Polypropylene Glycol (PPG / Dowfroth-class) Frother Storage — Glycol-Ether Frother Tank Selection

Storing Polypropylene Glycol Frother? Start Here

Polypropylene glycol (PPG) frothers are essential for mineral flotation in mining operations, especially when you need a stable and persistent froth to extract metals like copper, lead, and zinc. These frothers are versatile, non-flammable, and low in toxicity, making them a popular choice in the industry. They're liquid at room temperature and have a high boiling point, which makes them easy to handle and store. However, like any chemical, proper storage is key to maintaining safety and effectiveness.

Can you store it in a poly tank?

Yes, PPG frothers can be safely stored in polyethylene (poly) tanks. Both high-density polyethylene (HDPE) and cross-linked polyethylene (XLPE) are suitable for storing neat PPG frother and its aqueous emulsions. These materials provide the necessary durability and chemical resistance for long-term storage.

Watch out for freezing temperatures

One key issue with storing PPG frothers is their varying freeze points, which depend on the specific product. Lower-molecular-weight products like Dowfroth 200 can freeze around -40°C, while higher-molecular-weight options like Dowfroth 400 freeze closer to -20°C. If you're in a cold climate, consider using UV-stabilized tanks with heat-tracing and insulation to prevent freezing.

The safety that actually matters

• Ensure tanks are UV-stabilized if stored outdoors to prevent degradation.
• Use heat-tracing and insulation in cold climates to prevent freezing.
• Handle spills promptly to avoid slip hazards.

Common questions

What type of gaskets should I use?

EPDM gaskets are standard, but you can also use Viton for more demanding applications.

Is PPG frother flammable?

No, PPG frother is non-flammable at typical storage and handling temperatures.

Can PPG frother be transported without special permits?

Yes, PPG frother is not regulated for transport and does not require special permits.