Rare-Earth Mixed Chloride Leach Solution Tank Selection

Storing Rare-Earth Mixed Chloride? Start Here

If you're dealing with rare-earth mixed chloride leach solution, you're handling a complex mix primarily used in rare-earth element separation processes. This solution is moderately corrosive due to its acidic nature, typically involving hydrochloric acid. It's crucial to choose the right storage tank to handle these conditions safely and effectively.

Can you store it in a poly tank?

Polyethylene tanks can be used for rare-earth mixed chloride solutions, but with limitations. At ambient temperatures and lower acid concentrations (less than 2 N HCl), high-density polyethylene (HDPE) tanks are acceptable. However, for higher temperatures and stronger acid concentrations, more resistant materials like fiberglass-reinforced plastic (FRP) or specialized alloys are recommended.

Key Issue: Corrosion Risk

The primary concern with storing rare-earth mixed chloride is its potential to cause chloride-induced pitting and crevice corrosion, especially at higher temperatures. This makes material selection critical to prevent damage and ensure longevity of the storage system.

The safety that actually matters

• Ensure tanks are rated for the specific acid concentration and temperature.
• Regularly inspect for signs of corrosion or wear.
• Follow all relevant safety and environmental regulations for handling and storing corrosive materials.

Common questions

What material should I use for high-temperature storage?

Consider using FRP, PVDF-lined steel, or specialized alloys like Hastelloy for high-temperature applications.

Can HDPE tanks handle the radiation levels?

HDPE is suitable for lower radiation levels, but ensure compliance with radiation control regulations.

How do I prevent scaling in my tanks?

Regular maintenance and monitoring for silica-fluoride scaling can help manage this issue.