FIELD: concentration of wastes of mining industry; may be used in production of ferrous metals, fertilizers and building materials. SUBSTANCE: wastes are preliminarily classified into sands and slimes, and separately concentrated on sand and slime concentrators. Black ore concentrate and middlings obtained in sand concentration are separately ground, cleaned on slime tables to produce ore concentrate. Combined ore concentrate is concentrated on slime tables and then middlings are subjected to wet magnetic separation at different intensities of magnetic field. EFFECT: higher efficiency. 1 dwg
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Authors
Dates
1997-12-20—Published
1993-09-03—Filed