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Process for the spontaneous precipitation of sulfates dissolved in water as calcium aluminium sulfate and the application of this process for the preparation of low-chloride gypsum-anhydrite containing aluminium oxide
Process for the spontaneous precipitation of sulfates dissolved in water as calcium aluminium sulfate and the application of this process for the preparation of low-chloride gypsum-anhydrite containing aluminium oxide
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机译:以硫酸铝钙的形式自发沉淀溶解于水中的硫酸盐的方法及其在制备含氧化铝的低氯化石膏中的应用
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摘要
The invention relates to a process for the spontaneous chemical precipitation of sulphates dissolved in water as calcium aluminium sulphate, using a hydrated lime (calcium hydroxide) suspension and a sodium hydroxoaluminate solution as precipitants, and the application of this process for preparing calcium aluminium sulphates which can be processed on an industrial scale into low-chloride anhydrous gypsum (anhydrite) containing alumium oxide using a thermal process known per se.
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