METHOD FOR OPENING LOPARITE CONCENTRATES Russian patent published in 2014 - IPC C22B59/00 C22B34/00 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy of rare metals. A method for opening loparite concentrates involves preliminary machining of loparite concentrates and further treatment of activated loparite concentrates with 30% of HNO₃ solution at the temperature of 99 °C. To further treatment there subject are activated loparite concentrates with double amount of energy of variation of loparite crystal lattice parameters of at least 73 kJ/mole and with stored total amount of energy, which corresponds to surface of areas of coherent dissipation and microdeformations with at least 9.5 kJ/mole of loparite.

EFFECT: providing effective opening of loparite concentrates with extraction of 99% of rare-earth metals to the solution.

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