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公开(公告)号:US4035293A
公开(公告)日:1977-07-12
申请号:US596708
申请日:1975-07-17
CPC分类号: C01B25/322 , C02F1/025 , C02F1/5236
摘要: Disclosed is a process for purifying an effluent containing acids such as phosphonic and phosphoric acids by the addition of CaO or Ca(OH).sub.2 in an amount ranging from 55-93 per cent by weight basis acids at a temperature of 35.degree. to 100.degree. C to a pH of 8 to 12. After removing the precipitated material, the effluent can be neutralized with CO.sub.2 gas. The precipitate can be calcined to tri calcium phosphate.
摘要翻译: 公开了一种通过在35〜100℃的温度下添加量为55-93重量%的CaO或Ca(OH)2来纯化含有酸如膦酸和磷酸的流出物的方法。 C至pH为8至12.在除去沉淀的材料后,流出物可用CO 2气体中和。 可以将沉淀物煅烧成三磷酸钙。