The project
An integrated xanthates, NaHS and CS₂ plant at Sines
A single site producing SIBX xanthates and NaHS, with CS₂ generated on site as an intermediate and surplus CS₂ sold to industrial users.
Overview
Three outputs, one integrated site
Integrating CS₂ production on site lets the plant feed both downstream lines directly, rather than importing CS₂ — and sell the surplus.
Feedstock
Sulfur
Feedstock
Carbon
Feedstock
Sodium hydroxide
Feedstock
Isobutanol
On-site intermediate
CS₂ unit
20,000 tpa
Product
SIBX xanthates
20,000 tpa
Sodium isobutyl xanthate — flotation collector
Product
NaHS 70% flake
29,500 t/yr
Sodium hydrosulphide — sulphidiser / leach reagent
Merchant output
Surplus CS₂ sold
Excess carbon disulphide sold to industrial users
Site
Sines, Portugal — Zona de Indústria Ligeira de Sines (ZILS)
Capacity
SIBX 20,000 tpa · NaHS 29,500 t/yr · CS₂ 20,000 tpa
Stage
Development — FID planned Dec 2027, first production 2030
Timeline
Development to first production
Indicative milestones, subject to permitting, financing and final investment decision.
2026
Development
Land, permitting, partner agreements, offtake LOIs and financing in progress.
2027
Permitting · FID
Permitting targeted for 2027; final investment decision planned for December 2027.
2028
Construction
Construction planned to begin in 2028.
2030
First production
First production targeted for January 2030.
Site & standards
Designed to EU standards
Permitting, Seveso compliance and environmental assessment are part of the development plan. Detailed process data and hazard information remain confidential.
Elythium is in the development phase. Plant scope, partners and timelines are indicative and subject to permitting, financing and final investment decision.