METHOD OF REPROCESSING OF THE COBALT-BEARING IRON-MANGANESE OCIANIC FORMATIONS (VERSIONS) Russian patent published in 2007 - IPC B03B7/00 

FIELD: mining industry; methods of the minerals concentration.

SUBSTANCE: the invention is pertaining to the field of the minerals concentration and may be used at reprocessing of the cobalt-bearing iron-manganese oceanic formations (crusts and concretions) extracted from the bottom of the world ocean and containing besides manganese, cobalt and iron also the nickel, copper, noble and rare metals. The method of reprocessing of the cobalt-bearing iron-manganese oceanic formations includes crushing, grinding, grading and the subsequent separation of manganese and the nonferrous metals. The first version of the method provides, that after the grading from the fraction of 0.5÷0.074 mm exercise extraction of the manganese and the nonferrous metals by the gravity concentration on the table concentrator with the subsequent three-stage magnetic separation of the light fraction of the table concentrator. At that the intensity of the magnetic field of the separator on the first stage compounds from 3500 up to 4000 oersted, on the second stage - from 6500 up to 7200 oersted and on the third stage - from 8000 up to 8200 oersted. At that the manganese and the nonferrous metals are extracted into the magnetic fraction of the third stage. The second version of the method provides, that the grading is exercised for the fraction of 12÷0.5 and 0.5÷0.074 mm, and separation of the manganese and the nonferrous metals is exercised from the received fractions by the gravity concentration on the settling machines from the fraction of 12÷0.5 mm and on the table concentrators from the fraction of 0.5÷0.074 mm. At that the manganese and the nonferrous metals are extracted into the light fractions of the gravity concentration, which are routed to the chemical-metallurgical finishing. The cycle of reprocessing for the both versions of the method is exercised in the module on the ocean floor. The technical result of the invention is the increased share of the manganese extracted into the joint concentrate of manganese, cobalt, nickel and copper, the improved world ocean floor environmental ecology, the reduced volume of the material lifted from the ocean floor.

EFFECT: the invention ensures the increased share of the manganese extracted into the joint concentrate of manganese, cobalt, nickel and copper, the improved world ocean floor environmental ecology, the reduced volume of the material lifted from the ocean floor.

2 cl, 2 dwg, 2 tbl