DEVELOPMENT METHOD OF SCHEELITE CONCENTRATES Russian patent published in 2013 - IPC C22B34/36 C22B3/12 

FIELD: metallurgy.

SUBSTANCE: method involves preliminary machining of initial raw material and further treatment of activated material with Na₂CO₃ soda solution. With that, preliminary machining is performed till the amount of energy adopted in the form of surface of coherent dissipation areas is achieved, which is equal to 25-27 kJ/mol of scheelite, and the amount of energy adopted in the form of microdeformations, which is equal to at least 2.3 kJ/mol of scheelite. Treatment with Na₂CO₃ soda solution is performed at the temperature of 99°C.

EFFECT: simplifying the development method owing to performing a leaching process at atmospheric pressure and reduced temperature.

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