FIELD: metallurgy.
SUBSTANCE: dusty wastes of copper-based charge are activated in high-energy mill with the aid of mill balls covered by ferromanganese in quantity of 10 wt %. The ratio of balls covered by ferromanganese mass and dusty wastes mass is S = 10:1, activation time τa=1.75 h. Powder charge is prepared from the mixture of base powders containing 9 wt % of tin, 2.5 wt % of graphite and copper - the rest, and activated additive 4-64 wt % then cold pressing and roasting is carried out with possible further postcompaction.
EFFECT: increase of rupture resistance against radial compression, utilisation of dusty wastes.
1 tbl, 1 ex
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