The operating of the niccolite ore and nickel extraction of it by DMG in ammoniacal media

In this research, a niccolite mineral (NiAs) contained ore, which is mined in Iran, was studied using XRD method and reflection microscope. Nickel separation from this ore was performed by dimethylglyoxime DMG in methods “A”, “B” and “C” at two classes I and II. Method “A” is usual technique of nickel dimethylglyoxime complex formation and appears competive with two new methods, called “B” and “C”. In method “B”, DMG is consumed directly in solid state without dissolving. In method “C”, DMG is dissolved in ammonium hydroxide solution before used. If the value of iron in the sample is low, three methods in class I are researchable, otherwise Class II for methods is used which has a preliminary step of iron elimination. The advantages and disadvantages of the methods are discussed.