Video: Circular Case 5

We would like to present the first of the two Circular Cases that have been developed in Sweden, in this case the CC5.

A new technology for covering mining waste has now been tested in demonstration scale at Boliden’s mine in Garpenberg, Sweden.This new technology involves a mixture of green liquor sludge, a residual material from the pulp industry, which can be an alternative to bentonite when improving the density of moraine.

The main objective when covering mining waste is to minimize the total oxygen penetration through the sealing layer to the underlying mining waste and thereby limit weathering and leaching of, for example, heavy metals.

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The project has received funding from the European Union’s Horizon 2020 research and innovation Programme under grant agreement Nr. 730305.