Synthetic Cryolite

Criolite Sintetica


Cryolite (Na3AlF6, trisodium hexafluoroaluminate) is an important raw material for the primary aluminium smelting.

It is used as a flux agent to dissolve the alumina in the electrolytic metal extraction process. Cryolite is also consumed in the abrasives, ceramic and glass industries.

Fluorsid produces granular cryolite by reacting diluted hydrofluoric acid (HF) and aluminium hydrate (Al(OH)3). The H3AlF6 acid is then converted into sodium salt by ion exchange reaction with a sodium chloride solution. After a solid-liquid separation, the slurry of cryolite is calcined in an internally heated rotary kiln. The final product is in the form of pale pink granules. Milled cryolite is obtained from the granular quality after rotary milling.

Fluorsid’s cryolite plant has a production capacity of 5,000 MT/y.

Synthetic cryolite is available in 1 MT big bags or 25, 50 kg paper bags on pallets.






– PAPER BAG – 25 or 50 Kg


To report directly to our registered office, please write to:

Area Industriale di Cagliari
2a Strada Macchiareddu
09032 Assemini (CA)

Please state on the envelope COMPLAINT / REPORT SA8000 or COMPLAINT / ANTI-CORRUPTION REPORT 37001 – Code of Ethics – MOGC 231 depending on the subject matter of the report

You can also use the following reporting channels provided by Fluorsid S.p.A

For SA8000 Reports

Via e-mail through the dedicated account:

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  • Bureau Veritas Italia Spa, divisione Certificazione –
    Responsabile CSR, viale Monza, 347 – 20126 Milano
    Fax +39 02 2552980 | E mail

Accreditation Body:

  • SAAS Social Accountability Accreditation Services, (SAAS): 9 East, 37th Street, 10th Floor – New York, NY 10016 | tel: (212) 391-2106 | e-mail:

For Anti-Corruption Reports 37001 / Code of Ethics / Model 231

  • per posta elettronica –
  • ordinary email – Area Industriale di Cagliari 2a Strada Macchiareddu 09032 Assemini (CA) – Italia – reserved for the attention of the Organismo di Vigilanza 
  • through the platform (, accessible to people both inside and outside the company.

Thanks to:

Ing. Michele Lavanga

tech contents

Angelo Castellaneta