Abstract
The present invention relates to hydrometallurgical methods for recovering metals from sulfide minerals. The present invention also relates to a use of a pregnant leach solution in a hydrometallurgical process for oxidizing and/or dissolving sulfide minerals contained in a feed material. The present invention further relates to a use of a sulfide-containing waste material in a hydrometallurgical process for reducing ferric iron contained in a pregnant leach solution produced in the hydrometallurgical process. The present invention enables valuable metals recovery prior to iron removal.
Patent family as of 17.7.2026
FI130407 B, FI20215447 A, WO22219247 A1
Patent family as of 17.7.2026
FI130407 B, FI20215447 A, WO22219247 A1
| Original language | English |
|---|---|
| Patent number | FI130407 B |
| IPC | C22B15/00 |
| Priority date | 16/04/21 |
| Filing date | 16/04/21 |
| Publication status | Published - 16 Aug 2023 |
| MoE publication type | H1 Granted patent |
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