Advanced Powder Technology最新文献_第6页

Regulation of self-assembled microsphere structure and performance through binder synergy 通过粘合剂协同作用调节自组装微球的结构和性能

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-23 DOI: 10.1016/j.apt.2024.104677

Shanghao Du, Fan Wang, Jiahui Yang, Zhihua Xue, Yu Lei, Renqi Gao, Chongwei An, Jingyu Wang, Bidong Wu

{"title":"Regulation of self-assembled microsphere structure and performance through binder synergy","authors":"Shanghao Du, Fan Wang, Jiahui Yang, Zhihua Xue, Yu Lei, Renqi Gao, Chongwei An, Jingyu Wang, Bidong Wu","doi":"10.1016/j.apt.2024.104677","DOIUrl":"10.1016/j.apt.2024.104677","url":null,"abstract":"<div><div>Composite energetic material structure plays a critical role in combustion and detonation performance. In this study, boron (B)/copper oxide (CuO) composite microspheres with regular morphology, uniform elemental distribution, high circularity, and good charging performance were prepared using droplet microfluidic technology (DMT) with nitrocellulose (NC) and fluorine rubber (F<sub>2604</sub>) as binder solutions. The effects of binder synergy on the structure, thermal properties, mechanical sensitivity, and combustion performance of the microspheres were systematically investigated. The results show that the apparent and internal structures, as well as the dimensions of the microspheres, can be modulated by adjusting the binder ratio and the concentration of fluorine rubber. This adjustment allowed for the transformation of the microspheres from bowl-like to spherical forms, improving their charging performance. Additionally, the exothermic peak and output flame temperature of the samples exhibited regular changes after adjusting the binder, enabling controlled regulation of burning speed. This study provides insights into how binder synergy affects the structure and performance of energetic microspheres, offering valuable reference points for the preparation of other composite energetic materials.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104677"},"PeriodicalIF":4.2,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the roller screen efficiency to classify green iron pellets using DEM simulation, novel roll design and implementing banana configuration 利用 DEM 仿真、新颖的辊子设计和香蕉配置提高辊筛分级绿色铁球团的效率

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-21 DOI: 10.1016/j.apt.2024.104675

Mehrshad Asghari , Mohammad Noaparast , Mohammad Jahani Chegeni

{"title":"Improving the roller screen efficiency to classify green iron pellets using DEM simulation, novel roll design and implementing banana configuration","authors":"Mehrshad Asghari , Mohammad Noaparast , Mohammad Jahani Chegeni","doi":"10.1016/j.apt.2024.104675","DOIUrl":"10.1016/j.apt.2024.104675","url":null,"abstract":"<div><div>Roller screens play a decisive character in the efficiency of pelletizing circuits and induration furnaces. Unlike vibrating screens, there have been no studies on roller screens to determine their capacity and dimensions. Most studies have utilized the discrete element method (DEM) simulation to assess roller screen performance by employing a spherical shape and the Hertz-Mindlin elastic model. However, this approach is unsuitable due to green pellets’ non-spherical shape and elastic–plastic properties. This study introduces the incorporation of the actual shape of green pellets and a hysteretic spring elastoplastic contact model. In this research work, a novel design of rolls with a grooved surface was recommended for the first time, resulting in a Total Screening Efficiency (TSE) of 96.4% compared to 87.1% for rolls with a smooth surface. Additionally, while exploring the impact of the decks number on the roller screen, a new design, known as the banana roller screen, was introduced. Under similar conditions, the TSE increased by 1.22% compared to the general roller screen type. It was also found that the roller screen’s capacity is directly related to the diameter, speed of rotation, and the number of rolls, while it has a reverse relationship with TSE and deck angle.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104675"},"PeriodicalIF":4.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anticorrosive pigment for smart and green protective coatings: An alkyd resin coating incorporating lanthanum-loaded hydroxyapatite, derived from a phosphate mining industry by-product 用于智能绿色防护涂料的防腐颜料：掺入了从磷矿开采业副产品中提取的羟基磷灰石镧的醇酸树脂涂料

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-21 DOI: 10.1016/j.apt.2024.104666

Mohammad Elmourabit , Youssef Zarki , Brahim Arfoy , Ibrahim Allaoui , Ahmed AitAghzzaf , Abdelmonaim Azzouz , Dounia Bouchta , Faiza Chaouket , Khalid Draoui

{"title":"Anticorrosive pigment for smart and green protective coatings: An alkyd resin coating incorporating lanthanum-loaded hydroxyapatite, derived from a phosphate mining industry by-product","authors":"Mohammad Elmourabit , Youssef Zarki , Brahim Arfoy , Ibrahim Allaoui , Ahmed AitAghzzaf , Abdelmonaim Azzouz , Dounia Bouchta , Faiza Chaouket , Khalid Draoui","doi":"10.1016/j.apt.2024.104666","DOIUrl":"10.1016/j.apt.2024.104666","url":null,"abstract":"<div><div>Intelligent anti-corrosive coatings have gained considerable interest as a method to protect metals. This approach offers an effective strategy for mitigating corrosion by providing advanced control over the process. In this research, lanthanum-loaded hydroxyapatite pigment (La-HAp) was successfully synthesized using phosphate sludge (PS) waste. The pigment was incorporated into an alkyd resin coating to provide smart corrosion protection for mild steel exposed to a saline solution. The synthesized pigments were characterized using various analytical techniques, including FTIR, XRD, and SEM−EDS. The inhibitory performance of La-HAp on mild steel submerged in a 3% NaCl solution was evaluated using linear polarization and EIS techniques. The findings demonstrated substantial inhibitory effectiveness, achieving 82% inhibition efficiency. Further investigation compared the protective capabilities of modified (C-La-HAp) and reference (C-Ref) alkyd coatings on carbon steel using EIS. The results indicated significant corrosion protection enhancement with 5% La-HAp, showing a polarization resistance of 19.7 MΩ·cm<sup>2</sup> after four weeks of immersion in the aggressive solution. This corrosion resistance is primarily attributed to the formation of a barrier against the corrosive environment and the trapping of Cl<sup>-</sup> ions by the HAp, accompanied by the release of La, phosphate, and calcium ions. La ions react with OH<sup>-</sup> ions produced in the cathodic zones to form a uniform protective layer of Lahydroxides, while iron orthophosphates provide additional protection at anodic sites. This synergistic blend of mechanisms imparts intelligent corrosion-inhibiting properties to the alkyd resin, effectively guarding against the damaging effects of corrosive agents.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104666"},"PeriodicalIF":4.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational fluid dynamics (CFD) simulation of CO2 methanation in a shell-and-tube reactor with boiling water cooling 沸水冷却壳管式反应器中的二氧化碳甲烷化计算流体动力学（CFD）模拟

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-21 DOI: 10.1016/j.apt.2024.104671

Yonghui Li, Jinxuan An, Sheng Wang, Zhongfeng Geng, He Dong

{"title":"Computational fluid dynamics (CFD) simulation of CO2 methanation in a shell-and-tube reactor with boiling water cooling","authors":"Yonghui Li, Jinxuan An, Sheng Wang, Zhongfeng Geng, He Dong","doi":"10.1016/j.apt.2024.104671","DOIUrl":"10.1016/j.apt.2024.104671","url":null,"abstract":"<div><div>CO<sub>2</sub> methanation plays a crucial role in carbon cycling and CCU technologies. However, this reaction is highly exothermic, thus requiring significant thermal management. In this investigation, the DEM method was employed to construct a realistic packed bed structure, allowing for the quantification of the radial particle distribution and radial activity ratio. The influence of internal diffusion on the methanation process was simulated using a single-particle model. Building on this, a single shell-and-tube reactor model with a three-dimensional geometric structure was developed. Boiling water was used as the coolant to simulate the reaction and heat transfer processes within the CO<sub>2</sub> methanation reactor. The effects of inert particles, feed flow rate, H<sub>2</sub>/CO<sub>2</sub> feed ratio, and operating pressure on the reaction and heat transfer processes were investigated. This study provides important theoretical and technical support for the design optimization and industrial application of CO<sub>2</sub> methanation reactors.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104671"},"PeriodicalIF":4.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the microstructure of chickpea and navy bean flour blends produced by roller milling: Insights from Fourier transform mid-infrared spectroscopy, scanning electron microscopy and synchrotron X-ray techniques 研究辊碾法生产的鹰嘴豆和海军豆混合粉的微观结构：傅立叶变换中红外光谱、扫描电子显微镜和同步辐射 X 射线技术的启示

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-20 DOI: 10.1016/j.apt.2024.104674

Chitra Sivakumar , Jarvis A. Stobbs , Kaiyang Tu , Chithra Karunakaran , Jitendra Paliwal

{"title":"Investigating the microstructure of chickpea and navy bean flour blends produced by roller milling: Insights from Fourier transform mid-infrared spectroscopy, scanning electron microscopy and synchrotron X-ray techniques","authors":"Chitra Sivakumar , Jarvis A. Stobbs , Kaiyang Tu , Chithra Karunakaran , Jitendra Paliwal","doi":"10.1016/j.apt.2024.104674","DOIUrl":"10.1016/j.apt.2024.104674","url":null,"abstract":"<div><div>Flour blending ratios influence the micro- and molecular properties of flour, which, in turn, determine the essential structure-function relationships crucial for shaping ingredient functionality and creating customized end-products. Conventional laboratory-scale X-ray instruments, constrained by limited brightness and measurement time, present obstacles in investigating porosity, starch lamellar structure, and crystallinity in pulse flours. To address these challenges, this study uses synchrotron X-rays, laser diffraction, mid-infrared spectroscopy, and scanning electron microscopy to non-invasively examine micro and molecular changes in roller-milled chickpea and navy bean flour, accounting for flour blending ratios. The results illustrate a multimodal particle size distribution curve, with each flour blend displaying a distinctive morphology. Chickpea blends showed greater overall porosity than navy bean blends, while navy bean flour blends displayed slightly higher absorbance ratios. The macromolecular changes in flour properties as a result of blending unravel novel information that will be of immense use to food manufacturers.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104674"},"PeriodicalIF":4.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Prediction of particle mixing time in a rotary drum by 2D DEM simulations and cross-correlation” [Adv. Powder Technol. 33(4) (2022) 103512] 通过二维 DEM 模拟和交叉相关性预测旋转滚筒中的颗粒混合时间"[Adv. Powder Technol.

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-20 DOI: 10.1016/j.apt.2024.104676

W. Wu, K. Chen, E. Tsotsas

引用次数: 0

Development of granular neutral amino acids with calcium hydroxide composition 开发含有氢氧化钙成分的颗粒状中性氨基酸

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-19 DOI: 10.1016/j.apt.2024.104645

Min Kyung Kwon , Jun-Woo Kim , In Sung Lee , DongHyun Lee

{"title":"Development of granular neutral amino acids with calcium hydroxide composition","authors":"Min Kyung Kwon , Jun-Woo Kim , In Sung Lee , DongHyun Lee","doi":"10.1016/j.apt.2024.104645","DOIUrl":"10.1016/j.apt.2024.104645","url":null,"abstract":"<div><div>Amino acid granules for animal feed are typically produced by fermentation, evaporation and fluidized bed granulation with drying processes. Evaporation is one of the most energy-efficient processes to remove water. However, a fluidized bed granulation process with drying is a relatively energy-inefficient process to remove water. Improving solubility of amino acid is good strategy to increase the maximum achievable concentration in the evaporation process. An increase in the maximum achievable concentration can lead to energy saving by increasing the contribution of water removal by evaporation. In this study, a manufacturing method of neutral amino acid granule for feed additive using calcium hydroxide addition was developed. Since solubility of neutral amino acid is increased with increasing amount of calcium hydroxide, adding calcium hydroxide is a useful method to improve energy efficiency of the evaporation process. It was found that adding calcium hydroxide reduced steam consumption levels of tryptophan, threonine, valine and isoleucine by 8.0%, 28.0%, 26.3% and 15.6%, respectively.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104645"},"PeriodicalIF":4.2,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Roles of water film thickness and CaCl2/TEA dosage in mobility and hardening performance of cement-based materials 水膜厚度和 CaCl2/TEA 用量对水泥基材料流动性和硬化性能的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-19 DOI: 10.1016/j.apt.2024.104652

Chen Jixi , Jia Jinqing , Zhu Mengyu

{"title":"Roles of water film thickness and CaCl2/TEA dosage in mobility and hardening performance of cement-based materials","authors":"Chen Jixi , Jia Jinqing , Zhu Mengyu","doi":"10.1016/j.apt.2024.104652","DOIUrl":"10.1016/j.apt.2024.104652","url":null,"abstract":"<div><div>Water film thickness (WFT) has been discovered to significantly affect the performance of cement-based materials in previous studies. The purpose of this study is to apply the WFT theory to cement-based materials with early-strength agents. To this end, calcium chloride (CaCl<sub>2</sub>) and triethanolamine (TEA) were used to prepare 32 groups of fresh pastes with varying water-cement ratios and different dosages of CaCl<sub>2</sub>/TEA. These pastes were tested for flow performance, setting time, and hardening performance. The comprehensive effects of WFT and early strength agents on the mobility and hardened properties of cement-based materials were discussed from the obtained results. Results show that WFT is still one of the main elements affecting the performance of cement-based materials in the presence of early strength agents. CaCl<sub>2</sub> increased the packing density of the paste, enhancing the excess water between particles and enlarging the WFT, which positively impacted the performance of the paste. In contrast, TEA decreased the WFT, increased the cohesion between particles, and declined the fluidity. Furthermore, as the water-cement (w/c) ratio raised, the WFT of the paste also increased. This caused cement particles to be enveloped in excess water, improving slip capacity and consequently increasing fluidity but reducing strength. Overall, WFT and admixture dosage can effectively predict the fluidity and mechanical properties of the paste.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104652"},"PeriodicalIF":4.2,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solvothermal phase selection of Cr3+-doped (NH4)xScF(3+x) compounds (x = 0, 1, 3), structure, and NIR luminescence 掺杂 Cr3+ 的 (NH4)xScF(3+x) 化合物（x = 0、1、3）的溶热相选择、结构和近红外发光特性

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-19 DOI: 10.1016/j.apt.2024.104673

Sihan Feng , Zhiyuan Pan , Yun Wang , Xuejiao Wang , Qi Zhu , Ji-Guang Li

引用次数: 0

Interfacial interaction mechanism between alkali metal ions and cationic/anionic surfactants and insight into low-rank coal flotation 碱金属离子与阳离子/阴离子表面活性剂的界面相互作用机理及对低阶煤浮选的启示

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-09-16 DOI: 10.1016/j.apt.2024.104640

Rensheng Li , Zijuan Xie , You Zhou , Wanlin Wang , Xiahui Gui

{"title":"Interfacial interaction mechanism between alkali metal ions and cationic/anionic surfactants and insight into low-rank coal flotation","authors":"Rensheng Li , Zijuan Xie , You Zhou , Wanlin Wang , Xiahui Gui","doi":"10.1016/j.apt.2024.104640","DOIUrl":"10.1016/j.apt.2024.104640","url":null,"abstract":"<div><p>In the low-rank coal flotation process, the modification and adhesion behavior of particles can be reflected by the interaction of the phase interface. Therefore, the interfacial mechanism of alkali metal ions (K<sup>+</sup>, Na<sup>+</sup>) in gas-surfactant solution (DTAC, SDS) and the coal-liquid interfaces were investigated by dynamic surface tension and contact angle measurements. The results showed that the salt ions can affect the adsorption kinetic behavior of surfactants at the gas–liquid interface as well as the wetting performance of the solution on coal. Besides, through the interfacial energy and wetting work could judge the tendency of the reactivity and flotability of a solution. In this case, the adsorption experiments, SEM, XPS, probe method and hydrophilicity test were further carried out to verify the surface information of the modified coal. The results illustrated that the DTAC molecule absorbed on coal is realized by the N<sup>+</sup>–OH<sup>−</sup> ionic bond, which is firstly proved in the coals modification; while the SDS molecule can be absorbed by O–HO hydrogen bond, which were also proved by the surface free energy analysis. Moreover, the flotability performance of modified coal on the residue solution showed the DTAC could increase the hydrophobicity of the coal, while the SDS-modified coal should be paid attention to the occurrence of hydrophobic tail adsorption.</p></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 11","pages":"Article 104640"},"PeriodicalIF":4.2,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0