Master Thesis: Analysis of cone crusher performance with changes in feeding process

Sandvik Rock Processing Solutions, a business area within the Sandvik Group, offers a thesis project in the area of stone crushing.

Background and purpose

Sandvik is a leading supplier of equipment and tools, service and technical solutions for the mining and infrastructure industries. The site in Svedala, Sweden, is Sandvik's global competence center for stone crushing and screening equipment. The site has about 600 employees and covers the whole business, from management, R&D and production to marketing, sales and aftermarket services.

Sandvik CH cone crusher can be calibrated to achieve specific results, maximize productivity and minimize wear, but any calculation will be undermined without a solid understanding of the feeding condition. Any kind of irregularity in the feed – whether from segregated feed, a misaligned feeder, or blockages or packing in the chamber – can cause performance to drop by up to 30%.

Uneven distribution of material in the chamber means that the Hydroset – the mechanism that exerts an upward force on the mantle – cannot maintain even pressure. Depending on the type of irregularity, poor feeding conditions can either cause fluctuations in pressure over time, or in different parts of the chamber. Any fluctuation in pressure means that the optimal force will not be delivered consistently so, of course, crusher performance declines.

Hence, it is of interest to increase our knowledge how poor and good feed arrangements affect the crusher performance in terms of segregation, misalignment, trickle feeding using Distinct Element Method – DEM.

Work description

The main objective of the thesis is to, with help of DEM, study how the material flow down to the crusher and how its segregates and distributes with a set of parameter changes in a common Sandvik feeding process setup. A common process includes a crusher, feeding arrangement and a conveyor belt.

The agreed application parameters should vary in a structured and effective way through for example, some sort of parametric study.

The results will form the basis for Sandvik when developing new and optimal feeding solutions to our customer.

Limitations

Because of limitations in time, the results can not be verified doing real tests.

Goal

Simulation work routine in Rocky DEM particle simulation software.

Duration of project

The thesis project lasts 20 weeks, starting in the spring 2023. The location for this position is Svedala, Sweden.

Student background

We are primarily looking for someone studying engineering physics or mechanical engineering.

At Sandvik, we believe that diversity of experience, perspective, and background leads to a better environment for our employees, our business, and our customers. Now, we are looking forward to meeting you!

Application and contact person

For more information about the thesis or to apply, please contact:

Abdullah Chibli, phone: +46 706 16 11 62
Email: abdullah.chibli@sandvik.com

The selection is done continuously. Please send your application as soon as possible, February 28, 2023 at the latest.