Information on rhenium refining
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Recently, the company has used oxygen pressure leaching for arsenic removal via sulfur dioxide, N235 for rhenium extraction, and concentrated and crystallized the back-extraction solution to obtain ammonium perrhenate! More than a ton of metals was used just to crystallize no more than 500 kilograms of ammonium perrhenate! Seek a method to refine rhenium without using this inefficient crystallization process!
It also includes the amount of rhenium metal in the system, which is no more than 800; after two months, it’s unclear where the rhenium went
:) Rhenium is an essential material for aerospace engines! ~~~
Your process should consist of the steps of leaching, arsenic removal using sulfur dioxide, extraction, back-extraction, and evaporation crystallization. By analyzing the data, it should be possible to determine at which step rhenium is lost. Then we can figure something out.
The problem is that crystallization doesn’t take place. At first, the boss said it was just a matter of adding more freezers, but those freezers kept breaking down, and all the company’s funds were tied up in them and couldn’t be used
I tried many methods – rhodium couldn’t be reduced using hydrazine hydrate, nor could it be reduced by zinc powder substitution; it’s contradictory!
That’s one ton of rhenium metal just for that task – your boss must be extremely wealthy indeed.
Ammonium perrhenate crystallizes very easily; I’ve been able to extract several hundred grams of rhenium from it. If there’s so much of it where you are, how is it not possible to extract it? Take a look at how much rhenium is in your back-extraction solution
This substance cannot be reduced using a reducing agent; concentration and crystallization after back-extraction is a better approach. The direction must be correct.
I’ve now solved the technical issues; I can crystallize it without concentration! The key is the high direct recovery rate; it’s also possible to remove metals from magazines. Hehe, even potassium can be removed – it seems that the process using resin adsorption has been surpassed!