A novel and effective method for coal slime reduction of thermal coal processing

Zhang, Bo; Zhu, Guangqing; Lv, Bo; Gao, Yan

doi:10.1016/j.jclepro.2018.06.306

Cited by 29 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the rotation of the crankshaft provides a simple harmonic vibration with the inner and outer screen frames, which results in periodical slack and stretch motions of the elastic screen panel. Then, under the projectile behavior of the elastic screen surface, particles can achieve a high ejection acceleration of 30-50 g [28]. Even plugging particles can easily pass through the screen surface, ensuring high screening capability and efficiency [29].…”

Section: Mathematical Modelmentioning

confidence: 99%

Research on dynamic and vibration behaviors of a flip-flow screen with crankshaft-link structure

Li¹,

Liu²,

Zhou³

et al. 2022

J. vibroeng.

View full text Add to dashboard Cite

A flip-flow screen with crankshaft-link structure (FFSCLS) is an effective solution for screening of high-water and fine materials due to its good performance. The dynamical characteristics largely affects the screen performance and the processing capacity of the FFSCLS. In this paper, a dynamic model governing the dynamical characteristics of the FFSCLS was proposed. In addition, the motion trajectory and vibration data of the FFSCLS were investigated by vibration experimental technology. The results show that the experiment results can be fully described by the dynamic model whit the maximum deviation was within 6.26 %. Moreover, the mass ratio between outer box and inner box determined the dynamical characteristics of the flip-flow screen, and these parameters should be optimized. This work can provide useful references for efficient operation and optimal design for the flip-flow screen.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

Research on dynamic and vibration behaviors of a flip-flow screen with crankshaft-link structure

Li¹,

Liu²,

Zhou³

et al. 2022

J. vibroeng.

View full text Add to dashboard Cite

show abstract

“…Under the slackening and tensioning of the screen surface, the particles on the screen surface can achieve a high ejection acceleration of 30-50g. Under these high-intensity vibration conditions, particles are less likely to clog the screen holes, ensuring screening efficiency and capacity [24,25]. The rubber spring used in FFSCLS is shown in Fig.…”

Section: Mathematical Modelmentioning

confidence: 99%

Dynamical characteristics of flip-flow screen with crankshaft-link structure and mechanical analysis

Li¹,

Zhou²,

Liu³

et al. 2022

J. vibroeng.

View full text Add to dashboard Cite

Flip-flow screen with crankshaft-link structure (FFSCLS) is effective for screening of high-water and fine materials. In this paper, a dynamic model governing the vibration and mechanical characteristics of the FFSCLS is proposed. In addition, the motion trajectory and vibration data of the FFSCLS were investigated by MATLAB/Simulink method. The results show that the MATLAB/Simulink method can fully describe the vibration characteristics of the FFSCLS with the maximum deviation within 6.71 % between experiment results. The mechanical characteristics of the FFSCLS were systematically studied by automatic dynamic simulation analysis using the ADMAS software. The MBD simulation results indicated that the resultant forces of the inner and outer screen boxes are always equal to 0. Moreover, the rotational speed of the crankshaft, the stiffness coefficient of the guild springs and rubber springs determined the mechanical characteristics of the flip-flow screen, and these parameters should be optimized. This work is helpful for the understanding of the combined effects of parameters and provides essential references for optimal design and efficient operation of a flip-flow screen with crank-link structure.

show abstract

“…achieve high projection strengths, promoting the loosening and layering of cohesive and wet fine-grained materials, and increasing the penetrating probability of fine-grained materials [12], [13]. Also, the screen panel is cyclically deformed with a large deflection, causing the screen apertures to undergo tensile deformation, which effectively prevents adhesive materials with a large specific surface area and nearaperture particles from blocking the apertures and improves the screening efficiency and throughput [14], [15]. Therefore, VFFS is a common unit operation for dry screening of highviscosity, high-water, and fine minerals [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Model of Vibrating Flip-Flow Screens That Considers the Effects of Screen Panels

Lin

et al. 2022

IEEE Access

View full text Add to dashboard Cite

Vibrating flip-flow screens have been widely used in the mineral processing industry. As the key components, flip-flow screen panels strongly affect the dynamics of vibrating flip-flow screens. However, there is no systematic research into this problem. In this study, the dynamic characteristics of flip-flow screen panel are identified by the finite element analysis. Furthermore, a nonlinear coupling dynamic model of vibrating flip-flow screens that considers the effects of flip-flow screen panels is proposed, and the analytical and numerical solutions of its governing equation are deduced via the equivalent linearization method and the time marching method. Also, experimental results show that the proposed model describes the movements of vibrating flip-flow screens more accurately than the classical mechanical model which does not consider flip-flow screen panels. Finally, the effects of the screen panel's parameters, such as the slack length and the stiffness, on the dynamics of vibrating flip-flow screens are investigated.

show abstract

A novel and effective method for coal slime reduction of thermal coal processing

Cited by 29 publications

References 3 publications

Research on dynamic and vibration behaviors of a flip-flow screen with crankshaft-link structure

Research on dynamic and vibration behaviors of a flip-flow screen with crankshaft-link structure

Dynamical characteristics of flip-flow screen with crankshaft-link structure and mechanical analysis

Nonlinear Model of Vibrating Flip-Flow Screens That Considers the Effects of Screen Panels

Contact Info

Product

Resources

About