Optimization of a screw conveyor's exploitation parameters

Karwat, B.; Rubacha, Piotr; Stańczyk, Emil

doi:10.17531/ein.2021.2.8

Cited by 11 publications

(9 citation statements)

References 20 publications

(24 reference statements)

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“…One of the modern and advanced methods of modelling and deformation processes research of fine-grained bulk materials is the discrete element method (DEM) [ 37 , 38 , 39 , 40 , 41 , 42 ]. The DEM method is significantly different from the FEM method.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method

2022

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By using the Altair® EDEM™ software, which implements the discrete element method, modelling and further study of the processes occurring in the roller press’s deformation area were carried out. It was shown that the discrete element method makes it possible to accurately describe the phenomena occurring in the area of roller press deformation compared with the finite element method. Models of material compaction in a roller press are developed using calcium hydroxide (slaked lime) and copper ore concentrate. The developed model makes it possible to determine the process’s energy parameters and the material’s compaction characteristics, taking into account the characteristics of its constituent particles. It was shown that discrete element modelling could be used effectively to create roller presses that provide rational characteristics of the briquetting process, taking into account the properties of the material being briquetted and the operating modes of the equipment. The results of the studies provided the basis for the applicability of the development of the discrete element method for describing the phenomena occurring in roller presses and accelerating the design of press equipment and briquetting technological processes.

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Section: Introductionmentioning

confidence: 99%

Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method

2022

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“…Zhao et al [27] studied the influence of internal diameter, pitch, and rotational speed on the conveying capacity. Karwat et al [8] studied the impact of the screw rotation speed on the mass efficiency and power consumption under the different constructions of screw conveyor. Yuan et al [26] proposed the vertical screw conveyor with variable screw section to improve the conveying efficiency.…”

Section: Introductionmentioning

confidence: 99%

The vertical screw conveying characteristics of cohesive particle and optimization of design parameters

Chen¹,

Zhang²,

Li³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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The purpose of this paper is to solve the problem of low conveying efficiency and serious blade wear during vertical screw conveying of cohesive particles. Firstly, the reliability of DEM simulation was verified by comparing the simulated and theoretical values and the influence regularity of different design parameters (rotational speed, pitch, and clearance) on screw conveying characteristics were analyzed based on DEM. In addition, the effect of design parameters on the screw conveying characteristics is identified by ANOVA. Then, the multiobjective optimization model with the both of maximizing the average mass flow rate and minimizing the maximum wear depth of the blade was established using the polynomial fitting regression, which was solved by the non-dominated sorting genetic algorithm (NSGA-II). Finally, the comprehensive evaluation was used to determine the best design parameters. The above research results provide a certain reference for the study of cohesive particle’s vertical screw conveying characteristics and equipment optimization design.

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“…A common feature of these studies [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] is that they are experimental and include statistical processing of the obtained results. At the same time, no universal mathematical model of the process of material compaction in a roll press equipped with a screw feeder has been proposed.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to the Screw Feeder Design to Improve the Reliability of Briquetting Process in the Roller Press

Baiul¹,

Ващенко²,

Khudyakov³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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The screw feeder design for the pre-compaction of bulk materials to be briquetted in a roll press is considered to increase the overall reliability. The relationship between the parameters of the screw feeder and its technological characteristics is investigated by the example of two fine-grained materials. A new mathematical model and design algorithm have been developed, which takes into account the properties of materials, the roller press parameters, the shape of the briquettes, and their deformation after compaction. The relationship between the pre-compaction pressure and the material stack height at the inlet is determined. The relations between the torque, the screw pitch, and the material stack height above the inlet, as well as the drive power and the screw pitch on productivity, are investigated. In experiments, using the proposed design, the compaction ratio of the peat increases by 22-27%, and hydrolyzed lignin – by 14-17%. The proposed approach allows for preventing drive overloading and ensures the reliable operation of pre-compaction devices for the roller presses.

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Optimization of a screw conveyor's exploitation parameters

Cited by 11 publications

References 20 publications

Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method

Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method

The vertical screw conveying characteristics of cohesive particle and optimization of design parameters

A Novel Approach to the Screw Feeder Design to Improve the Reliability of Briquetting Process in the Roller Press

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