Electrochemical production of aluminium hydroxide from alkaline aluminate liquors

K. Zeppenfeld

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Electrochemical production of aluminium hydroxide from alkaline aluminate liquors

机译：由碱性铝酸盐溶液电化学生产氢氧化铝

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Aluminium hydroxide is used on a large scale for aluminium production and also in many other industrial applications. For such purposes, this important chemical raw material is usually produced by seed crystallisation from supersaturated aluminate liquors or by the neutralisation of such liquors with acids. This article shows that aluminium hydroxide can be precipitated electrochemically from alkaline aluminate liquors. In this method, electrolysis reduces the pH around the anode so that excess alkaline liquor is neutralised and aluminium hydroxide is then precipitated. This electrochemical process may therefore provide an alternative to the production methods used until now.

机译：氢氧化铝被广泛用于铝生产以及许多其他工业应用中。为此目的，这种重要的化学原料通常是通过从过饱和的铝酸盐溶液中进行晶种结晶或通过用酸中和这些溶液而产生的。该文章表明，氢氧化铝可以从碱性铝酸盐溶液中电化学沉淀。在这种方法中，电解会降低阳极周围的pH值，以便中和过量的碱性液体，然后沉淀出氢氧化铝。因此，该电化学方法可以为迄今为止使用的生产方法提供替代方案。

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《Aluminium》 |2003年第9期|p.754-759|共6页
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K. Zeppenfeld;
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Electrochemical production of aluminium hydroxide from alkaline aluminate liquors

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