference across the interface,the bubbles become unstable.The theoretical model could be extended to other systems where reliable equations of state and interfacial tension are available.
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    Optimization on crystallization process of the magnetic core lysozyme

    Lixia HouChunxiao QuMin SuZhihan Liang...
    106-113页
    查看更多>>摘要：The continuous growth of the biomedical market highlights the significance of improvement in the ef-ficiency of batch production for protein drug crystals.Herein,we investigated the effect of polymer-modified Fe3O4 nanoparticles on lysozyme(Lys)crystallization at different conditions,using function-alized Fe3O4 magnetic nanoparticles(Polymer C@Fe3O4)as nucleation agents.The study revealed that the surface charge density of Polymer C@Fe3O4 was highest at a modification mass ratio of Fe3O4 to Polymer C is 8∶3.This ratio facilitates the augmentation of electrostatic interaction and the promotion of crys-tallization.By adding 15％of the PolymerC@Fe3O4 prepared from Fe3O4 with an average particle size of 150 nm,the magnetic core lysozyme(M-Lys)crystals with an average particle size of 11.08 μm,narrow size distribution,and regular morphology were obtained in a yield of 82.42％within 60 min.
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    Real-time pore structure evolution difference between deep and shallow coal during gas adsorption:A study based on synchrotron radiation small-angle X-ray scattering

    Yingfeng SunShuaipeng ZhuFei XieChujian Han...
    114-123页
    查看更多>>摘要：Coal seam CO2 sequestration is an important option to address global warming.A better knowledge on coal pore structure evolution during gas adsorption can provide guidance for coal seams CO2 seques-tration.However,few investigations on the pore structure evolution differences between the deep and shallow coal were conducted during gas adsorption.In this study,based on the real-time synchrotron radiation small-angle X-ray scattering(SAXS)observation,the average pore diameter and pore surface fractal dimension evolution differences between deep and shallow coal were investigated from the as-pects of coal compositions and stress history.Two types of coal deformation(inner-swelling and outer-swelling)coexist during gas adsorption.Coal compositions have significant impact on the dominance of deformation type.The dominance of inner-swelling in deep coal is induced by the higher ash contents,and there is the decrease of average pore diameter during gas adsorption.The impact of stress-history(burial depth)on adsorption-induced deformation is more prominent than that of gas adsorption ca-pacity.In deep coal,the surface fractal dimension evolution presents a negative correlation with the evolution of pore diameters.In shallow coal,the surface fractal dimension evolution presents a Langmuir-type correlation with the adsorption time.
      原文链接:
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