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Roasting And Leaching Processess For Chromium

Chromium was selectively recovered from ferronickel slag by roasting the slag with addition of Na 2 O 2, followed by water leaching.The thermodynamic analysis revealed that in the presence of Na 2 O 2 at appropriate temperatures, the Cr 2 O 3 in the ferronickel slag can be converted to NaCrO 2, instead of Na 2 CrO 4, which prevents the formation of highly toxic Cr VI.

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    Roasting Leaching Crusher Me Mining Machinery

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    Journal Of Applied And Theoretical Physics Research

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    Nickel And Cobalt Losses From Laterite Ore After

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  • A New Method Of Potassium Chromate Production From

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    Jul 13, 2009 A new method of chromate production by applying a new reaction system of KOHKNO 3 H 2 O binary submolten salt system is proposed and proved feasible. Under conditions of temperature 350 C, KOHtochromite ore ratio 21, stirring speed 700 rpm, KNO 3 tochromite ore ratio 0.81, oxygen partial pressure 50, and gas flow 1 Lmin, chromium conversion ratio obtained is 98 with ...

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  • Process For Extracting Chromium From Chromium Ores

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