Ingeniously simple: Sodium carbonate precipitation system from Weinreich.

Increasingly high quality demands from end customers require effective precipitation of sodium carbonate from the electroplating bath. Its disposal represents a not inconsiderable cost factor for the company. An effective sodium carbonate precipitation should therefore be seamlessly integrated into the production process and have a high precipitation performance with a low moisture content of the waste. This is where the solution developed by Weinreich comes into play: effective water separation occurs with the help of a freezing process, which reduces the cost of the sodium carbonate to be disposed of to a minimum. The water content of the precipitated sodium carbonate is a fraction of that of most commercial precipitation techniques, which tend to produce sludge with a high water content.

The electrolyte solution to be cleaned can be taken from the ongoing production process and is cooled in the double-walled stainless steel tank so much that the sodium carbonate freezes on the edges of the tank. This process runs fully automatically and takes about 4-6 hours on average. After the cleaned solution has been pumped out and returned to the electroplating tank, the almost dry sodium carbonate can be easily peeled off the inside wall of the tank. Using a spatula, the waste panels are drained through a 200 mm hole directly into a disposal container below. Depending on the size of the system, up to 100 kg of dry precipitated sodium carbonate are produced per cleaning process.

Various safety devices and a high level of automation ensure a low-risk process that can be quickly learned even by inexperienced employees. With a bath volume of 18 m3, the Weinreich system precipitates an average of 750 kg of sodium carbonate per week. Due to the generously dimensioned tank and the fast precipitation process, it is possible to react quickly and effectively to order peaks, since several precipitation processes are possible per day.

As with all other Weinreich products, all components of the sodium carbonate precipitation system are 100% made in Germany and designed for a long service life and maximum operational reliability.

Conclusion: The sodium carbonate precipitation system from Weinreich is characterized by an ingeniously simple structure and thus easy operation and very low susceptibility to faults. This ensures a consistently high quality of the zinc electrolyte solution and the galvanized products.