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method for separating iron ions from aluminum ions contained in an acidic composition and method for treating an acidic composition comprising iron ions and aluminum ions
method for separating iron ions from aluminum ions contained in an acidic composition and method for treating an acidic composition comprising iron ions and aluminum ions
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机译:从酸性组合物中包含的铝离子中分离铁离子的方法和处理包含铁离子和铝离子的酸性组合物的方法
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摘要
There are provided methods for separating iron ions from aluminum ions contained in an acidic composition. The methods comprise reacting the acidic composition with a basic aqueous composition having a pH of at least 10.5 so as to obtain a precipitation composition, maintaining the precipitation composition at a pH above 10.5 so as to cause precipitation of the iron ions, at least substantially preventing precipitation of the aluminum ions, and to obtain a mixture comprising a liquid portion and a solid portion; and separating the liquid portion from the solid portion. There are also provided methods for treating an acidic composition comprising iron ions and aluminum ions. Such methods can be useful for preparing products such as alumina, aluminum, hematite etc.
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