Arianne Phosphate said on 22 October that its partnership with Travertine Technologies had produced precipitated calcium carbonate during purified phosphoric acid production. A Canadian building-materials customer’s laboratory qualified the material in one formulation, according to the issuer’s announcement. The customer was not named.

The partners’ framework combines concentrate associated with Arianne’s Lac à Paul project in Quebec with Travertine’s process, which recycles sulphuric acid. Calcium carbonate is used in products including paper, plastics and construction materials. Arianne sees a potential additional revenue stream from material that would otherwise form a lower-value output.

The new result concerns calcium carbonate. It follows a separate 8 October announcement about pilot-scale phosphoric acid meeting a battery-materials producer’s requirements. Tests of additional acid samples sent to an industrial-chemicals company and a fertilizer producer remain pending.

Qualification in one customer formulation is a technical milestone, rather than proof of commercial-scale sales. The release does not disclose a binding purchase agreement, sales volumes or realized co-product revenue. Environmental and economic benefits are presented as the partners’ expectations, without a quantified emissions reduction in the announcement.