The objective of this thesis is to optimise the fragmentation at Boliden Minerals open pit mine Aitik. Blasting is one of the main operations in mining, and its performance has a major impact on the overall economy of the mine. The fragmentation process affects not only the local productivity and unit costs of the mining department. It also affects the performance of the subsequent comminution ...

This paper presents the innovation possibilities of crushers functional parts and results layers’ renovation analyses surfaces worn by biomass crusher hammers. The hammers made Hardox 400 material were renovated manual arc welding method (welded with a filled wire electrode its own protection). As an additive material, Lincore 60-O tubular from Lincoln Electric was used. quality weld layers ass...

The crushing chamber is the core component of a cone crusher, consisting mantle and concave parts. Reducing impact wear on performance crushers quality crushed products while extending service life has become significant research challenge. compression ratio particle size distribution coefficient pressure investigated here in order to establish model. effect normal tangential components discuss...

This paper describes the use of a multi-objective evolutionary algorithm to solve an engineering design problem determining the geometry and operating settings for a crusher in a comminution circuit for ore processing. The outcome is a tool for consulting engineers that can be used to create and explore candidate designs for various scenarios. The tool has proved capable of deriving designs tha...