Stefan Reisinger, Kari Niiranen
LKAB intends to reopen Gruvberget mine in Svappavaara. As the deposit contains a significant amount of hematite and hematite-magnetite mixed ore, the processability of the ore by a sequence of Low Intensity Magnetic Separation and High Gradient Magnetic Separation was systematically tested. The raw materials analysis comprised a comparative study of 5 differing samples originating from drill cores representing the variation in Fe content and the ratio between magnetite and hematite in the deposit. Energy controlled grinding test work following a LKAB protocol was conducted to assess the effectiveness of separating the mixed ores. The results illustrated varying degrees of efficiency in the magnetic separation processes, highlighting significant differences in the performance based on the specific characteristics of the ore samples. This study not only provides insights into potential methodologies for ore processing at the Gruvberget site but also contributes valuable data for future operational planning and resource management. The findings will assist in deciding on the feasibility of reopening the mine while addressing environmental and technical considerations involved in the extraction of these iron-rich resources.
@article{619a716e-805e-4f97-8232-d2b43ef58a2d,
title={Testing of magnetic processability of mixed hematite-magnetite ores from Gruvberget, Northern Sweden},
author={Stefan Reisinger and Kari Niiranen},
year={2023},
language={de}
}TY - JOUR TI - Testing of magnetic processability of mixed hematite-magnetite ores from Gruvberget, Northern Sweden AU - Stefan Reisinger AU - Kari Niiranen PY - 2023 LA - de ER -
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