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US3980754A Purification of alkali carbonate containing a fluorine compound 失效
含氟化合物的碱金属碳酸盐的净化

Purification of alkali carbonate containing a fluorine compound
摘要:
An alkali carbonate containing a fluorine compound is purified by dissolving the crude alkali carbonate in an aqueous solution or suspension of magnesium bicarbonate in order to transfer the fluorine impurity into the resulting colloidal flocculated precipitate whereby the fluorine is substantially separated from the aqueous solution of the alkali carbonate.
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