| 摘要 |
Acids are recovered from solutions containing metal salts by spray roasting them. The first spray roasting (the evaporation phase) is carried out with a short dwell time and is followed by a separate roasting (the oxidation phase) with a significantly longer dwell time. Also claimed is an apparatus for carrying out this process that includes a spray roaster (1) and a separate area (4) for the subsequent roasting.
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