Speaker:  Dr Marcos de Paiva Bueno, CEO, Geopyörä

Abstract:  Comminution tests are an essential element in the design and operation of mineral processing plants. Several methods have been developed to assess the breakage characteristics of rocks to generate parameters for modelling. However, most of the existing methods are laborious, expensive and require large samples. Consequently, test work has been traditionally conducted with a few representative reference samples. On the other hand, geometallurgical modelling programs require an extensive amount of test work to allow understanding of the variability of ore properties within the deposit, and establish spatial geometallurgical domains that show the differential responses to mineral processing. Therefore, comminution tests for geometallurgy need to be more effective in terms of time, cost and sample size. This webinar will discuss the Geopyörä rock breakage test which is capable of directly measuring forces and energy applied to rock particles during the breakage process. The new testing method uses smaller samples and can be significantly faster than similar tests available on the market. The webinar will present the concept, design and operation of the test as well as test work results, which have been benchmarked against the industry standard comminution tests.

Bio:  Dr Marcos Bueno is the founder and CEO of Geopyörä, a startup developing rock breakage testing solutions for the mining industry. After earning his Bachelor's degree from the University of Sao Paulo, he pursued a PhD at the JKMRC at The University of Queensland. After his studies, he spent most of his career at Ausenco as a senior engineer, working on technical and engineering studies for various mining commodities. Recently, working as a senior researcher at the University of Oulu, he developed the Geopyörä breakage test with support from Business Finland. Marcos has expertise in comminution circuit design and geometallurgy.

About JKMRC Friday Seminars 2023

Welcome to the 2023 Series of the JKMRC Friday Seminars.  The list of presentations will aim to cover a range of topics related to the minerals sector from decision making in exploration, new mineral processing technologies, social licence to operate and mine closure.

The JKMRC Friday Seminars will be presented often in person, at the Indooroopilly Mine Site Lecture Theatre, and also as webinar.  Registration for the webinar is required and can be made via the registration link in each seminar overview.

A large number of past webinars can be accessed on the SMI website: https://smi.uq.edu.au/webinars

Previous seminars have been uploaded to YouTube via the following link: https://www.youtube.com/user/smiuq

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