JP2884348B2 - Electrolyzer for metal production - Google Patents
Electrolyzer for metal productionInfo
- Publication number
- JP2884348B2 JP2884348B2 JP7648089A JP7648089A JP2884348B2 JP 2884348 B2 JP2884348 B2 JP 2884348B2 JP 7648089 A JP7648089 A JP 7648089A JP 7648089 A JP7648089 A JP 7648089A JP 2884348 B2 JP2884348 B2 JP 2884348B2
- Authority
- JP
- Japan
- Prior art keywords
- partition
- electrolytic bath
- electrolytic
- chamber
- metal
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title claims description 25
- 229910052751 metal Inorganic materials 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000005192 partition Methods 0.000 claims description 54
- 238000005868 electrolysis reaction Methods 0.000 claims description 18
- 229910001507 metal halide Inorganic materials 0.000 claims description 3
- 150000005309 metal halides Chemical class 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- -1 MgCl 2 Chemical class 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えばMgCl2のような金属ハロゲン化物溶
融塩浴を用いて電気分解する金属製造用電解槽におい
て、生成する金属とハロゲンガスの確実な分離及び収集
を行うための電解槽構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrolytic cell for producing metal using a molten salt bath of a metal halide such as MgCl 2 , for example. The present invention relates to an electrolytic cell structure for performing reliable separation and collection.
従来、MgCl2を含む電解浴の電気分解によるMgとCl2の
製造においては、Mg、Cl2を含んだ電解浴を電解領域か
ら速やかに排出することが逆反応を少なくし、Mg、Cl2
の高い収率を保証するために必要欠くべからざる条件で
あることが知られている。Conventionally, in the production of Mg and Cl 2 by electrolysis of an electrolytic bath containing MgCl 2 , quickly discharging the electrolytic bath containing Mg and Cl 2 from the electrolysis region reduces the reverse reaction, and reduces Mg and Cl 2.
It is known that this is an indispensable condition in order to guarantee a high yield.
MgCl2を含む電解浴を電気分解して、MgおよびCl2ガス
を製造する双極式電解槽として、例えば特公昭62−3027
3号公報（特開昭59−6389号公報）が知られている。As a bipolar electrolytic cell for producing Mg and Cl 2 gas by electrolyzing an electrolytic bath containing MgCl 2 , for example, JP-B-62-3027
Japanese Patent Publication No. 3 (JP-A-59-6389) is known.
この電解槽における電解室中の電解浴の移動は、第５
図に示すように意図された電解浴レベルよりも上方に突
き出し、双極電極３の頂縁部16に沿って延在する上方開
放溝14に勾配を設け、電解室の電解領域を上昇してくる
Mg、Cl2を含んだ電解浴を前記上方開放溝14にのせ、堰1
0に向って流動させ、堰10を越えて垂直溝15を流下する
電解浴の流速を一定に制御するための、いわば勾配を有
する樋の構造によって達成されている。この構造は、堰
10と上方開放溝14との位置関係と、該溝14を流れる電解
浴の流速を一定に保持する必要性から、液位を常に一定
にすることが必須の条件となり、そのための電解浴レベ
ル調整器11を設けることが不可欠であることが明細書中
に説明されている。The movement of the electrolytic bath in the electrolytic chamber in this electrolytic cell is the fifth.
As shown, a slope is provided in the upper open groove 14 which projects above the intended electrolytic bath level and extends along the top edge 16 of the bipolar electrode 3 to ascend the electrolysis area of the electrolysis chamber.
An electrolytic bath containing Mg and Cl 2 is placed on the upper open groove 14, and the weir 1
This is achieved by a so-called sloping gutter structure for controlling the flow velocity of the electrolytic bath flowing toward zero and flowing down the vertical groove 15 beyond the weir 10. This structure is a weir
Due to the positional relationship between 10 and the upper open groove 14, and the necessity of keeping the flow rate of the electrolytic bath flowing through the groove 14 constant, it is essential that the liquid level be always constant. It is stated in the description that it is essential to provide a vessel 11.
また双極電極式電解槽ではないが、電解室からの速や
かなMg、Cl2を含んだ電解浴排出の手段として、ソ連特
許第458,614号明細書、同第458,617号明細書、同第522,
286号明細書、同第533,676号明細書、同第541,899号明
細書などに記述されているように、 （１） 陽極がメタル収集室に向って厚さが減少してい
る。Also, although not a bipolar electrode type electrolytic cell, as a means of quickly discharging the electrolytic bath containing Mg and Cl 2 from the electrolytic chamber, US Pat.No. 458,614, No. 458,617, No. 522,
As described in Japanese Patent Nos. 286, 533,676, and 541,899, (1) the thickness of the anode is reduced toward the metal collection chamber.
（２） 電解質後壁の電解浴レベル付近に傾斜をつけ
る。(2) Incline the area near the electrolytic bath level on the back wall of the electrolyte.
（３） 鋼製陰極に、メタル収集室に向う曲がったリブ
を付ける。(3) Attach curved ribs to the steel cathode facing the metal collection chamber.
（４） 鋼製陰極に、上昇流を強化する垂直リブを付け
る。(4) Attach vertical ribs to the steel cathode to enhance the upflow.
（５） メタル収集室に向かって、鋼製陰極の厚さを減
少する。(5) Reduce the thickness of the steel cathode towards the metal collection chamber.
等の、主に陽・陰極間空間を制御する構成が知られてい
る。Such a configuration is known that mainly controls the space between the positive electrode and the negative electrode.
前記した従来の電解槽構造には次のような問題点が存
在する。The above-mentioned conventional electrolytic cell structure has the following problems.
すなわち、特公昭62−30273号公報（特開昭59−6389
号公報）の電解槽においては、意図された電解浴レベル
よりも上方に突き出した双極電極頂縁部16に沿って設け
た上方開放溝14にMg、Cl2を含んだ電解浴をCl2の揚力に
より持ち上げ、さらに上方開放溝14から堰10を越えて垂
直溝15に制御された流速で流下させるために、電解浴レ
ベルは厳密に一定にする必要があり、第５図に示すよう
なメタル収集室７の電解浴中に設けた浴レベル調整器11
へのArガス出入による浴レベルの調整が必要不可欠とな
り、運転操作が複雑とならざるを得ない。That is, JP-B-62-30273 (JP-A-59-6389)
No. In the electrolytic bath), Mg upwardly open groove 14 than intended electrolytic bath levels provided along a bipolar electrode top edge 16 protruding upward, an electrolytic bath containing Cl 2 and Cl 2 The electrolytic bath level must be strictly constant in order to lift by lifting force and flow down from the upper open groove 14 over the weir 10 to the vertical groove 15 at a controlled flow rate. Bath level adjuster 11 provided in the electrolytic bath of collection room 7
Adjustment of the bath level by inflow and outflow of Ar gas into and out of the tank is indispensable, and the driving operation must be complicated.
また、ソ連特許第458,614号明細書、同第458,617号明
細書、同第522,286号明細書、同第533,676号明細書、同
第541,899号明細書などのような陽・陰極間空間の制御
は、双極式電解槽においては電極間距離が１〜2cmと小
さく、 （１） 電解浴の対流を制御し得るリブなどを電極対向
面に取付けられない。In addition, the control of the space between the positive and negative electrodes such as Soviet Patent No. 458,614, No. 458,617, No. 522,286, No. 533,676, No. 541,899, etc. In a bipolar electrolytic cell, the distance between the electrodes is as small as 1 to 2 cm, and (1) ribs capable of controlling the convection of the electrolytic bath cannot be attached to the electrode facing surface.
（２） 電解浴の対流を制御し得るメタル室側への極間
拡大は、電圧降下を大幅に増大させ、電力原単位を悪化
させる。(2) The increase in the distance between the metal chambers, which can control the convection of the electrolytic bath, greatly increases the voltage drop and deteriorates the power consumption.
等の理由により現実的でない。It is not realistic for reasons such as.
本発明は前記問題点を解決し、生成した金属とハロゲ
ンガスの効率的な分離および収集を行うことが出来る金
属製造用電解槽の提供を目的としている。An object of the present invention is to solve the above problems and to provide an electrolytic cell for metal production that can efficiently separate and collect generated metal and halogen gas.
上記目的を達成するための本発明の電解槽は、陽極１
と陰極２を配し、その上部に電解生成ガス収集室を設け
た電解室と、生成金属収集室７と、前記電解室と生成金
属収集室７との間に、電解室側に設けた第１の隔壁17
と、生成金属収集室７側に設けた第２の隔壁18により仕
切られて形成された中間室６とよりなる、上部に天井蓋
を設けた金属ハロゲン化物よりなる電解浴の電気分解を
行なうための双極電解式密閉型金属製造用電解槽であっ
て、前記第１の隔壁17には、その上端部に前記電解生成
ガス収集室と前記中間室６上部の空間との間で気体が移
動できる通気口が設けられて天井蓋に接続されており、
またその下端部は前記電解室と前記生成金属収集室７と
の間を電解浴が移動できるように開放されているととも
に電解浴レベルより下方位置に第１の隔壁17を貫通する
隔壁口５が設けられており、さらに前記第２の隔壁18
は、その上端部が前記天井蓋に密着して配置され、その
下端部は、前記第１の隔壁17に設けた隔壁口５より下方
で、第１隔壁17の下端部より上方の位置に配置されてな
るとともに、陽極１と陰極２との間に複数個の双極電極
３を備え、これら双極電極３の陰極面上部に、きりかき
部４が電解浴中に埋没するように設けてあり、前記きり
かき部４によって形成される電解浴流路は、前記第１隔
壁17に設けられた隔壁口５に向かって拡大された電解浴
流路断面12及び13を有することを構成上の特徴とするも
のである。In order to achieve the above object, the electrolytic cell of the present invention comprises an anode 1
And a cathode 2, an electrolysis chamber having an electrolysis product gas collection chamber provided thereon, a generated metal collection chamber 7, and a second electrolysis chamber provided between the electrolysis chamber and the generated metal collection chamber 7 on the electrolysis chamber side. 1 partition 17
And an intermediate chamber 6 formed by partitioning a second partition 18 provided on the side of the generated metal collecting chamber 7 to electrolyze an electrolytic bath made of a metal halide having a ceiling lid provided on the top. Wherein the first partition wall 17 is capable of moving gas between the electrolysis product gas collection chamber and the space above the intermediate chamber 6 at the upper end thereof. A vent is provided and connected to the ceiling lid,
Further, the lower end thereof is opened so that the electrolytic bath can move between the electrolytic chamber and the generated metal collecting chamber 7, and the partition wall port 5 penetrating the first partition 17 at a position below the electrolytic bath level is provided. And the second partition 18
The upper end thereof is disposed in close contact with the ceiling lid, and the lower end thereof is disposed below the partition opening 5 provided in the first partition 17 and above the lower end of the first partition 17. A plurality of bipolar electrodes 3 are provided between the anode 1 and the cathode 2, and a cutting portion 4 is provided above the cathode surface of the bipolar electrodes 3 so as to be buried in the electrolytic bath. The electrolytic bath flow path formed by the cutting part 4 has electrolytic bath flow path cross sections 12 and 13 that are enlarged toward the partition wall port 5 provided in the first partition wall 17, and has a structural feature. Is what you do.
本発明電解槽における前記電解浴流路断面12および13
は、電解浴レベルと該浴レベルより下方の電解浴中にあ
って、双極電極３の陰極面上部に設けたきりかき部４に
よって形成される。電解浴流路は前記きりかき部４の下
面に、後壁19の位置から、第１の隔壁17の電解浴レベル
より下方位置に設けた第１の隔壁17を貫通する隔壁口５
の下端に向って1/5〜1/40、好ましくは1/10〜1/20の下
降する勾配によって形成される［第３図（ｂ）］か、あ
るいはきりかき部４の側面部における双極電極３の厚さ
を1/10〜1/50、好ましくは15〜1/30の勾配をもって減少
する［第３図（ａ）］ように設けるか、前記の下降する
勾配と、厚さ減少とを併用して［第３図（ｃ）］設ける
ことにより形成される。The electrolytic bath flow path cross section 12 and 13 in the electrolytic cell of the present invention
Is formed in the electrolytic bath at the level of the electrolytic bath and in the electrolytic bath below the level of the bath, and is formed by a cut portion 4 provided above the cathode surface of the bipolar electrode 3. An electrolytic bath flow path is formed on the lower surface of the cutting portion 4 from the position of the rear wall 19 through the first partition 17 provided below the electrolytic bath level of the first partition 17.
[FIG. 3 (b)] formed by a descending gradient of 1/5 to 1/40, preferably 1/10 to 1/20 toward the lower end of The thickness of the electrode 3 may be reduced as shown in FIG. 3 (a) by decreasing the thickness of the electrode 3 with a gradient of 1/10 to 1/50, preferably 15 to 1/30. [FIG. 3 (c)].
本発明電解槽におけるきりかき部４は、前記の他に後
壁19から隔壁口５の下端に向かってその下面の勾配を下
降する段階状に形成しても、その側面部における双極電
極の厚さを段階状に減少するように設けることによって
もその目的を達成できる。In addition to the above, the cut portion 4 in the electrolytic cell of the present invention may be formed in a step shape in which the slope of the lower surface is lowered from the rear wall 19 toward the lower end of the partition opening 5, and the thickness of the bipolar electrode on the side portion thereof The object can also be achieved by providing the height in a stepwise manner.
本発明電解槽における前記の構成によれば、電解室か
ら中間室６を介してメタル収集室７へと流動する電解浴
の流れは、電解浴中に埋没した位置に形成されたきりか
き部４により、第４図（ａ）、（ｂ）または（ｃ）に示
すごとく、電解浴流路が隔壁口５に向かって拡大された
断面となることによって、浴レベル調整器の機能を必要
とせずに、かつ浴レベルの変動を許容した状態で安定的
に確保される。According to the above configuration of the electrolytic cell of the present invention, the flow of the electrolytic bath flowing from the electrolytic chamber to the metal collection chamber 7 via the intermediate chamber 6 is caused by the cutting part 4 formed at a position buried in the electrolytic bath. As a result, as shown in FIG. 4 (a), (b) or (c), the electrolytic bath flow path has a cross section that is enlarged toward the partition opening 5, so that the function of the bath level adjuster is not required. In addition, it is ensured stably while allowing the bath level to fluctuate.
本発明電解槽の構造と使用形態を、MgCl2を含む電解
浴を電気分解する場合を例として、第１図および第４図
に基づいて詳細に説明する。The structure and mode of use of the electrolytic cell of the present invention will be described in detail with reference to FIGS. 1 and 4, taking the case of electrolyzing an electrolytic bath containing MgCl 2 as an example.
本発明電解槽は、第１図に示すように、陽極１と陰極
２との間に複数の双極電極３を備えた複数の電極組立体
を設置した電解室とメタル収集室７との間に、電解浴レ
ベルの下方であって浴中に埋没した状態で形成される隔
壁口５を設けた第１隔壁17と、中間室６を設けるために
第２隔壁18を設け、さらに第１隔壁17の下方に隔壁下部
口９を設けることにより、電解室とメタル収集室との電
解浴は連通する構造となっている。As shown in FIG. 1, the electrolytic cell of the present invention is provided between an electrolysis chamber in which a plurality of electrode assemblies having a plurality of bipolar electrodes 3 are provided between an anode 1 and a cathode 2 and a metal collection chamber 7. A first partition wall 17 provided with a partition opening 5 formed below the electrolytic bath level and buried in the bath; a second partition wall 18 for providing the intermediate chamber 6; The lower part opening 9 of the partition wall provides a structure in which the electrolytic bath of the electrolytic chamber and the electrolytic bath of the metal collecting chamber communicate with each other.
本発明電解槽の電極構成は、第１図に示すように外部
より電解槽に挿入したグラファイト製陽極１と鋼製陰極
２との間に少なくとも１個以上のグラファイト製双極電
極３を配置し、該双極電極３の陰極面上部には、前記の
ごとく後壁19から隔壁口５下端に向かって電解浴流路の
断面積を拡大するように、きりかき部４が設けられてい
る〔第４図（ａ）、（ｂ）、（ｃ）参照〕。The electrode configuration of the electrolytic cell of the present invention is such that at least one or more graphite bipolar electrodes 3 are arranged between a graphite anode 1 and a steel cathode 2 inserted into the electrolytic cell from the outside as shown in FIG. The cutting portion 4 is provided above the cathode surface of the bipolar electrode 3 so as to increase the sectional area of the electrolytic bath flow path from the rear wall 19 toward the lower end of the partition wall opening 5 as described above [fourth embodiment]. Figures (a), (b) and (c)].
前記のように構成された本発明電解槽に直流電圧を印
加する。陽極１および双極電極３の陽極面からCl2、陰
極２および双極電極３の陰極面からMgが発生する。発生
したCl2ガスの上昇力により、狭い電極間にある電解浴
は、前記陰極面に発生したMgを取込ながら上昇し、双極
電極３の陰極面側上部４に構成された本発明構成部分に
達する。この部分は第１図〜第４図に示すとおり、電解
浴レベルより下方の電解浴中に埋没する位置に後壁19か
ら隔壁口５の下端に向かい、電解浴流路断面12に対し、
同断面13の断面積が増大するようにきりかき部４が設け
られている。双極電極３の頂縁部16は、電解浴レベルの
上に出ている。これにより、狭い電極間を上昇してきた
電解浴は、隣の電極上部の電解浴流動に影響されること
なく、しかも電解浴レベルの変動を許容した状態で後壁
19から隔壁口５に向って安定して流動する。A DC voltage is applied to the electrolytic cell of the present invention configured as described above. Cl 2 is generated from the anode surfaces of the anode 1 and the bipolar electrode 3, and Mg is generated from the cathode surfaces of the cathode 2 and the bipolar electrode 3. Due to the rising force of the generated Cl 2 gas, the electrolytic bath between the narrow electrodes rises while taking in the generated Mg on the cathode surface, and the component of the present invention formed on the cathode surface upper portion 4 of the bipolar electrode 3 Reach As shown in FIGS. 1 to 4, this portion extends from the rear wall 19 to the lower end of the partition wall opening 5 at a position buried in the electrolytic bath below the electrolytic bath level, and
The cutting portion 4 is provided so that the cross-sectional area of the cross section 13 increases. The top edge 16 of the bipolar electrode 3 protrudes above the electrolytic bath level. As a result, the electrolytic bath that has risen between the narrow electrodes is not affected by the flow of the electrolytic bath above the adjacent electrode, and the rear wall is allowed in a state that allows fluctuations in the electrolytic bath level.
It flows stably from 19 toward the partition wall opening 5.
また、双極電極３の頂縁部16が電解浴レベルの上に出
ていることにより、電流の漏れも防止される。Mgおよび
Cl2を含んだ電解浴は、この部分を隔壁口５に向かって
流れる間に、軽いCl2ガスの殆どを上部空間に放出しな
がら隔壁口５に至る。隔壁口５を出た電解浴は中間室６
に到達し、ここで完全にCl2を放出し、比重の近いMgと
共に第２隔壁18の下部を通り抜けてメタル収集室７に向
かう。メタル収集室７においてMgは電解浴と完全に分離
して浴上部に集まり、電解浴８は隔壁下部口９を通り電
解室に循環する。Also, since the top edge 16 of the bipolar electrode 3 is above the level of the electrolytic bath, current leakage is also prevented. Mg and
While the electrolytic bath containing Cl 2 flows through this portion toward the partition opening 5, the electrolytic bath reaches the partition opening 5 while releasing most of the light Cl 2 gas into the upper space. The electrolytic bath that has exited the partition opening 5 is an intermediate chamber 6.
, Where Cl 2 is completely released, and passes through the lower part of the second partition wall 18 together with Mg having a specific gravity close to the metal collection chamber 7. In the metal collection chamber 7, Mg is completely separated from the electrolytic bath and collects at the upper part of the bath, and the electrolytic bath 8 circulates through the partition lower opening 9 to the electrolytic chamber.
双極電極３の陰極面上部に、後壁19から隔壁口５の下
端に向ってきりかき部４の下面が1/15の加工する勾配を
有するようにきりかき部４を設けた双極電極３を備えた
電解槽〔第３図（ｂ）参照〕を用い、電解浴組成を重量
でMgCl2 20％、CaCl2 30％、NaCl 49％、MgF2 1％、槽
温度を660〜680℃、電流100KA、MgCl2供給は１日約７〜
８回、電解浴レベルの変動は約25cmの条件で運転した。
この結果双極電極３上部の電解浴流は常に隔壁口５方向
に向って安定し、電流効率は75％であった。The bipolar electrode 3 having the cutting portion 4 provided above the cathode surface of the bipolar electrode 3 so as to extend from the rear wall 19 to the lower end of the partition wall opening 5 so that the lower surface of the cutting portion 4 has a slope of 1/15. Using an electrolytic cell equipped [see FIG. 3 (b)], the composition of the electrolytic bath was 20% by weight of MgCl 2 , 30% of CaCl 2 , 49% of NaCl, 1% of MgF 2 , the cell temperature was 660 to 680 ° C. 100KA, MgCl 2 supply about 7 ~ per day
Eight times, the operation was performed under the condition that the fluctuation of the electrolytic bath level was about 25 cm.
As a result, the flow of the electrolytic bath above the bipolar electrode 3 was always stabilized in the direction of the partition opening 5, and the current efficiency was 75%.
これに対して、双極電極３の陰極面上部に設けたきり
かき部４の下面が、隔壁口５に向って下降する勾配を有
せず、したがって電解浴流路断面が一定の双極電極３を
備えた電解槽〔第３図（ｄ）参照〕を、前記と同じ条件
で運転した。その結果双極電極３上部の電解浴の流れは
不安定で、電流効率も68％止まりであった。On the other hand, the lower surface of the cutting portion 4 provided above the cathode surface of the bipolar electrode 3 does not have a gradient descending toward the partition wall opening 5, and therefore, the bipolar electrode 3 having a constant electrolytic bath flow path cross section is used. The provided electrolytic cell [see FIG. 3 (d)] was operated under the same conditions as described above. As a result, the flow of the electrolytic bath above the bipolar electrode 3 was unstable, and the current efficiency was only 68%.
本発明は以上説明したように構成されているから、電
解浴レベルが常に変動する状態で運転を継続した場合で
あっても電解浴流は常に安定しており、電解により生成
したMgとCl2を確実に分離収集できると共に、従来例に
比べ電流効率を７％も向上させるという著しい効果が達
成される。Since the present invention is constructed as described above, even when the electrolytic bath levels always continue to operate in a state of change and the electrolytic bath flows constantly stable, Mg and Cl 2 produced by electrolysis Can be reliably separated and collected, and a remarkable effect of improving the current efficiency by 7% as compared with the conventional example can be achieved.
第１図は本発明電解槽の縦断面図、第２図は本発明電解
槽の電極配置説明図、第３図（ａ）〜（ｄ）は本発明お
よび比較例の双極電極上部構造を示す斜視図、第４図
（ａ）〜（ｄ）は第３図の双極電極に運転中の電解浴レ
ベルを付加して、流路断面積の拡大状態を説明する斜視
図および第５図は従来電解槽の縦断面図である。 １……陽極、11……浴レベル調整器 ２……陰極、12,13……電解浴流路断面 ３……双極電極、14……上方開放溝 ４……きりかき部、15……垂直溝 ５……隔壁口、16……双極電極頂縁部 ６……中間室、17……第１隔壁 ７……メタル収集室、18……第２隔壁 ８……電解浴、19……後壁 ９……隔壁下部口 10……堰1 is a longitudinal sectional view of the electrolytic cell of the present invention, FIG. 2 is an explanatory view of the electrode arrangement of the electrolytic cell of the present invention, and FIGS. 3 (a) to 3 (d) show the bipolar electrode upper structure of the present invention and a comparative example. FIGS. 4 (a) to 4 (d) are perspective views for explaining an enlarged state of a cross-sectional area of a flow channel by adding an operating electrolytic bath level to the bipolar electrode of FIG. 3 and FIGS. It is a longitudinal cross-sectional view of an electrolytic cell. 1 ... Anode, 11 ... Bath level controller 2 ... Cathode, 12,13 ... Cross section of electrolytic bath channel 3 ... Dipolar electrode, 14 ... Top open groove 4 ... Cutting part, 15 ... Vertical Groove 5 Partition wall opening 16 Top electrode of bipolar electrode 6 Intermediate chamber 17 First partition 7 Metal collection chamber 18 Second partition 8 Electrolyte bath 19 Wall 9 ... Bottom of partition wall 10 ... Weir
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C25C 7/00 - 7/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) C25C 7/00-7/06
Claims (3)
成ガス収集室を設けた電解室と、生成金属収集室７と、
前記電解室と生成金属収集室７との間に、電解室側に設
けた第１の隔壁17と、生成金属収集室７側に設けた第２
の隔壁18により仕切られて形成された中間室６とよりな
る、上部に天井蓋を設けた金属ハロゲン化物よりなる電
解浴の電気分解を行なうための双極電解式密閉型金属製
造用電解槽であって、前記第１の隔壁17には、その上端
部に前記電解生成ガス収集室と前記中間室６上部の空間
との間で気体が移動できる通気口が設けられて天井蓋に
接続されており、またその下端部は前記電解室と前記生
成金属収集室７との間を電解浴が移動できるように開放
されているとともに前記第１の隔壁17には電解浴レベル
より下方位置に第１の隔壁を貫通する隔壁口５が設けら
れており、さらに前記第２の隔壁18は、その上端部が前
記天井蓋に密着して配置され、その下端部は、前記第１
の隔壁17に設けた隔壁口５より下方で、第１隔壁17の下
端部より上方の位置に配置されてなるとともに、陽極１
と陰極２との間に複数個の双極電極３を備え、これら双
極電極３の陰極面上部に、きりかき部４が電解浴中に埋
没するように設けてあり、前記きりかき部４によって形
成される電解浴流路は、前記第１隔壁17に設けられた隔
壁口５に向かって拡大された電解浴流路断面12及び13を
有することを特徴とする金属製造用電解槽。1. An electrolysis chamber having an anode 1 and a cathode 2, and an electrolysis product gas collection chamber provided above the electrolysis chamber, a generation metal collection chamber 7,
A first partition 17 provided on the electrolysis chamber side between the electrolysis chamber and the generated metal collection chamber 7 and a second partition 17 provided on the generated metal collection chamber 7 side
A bipolar electrolytic closed-cell type electrolytic cell for electrolyzing an electrolytic bath made of a metal halide and having a ceiling lid provided on the upper part, comprising an intermediate chamber 6 formed by partitioning the partition 18 with a partition wall 18. The first partition wall 17 is provided at its upper end with a vent through which gas can move between the electrolysis product gas collection chamber and the space above the intermediate chamber 6 and is connected to a ceiling lid. The lower end thereof is opened so that the electrolytic bath can move between the electrolytic chamber and the product metal collecting chamber 7, and the first partition wall 17 has a first lower position below the electrolytic bath level. A partition opening 5 penetrating the partition is provided. Further, the second partition 18 has an upper end disposed in close contact with the ceiling lid, and a lower end formed with the first partition.
The first partition 17 is disposed below the partition opening 5 provided in the partition 17 and above the lower end of the first partition 17.
A plurality of bipolar electrodes 3 are provided between the electrode 2 and the cathode 2, and a cutting portion 4 is provided above the cathode surface of the bipolar electrode 3 so as to be buried in the electrolytic bath. An electrolytic bath for metal production, characterized in that the electrolytic bath flow path to be provided has electrolytic bath flow path cross sections 12 and 13 which are enlarged toward the partition wall 5 provided in the first partition 17.
面は、後壁19から第１隔壁17に設けられた隔壁口５に向
かって1/5〜1/40の下降する勾配をなし、形成される電
解浴流路断面が、断面12から断面13に向かって拡大され
た請求項１記載の金属製造用電解槽。2. The lower surface of the cut-off portion 4 above the cathode surface of the bipolar electrode 3 has a gradient of 1/5 to 1/40 from the rear wall 19 toward the partition opening 5 provided in the first partition 17. The electrolytic bath for metal production according to claim 1, wherein the cross section of the formed electrolytic bath flow path is enlarged from the cross section 12 to the cross section 13.
面部において、双極電極３の厚さが、後壁19から第１隔
壁17に設けられた隔壁口５に向かって1/10〜1/50の勾配
をもって減少するようにして電解浴流路断面が、断面12
から断面13に向かって拡大された請求項１または２記載
の金属製造用電解槽。3. The thickness of the bipolar electrode 3 on the side surface of the cutout 4 above the cathode surface of the bipolar electrode 3 is 1/10 from the rear wall 19 to the partition opening 5 provided in the first partition 17. The cross section of the electrolytic bath flow path is reduced so that it decreases with a gradient of
The electrolytic cell for metal production according to claim 1, wherein the electrolytic cell is enlarged from the bottom toward the cross section 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7648089A JP2884348B2 (en) | 1989-03-30 | 1989-03-30 | Electrolyzer for metal production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7648089A JP2884348B2 (en) | 1989-03-30 | 1989-03-30 | Electrolyzer for metal production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02258993A JPH02258993A (en) | 1990-10-19 |
| JP2884348B2 true JP2884348B2 (en) | 1999-04-19 |
Family
ID=13606359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7648089A Expired - Lifetime JP2884348B2 (en) | 1989-03-30 | 1989-03-30 | Electrolyzer for metal production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2884348B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001322254A (en) | 2000-05-17 | 2001-11-20 | Komori Corp | Printing press and control method for the printing press |
| JP2001322250A (en) | 2000-05-17 | 2001-11-20 | Komori Corp | Printing press and control method for the printing press |
| JP6889640B2 (en) * | 2017-09-13 | 2021-06-18 | 東邦チタニウム株式会社 | Molten salt electrolytic cell |
| JP6933936B2 (en) * | 2017-09-13 | 2021-09-08 | 東邦チタニウム株式会社 | Molten salt electrolytic cell |
| JP6958398B2 (en) * | 2018-02-05 | 2021-11-02 | 住友金属鉱山株式会社 | Gutter connection structure and corrosion resistant tank |
| JP7076296B2 (en) * | 2018-06-19 | 2022-05-27 | 東邦チタニウム株式会社 | Method of manufacturing molten metal and molten salt electrolytic cell |
-
1989
- 1989-03-30 JP JP7648089A patent/JP2884348B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02258993A (en) | 1990-10-19 |
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