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Research Article

An overview of the Nordic mine ventilation system

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ABSTRACT

This paper describes the ventilation system used in underground hard rock mines in Sweden and Finland, which differs in many respects from the system commonly used in other major mining countries such as Australia, Canada, South Africa, and the USA. The Nordic system utilizes auxiliary fans with a variable speed drive to distribute primary airflow to working levels instead of regulators, which are commonly used in other countries. In addition to comparing the Nordic system with the system used in other countries, this paper describes the system’s ventilation-on-demand and air conditioning, as well as ventilation regulations in Sweden and Finland. A discussion regarding the potential to use natural-assisted refrigeration in the future is also described in this paper.

RÉSUMÉ

Ce document décrit le système de ventilation utilisé dans les mines souterraines de roche dure en Suède et en Finlande, qui diffère à bien des égards du système couramment utilisé dans d’autres grands pays miniers tels que l’Australie, le Canada, l’Afrique du Sud et les États-Unis. Le système nordique utilise des ventilateurs auxiliaires à vitesse variable pour distribuer l’air primaire aux niveaux de fonctionnement plutôt que des régulateurs, qui sont couramment utilisés dans d’autres pays. En plus de comparer le système nordique avec le système utilisé dans d’autres pays, ce document décrit la ventilation à la demande et la climatisation du système, ainsi que les réglementations en matière de ventilation en Suède et en Finlande. Une discussion sur la possibilité d’utiliser la réfrigération assistée naturelle à l’avenir est également décrite dans le présent document.

Additional information

Notes on contributors

A. Halim

A. Halim is a senior lecturer at Luleå University of Technology, Sweden, with approximately 20 years of experience as a site mining engineer, and researcher and lecturer in mining engineering in Indonesia, Australia, Sweden, and Finland. [email protected]

T. Bolsöy

T. Bolsöy is the CEO of EOL Vent Mining AB, Sweden, with approximately 18 years of experience as a ventilation practitioner. Before joining EOL Vent Mining AB, he worked as ventilation engineer at the LKAB Kiruna iron ore mine.

S. Klemo

S. Klemo is the ventilation engineer at the LKAB Kiruna iron ore mine, Sweden. She has worked at LKAB since 2005 in various departments such as mineral processing, maintenance, and ventilation.

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