Flotation separation of coal dust from foundry dust enhanced by pre-soaking assisted mechanical stirring

Gong, Xiaolong; Hu, Shengli; Liu, Xinwang; Yang, Ming–Hsuan; Jiang, Wenming; Zou, Fan

doi:10.1016/j.jenvman.2023.117899

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…But, there are numerous major issues with foundry production today, including hostile environments, overcapacity, manual labor demands, high labor intensity, and frequent personnel turnover. The intelligence level of foundry firms in China is now varied [2]–[4]. These problems seriously constrain the improvement of casting intelligence level.…”

Section: Introductionmentioning

confidence: 99%

Design, simulation, control of a hybrid pouring robot: enhancing automation level in the foundry industry

Chengjun,

Hao,

Long

2024

Robotica

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Currently, workers in sand casting face harsh environments and the operation safety is poor. Existing pouring robots have insufficient stability and load-bearing capacity and cannot perform intelligent pouring according to the demand of pouring process. In this paper, a hybrid pouring robot is proposed to solve these limitations, and a vision-based hardware-in-the-loop (HIL) control technology is designed to achieve the real-time control problems of simulated pouring and pouring process. Firstly, based on the pouring mechanism and the motion demand of ladle, a hybrid pouring robot with a 2UPR-2RPU parallel mechanism as the main body is designed. And the equivalent hybrid kinematic model was established by using Eulerian method and differential motion. Subsequently, a motion control strategy based on HIL simulation technique was designed and presented. The working space of the robot was obtained through simulation experiments to meet the usage requirements. And the stability of the robot was tested through the key motion parameters of the robot joints. Based on the analysis of pouring quality and trajectory, optimal dynamic parameters for the experimental prototype are obtained through water simulation experiments, the pouring liquid height area is 35–40 cm, the average flow rate of pouring liquid is 112 cm3/s, and the ladle tilting speed is 0.0182 rad/s. Experimental results validate the reasonableness of the designed pouring robot structure. Its control system realizes the coordinated movement of each branch chain to complete the pouring tasks with different variable parameters. Consequently, the designed pouring robot will significantly enhance the automation level of the casting industry.

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Section: Introductionmentioning

confidence: 99%

Design, simulation, control of a hybrid pouring robot: enhancing automation level in the foundry industry

Chengjun,

Hao,

Long

2024

Robotica

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Influence of particle size on the separation performance and flotation kinetics of foundry dust

Gong,

Xiao,

Zhao

et al. 2024

Process Safety and Environmental Protection

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Ultrasonic Enhancement for Mineral Flotation: Technology, Device, and Engineering Applications

Zhang,

Cheng,

et al. 2024

Minerals

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In the past five years, the number of articles related to ultrasonic mineral flotation has increased by about 50 per year, and the overall trend is on the rise. The most recent developments in ultrasonics for flotation process intensification are reviewed herein, including effects of ultrasound treatment on an aqueous slurry, improvement in flotation methods and technological processes, device development tracking, and application effects in mineral process engineering. At this point in time, there are pilot-scale flotation tests to evaluate the feasibility of ultrasonic pretreatment technology for industrial use to enhance residue flotation separation, and the results showed that the recovery rate of concentrate is increased by about 10%. Four aspects of ultrasonic flotation process improvement are summarized, namely, changing the ultrasonic parameters, the synergistic effect of ultrasound and reagents, the ultrasonic effect of particles with different-sized fractions, and application to new systems. In addition, the effect of ultrasonic flotation mechanisms is explored through a quadratic model and numerical simulation. The combination of ultrasonic flotation with other fields, such as magnetic fields, to enhance the separation efficiency and recovery of minerals is also a future trend. It is also proposed that ultrasonic flotation technology will be used with big data, industrial Internet of Things, and automatic control technology to achieve deep bundling, optimizing the flotation process by implementing remote monitoring and control of the flotation process.

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Flotation separation of coal dust from foundry dust enhanced by pre-soaking assisted mechanical stirring

Cited by 3 publications

References 35 publications

Design, simulation, control of a hybrid pouring robot: enhancing automation level in the foundry industry

Design, simulation, control of a hybrid pouring robot: enhancing automation level in the foundry industry

Influence of particle size on the separation performance and flotation kinetics of foundry dust

Ultrasonic Enhancement for Mineral Flotation: Technology, Device, and Engineering Applications

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