Aluminium extrusion die cleaning and alkali recovery system
Aluminium extrusion die cleaning and alkali recovery system
Aluminium extrusion die cleaning and alkali recovery system
The Die Cleaning and Alkali Recovery System is an integrated, eco-friendly, and energy-saving solution specifically designed for two critical processes in aluminum profile extrusion: die cleaning and alkaline wastewater recovery.
An aluminium extrusion die alkali recovery system is an automated, closed-loop industrial solution designed to recycle the spent caustic soda (sodium hydroxide, NaOH) used during the die etching and cleaning process.
During extrusion, aluminium residues get trapped inside the intricate cavities of the steel dies. To clear them, the dies are soaked in a concentrated caustic bath, which dissolves the aluminium but leaves the solution heavily contaminated with sodium metaaluminate (NaAlO₂). An alkali recovery system chemically reverses this process to regenerate the cleaning solution
