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A PROCESS OF PRODUCING PURIFIED PHOSPHORIC ACID BY REMOVING ALUMINUM MAGNESIUM AND IRON IMPURITIES FROM WET PROCESS PHOSPHORIC ACID
A PROCESS OF PRODUCING PURIFIED PHOSPHORIC ACID BY REMOVING ALUMINUM MAGNESIUM AND IRON IMPURITIES FROM WET PROCESS PHOSPHORIC ACID
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机译:一种从湿法磷酸中去除铝镁和铁杂质的方法来生产纯正磷酸
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摘要
A method of removing aluminum, magnesium, iron and other impurities from wet process phosphoric acid is provided. The method comprises partially ammoniating the acid and reacting the acid with a fluoride ion donating compound to precipitate aluminum- and magnesium-containing ralstonite and ammonium fluorosilicate which can be easily separated from the acid thereby producing a partially ammoniated wet process phosphoric acid of reduced impurities content.
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