Freeal – Sulphuric Acid Recovery System
The FREEAL system is designed to maintain the aluminium content of the solution at a constant desired value. This is achieved by drawing quantities of the acid solution from the bath, purifying and delivering back to the operating bath.
SOME OF THE ADVANTAGES OF THE FREEAL SYSTEM
- It is possible to achieve up to 90 to 95% efficiency (depending on individual operational conditions) realizing a significant saving in acid consumption. Of course acid consumption due to drag-out remains unchanged.
- The electrical energy required to operate the anodizing bath is reduced. (When the aluminium concentration in the solution increases, the voltage required to obtain the same current density also increases).
- Reduced cost of disposal neutralization due to reduced acid waste.
- Improved anodizing quality is achieved assisting with down stream processes (i.e. electrocolouring).