Uranium recovery iron removal

The oxidizing atmosphere during the pretreatment of the ore helps to break up chemically the naturally occurring stable bonds in the solid, resulting in better dissolution rates. In a process developed for the recovery of scandium from uranium plant iron sludges (R15), the calcination of the sludge at 250°C was found to be very effective in the removal of organic materials and appreciably decreased the consumption of acid. 

The use of solvating extractants in the recovery of gold and platinum-group metals (PGM) was described in the previous section. These extractants have also found some specialized applications in the extractive metallurgy of base metals. For example, they have been used in the recovery of uranium, the separation of zirconium and hafnium, the separation of niobium and tantalum, the removal of iron from solutions of cobalt and nickel chlorides, and in the separation of the rare-earth metals from one another. 

LEMs have been applied for the separation and recovery of a host of different compounds. Previous efforts have been primarily focused on the recovery of metal ions from aqueous solutions (including copper, zinc, chromium, mercury, uranium, nickel, and iron (3)) and the removal of organic compounds from wastewater (14-17). 

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