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Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid
Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid
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机译:由天然纯碱和正磷酸制备正磷酸钠浆料的连续方法
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摘要
Unmilled commercially available granular "natural" soda ash is reacted with orthophosphoric acid to produce a highly concentrated slurry at a molar Na:P ratio of about 1.5 in a continuous process. Problems associated with incomplete reaction are solved and the slurry can be dried to the double salt Na.sub.3 H.sub.3 (PO.sub.4).sub.2 or reacted with aqueous sodium hydroxide to produce a superior precursor for manufacturing sodium tripolyphosphate.
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机译:在连续过程中,将未研磨的可商购获得的颗粒状“天然”苏打灰与正磷酸反应,以Na:P摩尔比约为1.5产生高度浓缩的浆料。解决了与不完全反应有关的问题,可以将浆液干燥至复盐Na 3 Sub 3 H 3(PO 4 4)2或与氢氧化钠水溶液反应生成用于制造三聚磷酸钠。
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