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MEI Online: Hydrometallurgy: Latest News: October 18th 2016


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ALTA 2017


:: Developments In Hydromet Processing Of Nickel Laterites


Efforts to develop lower cost and simpler hydromet alternatives to pressure acid leaching (PAL) for laterites are being made by a number of organizations. Processes retaining sulphuric acid as lixiviant include various atmospheric tank leaching concepts and heap leaching. Atmospheric leaching processes using hydrochloric and nitric acid are also being developed. Meanwhile the number of pressure acid leaching operations is increasing, with some major projects still ramping up towards full production, and by-product scandium operations are being developed.


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