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Method of production of iron hydroxide, iron oxide hydrate or iron oxide from filter salts of thin acid recovery
Method of production of iron hydroxide, iron oxide hydrate or iron oxide from filter salts of thin acid recovery
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机译:由稀酸回收滤盐生产氢氧化铁,水合氧化铁或氧化铁的方法
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摘要
Recovery of iron hydroxide (IA), hydrated oxide (IB) or oxide (IC) from filter salts (II) from dilute acid recovery comprises dissolving (II) in water, adjusting the solution to pH below 1 and then to pH 2-4 by adding a strong base, with stirring; separating the precipitate as usual; adjusting the solution to pH 6-8 by adding a strong base and/or oxidant, separating precipitated (IA) or (IB), washing and drying and optionally drying and/or calcining to (IC).
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