Crystallisation


Schulz+Partner designed a plant for the chrystallization of metal fluorides that allows to regenerate accruing pickling baths.

The applied proceeding is an evaporating-crystallizing procedure.

Vapor-volatile substances of content like nitric acid, hydrofluoric acid and water are distilled with the simultaneous forming of metal crystals. Those are discharged through an adequate attachment and separated from the liquid in a discrete stage.

The procedure is carried out under vacuum, among others because of the stability of the used high-quality substances. The plants are adjusted to the particular situation on site. Adequate procedures can be implemented as a pre-concentration stage with greater volume flow rates.





CRIS 400 S - Evaporation-Crystallisation

 
Materials 
 
Steel PFA coated
Silicium carbide
PVDF
Heating material  

Hot water, 85 C
Distillation capacity  

400 l/h
Customer
CEZUS; France
Task
HNO3+HF+Zr concentration
crystal-paste ZrF+H2O
destillate is acid for
chemical staining

CRIS 140 S - Evaporation-Crystallisation


Materials 
 
Steel PFA coated
FEP-coating inside
Silicium carbide
PVDF
Heating material 

Hot water, 95C
Destillate capacity  

140 l/h
Customer
CEZUS; France
Task
HNO3+HF+Zr concentration
crystal-paste ZrF+H2O
destillate is acid for
chemical staining

CRIS 50 S - Evaporation-Crystallisation

Materials

Steel PFA coated
FEP-coating inside
Silicium carbide
PVDF
Heating material  

Hot water, 90 C
Destillate capacity

50 l/h
Task
Treatment of stainless-steel
pickling bath

Lab-Crystallisor 1,2


Materials 
 
Steel PFA coated
FEP-coating inside
Silicium carbide
PVDF
Destillate capacity

1,2 l/h
Task
Crystallisation of metalfluorides
and other highly acidic mediums