The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.

萃余液经一次性蒸发浓缩，可得到质量分数80%以上的硫酸。

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The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.

萃余液经一次性蒸发浓缩，可得到质量分数80%以上的硫酸。

youdao