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    • 6. 发明授权
    • Treatment of norm-containing materials for minimization and disposal
    • 处理含有规范的材料以减少和处置
    • US5550313A
    • 1996-08-27
    • US326507
    • 1994-10-20
    • Christopher G. Hayden
    • Christopher G. Hayden
    • C22B60/00G21F9/30A62D3/00G21F9/34
    • G21F9/30C22B60/00
    • 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.
    • 一种从含NORM的材料中提取钠的方法,其中含有NORM的材料用第一种酸处理,形成包含溶解的碳酸盐,盐,铁和/或硫酸盐的废酸溶液以及含NORM的固体物质。 将含NORM的材料与废酸溶液分离,并用浓硫酸处理,溶解NORM并形成含NORM的酸。 从含有NORM的酸中除去任何未溶解的固体,然后用重晶石饱和。 为了在含NORM的酸中沉淀NORM,将水优选分阶段加入到重晶石饱和的含NORM的酸中。 从本质上讲,秤,污泥和土壤中的所有无NORM组件与NORM及其载体分离。 含NORM的产品,优选重晶石,是适用于几种后续处理技术的细粉。