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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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    Performance of elastic ball screen-cleaning device based on DEM-MBD coupling simulation

    Yubin BiQingbin SongJingyu ZhuJintao Feng...
    247-263页
    查看更多>>摘要：In seed breeding,the vibrating screen used for pre-sowing grading parental seeds often has the problem of poor self-purification rate.Using elastic balls to clean the plugging seeds and ensure the self-purification of the screen is a viable technical solution.To clarify and improve the operating perfor-mance of the elastic ball particles,a DEM-MBD coupling simulation model of the elastic ball screen-cleaning device was established in this study,and a numerical simulation analysis of the complex mo-tion process was carried out.The mechanism of action of the elastic ball was explained more completely from the aspects of excitation force and energy transfer.Through the Plackett-Burman test,it was determined that the vibration frequency has the most significant effect on the excitation force.Multiple linear regression analysis was performed on each factor and the mathematical relationship equation.It was found that when the maximum excitation force was greater than 7 N and the average excitation force was greater than 2 N,the self-purification rate was greater than 95％ .The self-purification rate was then increased to 99.81％ by variable frequency tests.The variable frequency achieved better self-purification effect.
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    Antibacterial properties of cerium oxide nanoparticles:Recent progresses and future challenges

    Heishu ZhengJiajing TangYanhua WeiXi Deng...
    264-283页
    查看更多>>摘要：Use of cerium oxide nanoparticles(CeO2 NPs)to optimize management of resistant microorganisms has received increasing attention due to non-specific activity of inorganic antibacterial agents.Under-standing the mechanism of action is essential to elucidating the antibacterial activity of CeO2 NPs against bacteria.Therefore,this review aims to summarize the antibacterial mechanisms of CeO2 NPs and correlate the structural and physicochemical properties of CeO2 NPs to their antibacterial activity.We further summarize the strategies for the improvement of the antibacterial performance of CeO2 NPs and provide our opinions for future challenges as a conclusion.
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    Theoretical study on the synergistic mechanism of Fe-Mn in sodium-ion batteries

    Yang YouMingliang Yuan
    284-290页
    查看更多>>摘要：This article conducts first-principles calculations to initially explore the construction of two configura-tions,NaFeO2(NFO)and NaMnO2(NMO),and studies the mixing enthalpies under different Fe-Mn ratios.The results indicate that NaFe3/8Mn5/8O2(NFMO)exhibits the most thermodynamically stable structure.Subsequent calculations on the mixing enthalpies and volume changes during the sodium extraction process for NFO,NMO,and NFMO configurations are presented,along with the partial density of states(PDOS)and Bader charges of transition metals(TM)and oxygen.These calculations reveal the synergistic mechanism of Fe and Mn.Fe and Mn can engage in more complex electron exchanges during sodium extraction,optimizing the internal electron density distribution and overall charge balance,thereby stabilizing the crystal structure and reducing the migration of Fe3+to the sodium layers during deep sodium extraction.The interaction between Fe's 3d electrons and Mn's 3d electrons through the shared oxygen atoms'2p orbitals occurs in the Fe-Mn-O network.This interaction can lead to a rebalancing of the electron density around Mn3+atoms,mitigating the asymmetric electron density distribution caused by the d4 configuration of the lone Mn3+and suppressing the Jahn-Teller effect of Mn3+.Moreover,the synergistic effects between Fe and Mn can provide a more balanced charge dis-tribution,reducing extreme changes to the charge state of oxygen atoms and decreasing the irreversible oxygen release caused by anionic redox reactions during deep sodium extraction,thereby enhancing the material's stability.This in-depth study of the interaction mechanism at the microscopic level when co-doping Fe and Mn offers valuable insights for the rational design and development of high-performance cathode materials.
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    Particle size distribution in a multi-zone circulating fluidized bed polymerization reactor

    Mohammadhossein HadadiyanNavid MostoufiReza Marandi
    291-299页
    查看更多>>摘要：This research focuses on modeling a multi-zone circulating reactor(MZCR)in the polypropylene pro-duction process.In these reactors,designed for polyolefin production,small catalyst particles(20-300 pm)initiate polymerization in the presence of monomer gas.The reactor consists of two main regions:the riser and the downer.The riser operates in the fast fluidization and the downer is in the moving bed regime.Employing the two-fluid model with the Eulerian-Eulerian approach,the dynamics of both solid and gas phases were modeled by applying Newton's laws of motion and assuming spherical particles.The population balance of particles within the reactor was also coupled with the equations of motion.The simultaneous solution of these equations provides valuable insights into particle and fluid behavior,revealing trends such as the growth of polymer particles.Furthermore,the impact of various operating conditions was explored.This study also examined the effects of design parameters(gas inlet velocity,average inlet diameter,and temperature)on the system performance.For instance,it was shown that in the case where the solid circulation flux is 30 kg/(m2 s)the velocity of particles in the bed in-creases from 0.4 at the inlet to 1.1 m/s in the fully developed zone,when it is 43 kg/(m2 s)the velocity of particles increases from 0.3 to 1.4 m/s,and when it is 55 kg/(m2 s),it is increased from 0.22 to 1.5 m/s.Additionally,trends in particle size distribution based on temperature adjustments were revealed.This study showed that higher temperatures accelerate the polymerization reaction rate,promoting faster growth kinetics and the formation of larger particles.
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    Particle segregation mechanism of S-D system in a rotating drum

    Erliang XiaoWei ZhangZhipeng ChiRan Li...
    300-308页
    查看更多>>摘要：Complex segregation occurs in a binary particle system with differing particle sizes and densities,particularly when the larger particles are heavier(S-D system,i.e.,size minus density system).Pre-dicting the segregation pattern driven by multiple mechanisms simultaneously is often challenging.This study explores the segregation mechanisms in a quasi-2D circular drum containing a S-D system,realizing a transition between the S-core and Core-and-band patterns by adjusting the drum rotation speed.During the transition of the segregation pattern,only the S-core pattern chiefly driven by the percolation mechanism is initially observed.As the rotation speed increases,the buoyancy mechanism and particle diffusion gradually strengthen,jointly driving the formation of the Core-and-band pattern.A dimensionless strength ratio,λ=H/h,where H and h respectively represent the diffusion and buoyancy strengths at length scales,is introduced to elucidate this transition.The Core-and-band pattern emerges when λ reached 1.4.
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    Room-temperature hydrogen adsorption in Pd nanoparticle decorated UiO-66-NH2 via spillover

    Jingchuan WangJunhong LuoYong YaoJiangfeng Song...
    309-315页
    查看更多>>摘要：To improve room-temperature hydrogen storage,palladium(Pd)nanoparticles were innovatively decorated by carbon bridge onto the amino-group functioned Zr-terephthalate metal-organic framework(MOF)UiO-66 to reduce the diffusion energy barrier and then improve the hydrogen spillover effect.Powder X-ray diffraction shows broad Pd peak and retained UiO-66-NH2 integrity after Pd decoration.The hydrogen uptake capacity show that UiO-66-NH2-Pd exhibits best hydrogen storage performance than UiO-66-NH2 and pristine UiO-66.The hydrogen up taken in Pd decorated UiO-66(UiO-66-NH2-1 Pd)was close to 4 wt％ under 20 MPa at room temperature.Density functional theory(DFT)calculations show that hydrogen adsorption energy of UiO-66-NH2-Pd was-0.5897 eV,which was much lower than that of UiO-66-NH2(-0.3716 eV)and UiO-66(-0.2975 eV).Ultimately,Pd decorated NH2 group func-tioned UiO-66 enable improve storage capacities through hydrogen spillover under ambient conditions which could satisfy the demand for sustainable energy,especially for the long-term storage energy media.
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    A reduced model for particle calcination for use in DEM/CFD simulations

    Lucas MiegTorben BergoldEnric Illana MahiquesViktor Scherer...
    316-327页
    查看更多>>摘要：We treat the accurate simulation of the calcination reaction in particles,where the particles are large and,thus,the inner-particle processes must be resolved.Because these processes need to be described with coupled partial differential equations(PDEs)that must be solved numerically,the computation times for a single particle are too high for use in simulations that involve many particles.Simulations of this type arise when the Discrete Element Method(DEM)is combined with Computational Fluid Dynamics(CFD)to investigate industrial systems such as quicklime production in lime shaft kilns.We show that,based on proper orthogonal decomposition and Galerkin projection,reduced models can be derived for single particles that provide the same spatial and temporal resolution as the original PDE models at a considerably reduced computational cost.Replacing the finite volume particle models with the reduced models results in an overall reduction of the reactor simulation time by about 40％ for the sample system treated here.
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    Properties,hazards and valuable metal recovery technologies of red mud:A review

    Peixin DuPeng WangXueqian ZhangGuangwu Wen...
    328-348页
    查看更多>>摘要：This review presents a summary of the research conducted thus far on the recovery of various types of valuable metals from red mud.The composition,properties,environmental hazards,and current status of comprehensive utilization of red mud were studied.A number of studies have been conducted on the use of red mud as a modifying additive for cement,the development of various catalysts based on red mud,and the recovery of various valuable metals from red mud.Furthermore,we examine several techniques for extracting various types of valuable metals from red mud,including pyrometallurgical recovery,wet leaching recovery,and emerging biobased technology recovery.We investigate the underlying principles,processes,research progress,and the potential for industrial application of these methods,and assess the advantages and disadvantages of each from the perspectives of economic and environmental benefits.Although these methods have certain disadvantages,in general,the recovery of various types of valuable metals from red mud is an effective way to solve the problem of red mud and the supply of metal raw materials.In conclusion,this paper presents an overview of the current state of red mud development and utilization,as well as the various methods employed for the recovery of valuable metals from red mud.
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    Reconstruction of particle distribution for tomographic particle image velocimetry based on unsupervised learning method

    Duanyu ZhangHaoqin HuangWu ZhouMingjun Feng...
    349-363页
    查看更多>>摘要：The development of deep learning has inspired some new methods to solve the 3D reconstruction problem for Tomographic Particle Image Velocimetry(Tomo-PIV).However,the supervised learning method requires a large number of data with ground truth as training information,which is very difficult to gather from experiments.Although synthetic datasets can be used as alternatives,they are still not exactly the same with the real-world experimental data.In this paper,an Unsupervised Reconstruction Technique based on U-net(UnRTU)is proposed to reconstruct volume particle distribution explicitly.Instead of using ground truth data,a projection function is used as an unsupervised loss function for network training to reconstruct particle distribution.The UnRTU was compared with some traditional algebraic reconstruction algorithms and supervised learning method using synthetic data under different particle density and noise level.The results indicate that UnRTU outperforms these traditional ap-proaches in both reconstruction quality and noise robustness,and is comparable to the supervised learning methods AI-PR.For experimental tests,particles dispersed in cured epoxy resin are moved by an electric rail with a certain speed to obtain the ground truth data of particle velocity.Compared with other algorithms,the reconstructed particle distribution by UnRTU has the best reconstruction fidelity.And the accuracy of the 3D velocity field estimated by UnRTU is 12.9％ higher than that from the traditional MLOS-MART algorithm.It demonstrates significant potential and advantages for UnRTU in 3D recon-struction of particle distribution.Finally,UnRTU was successfully applied to the high-speed planar cascade airflow field,demonstrating its applicability for measuring complex fluid flow fields at higher particle density.
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    Coating powder beds with liquids and foams based on viscous formulations using a twin screw mixer:A continuous process study

    Mohamed S.MangaDimitrios KontziampasisMustafa Al-MaqdadSean Clifford...
    364-376页
    查看更多>>摘要：Coating with viscous formulations has been essential in numerous industries as it can be a means for providing functionalization,additional properties,as well as other benefits.However,there have been scarce studies that have investigated and proposed methodologies in literature.Continuous coating of powders with viscous liquids poses as a promising technology,which has been mentioned in some studies,but has not yet been thoroughly investigated.This paper employs the use of image processing and analysis,in combination with statistical analysis of particles to evaluate the effectiveness of foams and liquids as a means of coating powder beds.Two different sizes of twin screw mixers that are working in continuous operation are employed,and a new continuous foaming device is fabricated and used for the experiments of coating.The effect of materials and process parameters(as for example rotational speed,and flowrate)on the quality of coating are investigated.Image analysis is used to assess the coating quality.The results clearly showcase the potential of using twin screw mixers for coating pur-poses and not only for mixing.The hypothesis that using large bubble foams to improve the coating of viscous liquids on particles is proven correct,as they provide higher quality coatings compared to their equivalent liquids,when used in the twin screw mixer.Surprisingly,using a larger scale twin screw mixer,does not show a substantial effect on the mixing,regarding quality,however there is still a requirement for mix optimization for achieving scale-up of this process.These results provide a new pathway for coating powders with viscous formulations in industrial applications,requiring less energy and effort in this process,and can pave the way towards introducing more sustainable industrial methodologies for coating.
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