JPS63161181A - Production of high-purity aluminum-lithium mother alloy - Google Patents
Production of high-purity aluminum-lithium mother alloyInfo
- Publication number
- JPS63161181A JPS63161181A JP30545286A JP30545286A JPS63161181A JP S63161181 A JPS63161181 A JP S63161181A JP 30545286 A JP30545286 A JP 30545286A JP 30545286 A JP30545286 A JP 30545286A JP S63161181 A JPS63161181 A JP S63161181A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- lithium
- alloy
- aluminum
- mother alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 26
- 239000000956 alloy Substances 0.000 title claims abstract description 26
- 229910001148 Al-Li alloy Inorganic materials 0.000 title claims abstract description 15
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 239000001989 lithium alloy Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 229910052708 sodium Inorganic materials 0.000 abstract description 9
- 229910052791 calcium Inorganic materials 0.000 abstract description 6
- 229910052700 potassium Inorganic materials 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 14
- 239000011734 sodium Substances 0.000 description 13
- 239000010406 cathode material Substances 0.000 description 11
- 239000011575 calcium Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000028161 membrane depolarization Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910007857 Li-Al Inorganic materials 0.000 description 1
- 229910008447 Li—Al Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- -1 sodium and potassium Chemical compound 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、高純度のアルミニウム−リチウム母合金の製
造方法に関する。詳しくはナトリウム、カリウム等のリ
チウム以外のアルカリ金属とカルシウムを実質土倉まな
いアルミニウム−１ノチウム母合金の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a high purity aluminum-lithium master alloy. Specifically, the present invention relates to a method for producing an aluminum-1-notium mother alloy that does not contain substantially any alkali metals other than lithium, such as sodium and potassium, and calcium.
［従来の技術］
従来方法によるアルミニウム−リチウム母合金の製造は
、大要法の２工程で行われている。[Prior Art] The production of an aluminum-lithium master alloy by a conventional method is carried out in two main steps.
■ 金属リチウムの電解採取工程
■ 溶解・鋳造工程
■の工程は、塩化リチウムと塩化カリウムの混合溶融塩
の電解による金属リチウムの製造工程であり、■の工程
は、■の工程により製造された金属リチウムを母合金の
組成に所要な量でアルミニウムに加えて共に溶解して母
合金の鋳塊を得る工程である。■ Electrolytic extraction process for metallic lithium ■ Melting/casting process The process ■ is a process for producing metallic lithium by electrolysis of a mixed molten salt of lithium chloride and potassium chloride. This is a process in which lithium is added to aluminum in an amount required for the composition of the master alloy and melted together to obtain an ingot of the master alloy.
実用上価値のある高純度のアルミニウム−リチウム母合
金としては、ｌｉ含有量が１０重四％以上であり、また
Ｎａ、にの含有量がそれぞれ５ｐｐｍ以下であり、かつ
Ｃａの含有量がｉ ｏｐｐｍ以下である必要がある。A high-purity aluminum-lithium mother alloy having practical value has a Li content of 10% by weight or more, a Na content of 5 ppm or less, and a Ca content of i oppm. Must be below.
現在、市販されている高純度電解リチウム（９９，９％
）は、Ｎａ、におよびＣａの含有量がそれぞれ２００ｐ
ｐｍ、 １１００ｐｐおよび２００ｐｐｍ程度であって
、これを用いて高純度のアルミニウム−リチウム母合金
を製造することは不可能である。Currently, commercially available high-purity electrolytic lithium (99.9%
) has a content of Na, Ca and 200p each.
pm, 1100 ppm and 200 ppm, and it is impossible to manufacture a high purity aluminum-lithium mother alloy using this.
また超高純度電解リチウム（Ｎａ≦ｓｏｐｐｍ）を製造
するには、リチウムの電解採取工程に対して、リチウム
塩や金属リチウムの精製工程の追加が必要となる。Furthermore, in order to produce ultra-high purity electrolytic lithium (Na≦soppm), it is necessary to add a lithium salt or metallic lithium purification process to the lithium electrolytic extraction process.
［発明か解決しようとする問題点］
リチウムの精製をカスによる溶湯処理によって行なう場
合には、リチウムの損失が大きい障害がある。更に従来
方法の金属リチウム電解における電流効率は比較的低く
、例えば７０％から９０％どまりである。[Problems to be Solved by the Invention] When lithium is purified by molten metal treatment using scum, there is a problem in that the loss of lithium is large. Furthermore, the current efficiency in conventional metal lithium electrolysis is relatively low, for example, only 70% to 90%.
以上の他、従来のアルミニウム−リチウム母合金の製造
方法では、前記の■工程によって、電解リチウムとアル
ミニウムの再溶解が不可欠であり、その際に高活性であ
るリチウムは変質し劣化を起こしやすい。これを防ぐに
は希ガスによる溶解雰囲気の調整が必要となる。更に、
低融点で比重が小さいためリチウムは凝固過程で偏析を
起こしやすい。したがって、従来方法によって常に安定
して一定組成の母合金を製造することは不可能である。In addition to the above, in the conventional method for producing an aluminum-lithium mother alloy, it is essential to re-dissolve the electrolytic lithium and aluminum in the step (1) described above, and at this time, highly active lithium is likely to undergo deterioration and deterioration. To prevent this, it is necessary to adjust the dissolution atmosphere using a rare gas. Furthermore,
Because of its low melting point and low specific gravity, lithium is prone to segregation during the solidification process. Therefore, it is impossible to always stably produce a master alloy having a constant composition using conventional methods.
本出願人はこれらの問題点を解決する方法としてさきに
特願昭５８−２１５９８９号を開発した。この方法はア
ルミニウム−リチウム母合金の電解製造において、陰極
に固体アルミニウムを用いることを骨子とする方法であ
る。この場合、電解が進行すると、アルミニウム陰極の
表面層から中心部に向って合金化が進むとともに膨張す
る。そして膨張が進むにつれて、合金図に亀裂が生じ、
その亀裂は徐々に大きくなる。亀裂が大きくなるにつれ
て以下の問題が生じる。The present applicant previously developed Japanese Patent Application No. 58-215989 as a method to solve these problems. This method is a method in which solid aluminum is used as a cathode in the electrolytic production of an aluminum-lithium master alloy. In this case, as electrolysis progresses, alloying progresses from the surface layer of the aluminum cathode toward the center, and the aluminum cathode expands. As the expansion progresses, cracks appear in the alloy diagram,
The crack gradually grows larger. As the crack grows larger, the following problems arise.
■ 合金取出時に亀裂内に電解浴が取り込まれる。■ Electrolytic bath is taken into the crack when the alloy is removed.
■ 陰極電流密度が変動する。■ Cathode current density fluctuates.
■ 合金の欠落の恐れがおる。■ There is a risk of alloy chipping.
■ 陰極装入部の占有面積か大きくなる。■ The area occupied by the cathode charging section increases.
［問題点を解決するための手段］
本発明は、上記問題点を解決するもので、塩化リチウム
と塩化カリウムからなる混合溶融塩を陰極に中空筒状固
体アルミニウムを用いて電解し、該陰極にアルミニウム
−リチウム合金を生成させることを特徴とする高純度ア
ルミニウム−リチウム母合金の製造方法でおる。[Means for Solving the Problems] The present invention solves the above problems by electrolyzing a mixed molten salt of lithium chloride and potassium chloride using a hollow cylindrical solid aluminum as a cathode. A method for producing a high-purity aluminum-lithium mother alloy, which is characterized by producing an aluminum-lithium alloy.
以下、本発明について詳しく説明する。The present invention will be explained in detail below.
本発明者らはＬｉＣｌとＫＣＩとの混合溶融塩の電解に
おいて、陰極に中空固体アルミニウムを用いて電解を行
なえば、析出１−ｉを電解浴面に浮上させることなく、
かつ、Ｎａ、におよびＣａを析出させることなしにＡ１
陰極に高純度のＡｌ−１ｉ合金を生成させることができ
る。In the electrolysis of a mixed molten salt of LiCl and KCI, the present inventors found that if the electrolysis was carried out using hollow solid aluminum as the cathode, the deposit 1-i would not float to the surface of the electrolytic bath.
And A1 without precipitating Na and Ca.
A high purity Al-1i alloy can be produced at the cathode.
しかもそのＡｌ−１−ｉ合金の生成は、理由は定かでは
ないが、中空固体アルミニウムカソードを用いた場合に
は、中空部分に向けてのストレス方向となり、膨張も同
方向に生じると思われ、ざらに、Ａｌ棒の場合と異なり
、ストレスが開放されるために亀裂の発生、合金の欠落
等の問題が少ないものと考えられる。Moreover, the reason for the formation of the Al-1-i alloy is not clear, but when a hollow solid aluminum cathode is used, the stress is directed toward the hollow part, and expansion is thought to occur in the same direction. In general, unlike the case of Al rods, it is thought that because the stress is released, there are fewer problems such as cracking and chipping of alloy.
第１図は本発明を実施するための基本的な説明図で、１
は電解槽であり、内部にしＩＣ１とＫＣＩの混合溶融塩
４を収容し、これに黒鉛等からなる陽極５と中空筒状固
体アルミニウムの陰極２とを対置浸漬する。３は陰極リ
ード、６は陽極リードであり、７は陽極に発生する塩素
ガス捕集排出管でおる。FIG. 1 is a basic explanatory diagram for implementing the present invention.
is an electrolytic cell which contains a mixed molten salt 4 of IC1 and KCI, into which an anode 5 made of graphite or the like and a hollow cylindrical solid aluminum cathode 2 are immersed oppositely. 3 is a cathode lead, 6 is an anode lead, and 7 is a collection and discharge pipe for chlorine gas generated at the anode.
この場合陰極電流密度は０．００５〜Ｉ Ａ／Ｃｍ２の
範囲とする。０．００５ Ａ／ｃｍ２より小さいとＬｌ
の析出量が少なく、結果としてＡｌ−１−ｉ合金の生成
量が少なくなって生産性が極めて低く、非工業的であり
、又、Ｉ Ａ／Ｃｍ’より大きいとＬｉ単味が陰極に析
出し合金化の歩留りが低下するので好ましくない。In this case, the cathode current density is in the range of 0.005 to IA/Cm2. Ll if smaller than 0.005 A/cm2
As a result, the amount of Al-1-i alloy produced is small, resulting in extremely low productivity and non-industrial use.Also, if it is larger than IA/Cm', single Li will precipitate on the cathode. This is not preferable because the yield of alloying decreases.
又、高純度Ａｌ−１−ｉ合金が生成する理由については
、電解によって陰極面に析出したｌ−ｉが固体Ａｌ内に
拡散してＬｉ−Ａｌ化合物を生成し、この生成化合物に
よって陰極の分極が減少する減極作用によって、ＬｉＣ
ｌの分解電圧が低下するのに対し、Ｎａにはこのような
減極作用がないので、ＮａＣｌの分解電圧は変らず、Ｃ
ａは合金化による減極効果でＣａＣｌ２の分解電圧は低
下するが、Ｃａの合金的拡散はＬ１に比較して相当遅れ
るので、結果として分解電圧が変らない。また、ＫＣＩ
の分解電圧はもともと１−ｉＱＩより大きいので、Ｌｉ
の減極効果によってその差は拡大し、結果としてｌ−ｉ
だけが析出し、陰極材にＮａ、におよびＣａの混入が起
らないことによるものと考察される。In addition, the reason why high-purity Al-1-i alloy is formed is that l-i deposited on the cathode surface by electrolysis diffuses into solid Al to generate Li-Al compounds, and this generated compound causes polarization of the cathode. Due to the depolarization effect that decreases LiC
While the decomposition voltage of L decreases, Na has no such depolarization effect, so the decomposition voltage of NaCl remains unchanged and C
In a, the decomposition voltage of CaCl2 decreases due to the depolarization effect due to alloying, but since the alloying diffusion of Ca is considerably delayed compared to L1, the decomposition voltage does not change as a result. Also, KCI
Since the decomposition voltage of is originally larger than 1-iQI, Li
The difference increases due to the depolarization effect of l−i
This is considered to be due to the fact that only Na, Ca and Na are precipitated, and that Na, Ca and Na are not mixed into the cathode material.
［実施例］ 次に実施例について比較例と共に説明する。[Example] Next, examples will be described together with comparative examples.
前記第１図に示した如き電解槽１に４５ｗｔ％ＬｉＣｌ
と５５ｗｔ％ＫＣ＋よりなる混合溶融塩４を入れ、これ
に黒鉛からなる陽極５とその対極として第２図ないし第
４図に示す形状の各種陰極２を吊下げる。45 wt% LiCl was added to the electrolytic cell 1 as shown in FIG.
A mixed molten salt 4 consisting of KC+ and 55 wt% KC+ is put therein, and an anode 5 made of graphite and various cathodes 2 having the shapes shown in FIGS. 2 to 4 as counter electrodes are suspended therein.
第２図（ａ）は実施例の陰極材で、外径８０ｍｍ、内径
５０ｍｍよりなる９９．７％Ａ Ｉ 、Ｎａ＜５ｐｐｍ
なる組成の円筒状のものである。第３゛図（ａ）は他の
実施例の陰極材で、外径８０ｍｍ、内径６０ｍｍのもの
で、同じり９９．７％Ａ１の円筒状のものである。Figure 2 (a) shows the cathode material of the example, which has an outer diameter of 80 mm and an inner diameter of 50 mm, with 99.7% A I and Na<5 ppm.
It has a cylindrical shape and has the following composition. FIG. 3(a) shows a cathode material of another embodiment, which has an outer diameter of 80 mm, an inner diameter of 60 mm, and is also cylindrical with 99.7% A1.
第４図（ａ）は比較例の陰極材で、直径８０ｍｍの円柱
状のものである。FIG. 4(a) shows a comparative example of a cathode material having a cylindrical shape with a diameter of 80 mm.
実施例１
第２図（ａ）に示す陰極材を用い、電流密度０、０７Ａ
／Ｃｍ ’で電解した。結果的に陰極材の膨張は第２図
（ｂ）に示す程度、すなわち外径８２ｍｍ、内径３５ｍ
ｍとなり、亀裂は発生しなかった。母合金の組成は１１
．４ｗｔ％ｌ−ｉで、Ｎａ濃度は５ｐｐｍ以下であった
。Example 1 Using the cathode material shown in Figure 2(a), the current density was 0.07A.
/Cm'. As a result, the expansion of the cathode material was as shown in Figure 2 (b), that is, the outer diameter was 82 mm and the inner diameter was 35 mm.
m, and no cracks occurred. The composition of the master alloy is 11
．． At 4 wt% l-i, the Na concentration was 5 ppm or less.
実施例２
第３図（ａ）に示す陰極材を用い、電流密度０、 ＩＯ
Ａ／ｃｍ’で電解した。結果的に第３図（ｂ）に示すよ
うに外径８４ｍｍ、内径４０ｍｍとなって亀裂は僅少で
無視し得る程度であった。母合金の組成は２０ｗｔ％ｌ
−ｉで、Ｎａ濃度は５ｐｐｍ以下であった。Example 2 Using the cathode material shown in FIG. 3(a), the current density was 0, IO
Electrolysis was carried out at A/cm'. As a result, as shown in FIG. 3(b), the outer diameter was 84 mm and the inner diameter was 40 mm, and the cracks were slight and could be ignored. The composition of the master alloy is 20wt%l
-i, the Na concentration was 5 ppm or less.
比較例
第４図（ａ）に示す陰極材を用い、電流密度０、７Ａ／
Ｃｍ ２で電解したところ、陰極材の外面から合金化が
進行し、第４図（ｂ）に示すように外径９５〜１０５ｍ
ｍと膨張し、亀裂が多数発生した。Comparative Example Using the cathode material shown in Figure 4(a), the current density was 0, 7A/
When electrolyzed with Cm2, alloying progressed from the outer surface of the cathode material, and as shown in Figure 4(b), the outer diameter was 95 to 105 m.
It expanded and many cracks occurred.
母合金の組成は１１ｗｔ％Ｌｉで、Ｎ８９度は５ｐｐｍ
以下であった。The composition of the master alloy is 11 wt% Li, and the N89 degree is 5 ppm.
It was below.
［発明の効果］ 本発明の方法によれば下記のような効果が得られる。[Effect of the invention] According to the method of the present invention, the following effects can be obtained.
（１）陰極の外径がほとんど変らず、すなわち外側へ向
っての膨張が小ざいので、表面亀裂が入りにくい。(1) Since the outer diameter of the cathode hardly changes, that is, outward expansion is small, surface cracks are less likely to occur.
（２）外径変化が小さいため、電解槽の陰極部をコンパ
クトにすることができる。(2) Since the outer diameter change is small, the cathode part of the electrolytic cell can be made compact.
（３）陰極表面の亀裂が少ないため、取出時の付着浴發
が少なく、浴汚染が少ない。(3) Since there are few cracks on the surface of the cathode, there is less adhesion of the bath during removal and less bath contamination.
（４）陰極の外径変化が僅少であるため陰極電流変動が
無視でき、操業が安定する。(4) Since the change in the outer diameter of the cathode is small, cathode current fluctuations can be ignored, resulting in stable operation.
（５）陰極の表面に亀裂が発生することが少ないので、
小塊の欠落の恐れが少ない。(5) Since cracks are less likely to occur on the surface of the cathode,
There is less risk of missing small lumps.
第１図は本発明の詳細な説明するための説明図、第２図
（ａ）、（ｂ） 、第３図（ａ）、 （ｂ）は本発明の
実施に用いる陰極材とその電解後の断面図、第４図（ａ
）、 （ｂ）は比較例の陰極材とその電解後の断面図で
ある。
１・・・電解槽、２・・・陰極、３・・・陰極リード、
４・・・混合溶融塩、５・・・陽極、６・・・陽極リー
ド、７・・・塩素ガス排出管。Fig. 1 is an explanatory diagram for explaining the present invention in detail, Fig. 2 (a), (b), and Fig. 3 (a), (b) show the cathode material used in carrying out the present invention and its electrolyzed material. Cross-sectional view of Figure 4 (a
) and (b) are cross-sectional views of a comparative example of a cathode material and its electrolyzed state. 1... Electrolytic cell, 2... Cathode, 3... Cathode lead,
4...Mixed molten salt, 5...Anode, 6...Anode lead, 7...Chlorine gas discharge pipe.
Claims (2)
を陰極に中空筒状固体アルミニウムを用いて電解し、該
陰極にアルミニウム−リチウム合金を生成させることを
特徴とする高純度アルミニウム−リチウム母合金の製造
方法。(1) A high-purity aluminum-lithium mother alloy characterized in that a mixed molten salt consisting of lithium chloride and potassium chloride is electrolyzed using a hollow cylindrical solid aluminum as a cathode to form an aluminum-lithium alloy on the cathode. Production method.
て電解する特許請求の範囲第（１）項記載の高純度アル
ミニウム−リチウム母合金の製造方法。(2) A method for producing a high-purity aluminum-lithium mother alloy according to claim (1), in which electrolysis is carried out at a cathode current density of 0.005 to 1 A/cm^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30545286A JPS63161181A (en) | 1986-12-23 | 1986-12-23 | Production of high-purity aluminum-lithium mother alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30545286A JPS63161181A (en) | 1986-12-23 | 1986-12-23 | Production of high-purity aluminum-lithium mother alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63161181A true JPS63161181A (en) | 1988-07-04 |
| JPH0213035B2 JPH0213035B2 (en) | 1990-04-03 |
Family
ID=17945315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30545286A Granted JPS63161181A (en) | 1986-12-23 | 1986-12-23 | Production of high-purity aluminum-lithium mother alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63161181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04504592A (en) * | 1989-03-24 | 1992-08-13 | コマルコ アルミニウム リミテッド | Tough aluminum-lithium, aluminum-magnesium and magnesium-lithium alloys |
| CN103060851A (en) * | 2013-01-18 | 2013-04-24 | 哈尔滨工程大学 | Method for preparing erbium-thulium alloy containing reinforced aluminum-lithium through molten salt electrolysis co-reduction |
-
1986
- 1986-12-23 JP JP30545286A patent/JPS63161181A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04504592A (en) * | 1989-03-24 | 1992-08-13 | コマルコ アルミニウム リミテッド | Tough aluminum-lithium, aluminum-magnesium and magnesium-lithium alloys |
| CN103060851A (en) * | 2013-01-18 | 2013-04-24 | 哈尔滨工程大学 | Method for preparing erbium-thulium alloy containing reinforced aluminum-lithium through molten salt electrolysis co-reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0213035B2 (en) | 1990-04-03 |
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