Phosphoric acid production gypsum filtration flocculant pre-dilution (make down) with post-filtration phosphoric acid

使用过滤后的磷酸的磷酸制备石膏过滤絮凝剂的预稀释(浓度降低)

Abstract

描述了用于使添加到磷酸制备工艺中的水最小化的方法。所述方法使用磷酸稀释絮凝剂,该絮凝剂被添加至该工艺中以促进粗磷酸的过滤或澄清。优选地,所述磷酸为从磷酸制备工艺本身回收的粗的、澄清的磷酸。
A method for minimizing the addition of water to a phosphoric acid production process is described. The method uses phosphoric acid to make down a flocculant that is added to the process in order to promote filtration or clarification of crude phosphoric acid. Preferably, the phosphoric acid is a crude, clarified phosphoric acid that is recycled from the phosphoric acid production process itself.

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    US-4263148-AApril 21, 1981Earth Sciences, Inc.Process for removing humic matter from phosphoric acid solutions

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