Experimental research on lateral pressure of five-compartment cement silo wall with inverted cone-bottom

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-02-22 DOI:10.1016/j.powtec.2025.120820

Haiyan Liu , Ying Li , Zhaoming Wang , Lingyu Wu , Qikeng Xu , Hongbo Qu

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Abstract

In the cement industry, five-compartment silos are employed to achieve the “a silo multi-storage” function, aiming to save costs and land area. However, when designing a five-compartment cement silo, fan-ring section and inverted cone-bottom shape make it difficult to accurately calculate the wall lateral pressure because height-to-diameter ratio and calculated storage height ill-defined. This paper designs two models of five-compartment silo with flat-bottom and inverted cone-bottom with 1000 mm outer diameter and 2000 mm high, completes experiments on static and dynamic lateral pressures for four tests. Calculated storage height is the clear height from the upper surface of the stored material to the point where the silo wall meets the inverted cone-bottom; The more elongated compartments cause 73 % of static average lateral pressure to exceed Janssen theoretical values; More than 80 % of maximum dynamic lateral pressure during discharge appear at the moment of initial cement outflow and mass flow stage, dynamic pressure fluctuation at inverted cone-bottom is more obvious; The concept of overpressure contrast coefficient is proposed and modified lateral pressure calculation formulas applicable to slender five - compartment reinforced concrete silos are given.

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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.