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公开(公告)号：US4747924A
公开(公告)日：1988-05-31
申请号：US036102
申请日：1987-04-08
摘要： A process and an apparatus for producing a neodymium-iron alloy by electrolytic reduction of neodymium fluoride in a bath of molten electrolyte, consisting essentially of 35-76% by weight of neodymium fluoride, 20-60% by weight of lithium fluoride, up to 40% by weight of barium fluoride and up to 20% by weight of calcium fluoride, conducted between one or more iron cathode and one or more carbon anode. The apparatus comprises an electrowinning cell of refractory materials coated inside with a lining resistive to the bath, the carbon anode of constant transverse cross-sectional shape over its length, immersed into the electrolyte bath at its free end, the iron cathode of constant transverse cross-sectional shape over its length, immersed into the electrolytic bath at its free end, a receiver placed on the bottom of the cell for collecting the produced neodymium-iron alloy in a liquid state on the tip of the iron cathode, siphoning means for withdrawing the molten alloy pooled in the receiver out of the cell, and feeding means for feeding the ever wearing iron cathode into the electrolyte bath so as to apply the direct current to the iron cathode with a predetermined current density.
摘要翻译： 一种用于通过在熔融电解质浴中电解还原氟化钕来生产钕 - 铁合金的方法和装置，其基本上由35-76重量％的氟化钕，20-60重量％的氟化锂组成，直至 在一个或多个铁阴极和一个或多个碳阳极之间进行40重量％的氟化钡和至多20重量％的氟化钙。 该装置包括涂覆在其内部的耐熔材料的电解沉积池，其具有耐熔池的衬里，其长度上具有恒定横截面形状的碳阳极，浸入其自由端的电解质浴池中，恒定横向交叉的铁阴极 在其长度上的截面形状，浸入其自由端的电解浴中，放置在电池底部的接收器，用于在铁阴极的尖端上收集液态的所生产的钕 - 铁合金，用于抽出的虹吸装置 将熔融合金收集在电池内的接收器中，以及馈送装置，用于将经过磨损的铁阴极供入电解槽中，以便以预定电流密度将直流施加到铁阴极。
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公开(公告)号：US4684448A
公开(公告)日：1987-08-04
申请号：US776800
申请日：1985-09-17
摘要： A process and an apparatus for producing a neodymium-iron alloy by electrolysis reduction of neodymium fluoride in a bath of molten electrolyte, consisting essentially of 35-76% by weight of neodymium fluoride, 20-60% by weight of lithium fluoride, up to 40% by weight of barium fluoride and up to 20% by weight of calcium fluoride, conducted between one or more iron cathode and one or more carbon anode. The apparatus comprises an electrowinning cell of refractory materials coated inside with a lining resistive to the bath, the carbon anode of constant transverse cross-sectional shape over its length, immersed into the electrolyte bath at its free and, the iron cathode of constant transverse cross-sectional shape over its length, immersed into the electrolytic bath at its free end, a receiver placed on the bottom of the cell for collecting the produced neodymium-iron alloy in a liquid state on the tip of the iron cathode, siphoning means for withdrawing the molten alloy pooled in the receiver out of the cell, and feeding means for feeding the ever wearing iron cathode into the electrolyte bath so as to apply the direct current to the iron cathode with a predetermined current density.
摘要翻译： 一种用于通过在熔融电解质浴中电解还原氟化钕来生产钕 - 铁合金的方法和装置，其基本上由35-76重量％的氟化钕，20-60重量％的氟化锂组成，直至 在一个或多个铁阴极和一个或多个碳阳极之间进行40重量％的氟化钡和至多20重量％的氟化钙。 该装置包括涂覆在其内部的耐熔材料的电解沉积池，其具有耐熔池的衬里，其长度上具有恒定横截面形状的碳阳极，浸入其游离的电解质浴池中，并且恒定横向交叉的铁阴极 在其长度上的截面形状，浸入其自由端的电解浴中，放置在电池底部的接收器，用于在铁阴极的尖端上收集液态的所生产的钕 - 铁合金，用于抽出的虹吸装置 将熔融合金收集在电池内的接收器中，以及馈送装置，用于将经过磨损的铁阴极供入电解槽中，以便以预定电流密度将直流施加到铁阴极。
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公开(公告)号：US4808283A
公开(公告)日：1989-02-28
申请号：US177999
申请日：1988-04-05
摘要： A method of producing high purity aluminum-lithium mother alloys essentially free from sodium, potassium and calcium, which comprises electrolyzing mixed molten salts consisting essentially of lithium chloride and potassium chloride preferably under a cathodic current density in the range of 0.005 to 1 A/cm.sup.2, using one or more hollow cylindrical solid aluminum cathodes, and thereby producing an aluminum-lithium alloy on the cathodes. In the method, the mixed molten salts may be composed essentially of 34 to 64 wt. % of lithium chloride and 66 to 36 wt. % of potassium chloride, and, optionally, 1 to 20 wt. % of sodium chloride based on a combined weight of the aforesaid two components. Preferably, throughout the electrolysis, the potential difference between the cathode and a two-phase (.alpha.+.beta.) aluminum-lithium alloy reference electrode is continuously measured and differentiated with respect to time and at the point of a sudden change in the differentiated value, the electrolysis is stopped.
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