| 摘要 |
A process for extraction of sodium from NORM-containing materials in which the NORM-containing materials are treated with a first acid, forming a spent acid solution comprising dissolved carbonates, salts, iron and/or sulfates, and a NORM-containing solid material. The NORM-containing material is separated from the spent acid solution and treated with concentrated sulfuric acid, dissolving the NORM and forming a NORM-containing acid. Any undissolved solids are removed from the NORM-containing acid which is then saturated with barite. To precipitate the NORM in the NORM-containing acid, water is added, preferably in stages to the barite-saturated NORM-containing acid. Essentially, all NORM-free components in scales, sludges, and soils are separated from the NORM and its carrier. The NORM-containing product, preferably barite, is a fine powder suitable for use in several subsequent disposal technologies.
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