Crystallisation

For the crystallisation of metal fluorides, a system was developed that makes it possible to regenerate the resulting pickling baths. This is an evaporation
crystallization process. Vapour-volatile substances such as nitric acid, hydrofluoric acid and water are distilled. At the same time metal crystals are
formed, which are discharged via a suitable device and separated at a separate stage of the liquid. In order to implement the process in this way and with
particularly high-quality materials, this is done in a vacuum.

The systems are adapted to local conditions. Additional pre-concentration stages can be integrated for larger volume flows.

CRIS 400 S - Evaporation crystallisation

CRIS 400 S - Verdampfungs-kristallisation

Materials	Steel PFA coated, silicon carbide, PVDF
Heating medium	Hot water, 85°C
Distillate output	400 l/h
Customer	CEZUS; France
Use	HNO₃+HF+Zr concentrate, crystal mush ZrF+H₂O, distillate is acid for pickling process

Werkstoffe
Stahl PFA beschichtet, Silicium Karbid, PVDF
Heizmedium
Heißwasser, 85 °C
Destillatleistung
400 l/h
Kunde
CEZUS; Frankreich
Einsatz
HNO3+HF+Zr aufkonzentrieren, Kristallbrei ZrF+H2O, Destillat ist Säure für Beizprozess

CRIS 140 S - Evaporation crystallisation

CRIS 140 S - Verdampfungs-kristallisation

Materials	Steel PFA coated, FEP lining, silicon carbide, PVDF
Heating medium	Hot water 95°C
Distillate output	140 l/h
Customer	CEZUS; France
Use	HNO₃+HF+Zr concentrate, crystal mush ZrF+H₂O, distillate is acid for pickling process

Werkstoffe
Stahl PFA beschichtet, FEP-Auskleidung, Silicium Karbid, PVDF
Heizmedium
Heißwasser 95°C
Destillatleistung
140 l/h
Kunde
CEZUS; Frankreich
Einsatz
HNO3+HF+Zr aufkonzentrieren, Kristallbrei ZrF+H2O, Destillat ist Säure für Beizprozess

CRIS 50 S - Evaporation crystallisation

CRIS 50 S - Verdampfungs-kristallisation

Materials	Steel PFA coated, FEP lining, silicon carbide, PVDF
Heating medium	Hot water 90°C
Distillate output	50 l/h
Customer	Outokumpu; Sweden
Use	Preparation of a stainless steel pickling bath

Werkstoffe
Stahl PFA beschichtet, FEP-Auskleidung, Silicium Karbid, PVDF
Heizmedium
Heißwasser 90 °C
Destillatleistung
50 l/h
Einsatz
Aufbereitung eines Edelstahl-Beizbades

Laboratory crystalliser 1,2

Materials	Steel PFA coated, FEP lining, silicon carbide, PVDF
Distillate output	1,2 l/h
Use	Crystallisation of metal fluorides and other strong acid media

Werkstoffe
Stahl PFA beschichtet, FEP-Auskleidung, Silicium Karbid, PVDF
Destillatleistung
1,2 l/h
Einsatz
Kristallisation von Metallfluoriden und anderen stark sauren Medien