FIELD: process engineering.
SUBSTANCE: invention relates to ecology. For disposal of metallurgical wastes including heavy metals, slime is carried and sorted out with separation of uncomposted fractions and biochemical enrichment of residual fraction to get biomineral fertiliser. Slime solid fractions are minced by dispersion in fluid to get the pulp to be subjected to ultrasound processing for at least 3 hours at 20-30°C and, additionally, biochemically processed organic mass is added thereto. For compost fermentation, air heated to 35°C to 45°C is fed. Formed sediment with radio nuclides and heavy metals are separated, dewatered and directed for further processing or burial.
EFFECT: simplified process.
2 cl, 9 tbl, 6 ex
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