Particuology最新文献_第10页

Structure, free surface energy parameters, and direct compaction properties of composite particles: Characterization and correlation analysis 复合粒子的结构、自由表面能参数和直接压实性能：表征和相关分析

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-25 DOI: 10.1016/j.partic.2025.02.008

Zhe Li , Shuangcui Fang , Zhijian Zhong , Abid Naeem , Lingyu Yang , Zhengji Jin , Yongmei Guan , Lihua Chen , Yanni Wu , Xu Zhang , Mengting Su , Weifeng Zhu , Liangshan Ming

{"title":"Structure, free surface energy parameters, and direct compaction properties of composite particles: Characterization and correlation analysis","authors":"Zhe Li , Shuangcui Fang , Zhijian Zhong , Abid Naeem , Lingyu Yang , Zhengji Jin , Yongmei Guan , Lihua Chen , Yanni Wu , Xu Zhang , Mengting Su , Weifeng Zhu , Liangshan Ming","doi":"10.1016/j.partic.2025.02.008","DOIUrl":"10.1016/j.partic.2025.02.008","url":null,"abstract":"<div><div>This study aimed to compare and analyze the effects of different modifiers on the structure, free surface energy parameters, and direct compaction properties of composite particles (CPs) prepared by co-spray drying and to explore the correlation among structure, free surface energy parameters, and direct compaction properties of CPs. CPs with <em>Puerariae lobatae radix</em> were prepared by adding different modifiers. The structure, free surface energy parameters, and direct compaction properties of CPs were characterized. Furthermore, Pearson correlation analysis and artificial neural network methods were used to evaluate the correlation among structure, free surface energy parameters, and direct compaction properties of CPs. The results showed that different modifiers exhibited variegated effects on the structure, free surface energy parameters, and direct compaction properties of CPs. Pearson correlation analysis showed that the particle size distribution, uniformity, and brightness were positively correlated with polar components and polarity index, with statistical significance (P < 0.01). The polar components and polarity index were positively correlated with flowability and disintegration time, and negatively correlated with compactibility, with statistical significance (P < 0.01). Overall, these findings contribute to better establishing a theoretical model among structure, free surface energy parameters, and direct compaction properties of CPs and provide a theoretical basis for predicting material properties.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"99 ","pages":"Pages 80-91"},"PeriodicalIF":4.1,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drawdown and suspension of corn straw in the non-Newtonian fluid in stirred tank 玉米秸秆在搅拌槽内非牛顿流体中的沉降和悬浮

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-22 DOI: 10.1016/j.partic.2025.02.006

Chao Song , Xuejun Hu , Shuang Yang , Jinxiao Xu , Chang Chen , Guangqing Liu

{"title":"Drawdown and suspension of corn straw in the non-Newtonian fluid in stirred tank","authors":"Chao Song , Xuejun Hu , Shuang Yang , Jinxiao Xu , Chang Chen , Guangqing Liu","doi":"10.1016/j.partic.2025.02.006","DOIUrl":"10.1016/j.partic.2025.02.006","url":null,"abstract":"<div><div>Due to the low density and hydrophobicity, the corn straw (CS) particles tend to float on the liquid surface in the anaerobic digester, deteriorating the bioconversion efficiency and process stability. Although the mechanical mixing is widely used in digesters, the drawdown and suspension of CS in the non-Newtonian slurry have not been sufficiently studied. This paper investigated the effect of particle size, liquid viscosity, solid phase mass fraction, impeller type and off-bottom distance on the just-drawdown rotational speed (<em>N</em><sub>jd</sub>), complete drawdown rotational speed (<em>N</em><sub>cd</sub>) and cloud depth (<em>CD</em>) of dry and wet straw particles in the stirred tank. The results showed that the distribution of dry and wet straw in the stirred tank significantly differed due to differences in density and wettability. The models built by dimensional analysis and machine learning were suitable for accurate predictions of specific variables. Based on the model analysis, the <em>N</em><sub>jd</sub> of dry straw was mainly affected by the liquid viscosity, impeller type and off-bottom distance, as these factors determined the flow field of liquid phase for its drawdown. <em>N</em><sub>jd</sub> of wet straw was related to the liquid viscosity and <em>N</em><sub>cd</sub> was influenced by impeller off-bottom distance. The <em>CD</em> of dry and wet straw particles were both affected by rotational speed, impeller type, and liquid viscosity, which were related to the mean flow and turbulence intensity in the tank. The results provide valuable references for the design and operation of mixing configurations for low-density feedstocks in the anaerobic digester.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"99 ","pages":"Pages 173-183"},"PeriodicalIF":4.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of different components in cement raw meal on carbothermal reduction of NOx in flue gas: An experimental study 水泥生料中不同组分对烟气中NOx碳热还原效果的实验研究

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-22 DOI: 10.1016/j.partic.2025.02.003

Xiaowei Wang , Jun Cai , Rui Chen , Qiangqiang Ren

{"title":"Effect of different components in cement raw meal on carbothermal reduction of NOx in flue gas: An experimental study","authors":"Xiaowei Wang , Jun Cai , Rui Chen , Qiangqiang Ren","doi":"10.1016/j.partic.2025.02.003","DOIUrl":"10.1016/j.partic.2025.02.003","url":null,"abstract":"<div><div>In China, the cement industry is the third largest source of NO<sub><em>x</em></sub> emissions after thermal power generation and transportation industries. Flue gas carbothermal reduction denitrification technology was proposed by the author team in previous research, and had been proved to be an effective method to cut NO<sub><em>x</em></sub> emissions from coal-fired cement kiln. Based on previous research work, a series of tube furnace experiments were conducted to further clarify the impact laws of different components in cement raw meal (CRM) on NO<sub><em>x</em></sub> reduction when using this method in the present work. Compared with the situation that only pulverized coal exists, adding only calcium carbonate had a slight inhibitory effect on NO reduction, and the maximum reduction efficiency of NO (<em>η</em><sub>max</sub>) dropped to 63.79% from 66.67%. The addition of oxides such as SiO<sub>2</sub>, MgO, Al<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub> into the mixture of pulverized coal and CaCO<sub>3</sub> had an impact on the reduction of NO. Overall, metal oxides promoted the reduction of NO, while SiO<sub>2</sub> inhibited the reduction of NO. For positive promotion, Fe<sub>2</sub>O<sub>3</sub> had the most significant effect on the reduction of NO, and <em>η</em><sub>max</sub> reached 89.71% when the addition amount was 4% compared to 63.79% before addition. The promoting effect of metal oxides on NO reduction is: Fe<sub>2</sub>O<sub>3</sub>>MgO>Al<sub>2</sub>O<sub>3</sub>. In addition to Fe<sub>2</sub>O<sub>3</sub>, the influencing law of addition amount of MgO and Al<sub>2</sub>O<sub>3</sub> on NO reduction had also been revealed. The outputs achieved in this study will provide a reference for how to reasonably adjust the ratio of CRM when the flue gas carbothermal reduction denitrification technology is applied into cement industry.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"99 ","pages":"Pages 23-33"},"PeriodicalIF":4.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lithium was extracted from lithium-poor clay ores after short calcination by oxalic acid leaching 采用草酸浸出法从贫锂粘土矿石中提取锂

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-20 DOI: 10.1016/j.partic.2025.01.019

Fengyuan Wang , Yuchun Yang , Min Yang, Yanling Tian, Hong Yuan

{"title":"Lithium was extracted from lithium-poor clay ores after short calcination by oxalic acid leaching","authors":"Fengyuan Wang , Yuchun Yang , Min Yang, Yanling Tian, Hong Yuan","doi":"10.1016/j.partic.2025.01.019","DOIUrl":"10.1016/j.partic.2025.01.019","url":null,"abstract":"<div><div>Limited research is available on lithium extraction technology for clay-type lithium deposits with relatively low lithium content. In this study, we investigated the effects of lithium extraction from lithium-poor clay ores using oxalic acid. The ore was first calcined and then fully mixed with solid oxalic acid powder, followed by water leaching. Raw material analysis revealed that the primary lithium-containing mineral was cookeite, with a lithium oxide content of 0.57%. The X-ray diffraction (XRD) patterns of the mineral phase before and after calcination at different temperatures revealed that the structure of the ores calcined at 300 and 400 °C was similar to that of the original ore. However, in the XRD patterns of the ore calcined at 500 °C, certain characteristic peaks of cookeite weakened or disappeared. Upon calcination at 600 °C, the hydroxyl group of cookeite was removed, amorphous phase of cookeite appeared, and maximum leaching yield was attained. Using response surface methodology optimization, the optimal calcination temperature and time; acid-to-ore and water-to-ore ratios; and reaction temperature and time were 600 °C and 2 min; 1:1 and 4 mL/g; and 95 °C and 6 h, respectively. The leaching yield under these optimal conditions was 92.33%. The results of this study revealed that lithium ions could be effectively extracted from mines using oxalic acid.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"98 ","pages":"Pages 204-214"},"PeriodicalIF":4.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Motion and force characteristics of wet particles in a fluidized bed 流化床中湿颗粒的运动和力特性

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-19 DOI: 10.1016/j.partic.2025.01.017

Zexin Zhong , Xiaoke Ku

引用次数: 0

Propagation characteristics and laws of RDX dust detonation RDX粉尘爆轰传播特性及规律

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-19 DOI: 10.1016/j.partic.2025.01.018

Hanzheng Gong, Qi Zhang, Jingkun Zou

{"title":"Propagation characteristics and laws of RDX dust detonation","authors":"Hanzheng Gong, Qi Zhang, Jingkun Zou","doi":"10.1016/j.partic.2025.01.018","DOIUrl":"10.1016/j.partic.2025.01.018","url":null,"abstract":"<div><div>Compared with industrial dust, explosions involving hexogen (RDX) dust result in more severe consequences. Studying the explosion characteristics of RDX dust cloud in confined spaces is essential for improving industrial safety and military disaster prevention. In this study, a two-dimensional pipeline model was established using numerical simulation methods to investigate the effects of RDX concentration, ignition energy, pipeline length, and length-to-diameter ratio on the characteristics of RDX dust explosions. The results show that the essence of RDX dust explosions is a violent gas-phase chain exothermic reaction, with high-energy decomposition at its core. The explosion intensity increases non-linearly as ignition energy increases. For RDX concentrations of 100, 200, 300, and 400 g/m<sup>3</sup>, the time required to form a stable detonation decreases as the RDX dust concentration increases. When the ignition energy is in the range of 57.23 mJ to 10.1 J, changes in ignition energy have no significant impact on the energy released by the RDX explosion if the ignition energy is small. However, at high ignition energy, the explosive hazard of RDX increases significantly. As pipeline length increases, the stable detonation pressure and propagation velocity of the detonation wave essentially unchanged, but the rebound pressure on the pipeline wall gradually increases. In cases of high length-to-diameter ratios, a flame front reversal phenomenon occurs during the combustion process of RDX dust. In addition, a new dust rapid-filling method was developed using the C language, which enables rapid and uniform dust filling in combustion simulations.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"98 ","pages":"Pages 215-230"},"PeriodicalIF":4.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Probing the fine structures of low atomic number catalysts by using electron energy loss spectroscopy 用电子能量损失谱法探测低原子序数催化剂的精细结构

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-16 DOI: 10.1016/j.partic.2025.01.015

Junnan Chen , Ming Lu , Qinhua Gu , Bingsen Zhang

{"title":"Probing the fine structures of low atomic number catalysts by using electron energy loss spectroscopy","authors":"Junnan Chen , Ming Lu , Qinhua Gu , Bingsen Zhang","doi":"10.1016/j.partic.2025.01.015","DOIUrl":"10.1016/j.partic.2025.01.015","url":null,"abstract":"<div><div>Low atomic number catalysts have gained widespread application in areas such as environmental management, catalytic reactions, and energy transformation, thanks to their cost-effectiveness and superior chemical stability. An in-depth exploration of the intricate structures of these catalysts, establishing their structure-activity relationships, and revealing their catalysis mechanisms are fundamental for developing novel and efficient catalysts. Electron energy loss spectroscopy (EELS), a pivotal electron microscopy technique, uniquely excels in dissecting the fine structures of low atomic number catalysts, since its high spatial resolution and acute sensitivity to elements with low atomic numbers. This review summarizes the role of EELS in probing the fine structures of low-Z catalysts, encompassing the technological underpinnings, advantages, and specific use cases in catalyst analysis. EELS can pinpoint the location, chemical surroundings, and electronic attributes of low-Z elements in catalysts, thus offering crucial insights for demystifying catalytic mechanisms and formulating innovative catalysts. Furthermore, this review delves into the potential advancements of EELS technology in the detailed structural study of low atomic number catalysts, hinting at a promising future for this research field.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"98 ","pages":"Pages 154-171"},"PeriodicalIF":4.1,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recoater design for a helical motion binder jet additive manufacturing 3D printer 螺旋运动粘结剂喷射增材制造3D打印机重涂器设计

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-14 DOI: 10.1016/j.partic.2025.01.012

Tarek Mesto, Tugdual Le Néel, Jean-Yves Hascoët

引用次数: 0

Controlling fragment size distribution for modelling the breakage of multi-sphere particles 控制碎片尺寸分布，模拟多球颗粒破碎

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-13 DOI: 10.1016/j.partic.2025.01.014

Chao Zhang , Connor O'Shaughnessy , Sadaf Maramizonouz , Vasileios Angelidakis , Sadegh Nadimi

{"title":"Controlling fragment size distribution for modelling the breakage of multi-sphere particles","authors":"Chao Zhang , Connor O'Shaughnessy , Sadaf Maramizonouz , Vasileios Angelidakis , Sadegh Nadimi","doi":"10.1016/j.partic.2025.01.014","DOIUrl":"10.1016/j.partic.2025.01.014","url":null,"abstract":"<div><div>Voro-Pack, an open-source code is introduced to reconstruct real particles into multi-sphere clusters consisting of fragments with controlled size distributions, enabling experiment-informed fragment size distributions (FSD). Two types of silica sand are employed to evaluate the performance of the code, where FSD data are obtained through laser diffraction and sieving, and particle shape information is obtained through micro computed tomography. The results show that the particle sizes and shapes of the multi-sphere clusters generated by the code are in good agreement with those of real particles. It is found that the fragment sizes in the multi-sphere clusters aligned more closely with the real FSD data when laser diffraction data were used as input, compared to sieving. The volume ratio of the multi-sphere clusters to the actual particles is a key factor influencing the size distribution of fragments, with better matching to the actual FSD data when the volume ratio exceeds 0.5 and approaches 1.0. Additionally, the particle shape characteristics do not significantly affect the FSD data in the code-generated clusters. These findings suggest that the Voro-Pack code is an effective tool in reconstructing multi-sphere clusters for particles of various morphologies, providing valuable insights into modelling the breakage of granular materials.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"98 ","pages":"Pages 105-116"},"PeriodicalIF":4.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of drying process of non-spherical particle in a pulsed fluidized bed 非球形颗粒在脉冲流化床中的干燥过程研究

IF 4.1 2区材料科学

Particuology Pub Date : 2025-02-12 DOI: 10.1016/j.partic.2025.01.013

Hanyu Jin , Shuai Wang , Yurong He

引用次数: 0