The primary use of distillation is the separation of solids or two or more liquids, which has multiple applications in CRS including solvent recovery, asphalt recovery and rolling oil recovery. The latter process is to control mill lubricants in rolling mill coolants. This can be accomplished in either a kidney loop or batch system dump configuration.
The CRS Distillation process allows for additional recovery of additives and base coolants beyond the filtration process. Flow requirements, mill lube levels and coolant additives must be considered when designing a distillation system. Distillation is also used for recycling glycols from cutting and grinding operations, and recovering spent solvents from various industrial operations.