When hydrogen peroxide is added during the sulfuric acid leaching of nickel and cobalt, the leaching efficiency decreases
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In the previous experiment, I initially used only sulfuric acid for leaching, and the results seemed okay; however, after adding hydrogen peroxide, the outcomes turned out to be even worse. What reactions are taking place, or is hydrogen peroxide inhibiting the effect of sulfuric acid? Let’s discuss this together, or share your experience and analysis.
The original poster should explain in detail the composition of the mineral material, so that everyone can make an assessment
Mainly nickel, cobalt, tungsten, molybdenum, rhenium, zirconium, hafnium, and aluminum. Nickel the most
Was it the addition of too much hydrogen peroxide that diluted the concentration of sulfuric acid?
I don’t think so; adding it should enhance the effect of sulfuric acid, and the amount of hydrogen peroxide is only one-fifth or one-sixth of the original amount.
The addition of hydrogen peroxide oxidizes the metal to a higher valence state, making the metal insoluble and affecting the leaching rate
Will it? What are the specific effects of hydrogen peroxide on cobalt and chromium? Are there any relevant materials or literature? Or maybe this friend has done something like this before
I have carried out leaching of nickel and cobalt; the reduced form is easy to leach, while the oxidized form is difficult to leach
As for nickel and cobalt in the alloy, I’m not sure either; it doesn’t seem like either of them is present
It must be a high-melting-point rare metal alloy of the cemented carbide type. Is it in solid block form or powder form? I have worked with powder form, carrying out comprehensive recovery of all metals, and the results were quite good.
It is a superalloy that has been processed into powder; it is now undergoing acid leaching. What process do you use?