Units for Metal Swarf and Cooling Lubricant Recycling

Functional Principle

In order to rid the metal swarf of the oil, it is inserted into the extraction vessel in a perforated tray. Subsequently, the vessel is flooded with solvent.
After a preset residence time, the solvent-oil-mixture is drained from the extraction vessel into the distillation vessel. Here, the solvent is evaporated and, via a recooler unit, piped back into the storage tank, from where it can be resupplied to the process.

Functional Principle of Metal Swarf and Cooling Lubricant Recycling by LÖMI
 

The distillation process is supported and accelerated by applying a vacuum. The complete cycle is passed through, as a rule, two to three times, depending on the kind of the metal swarf and its oil content.

After the last washing cycle, the extraction vessel is heated so that the solvent still remaining in the abraisive slurry can be piped into the storage tank via a second recooler unit. After this drying cycle, the extraction vessel contains the oil- and solvent-free metal swarf.