On 29 May, the third stage of flue gas scrubbing began in Malmberget. The supplier, Outotec, will be transferring the facility at the MK3 pelletizing plant to LKAB in the next few days.
This will mean that environmental investments in Malmberget worth one billion Swedish kronor will have been realised over the last year. A similar facility came into operation at the conveyor belt furnace a year ago.
The first scrubbing stage at MK3 has been in place for some time. The third stage supplements this and also scrubs flue gases from the cooler parts of the pellet oven at MK3.
“It is great to know that we have been able to complete all of our environmental investments. We now have scrubbing systems at both pelletizing plants, which comply with more stringent environmental conditions for future full production,” says Anders Henriksson, head of the processing plant in Malmberget.
On Wednesday, the new scrubbing facility at MK3 received a visit from Outotec’s CEO, Pertti Korhonen and Outotec’s Marketing Manager for Scandinavia, Jan Nilsson.
“We are very pleased with the technical standard at the facility. However, we faced a very demanding schedule in order to fine-tune things and deal with outstanding issues in good time before the new requirements come into force,” says Per Lundström, Project Manager, Malmberget.
Flue gas scrubbing primarily deals with sulphur dioxide and is over 90 per cent effective. There are also electrostatic precipitators for particulate cleaning at both pelletizing plants in Malmberget.
“We now have scrubbing facilities that provide the latest environmental performance in both Malmberget and Kiruna. The first stage of equivalent facilities in Svappavaara has been constructed and the second stage is due for completion this year. LKAB’s profile as the sustainable mining company is further enhanced by these large-scale environmental investments,” says Markus Petäjäniemi, Senior Vice President, Production & Logistics at LKAB.
“For us in production it is important that the new scrubbing facilities do not have any negative impact on production capacity and product quality. So far, our experiences of the earlier scrubbing stages have been good. Processes and scrubbing facilities both work well. On the other hand, this has increased LKAB’s scrubbing costs and also requires more energy,” says Torbjörn Ahnqvist.