Chemical processing plant Problem: Severe corrosion (8–10 mpy) on carbon steel heat exchanger tubes. Copper pitting in admiralty brass bundles. Frequent leaks every 18 months. Solution: Converted from a low-phosphate program to NALCO 8457 at 60 ppm residual, with pH controlled at 8.0–8.3 using sulfuric acid. Results:
The product uses advanced polymers to prevent the precipitation of minerals like calcium carbonate and calcium sulfate. By keeping these minerals in suspension, it prevents the formation of hard "scale" on heat exchange surfaces. nalco 8457
As he worked, a drop of the additive landed on his glove. In the glare of his torch, it caught the light, shimmering with an iridescent, almost biological sheen. For a moment, the industrial reality faded. He saw the complexity of the molecules—engineered by scientists in distant labs to fight a microscopic war against oxygen and mineral deposits. The Silent Legacy Solution: Converted from a low-phosphate program to NALCO
This precise chemistry is the gold standard for feeding into potlines to produce primary aluminum. As he worked, a drop of the additive landed on his glove