Engitec built several aluminium recycling plants to process
the various types of scrap and to produce the alloys as required
by the most sophisticated Customers, specially for automotive
For the treatment of the Aluminium salt slag.
About STE Process
The Engitec’s proprietary technology for the secondary aluminium
industry is the STE process for the treatment of aluminium
The process is suitable also for small installations, so it
can be installed directly at the aluminium recyclers’ site.
STE allows the recovery of aluminium and salt, which Is re-used
in the melting process, and of fine clean oxides, which can
be suitable for other industrial applications as the cement
All polluting gases generated during the aluminium salt slag
leaching are combusted and the heat generated is used for water
evaporation and salt crystallization.
No Iiquid effluents are released from the plant and the gaseous
emissions are kept within regulatory Iimits.
• Salt recovery Is highly efficient (99%).
• The recovered oxides have a low chloride content (below 0,2%)
and are environmentally safe and weII accepted by the cement
• The process is Iow Iabour intensive
The continuous Phyrometallurgical plant to clean the painted
and oily aluminium scrap.
Oily and painted scrap are efficiently cleaned before being
The Engitec’s Scrap Decoater cleans the scrap from oil, grease
and painting in a high efficient energy system.
The scrap is automatically fed with the proper set rate into
the burning chamber and discharged clean into the receiving
The gas developed during the combustion is recirculated to
recover the waste heat, after proper afterburning, to meet
the most stringent environmental regulation.
A sophisticated control system guarantees the safe operations
maintaining the conditions under the explosion limits.