COMPOSITION OF TECHNOLOGICAL SAMPLE OF FERROMANGANESE CRUSTS FROM SEAMOUNTS AND PRODUCTS OF ITS PROCESSING

Abstract

Elemental and mineral compositions of cakes (residues left after the acid processing of a technological sample of ferromanganese crusts from the Magellan Seamounts) are investigated. It has been established that hydrosulfuric acid processing of the ferromanganese crust results in the extraction of Mn and associated metals, but a significant part of rare earth and other elements is left in cakes. Electron microscopic investigations of samples after their hydrosulfuric acid processing showed the retention and formation of some rare minerals (monazite, xenotime, coffinite, uranium oxide, molybdite, thallium oxide, and magnetite containing T, Cr, Cu, Pt, and Au). Valuable components can be extracted completely from cakes by the method of combined leaching.