Where do emissions come from at a hydrofluoric acid plant?
Hydrofluoric acid is made by reacting fluorspar with sulphuric acid in an indirectly heated rotary kiln. The kiln fuel is the main Scope 1 source. Purchased sulphuric acid and fluorspar, with its mining and drying, sit in Scope 3. HF feeds refrigerants and aluminium fluoride.
Scope 1 and 2
- Fuel for kiln heating.
- Electricity for kiln drive, scrubbers and refrigeration for condensing HF.
Scope 3
- Fluorspar, including drying.
- Sulphuric acid, unless made on site.
- Gypsum disposal, if sent away.
What Senseible does here
Senseible reads bills, fuel invoices and production records into dated, fingerprinted records, so the figure you send a buyer can be traced to its documents.
Sources: IPCC 2006 Guidelines, Volume 2 Energy (fuel defaults), GHG Protocol Corporate Standard, GHG Protocol Corporate Value Chain (Scope 3) Standard
Last reviewed 2026-10-22.