Powder Technology最新文献_第7页

CFD-DEM study on the effect of coarse aggregate characteristics on pipe blockage in concrete pumping

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-12 DOI: 10.1016/j.powtec.2025.120920

Rong Deng , Zhiwei Ye , Sizhong Li

{"title":"CFD-DEM study on the effect of coarse aggregate characteristics on pipe blockage in concrete pumping","authors":"Rong Deng , Zhiwei Ye , Sizhong Li","doi":"10.1016/j.powtec.2025.120920","DOIUrl":"10.1016/j.powtec.2025.120920","url":null,"abstract":"<div><div>Concrete pumping technology is widely applied in the construction industry, especially in high-rise buildings and large-span bridges. However, during the actual pumping, concrete may bleed or get segregated, leading to the blockage of a pipe. In order to improve the pumping efficiency and reduce the blockage risk, the flow of fresh concrete with a single-size coarse aggregate(CA) in pipe was simulated, and the effects of size and shape, and volume fraction of CA on the pipe blockage were studied using a Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) coupling method. The flow velocity, pressure distribution and flow state during the concrete pumping process were also analyzed for in-depth understanding of the flow behavior of concrete in the pumping pipe. It was proposed to use the peak pressure on the pumping pipe to characterize the risk of pipe blockage. The cause of pipe blockage formation was analyzed by tracking the movement law, mass and velocity distribution of CA. The obtained results show that local accumulation of CA at the peak pressure position can increase its concentration and decrease the average velocity, causing the peak pressure to rise and increasing the risk of pipe blockage. The risk of pipe blockage increases gradually with increasing size of CA. The most prone blockage takes place at the bend and shifts downward with increasing size of CA. The shape of CA has a lesser impact on the location of the blockage. However, as the shape changes from spherical to ellipsoidal to flaky, the peak pressure gradually increases, thus raising the risk of blockage. With increasing volume fraction of CA, the peak pressure also increases. In order to reduce the risk of pipe blockage, it is recommended that the size of CA should be less than 20 mm, the volume fraction should be no more than 30 %, and the shape should be spherical or ellipsoidal as far as possible.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120920"},"PeriodicalIF":4.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637321","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

Dust suppression performance and dust suppression mechanism of microbial induced struvite precipitation technology

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-12 DOI: 10.1016/j.powtec.2025.120905

Peidong Zhao , Xiangming Hu , Yanyun Zhao , Mingyue Wu , Yue Feng , Jingqian Wang , Ziyuan Wu

{"title":"Dust suppression performance and dust suppression mechanism of microbial induced struvite precipitation technology","authors":"Peidong Zhao , Xiangming Hu , Yanyun Zhao , Mingyue Wu , Yue Feng , Jingqian Wang , Ziyuan Wu","doi":"10.1016/j.powtec.2025.120905","DOIUrl":"10.1016/j.powtec.2025.120905","url":null,"abstract":"<div><div>Microbially Induced Calcium Carbonate Precipitation (MICP) is regarded as a promising dust suppression method. However, the MICP bio-cementation process driven by urease releases ammonia, causing adverse environmental effects. This study explores a novel microbial dust suppressant based on microbial-induced struvite precipitation technology. Compared with traditional MICP technology, microbial induced struvite precipitation can convert ammonium ions into environmentally friendly biological struvite. Biological struvite not only plays a role in fixing ammonia, but also plays a role in consolidating dust like carbonate precipitation in MICP. The results indicate that the microbial dust suppressant prepared with a molar ratio of K<sub>2</sub>HPO<sub>4</sub>·3H<sub>2</sub>O to MgCl<sub>2</sub> of 1:2 can fix 69.92 % of ammonia, achieve a wind erosion resistance rate of 99.83 %, and a rain erosion resistance rate of 87.97 %, demonstrating excellent ammonia fixation and dust suppression performance. The microbial dust suppressant produced by this technology can generate struvite and MgCO<sub>3</sub>. The formed granular and lamellar mineralization products are embedded between dust particles, effectively filling the pores of coal dust. Molecular dynamics simulations suggest that struvite and magnesium carbonate molecules play a crucial role in the physical adsorption process and energy changes of coal dust molecules. In conclusion, the microbial dust suppressant prepared using microbial-induced struvite technology exhibits excellent dust suppression and ammonia fixation properties. In future research, the applicability of this technology in the field of dust suppression can be enhanced by reducing costs, increasing ammonia fixation rate, and regulating the production of by-product magnesium hydrogen phosphate.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120905"},"PeriodicalIF":4.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687458","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

Multi-pore approximation model for simulation of macroscopic mechanical properties and failure behavior of coal under uniaxial compression

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-12 DOI: 10.1016/j.powtec.2025.120888

Mingjun Jiang , Yingke Liu , Zhaoxi Long , Xiangyang Bu , Fengchao Wang , Yue Niu

{"title":"Multi-pore approximation model for simulation of macroscopic mechanical properties and failure behavior of coal under uniaxial compression","authors":"Mingjun Jiang , Yingke Liu , Zhaoxi Long , Xiangyang Bu , Fengchao Wang , Yue Niu","doi":"10.1016/j.powtec.2025.120888","DOIUrl":"10.1016/j.powtec.2025.120888","url":null,"abstract":"<div><div>Under the influence of coal formation, evolution, and mining disturbances, the pores and cracks are the main characteristics of coal. Understanding how these characteristics affect the macroscopic properties and failure evolution of coal is crucial for ensuring safe coal mining. This study presents a multi-pore approximation model to investigate the impact of pore parameters, such as porosity and pore distribution, on the macroscopic properties, stress distribution, and failure characteristics of porous coal. Results show that higher porosity weakens the coal strength and accelerates its failure, while pore distribution significantly influences stress distribution and failure patterns. Internal element failure mirrors pore distribution, with vertical variations in pore distribution being the primary factor influencing the total number of failure elements. Furthermore, porosity and pore distribution co-influence coal failure, with a quadratic relationship observed between porosity and the total number of failure elements.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120888"},"PeriodicalIF":4.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641959","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

Evaporation characteristics of light-induced nanofluid droplets on hydrophobic surfaces

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-11 DOI: 10.1016/j.powtec.2025.120918

Chenjun Huang , Jinxin Zhang , Caiyi Xiong , Haoxiang Wei , Xiaorong Wang , Genzhu Jiang

{"title":"Evaporation characteristics of light-induced nanofluid droplets on hydrophobic surfaces","authors":"Chenjun Huang , Jinxin Zhang , Caiyi Xiong , Haoxiang Wei , Xiaorong Wang , Genzhu Jiang","doi":"10.1016/j.powtec.2025.120918","DOIUrl":"10.1016/j.powtec.2025.120918","url":null,"abstract":"<div><div>Microfluidic applications under light conditions are utilized, particularly in biomedicine, chemical reactions, and sensing technologies. However, the influence of light on fluid dynamics, heat transfer, and mass transfer remains insufficiently explored, and its potential for optimizing microfluidic system performance has not been comprehensively examined. In this work, the evaporation kinetics of nanofluid droplets on superhydrophobic surfaces induced by light illumination was visually investigated. The superhydrophobic surfaces were prepared on three kinds of metal surfaces by laser scanning technique and chemical modification. The effects of metal materials and surface modification treatments on surface morphology, surface wettability and photothermal conversion properties were analyzed. The evaporation morphology and deposition pattern of nanofluid droplet on different superhydrophobic surfaces were experimentally investigated. The results showed that due to nanofluids and micro-nanostructures, evaporation process of nanofluid droplet on the superhydrophobic surface under light illumination was divided into three stages: constant contact angle (CCA), constant contact radius (CCR), and mixed mode. Non-uniform micro-nanostructures reduces evaporation time of nanofluid droplet under light illumination. The droplet vibration phenomenon and nanoparticle deposition patterns indicate that light can inhibit the coffee ring effect. This work can provide a theoretical basis for nanofluid evaporation manipulation.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120918"},"PeriodicalIF":4.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620205","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

Preparation of blast furnace burden utilizing sinter return fines: Cold-bonded pellet forming and comprehensive burden structure optimization

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-11 DOI: 10.1016/j.powtec.2025.120921

Tao Yang , Qing-hai Yu , Wen-sheng Liu , Neng-ge Chen , Yu-qi Kong , Jie Lei , Yi-fan Wang , Hong-ming Long

{"title":"Preparation of blast furnace burden utilizing sinter return fines: Cold-bonded pellet forming and comprehensive burden structure optimization","authors":"Tao Yang , Qing-hai Yu , Wen-sheng Liu , Neng-ge Chen , Yu-qi Kong , Jie Lei , Yi-fan Wang , Hong-ming Long","doi":"10.1016/j.powtec.2025.120921","DOIUrl":"10.1016/j.powtec.2025.120921","url":null,"abstract":"<div><div>The utilization of sinter return fines in preparing cold-bonded pellets (CBPs-RF) as blast furnace burden presents a promising approach. This study experimentally investigated the impact of raw material moisture content and molding pressure on pellet performance. A grading index was introduced to characterize particle size distribution. The experimental findings demonstrated that the porosity of CBPs-RF was notably reduced from 17.3 % to 11.4 % when subjected to a grading index of 0.5. This substantial decrease in porosity was primarily attributed to the iron ore concentrate effectively filling the interstitial spaces among the coarser return fines, thereby enhancing the material's compactness. Furthermore, a composite binder tailored for sinter return fines was developed; organic binder B contains abundant polar functional groups, which facilitate chemical adsorption onto the surface of iron ore compounds, thereby ameliorating the contact heterogeneity between inorganic binder A and the return fines. The crosslinking reaction between organic binder B and inorganic binder A yields an interwoven three-dimensional network structure, underpinning the enhanced binding strength of the composite binder. Compared to conventional sinters, CBPs-RF demonstrated superior performance in low-temperature reduction degradation (RDI<sub>+3.15</sub> > 90 %) and reduction swelling index reduction (RSI < 10 %). Its advantages stem from the dispersed arrangement of sinter return fines and their effective synergy with soft binders and porous iron fine layers, mitigating crack propagation and expansion during reduction, thus alleviating volumetric expansion. Comprehensive burden studies indicate that incorporating 5.0 % CBPs-RF exhibits favorable softening and dripping properties, providing crucial insights for the efficient utilization of sinter return fines as a blast furnace burden.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120921"},"PeriodicalIF":4.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620204","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

Simulation research of proppant flowback and control method after hydraulic fracturing based on CFD-DEM

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-11 DOI: 10.1016/j.powtec.2025.120913

Mingkun Lv , Tiankui Guo , Ming Chen , Yongzan Liu , Xin Yang , Caili Dai , Zhanqing Qu

{"title":"Simulation research of proppant flowback and control method after hydraulic fracturing based on CFD-DEM","authors":"Mingkun Lv , Tiankui Guo , Ming Chen , Yongzan Liu , Xin Yang , Caili Dai , Zhanqing Qu","doi":"10.1016/j.powtec.2025.120913","DOIUrl":"10.1016/j.powtec.2025.120913","url":null,"abstract":"<div><div>The proppant flowback after hydraulic fracturing has long existed in reservoir or enhanced geothermal systems. This not only reduces fracturing efficiency and damages equipment, but also generates solid waste. Due to the unclear understanding of the proppant flowback mechanisms, the control measures effectiveness is highly uncertain. This paper established a model that considers the synchronous changes of fracture closure and flow field based on the CFD-DEM. Numerical simulation research of near-well fractures including perforation was conducted. The results show that particles near and above the perforations are more prone to flowback. The critical fracture width to particle diameter ratio (<em>w</em>/<em>d</em>) for uniformly sized spherical particles is 2.55. Controlling the flowback velocity within the fracture to below 0.01 m/s allows the particles to form stable bridges. Non-spherical particles and particles with non-uniform diameters have less flowback and smaller changes in fracture width. For particles with non-uniform diameters, the minimum particle diameter is the main factor determining the particle flowback ratio. The more evenly the proportion of particles of different diameters is distributed, the stronger the ability of the proppant to resist the fracture closure. Particles with a larger size distribution range have a lower flowback ratio and a wider propped fracture width. Rod-shaped particles effectively resist the pressure of fracture closure, maintaining a larger fracture width. Perforating in the upper part of the reservoir, using low-viscosity fluids to reduce the near-well fracture width, filling the near-well fractures with large-sized, wide size distribution (such as 20/70-mesh) or non-spherical particles (such as rod-shaped proppant) could help alleviate the proppant flowback.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120913"},"PeriodicalIF":4.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686959","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 arc erosion resistance of AgNi electrical contact material by a three-dimensional graphene network

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-09 DOI: 10.1016/j.powtec.2025.120902

Yuan Fei , Xianhui Wang , Nana Zhao , Hangyu Li , Jituo Liu , Haiping Li , Yanru Qiu

{"title":"Improving arc erosion resistance of AgNi electrical contact material by a three-dimensional graphene network","authors":"Yuan Fei , Xianhui Wang , Nana Zhao , Hangyu Li , Jituo Liu , Haiping Li , Yanru Qiu","doi":"10.1016/j.powtec.2025.120902","DOIUrl":"10.1016/j.powtec.2025.120902","url":null,"abstract":"<div><div>The electrical contacts are subjected to severe arc erosion with advance towards high power and miniaturization of electrical devices, and the increasingly stringent requirements are put forward for electrical contact materials. To enhance the arc erosion resistance of AgNi electrical contact materials under large current conditions, the Ag-10Ni electrical contact material reinforced by three-dimensional graphene (3D-Gr) was fabricated by the combination of in-situ growth of Gr on Ni particles surface and powder metallurgy in this work. Electrical contact performances were evaluated using an electrical contact test system. The microstructure and eroded morphologies were characterized, the influence of 3D-Gr on the physical and electrical properties was analyzed, and the arc erosion mechanism was discussed as well. The results demonstrate that the incorporation of 3D-Gr simultaneously enhances the electrical conductivity, hardness and arc erosion resistance of Ag-10Ni electrical contact material. As compared to the Ag-10Ni electrical contact material without Gr, the electrical conductivity and hardness of the 3D-Gr reinforced Ag-10Ni electrical contact material are increased by 7.2 % and 10.9 %, respectively. Moreover, the Ag-10Ni electrical contact material with 3D-Gr exhibits lower arc energy, shorter arc duration and reduced mass loss. The superior arc erosion resistance can be ascribed to the formation of 3D-Gr, which offers a continuous heat-transferred pathway, mitigates the oxidation of Ni and reduces the splashing of the molten pool.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120902"},"PeriodicalIF":4.5,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600865","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 “Investigating Proppant Transport in Slickwater Fracture using Direct Numerical Simulations (DNS) and Two-Fluid Models (TFM)” [Powder Technology 446 (2024) 120151].

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-09 DOI: 10.1016/j.powtec.2025.120877

Xiaoqi Li , Dongxiao Zhang , Xiaolong Yin

引用次数: 0

Preparation and performance study of a new type of high-moisturizing composite dust suppressant

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-09 DOI: 10.1016/j.powtec.2025.120848

Shuang Che , Qi Sun , Gujian Wang , Botao Li , Chuanwang Cheng , Weize Sun , Chenxi Zhao

{"title":"Preparation and performance study of a new type of high-moisturizing composite dust suppressant","authors":"Shuang Che , Qi Sun , Gujian Wang , Botao Li , Chuanwang Cheng , Weize Sun , Chenxi Zhao","doi":"10.1016/j.powtec.2025.120848","DOIUrl":"10.1016/j.powtec.2025.120848","url":null,"abstract":"<div><div>A new composite dust suppressant with high moisture retention capacity has been developed to address the problem of dust pollution in open-pit limestone mines. Using single factor and response surface methodology, the optimum proportions of composite dust suppressants were determined, and the physicochemical properties, anti-evaporation properties, and weather resistance of the dust suppressants were measured and analyzed. The results showed that the optimal dust suppressant was a mixture of 20 % calcium chloride (CaCl<sub>2</sub>), 1.59 % methyl cellulose (C<sub>20</sub>H<sub>38</sub>O<sub>11</sub>), and 0.2 % sodium chloride (NaCl)-0.4 % fatty alcohol polyoxyethylene ether (JFC). The microstructure of the dust suppressant was analyzed with scanning electron microscopy (SEM–EDS). At this ratio, the pH of the dust suppressant was 6.94, the viscosity was 69.96 mPa·s, and the surface tension was 26.9 mN/m. After 14 h at 35 °C, the moisture content of the solution reached 71.97 %. It continued to undergo hydration at a negative temperature (−27 °C), effectively reducing the liquid–phase freezing point. The new high-moisturizing composite dust suppressant had an evaporation resistance approximately twice that of water under high-temperature conditions (30–50 °C). After blowing with wind speeds of 7–13 m/s for 60 min, the dust mass increase rate was 4.1 %, which indicated strong resistance to evaporation and wind erosion. Dust suppressants adsorb dust particles and cause agglomeration of dust particles, enhancing their adhesion and forming cross-linked structures. Dust suppressants have broad application prospects and significant environmental and economic benefits.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120848"},"PeriodicalIF":4.5,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600864","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

Granular size segregation in sintering packed beds: Insights into balancing permeability and high-temperature performance

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-03-09 DOI: 10.1016/j.powtec.2025.120891

Ruijing Feng , Cong Leng , Peng Hu , Rui Wang , Chao Fang , Jiating Rao , Jian Xu

{"title":"Granular size segregation in sintering packed beds: Insights into balancing permeability and high-temperature performance","authors":"Ruijing Feng , Cong Leng , Peng Hu , Rui Wang , Chao Fang , Jiating Rao , Jian Xu","doi":"10.1016/j.powtec.2025.120891","DOIUrl":"10.1016/j.powtec.2025.120891","url":null,"abstract":"<div><div>Sintering is an energy-intensive and high-emission process critical to ironmaking, contributing approximately 289.1 million tons of CO<sub>2</sub> emissions annually. Improving the permeability of the sintering packed bed can enhance sintering efficiency and reduce energy consumption. Among various technical measures, optimizing the operational parameters of granules chargers has proven to be an effective and straightforward approach. However, previous studies have not addressed a key issue: how to balance permeability with the overall sintering process performance. To address this gap, this study develops an eleven-roller charging model and employs the Discrete Element Method (DEM) to simulate and analyze granular segregation in the entire sintering process. The effects of operational parameters, such as roller speeds and angles, on segregation are systematically investigated. Cold-state permeability experiments are conducted to evaluate the permeability of granular packed beds, while high-temperature sintering cup experiments determine the optimal segregation level for superior sintering performance. Computational fluid dynamics (CFD) simulations further reveal that changes in bed porosity play a crucial role in sintering performance. The results indicate that reducing roller speed increases particle velocity differences, enhancing segregation and improving packed bed permeability. Adjusting the roller angle also significantly affects permeability. High-temperature sintering cup experiments show that, under present conditions, a segregation ratio of 5 % optimally balances permeability and sintering efficiency, and the vertical sintering rate increases from 16.5 mm/min to 19.2 mm/min, and productivity improves from 1.30 t/m<sup>2</sup>·h to 1.60 t/m<sup>2</sup>·h, significantly enhancing overall sintering performance.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"457 ","pages":"Article 120891"},"PeriodicalIF":4.5,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620203","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