Talk about the performance transformation of copper extractants and the compatibility with industrial extractants

The properties of copper extractants are mainly shown in purification and phase separation. The purification characteristics include large copper loading level, positive extraction level, stripping level, purification kinetic model and Cu/Fe selectivity. Phase separation characteristics include phase separation speed and carrier level. After the copper extractant is dissolved, the overall purification level will weaken, especially the reduction of aldehyde oxime content, which will do great harm to the purification capacity.

As time goes by, the purification level of organic phase during operation will be more and more inconsistent with that of the new extractant used during flushing. If Cl - or NO3 - exists in the purification system software, it is very likely that the copper extractant will generate chlorination or diazotization reaction with this to form the corresponding chlorination extractant or nitration extractant. Their purification level is very strong, but the stripping level is relatively weak. It is difficult to extract copper with basic concentration of stripping acid, such as 200g/L hydrochloric acid, as a result, the net copper migration level of the extractant decreases.

For dissolved copper extractants, due to the influence of degradation products, the purification kinetic model of copper extractants will be slowed down, and the Cu/Fe selectivity will also become poor. If the organic phase cannot be purified for a long period of time, the continuous accumulation of degradation products in the purification system will lead to the increase of the proportion and viscosity of the organic phase, and the phase separation characteristics of the extractant will continue to deteriorate. In serious cases, it will have to stop work because of the inability to reasonably separate the phases.

Is metal material extractant compatible with industrial production extractant?

1、 Extractants are mainly widely used in rare metal chemical process applications, such as copper, zinc, cobalt nickel, cadmium, gold and silver, platinum metal materials, rare earth and other industries.

The functions of extractants mainly include: separating the main metal materials and residual metal ions, gathering the concentration value of main metal ions, purifying metal ions, changing the type of cations, etc.

Metal material extractants are usually some common hydroxide ions or methyl groups such as ammonium sulfate, ammonium salt, benzene, etc., which are replaced by some long-chain methyl groups. When metal materials are fused with these extractants, they will become metal material organics, which will be dissolved in the solvent. Because the fusion level of various metal materials with these extractants is different, the order of purifying metals with this extractant is different, and then the metal ions are separated.

2、 Most of the industrial extractants are dissolved in organic solutions. The common organic solutions are sulfonated kerosene (No. 260 aromatic oil), environmental solvent oil, etc. At the same time, it has a synergistic effect on the extractant, because it contains a small amount of aliphatic hydrocarbons. Dissolving in organic solution can also improve the purification level of extractants, improve the solubility of their metal material extracts, reduce viscosity, reduce their volatile energy, and reduce their water solubility.

Sulfonated kerosene is characterized by symmetrical and slow evaporation rate, less aliphatic hydrocarbon composition, less toxic and side effects, and higher safety factor. No peculiar smell, pure quality, volatilization and residue, not easy to air oxidation in case of heat, and the product quality meets the national industry standards. It is a good paint thinner for rare earth oxide extract.

That's all for the introduction of copper extractants. If you have any questions you don't understand, you can contact Xiao Bian, who will patiently answer them one by one.