玉米混合料在清洗装置上的纵向差异迁移机理及分布行为研究

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-07-19 DOI:10.1016/j.powtec.2025.121440

Jialiang Zhang , Fengshuang Liu , Jun Fu

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引用次数: 0

摘要

为了提高玉米清洗装置的清洗性能，选择纵向迁移差系数作为颗粒间相对迁移行为的评价指标。选择杂质率和损失率作为清洗性能的指标。采用计算流体力学和离散元方法，探讨了气流速度、气流角度和筛网振动频率对玉米混合料中颗粒相对迁移性能的影响。然后确定玉米籽粒和杂质颗粒的相对迁移性能与清洗性能之间的相关性。结果表明：在振动频率条件下，颗粒间的相对迁移性能与杂质率和损失率呈强相关，相关系数分别为- 0.91和0.93；在风速条件下，相关系数分别为- 0.93和0.96。这些发现为提高玉米的清洁性能提供了新的方法和技术创新。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Study on the longitudinal differential migration mechanism and distribution behavior of maize multiple mixtures on the cleaning device

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Study on the longitudinal differential migration mechanism and distribution behavior of maize multiple mixtures on the cleaning device

To improve the cleaning performance of maize cleaning devices, the longitudinal migration difference coefficient was selected as the evaluation index for the relative migration behavior between particles. The impurity rate and loss rate were chosen as the indicators for cleaning performance. Computational Fluid Dynamics and Discrete Element Method were used, the effects of airflow velocity, airflow angle, and screen vibration frequency on the relative migration performance of particles in maize mixtures were explored. The correlation between the relative migration performance of maize kernels and impurity particles and the cleaning performance is then determined. The results showed that under vibration frequency conditions, the relative migration performance between particles was strongly correlated with impurity rate and loss rate, with correlation coefficients of −0.91 and 0.93. Under airflow velocity conditions, the corresponding correlation coefficients were − 0.93 and 0.96. These findings provide a new method and technological innovation for improving maize cleaning performance.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.