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公开(公告)号：EP0052354B1
公开(公告)日：1985-09-04
申请号：EP81109660.1
申请日：1981-11-12
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公开(公告)号：EP0052354A3
公开(公告)日：1982-08-11
申请号：EP81109660
申请日：1981-11-12
摘要： A process for preparing high purity superfine powders of less than 0.5µ diameter of Mo, W, Nb, Zr, Cu, Zn, Co, Ni and In by first producing their fluoride or a double fluoride with ammonium and then decomposing them under heat in a hydrogen-containing stream. Features of the present process are that the double fluoride of the metals with ammonium is faster in crystal growth than the fluoride, recrystallization of these salts can be repeated as desired when a high purity of the metals is required, and particles of a uniform size can be obtained easier.
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3.发明公开
公开(公告)号：EP0052354A2
公开(公告)日：1982-05-26
申请号：EP81109660.1
申请日：1981-11-12
摘要： A process for preparing high purity superfine powders of less than 0.5µ diameter of Mo, W, Nb, Zr, Cu, Zn, Co, Ni and In by first producing their fluoride or a double fluoride with ammonium and then decomposing them under heat in a hydrogen-containing stream. Features of the present process are that the double fluoride of the metals with ammonium is faster in crystal growth than the fluoride, recrystallization of these salts can be repeated as desired when a high purity of the metals is required, and particles of a uniform size can be obtained easier.
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公开(公告)号：EP0235999A1
公开(公告)日：1987-09-09
申请号：EP87301325.4
申请日：1987-02-16
IPC分类号： C25C1/00
CPC分类号： C25C1/00
摘要： A metal which is Ni, Co, Zn, Cu, Mn or Cr is produced electrolytically by a process comprising:
electrolyzing an aqueous solution containing ions of such a metal in a cathode compartment to deposit the metal electrolytically on a cathode,
the cathode compartment being separated by one or more diaphragms from solution in an anode compartment containing a soluble anode of iron or a metal containing iron, and
reducing the concentration of iron in the solution in the anode compartment by circulating the whole or a part of that solution to means whereby the concentration of iron in the circulating solution is reduced.摘要翻译： Ni，Co，Zn，Cu，Mn或Cr的金属是通过以下方法电解生产的，该方法包括：在阴极室中电解含有这种金属的离子的水溶液，以在阴极上电解沉积金属，阴极 隔室由包含铁或含铁金属的可溶性阳极的阳极室中的溶液与一个或多个隔膜隔开，并且通过循环该溶液的全部或一部分来降低阳极室中的溶液中铁的浓度 意味着循环溶液中铁的浓度降低。
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公开(公告)号：EP0079246B1
公开(公告)日：1989-01-25
申请号：EP82305986.0
申请日：1982-11-10
CPC分类号： B01D9/0036 , B01D9/005
摘要： A crystallizer comprises a crystallizer body 1 having a generally cylindrical upper part and a lower part conjoined with the other part and of a generally conical shape, apex lowermost. A mixing zone 4 is provided within the upper part of the body 1, to which zone are supplied an aqueous separating solution and an organic solvent containing extracted ions of a metal. The tank defining the mixing zone 4 has a pipe 6 descending therefrom, down to the lower part of the body 1 and beneath the pipe 6 is provided a fluidizing liquid inlet 8. Separating solution may be removed from the body through a ring pipe 17 and discharge pipe 16 by means of a pump 9, at least a portion of the removed solution being recirculated through the fluidizing inlet 8. The temperature of such recirculated solution may be adjusted as necessary. Crystals are discharged through pipe 12, whereas organic solvent may be removed from settling zone 5, through pipe 11. In operation, the extracted ions in the solvent are transferred to the separating solution to form a metal salt there, which salt is barely soluble in the solution and consequently crystal nuclei start to form in the descending pipe 6, which crystals are developed in zone 7 of the body 1, for subsequent removal through the pipe 12.
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公开(公告)号：EP0079246A3
公开(公告)日：1985-11-06
申请号：EP82305986
申请日：1982-11-10
CPC分类号： B01D9/0036 , B01D9/005
摘要： A crystallizer comprises a crystallizer body 1 having a generally cylindrical upper part and a lower part conjoined with the other part and of a generally conical shape, apex lowermost. Amixing zone 4 is provided within the upper part of the body 1, to which zone are supplied an aqueous separating solution and an organic solvent containing extracted ions of a metal. The tank defining the mixing zone 4 has a pipe 6 descending therefrom, down to the lower part of the body 1 and beneath the pipe 6 is provided a fluidizing liquid inlet 8. Separating solution may be removed from the body through a ring pipe 17 and discharge pipe 16 by means of a pump 9, at least a portion of the removed solution being recirculated through the fluidizing inlet 8. The temperature of such recirculated solution may be adjusted as necessary. Crystals are discharged through pipe 12, whereas organic solvent may be removed from settling zone 5, through pipe 11. In operation, the extracted ions in the solvent are transferred to the separating solution to form a metal salt there, which salt is barely soluble in the solution and consequently crystal nuclei start to form in the descending pipe 6, which crystals are developed in zone 7 of the body 1, for subsequent removal through the pipe 12.
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公开(公告)号：EP0055486B1
公开(公告)日：1985-04-17
申请号：EP81110824.0
申请日：1981-12-29
CPC分类号： C22B3/0068 , C01F7/30 , C01F7/50 , C22B3/0017 , C22B3/0024 , C22B3/0077 , C22B3/0087 , C22B3/0089 , C22B3/0093 , C22B3/0095 , Y02P10/234
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公开(公告)号：EP0079246A2
公开(公告)日：1983-05-18
申请号：EP82305986.0
申请日：1982-11-10
CPC分类号： B01D9/0036 , B01D9/005
摘要： A crystallizer comprises a crystallizer body 1 having a generally cylindrical upper part and a lower part conjoined with the other part and of a generally conical shape, apex lowermost. Amixing zone 4 is provided within the upper part of the body 1, to which zone are supplied an aqueous separating solution and an organic solvent containing extracted ions of a metal. The tank defining the mixing zone 4 has a pipe 6 descending therefrom, down to the lower part of the body 1 and beneath the pipe 6 is provided a fluidizing liquid inlet 8. Separating solution may be removed from the body through a ring pipe 17 and discharge pipe 16 by means of a pump 9, at least a portion of the removed solution being recirculated through the fluidizing inlet 8. The temperature of such recirculated solution may be adjusted as necessary. Crystals are discharged through pipe 12, whereas organic solvent may be removed from settling zone 5, through pipe 11.
In operation, the extracted ions in the solvent are transferred to the separating solution to form a metal salt there, which salt is barely soluble in the solution and consequently crystal nuclei start to form in the descending pipe 6, which crystals are developed in zone 7 of the body 1, for subsequent removal through the pipe 12.摘要翻译： 结晶器包括结晶器主体1，其具有大致圆柱形的上部和与另一部分结合的下部，并且具有顶点最下部的大致圆锥形状。 在主体1的上部设置有混合区域4，向该区域供应水分离溶液和含有金属萃取离子的有机溶剂。 限定混合区4的罐具有从其下降的管6，向下到达主体1的下部并且在管6下方设置有流化液入口8.分离溶液可以通过环管17从主体移除，并且 通过泵9排出管道16，至少一部分被去除的溶液通过流化入口8再循环。这种再循环溶液的温度可以根据需要进行调节。 晶体通过管12排出，而有机溶剂可以通过管道11从沉降区5中除去。在操作中，溶剂中提取的离子被转移到分离溶液中以形成金属盐，该盐几乎不溶于 在下管6中开始形成溶液，从而使晶体形成，该下降管6在体1的区域7中形成晶体，以便随后通过管12去除。
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公开(公告)号：EP0055486A1
公开(公告)日：1982-07-07
申请号：EP81110824.0
申请日：1981-12-29
CPC分类号： C22B3/0068 , C01F7/30 , C01F7/50 , C22B3/0017 , C22B3/0024 , C22B3/0077 , C22B3/0087 , C22B3/0089 , C22B3/0093 , C22B3/0095 , Y02P10/234
摘要： The subject matter of the invention is a process for producing aluminum oxide, characterized by the following steps
(1) extracting aluminum ions with an organic solvent containing one or more compounds selected from the groups of alkyl phosphoric acids, alkyl and aryl thio phosphoric acids, carboxylic acids and hydroximes together with a petroleum hydrocarbon as a diluent;
(2) preparing aluminum compounds containing fluorine by stripping the aluminum ions contained in the organic solvent of step (1) by contacting the organic solvent with an aqueous solution containing one or more compounds selected from the groups of HF, NH 4 HF 2 , NH 4 F or KHF 2 and simultaneously regenerating the organic solvent; and
(3) producing aluminum oxide by heating the aluminum compounds containing fluorine resulting from step (2) in a gas stream containing oxygen or H 2 O.摘要翻译： 本发明的主题是一种生产氧化铝的方法，其特征在于以下步骤：（1）用含有一种或多种选自烷基磷酸，烷基和芳基硫代磷酸酯的有机溶剂萃取铝离子 酸，羧酸和盐酸肟与石油烃一起作为稀释剂;（2）通过使有机溶剂与含有一种水溶液的溶液接触来制备步骤（1）的有机溶剂中包含的铝离子，从而制备含氟的铝化合物 或更多选自HF，NH 4 HF 2，NH 4 F或KHF 2的化合物，同时再生有机溶剂; 和（3）通过在含有氧或H 2 O的气流中加热由步骤（2）得到的含有氟的铝化合物来生产氧化铝。
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