Ion Exchange Resin for Wet Metallurgy

Ion exchange resins are particularly suitable for extracting separated metals from low grade minerals and tailings leaching or slurry, it plays an important role in separating metals with similar properties.

Lanlang ^® TA305GD Is a premium grade macroporous anion exchange resin with polystyrene matrix and both strong and weak base function group, which is specially designed for gold extraction by cyanidation in hydrometallurgy industry. Its specific matrix makes TA305GD has excellent resistance to mechanical attrition and osmotic pressure. TA305GD has macroporous structure with large specific surface area that provides high kinetic exchange capacity and total adsorption capacity.

Production practice has proved that the resin pulp method is better than carbon pulp method because resin has better performance in mechanical hardness, consumption loss, adsorption capacity and efficiency.

Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. Hydrometallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. Hydrometallurgy is typically divided into three general areas:

• Leaching
• Solution concentration and purification
• Metal or metal compound recovery

Solution concentration and purification
After leaching, the leach liquor must normally undergo concentration of the metal ions that are to be recovered. Additionally, undesirable metal ions sometimes require removal.

Ion exchange
Chelating agents, natural zeolite, activated carbon, resins, and liquid organics impregnated with chelating agents are all used to exchange cations or anions with the solution. [citation needed] Selectivity and recovery are a function of the reagents used and the contaminants present.

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