Medium Density Control for Coal Washing Dense Medium Cyclone Circuits

Zhang, Lijun; Xia, Xiaohua; Zhang, Jiangfeng

doi:10.1109/tcst.2014.2349793

Cited by 14 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the centrifugal force, the mineral with low density rises to form overflow slurry. Meanwhile, the mineral with high density sinks to form underflow slurry [2]. Therefore, the density of dense medium suspension directly affects not only the efficiency of separation process but also the economic benefits of coal separation plant.…”

Section: Introductionmentioning

confidence: 99%

Multi‐rate event‐triggered control with imperfect data for dense medium separation

Dai,

Yang,

Zhang

et al. 2023

IET Control Theory & Appl

View full text Add to dashboard Cite

The stability control of suspension density is an important means to ensure the quality of fine coal in dense medium separation (DMS) process. This paper focuses on the tracking control issue of the dense medium suspension density in a non‐uniform sampling and networked control environment, and proposes a multi‐rate event trigger control design method. Firstly, lifting technique and multi‐rate identification method are adopted to establish the multi‐rate model. Secondly, a multi‐rate event‐triggered predictive control (MEPC) algorithm is proposed to reduce the waste of communication resources and ensure tracking performance. Furthermore, by using a Kalman filter to eliminate the effects of noise and developing a compensation mechanism to predict the lost data, a robust MEPC (RMEPC) algorithm is further proposed for imperfect data in the actual production process. Finally, the hardware‐in‐the‐loop simulation experiments with actual parameters of coal preparation plant have been carried out, showing the effectiveness of the proposed method.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi‐rate event‐triggered control with imperfect data for dense medium separation

Dai,

Yang,

Zhang

et al. 2023

IET Control Theory & Appl

View full text Add to dashboard Cite

show abstract

Life cycle assessment of opencast coal mine production: a case study in Yimin mining area in China

Zhang

Wang

Feng

2018

Environ Sci Pollut Res

View full text Add to dashboard Cite

China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and solid waste occupation. The previous studies on the environmental impacts of opencast coal mine production were focused on a single production process. Moreover, mined land reclamation was an important process in opencast coal mine production; however, it was rarely considered in previous research. Therefore, this study attempted to perform a whole environmental impact analysis including land reclamation stage using life cycle assessment (LCA) method. The Yimin opencast coal mine was selected to conduct a case study. The production of 100 tons of coal was used as the functional unit to evaluate the environmental risks in the stages of stripping, mining, transportation, processing, and reclamation. A total of six environmental impact categories, i.e., resource consumption, acidification, global warming, solid waste, eutrophication, and dust, were selected to conduct this assessment. The contribution rates of different categories of environmental impacts were significantly different, and different stages exhibited different consumption and emissions that gave rise to different environmental effects. Dust was the most serious environmental impact category, and its contribution rate was 36.81%, followed by global warming and acidification with contribution rates of 29.43% and 22.58%, respectively. Both dust and global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis of environmental impact. Some economic and feasible measures should be used to mitigate the environmental impacts of opencast coal mine production, such as water spraying, clean transportation, increasing processing efficiency, and improving mining technologies. This study can be considered as a useful reference for a deeper understanding of key environmental impacts related to the whole coal production in opencast coal mine.

show abstract

Experimental study of the separation performance of a novel sewage hydrocyclone used in sewage source heat pump

Tian

Shen

et al. 2016

Applied Thermal Engineering

View full text Add to dashboard Cite

Medium Density Control for Coal Washing Dense Medium Cyclone Circuits

Cited by 14 publications

References 18 publications

Multi‐rate event‐triggered control with imperfect data for dense medium separation

Multi‐rate event‐triggered control with imperfect data for dense medium separation

Life cycle assessment of opencast coal mine production: a case study in Yimin mining area in China

Experimental study of the separation performance of a novel sewage hydrocyclone used in sewage source heat pump

Contact Info

Product

Resources

About