Technology opportunities to develop large-volume platinum ore deposits in dunite of zoned mafic–ultramafic complexes

• Technological properties of platiniferous mineralization in dunites were defined.
• The possibility of effective Pt recovery from dunites was based theoretically and practically.
• The flowsheet with possibility of 94% platinum recovery was developed and tested.

The results of mineralogical and technological studies of PGM mineralization in zoned mafic – ultramafic complexes of the Ural–Alaskan type are given. Technological properties, grain size, and good opening of PGM ore in grain size class + 80 μm make it possible to concentrate ore using gravity methods with stadial comminution and between cycle separation of relatively large grains and nuggets into high-grade concentrates at the early stage of disintegration. The elaborated technological flow chart approved under semi-industrial conditions allows recovery of as much as 94% Pt.

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