Exploring Efficiencies: Examining the Possibility of Decreasing the Size of the Briquettes Used as the Batch in the Electric Arc Furnace Dust Processing Line

Bembenek, Michał

doi:10.3390/su12166393

Cited by 17 publications

(22 citation statements)

References 23 publications

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“…Determination of the relations between the processed material, the machine structural components, and the processes applied is an important issue from the point of view of ecology. Knowledge of the relations can be used for improvement of the process and quality of the end product, reduction in energy consumption, and the amount of waste, as well as its rational disposal according to the rules of sustainable development [ 1 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Study of Selected Physical-Mechanical Properties of Corn Grains Important from the Point of View of Mechanical Processing Systems Designing

Kruszelnicka

2021

Materials

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Mechanical properties of corn grains are of key importance in a design of processing machines whose energy demand depends on these properties. The aim of this study is to determine the selected mechanical properties of corn grains and the rupture energy. The research problem was formulated as questions: (1) How much force and energy is needed to induce a rupture of corn grain maintaining good quality of the product of processing (mixing, grinding transport)? (2) Can empirical distributions of the studied physical-mechanical properties be described by means of probability distributions provided by the literature? (3) Is there a relationship between the corn grain size and the selected mechanical properties, as well as rupture energy? In order to achieve the goals, the selected physical properties (size, volume) of corn grains have been distinguished and a static compression test has been carried out on an Instron 5966 testing machine. The results indicate a significant scatter of the results in terms of size, grain shape, forces, energy, and deformation corresponding to the point of inflection, bioyiled point, and rupture point. It has also been indicated that empirical distributions of the analyzed properties can be described by means of distributions known from the literature, e.g., gamma, Weibull or lognormal distributions. It has been confirmed that mechanical properties such as force, energy, and stress that cause rupture depend on the grain size, more precisely, the grain thickness—there are negative relations between thickness and force, energy and stress in relation to the point of inflection, bioyiled point, and rupture point.

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Section: Introductionmentioning

confidence: 99%

Study of Selected Physical-Mechanical Properties of Corn Grains Important from the Point of View of Mechanical Processing Systems Designing

Kruszelnicka

2021

Materials

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“…A very important element of a properly conducted agglomeration is effective preparation of the material and its dosing [ 67 , 68 ]. The briquette forming process takes place between two rollers, which rotate in mutually opposite directions and on the surfaces of which there are molding cavities distributed in a proper way [ 69 ]. In traditional roller presses, working surfaces of rollers are provided with cavities which are arranged so as to be their mutual mirror images on both rollers [ 64 ].…”

Section: Introductionmentioning

confidence: 99%

“…Our own experiments carried out during the determination of the compaction level, characteristics of fine-grained materials [ 69 , 75 ] performed in a closed die, show that the compacted material heats up when high pressure is exerted on it. This is also confirmed by the experiments done by Litstera et al [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Temperature Distribution on the Surface of Saddle-Shaped Briquettes Consolidated in the Roller Press

Bembenek

Uhryński

2021

Materials

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The unit pressure in the fine-grained material consolidation process in the roller press can reach over hundred MPa and is a parameter which results, among other things, from the properties of the consolidated material and the compaction unit geometry. Its value changes depending on the place on the molding surface. Generating different pressure on the surface of briquettes makes their compaction different. One’s own and other researchers’ experience shows that, in the case of exerting high pressure on the merged fine-grained material, the higher unit pressure exerted on the material, the higher temperature of the consolidated material is. The temperature distribution on the surface of the briquettes can testify the locally exerted pressure on the briquette. The stress distribution in the briquetting material is still a subject of research. The article includes thermography studies of the briquetting process of four material mixtures. Thermal images of briquettes were taken immediately after they left the compaction zone as well as forming rollers. The obtained thermograms and temperature variability at characteristic points of the surface of briquettes were analyzed. The correlation between the temperature distribution and the stress distribution in the briquettes was determined.

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“…As it results from our own research and the publications of other researchers, for this type of materials it is advisable to use an asymmetric compaction unit, in which the shape of opposite forming tool cavities is different [ 28 , 29 , 30 ]. This allows the elimination of the phenomenon of briquette cracking in the plane of the contact of tool cavities of both rollers, in so-called dividing plane [ 31 ]. Such an effect is achieved due to a more favorable distribution of pressures acting on the briquette during formation in the die cavity as compared to the symmetrical layouts [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

The Analysis of the Morphology of the Saddle-Shaped Bronze Chips Briquettes Produced in the Roller Press

et al. 2021

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This paper presents the results of the investigations of the properties of saddle-shaped copper alloy chips briquettes produced in a roller press. The physical and mechanical properties of the investigated briquettes were examined on their external surfaces as well as on their cross-sections. The density, chemical composition, microstructure analysis obtained with a 3D and scanning microscope, surface roughness and hardness of the obtained briquettes were investigated. The research proved the differentiation of the physical and mechanical properties of briquettes depending on the investigated area of their surface. The analysis of changes in the porosity of briquettes on their cross-section showed zones of various densification levels. This research expands the knowledge of the processes taking place during the compaction and consolidation of granular materials in roller presses as well as the knowledge concerning designing the geometry of forming tools.

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Exploring Efficiencies: Examining the Possibility of Decreasing the Size of the Briquettes Used as the Batch in the Electric Arc Furnace Dust Processing Line

Cited by 17 publications

References 23 publications

Study of Selected Physical-Mechanical Properties of Corn Grains Important from the Point of View of Mechanical Processing Systems Designing

Study of Selected Physical-Mechanical Properties of Corn Grains Important from the Point of View of Mechanical Processing Systems Designing

Analysis of the Temperature Distribution on the Surface of Saddle-Shaped Briquettes Consolidated in the Roller Press

The Analysis of the Morphology of the Saddle-Shaped Bronze Chips Briquettes Produced in the Roller Press

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