The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.
介绍了氟硅酸、 碳酸氢铵制备冰晶石的新工艺。
The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.
介绍了氟硅酸、碳酸氢铵制备冰晶石的新工艺。
The conditions and the selection of the optimization process that rare earths are extracted by the ammonium hydrocarbonate precipitation are studied.
研究用碳酸氢铵沉淀法分离稀土的各种条件和最优工艺的选择。
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