Acid leaching of spent molybdenum (Mo) catalyst followed by a simple pH-selective precipitation route for recovery of Co-Mo sulfide/oxide complexes in high yield has been investigated. The effect of leaching parameters ...

The paper describes a process for the recovery of manganese and nickel from the sulfuric acid leach liquor of Indian Ocean manganese nodules using starch as the reductant. The leach liquor contained 22.85 g/L manganese, ...

The rare earth elements neodymium and dysprosium were separated and recovered from NdFeB permanent magnet swarf by hydrometallurgical route. The magnet swarf was leached with HC1 after crushing and grinding, and from the ...

Solvent extraction of hydrochloric acid has been studied from solutions containing 185.42 g/L acid using Alamine 336, Aliquat 336, TBP and Cyanex 923 as extractants. Kerosene was used as the diluent. Extraction of hydrochloric ...

Separation of iron(III), copper(II) and zinc(II) from a mixed sulphate/chloride leach liquor bearing 11.8 kg/m(3) iron, 24.8 kg/m(3) copper, 0.23 kg/m(3) zinc, 3.8 kg/m(3) cobalt, 35.2 kg/m(3) nickel, 176.3 kg/m(3) chloride ...

The extraction of praseodymium was investigated from chloride media using different extractants such as D2EHPA, PC88A, Cyanex 272, Cyanex 921, Cyanex 923, Cyanex 301, Cyanex 302, LIX 84I, LIX 622N, Alamine 336, Aliquat 336 ...