LKAB produces Apatite from mine waste in new pilot plant | LKAB Minerals
Apatite plant EN

LKAB is developing technology to recycle mine waste to produce phosphorus mineral fertilisers, rare earth elements (REEs), fluorine and gypsum, in a project called ReeMAP. The first step is to use the mine waste to produce an apatite concentrate, something LKAB is now doing in their pilot plant.

Leif Boström, Senior Vice President for Business Area Special Products and CEO of LKAB Minerals, which is managing the development within LKAB, explains “We are now up and running with the first step, to produce apatite concentrate, although in a pilot scale. We need to test, verify and plan this production thoroughly to obtain the right yield and cost of production. Additionally, we are planning for a production that is energy efficient and carbon dioxide-free.”

Mobile pilot plant

The pilot plant is built on container platforms to allow it to be moved within and between LKAB’s production plants in Malmberget and Kiruna, in Northern Sweden. Tests with tailings sand (waste material which is a by-product of mining) from the two mines and the respective processing plants will be carried out in campaigns. Right now, a production campaign is underway in Malmberget. The process has multiple steps, flotation is the key principle applied to separate the apatite from the non-valuable tailings. This process is repeated in several steps to obtain a high purity product with the right specification for further processing.

Innovative chemical processing

The further processing will be done using innovative chemical processing, that LKAB is working intensively to develop. Here, the apatite will be processed into phosphorus mineral fertilisers, rare earth elements, fluorine and gypsum. Phosphorus and REEs are listed by the EU as Critical Raw Materials due to their high economic importance and our import dependence. But right now, Leif Boström is pleased to be able to inform of the successes with the apatite production that is the needed first step.

Critical raw materials

”We estimate that a full-scale production from Malmberget and Kiruna will produce around 400,000 tonnes of apatite concentrate annually, in two plants that will be of similar size to our existing iron ore concentrating plants. When we can be up and running depends on the technical developments and the pre-engineering, but also relies heavily on external factors such as environmental permits. Our objective is to recycle our mine tailings to critical raw materials, and the sooner the better” Leif Boström concludes.

Press images:

Top image: Graphic, process description, Graphic: Anders Humlebo/TT Nyhetsbyrån

LKAB produces apatite in pilot plant
Krister Taavoniku, Senior Research Engineer at LKAB, inspecting part of the apatite pilot plant
Apatite concentrate in hand
Dried apatite concentrate that has been recycled and produced from LKAB’s tailings sand
Erik Niva and Rickard Jolsterå, Senior Research Engineers at LKAB, in the pilot plant next to the classifier and magnetic separator.
Erik Niva and Rickard Jolsterå, Senior Research Engineers at LKAB, in the pilot plant next to the classifier and magnetic separator.
Krister Taavoniku, Senior Research Engineer at LKAB, oversees the flotation of the apatite flotation.
Krister Taavoniku, Senior Research Engineer at LKAB, oversees the flotation of the apatite flotation.
LKAB tailings pond apatite
LKAB tailings pond apatite

Photos, aerial and from the pilot plant, Photo: Fredric Alm

Graphic and photos are free to use in editorial material about the ReeMAP project, but make sure to include graphic/photo credit.

ReeMAP – Turning today’s waste into tomorrow’s resources

The project name is constructed from two of the main products we aim to recycle from our tailings sand, REE’s (Rare earth elements) and MAP (a phosphorus mineral fertiliser product) that are considered critical raw materials.