JPH02174065A - Zinc powder for alkaline battery - Google Patents

Zinc powder for alkaline battery

Info

Publication number
JPH02174065A
JPH02174065A JP31178388A JP31178388A JPH02174065A JP H02174065 A JPH02174065 A JP H02174065A JP 31178388 A JP31178388 A JP 31178388A JP 31178388 A JP31178388 A JP 31178388A JP H02174065 A JPH02174065 A JP H02174065A
Authority
JP
Japan
Prior art keywords
weight
bismuth
lead
mercury
powder
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.)
Pending
Application number
JP31178388A
Other languages
Japanese (ja)
Inventor
A J Strauben Yvan
イヴァン アー.ジェー.シュトラウヴェン
L Meusse Mansell
マンセル エル.メーウス
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
METALL HOBOKEN OVERPELT
Original Assignee
METALL HOBOKEN OVERPELT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by METALL HOBOKEN OVERPELT filed Critical METALL HOBOKEN OVERPELT
Priority to JP31178388A priority Critical patent/JPH02174065A/en
Publication of JPH02174065A publication Critical patent/JPH02174065A/en
Pending legal-status Critical Current

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Classifications

    • Y02E60/12

Landscapes

  • Powder Metallurgy (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

PURPOSE: To improve the resistance to corrosion in an alkaline medium, by adding specific amounts of mercury, bismuth and lead to the zinc powder. CONSTITUTION: The zinc powder includes mercury, bismuth and lead, the content of mercury is 0.05-3weight%, that of bismuth is 0.003-0.2weight%, and that of lead is 0.01-0.08weight%. To obtain the zinc powder, the molten zinc bath already including a part of minor component (full amount of lead and a part of mercury), is atomized and pulverized, and the remained minor component (full amount of bismuth and residual mercury) is introduced to the atomized and pulverized matter by the amalgamation or the amalgamation after cementation. Thereby the powder having high resistance to the corrosion in an alkaline medium, can be obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水銀、ビスマスおよび鉛を含有し亜鉛をベース
とするアルカリ電池用の粉末に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field] The present invention relates to a zinc-based alkaline battery powder containing mercury, bismuth and lead.

〔従来の技術〕[Conventional technology]

アルカリ電池用の粉末中に水銀、ビスマスおよび鉛が存
在すると、電池の電解質における前記粉末の腐食に対す
る耐性が高まる。
The presence of mercury, bismuth and lead in powders for alkaline batteries increases the resistance of the powders to corrosion in the battery electrolyte.

上記のような亜鉛をベースとする粉末は、特開昭59−
94371号公報に記載されている。
The above-mentioned zinc-based powder is
It is described in Publication No. 94371.

この公知粉末は、鉛0.05重量%、ビスマス0.01
重量%、カドミウム0.01重量%、錫0.01重量%
This known powder contains 0.05% by weight of lead and 0.01% by weight of bismuth.
Weight%, Cadmium 0.01% by weight, Tin 0.01% by weight
.

タリウム0.01重量%、インジウム0.02重量%。Thallium 0.01% by weight, indium 0.02% by weight.

水銀0.9重量%および残部が亜鉛からなる。It consists of 0.9% by weight of mercury and the balance zinc.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、この公知粉末は、両方とも非常に有毒な
元素であるカドミウムおよびタリウムを含有するという
欠点を有する。
However, this known powder has the disadvantage of containing cadmium and thallium, both of which are highly toxic elements.

本発明の目的は、このような公知粉末の欠点を避け、そ
してアルカリ媒体における腐食に対して優れた耐性を有
する粉末を提供することである。
The aim of the present invention is to avoid these drawbacks of known powders and to provide a powder that has excellent resistance to corrosion in alkaline media.

〔課題を解決するための手段〕[Means to solve the problem]

上記の目的を達成するために、本発明のアルカリ電池用
亜鉛粉末は、 水mO,05ナイL 3重量%、 ヒスマス0.003
ないし0.2重量%、鉛0.01ないし0.08重量%
および残部が亜鉛から実質的になることを特徴とする。
In order to achieve the above object, the zinc powder for alkaline batteries of the present invention contains 3% by weight of water mO.
0.2% to 0.2% by weight, 0.01% to 0.08% by weight of lead
and the remainder consisting essentially of zinc.

実際に、さらに証明されるであろうように、そのような
粉末は、公知粉末に比べより少ない腐食阻害元素を含有
するけれども、それにもかかわらず、アルカリ媒体にお
ける腐食に対して優れた耐性を有することが見出され、
腐食に対するその耐性は、例°えば公知粉末と同じ量の
水銀、鉛およびビスマスを含有する場合にこの公知粉末
と同程度に良好であることは、本当に驚くべきことであ
る。
Indeed, as will be further demonstrated, although such powders contain fewer corrosion-inhibiting elements than known powders, they nevertheless have excellent resistance to corrosion in alkaline media. It was discovered that
It is truly surprising that its resistance to corrosion is as good as the known powder, for example when it contains the same amounts of mercury, lead and bismuth.

本発明の粉末は、従って、少なくとも水銀を0.05重
量%、ビスマスを0.003重景置台よび鉛を0.01
重量%含有する。これらの含量は十分な腐食耐性を得る
ために必要とされる。水銀、ビスマスおよび鉛の最大含
量は、それぞれ3重量%、0.2重量%および0608
重量%であり、それ以上の含量は腐食に対して本質的な
改善を与えない。
The powder of the invention therefore contains at least 0.05% by weight of mercury, 0.003% bismuth and 0.01% lead.
Contains % by weight. These contents are required to obtain sufficient corrosion resistance. The maximum content of mercury, bismuth and lead is 3% by weight, 0.2% by weight and 0608 respectively
% by weight, higher contents do not provide substantial improvement against corrosion.

前に使用した「実質的になる」という表現は、全てが少
なくとも99.9%の純度である水銀、ビスマスおよび
鉛、およびSHG (特級(Special旧gh G
rade) )規格の亜鉛、並びにこれらの金属に不可
避に存在する不′4@物だけが粉末の成分であることを
意味する。
As used above, the term "substantially" refers to mercury, bismuth and lead, all of which are at least 99.9% pure, and SHG (special grade).
This means that the only constituents of the powder are the standard zinc and the impurities that are unavoidably present in these metals.

本発明の粉末は有利には、水銀を0.1ないし3重量%
、鉛を0.03ないし0.06重量%およびビスマスを
0.003ないし0.049重置%含有し、そして最も
好ましい水銀含量は1.3ないし1.7重量%に及び、
そしてビスマス含量は0.025ないし0.045重量
%に及・1で。
The powder of the invention advantageously contains 0.1 to 3% by weight of mercury.
, containing 0.03 to 0.06 weight percent lead and 0.003 to 0.049 weight percent bismuth, and the most preferred mercury content ranges from 1.3 to 1.7 weight percent;
And the bismuth content ranges from 0.025 to 0.045% by weight.

本発明の粉末は、以下の方法の一つに従って製造され得
る: ・全ての微量成分(Hg、Bi、Pb)を含有する溶融
亜鉛浴の噴霧粉末化: ・微量成分の一部(例えば;鉛の全量および水銀の一部
)を既に含有する溶融亜鉛浴の噴霧粉末化、そしてアマ
ルガム化(例えば; Hg−B1アマルガムを用いて)
またはセメンチージョンに続(アマルガム化(例えば;
噴霧粉末上でのビスマスのセメンチージョンおよびそれ
によって得られた粉末の水銀とのアマルガム化)のいず
れかによる噴霧粉末への残りの微量成分(例えば;ビス
マスの全量および残りの水銀)の導入; ・純粋な亜鉛の溶融浴の噴霧粉末化、そしてアマルガム
化またはセメンて−ジョンに続くアマルガム化のいずれ
かによる噴霧粉末への全ての微量成分の導入。
The powders of the invention may be produced according to one of the following methods: Spray powdering of a molten zinc bath containing all the minor components (Hg, Bi, Pb): Some of the minor components (e.g. lead atomization of a molten zinc bath already containing (all amounts of mercury and part of mercury) and amalgamation (e.g.; with Hg-B1 amalgam)
or following cementation (amalgamation, e.g.;
introduction of remaining minor components (e.g.; total amount of bismuth and remaining mercury) into the spray powder, either by cementation of bismuth on the spray powder and amalgamation of the resulting powder with mercury; - Spray powdering of the pure zinc molten bath and introduction of all minor constituents into the spray powder either by amalgamation or cementation followed by amalgamation.

〔実施例および発明の効果〕[Examples and effects of the invention]

1里班上 本実施例は、本発明に係る水銀、ビスマスおよび鉛を含
有し亜鉛をベースとするアルカリ電池用粉末に関するも
のである。
This example relates to a zinc-based alkaline battery powder containing mercury, bismuth and lead according to the present invention.

鉛0.05重量%およびビスマス0.045重量%含有
する溶融亜鉛浴を調製する。この溶融浴を撹拌により4
50’Cで均質にする。溶融合金を、圧縮空気の噴流中
に流入せしめ、それにより均質溶融浴の組成と同一の均
質組成(Zn−0,05Pb−0゜45Bi)を実質的
に有する粒子である合金粉末を製造する。
A molten zinc bath is prepared containing 0.05% by weight lead and 0.045% by weight bismuth. This molten bath was stirred to
Homogenize at 50'C. The molten alloy is passed into a jet of compressed air, thereby producing an alloy powder that is particles having substantially the same homogeneous composition as that of the homogeneous molten bath (Zn-0,05Pb-0°45Bi).

その合金粉末から500μtを越える両分およびできる
限り75μmより小さい両分を分離するために、この合
金粉末を篩にかける。このようにして、75ないし50
0 μmの粒子サイズの合金粉末が得られる。
The alloy powder is sieved in order to separate from it both the fraction exceeding 500 .mu.t and the fraction smaller than 75 .mu.m as far as possible. In this way, 75 to 50
An alloy powder with a particle size of 0 μm is obtained.

篩にかけた合金粉末を水iii、s重量%(亜鉛に対し
て)と室温で混合する。このようにして、亜鉛に対して
鉛0.05重量%、ビスマス0.045重量%および水
銀1.5重量%を含有する粉末を得る。
The sieved alloy powder is mixed at room temperature with iii,s wt% water (relative to zinc). In this way, a powder is obtained which contains 0.05% by weight of lead, 0.045% by weight of bismuth and 1.5% by weight of mercury relative to zinc.

この粉末のアルカリ媒体中での腐食に対する耐性を試験
する。この最終用途のために、KOH35重量%、Zn
02重量%および蒸留水63重量%からなる電解質を製
造する。前記粉末70gをこの電解質16011i中に
入れ、71°Cに保ち、そして該電解質から放出される
水素の量を14日間測定する。ガス化率は、粉末1gお
よび1日当たり30.1μlであることがわかった。
The resistance of this powder to corrosion in alkaline media is tested. For this end use, 35 wt% KOH, Zn
An electrolyte is prepared consisting of 2% by weight of 0.02% by weight and 63% by weight of distilled water. 70 g of the powder is placed in this electrolyte 16011i, kept at 71° C., and the amount of hydrogen released from the electrolyte is measured for 14 days. The gasification rate was found to be 30.1 μl per gram of powder and per day.

災立桝1 本実施例もまた、本発明に係る粉末に関するものである
Example 1 This example also relates to the powder according to the present invention.

実施例1と同様に操作するが、しかし、鉛0゜05重量
%およびビスマス0.045重量%含有する溶融浴を調
製する代わりに、鉛0.05重量%のみを含有する溶融
浴を調製し、篩にかけた合金粉末を1,5重量%の水銀
とアマルガム化する代わりに、ビスマス2.9重量%お
よび水1197.1重量%含有するアマルガム1.55
重量%とアマルガム化する。このようにして実施例1の
粉末と同様の組成および同様の粒子サイズを有する粉末
を得る。
Proceed as in Example 1, but instead of preparing a molten bath containing 0.05% by weight of lead and 0.045% by weight of bismuth, prepare a molten bath containing only 0.05% by weight of lead. , instead of amalgamating the sieved alloy powder with 1.5% by weight of mercury, amalgam 1.55 containing 2.9% by weight of bismuth and 1197.1% by weight of water
wt% and amalgamate. In this way a powder having a similar composition and a similar particle size to the powder of Example 1 is obtained.

32.3μIl/g/日のガス化率が得られた。A gasification rate of 32.3 μIl/g/day was obtained.

尖立■主 本実施例は、上記した従来技術に係るカドミウム、タリ
ウム、錫およびインジウム並びに水銀、ビスマスおよび
鉛を含有し亜鉛をベースとするアルカリ電池用粉末に関
するものである。
This example relates to a zinc-based alkaline battery powder containing cadmium, thallium, tin, and indium, as well as mercury, bismuth, and lead, according to the prior art described above.

実施例1と同様に操作するが、しかし、鉛0゜05重量
%およびビスマス0.045重量%含有する溶融浴を調
製する代わりに、鉛0.05置台%、ビスマス0.01
重量%、カドミウム0.01重量%、錫0.01重量%
、タリウム0.01重量%およびインジウム0.02重
量%を含有する溶融浴を調製し、篩にかけた合金粉末を
1.5重量%の水銀とアマルガム化する代わりに、0.
9重量%の水銀とアマルガム化する。最終的に、亜鉛に
対して、鉛0゜05重量%、ビスマス0.01重量%、
カドミウム0゜01重量%1錫0.01重量%、タリウ
ム0.01重量%。
Proceed as in Example 1, but instead of preparing a molten bath containing 0.05% lead and 0.045% bismuth by weight, 0.05% lead and 0.01% bismuth.
Weight%, Cadmium 0.01% by weight, Tin 0.01% by weight
, 0.01% by weight of thallium and 0.02% by weight of indium and instead of amalgamating the sieved alloy powder with 1.5% by weight of mercury.
Amalgamate with 9% by weight of mercury. Finally, 0.05% by weight of lead, 0.01% by weight of bismuth,
Cadmium 0°01% by weight 1 Tin 0.01% by weight, thallium 0.01% by weight.

インジウム0.02重量%および水銀0.9重量%を含
有する粉末を得る。
A powder containing 0.02% by weight of indium and 0.9% by weight of mercury is obtained.

48.0μl/g/日のガス化率が得られた。A gasification rate of 48.0 μl/g/day was obtained.

1去11( 本実施例は再び本発明に係る粉末に関するものである。1 left 11 ( This example again concerns the powder according to the invention.

実施例3と同様に操作するが、しかし、鉛0605重量
%、ビスマス0.01重量%、カドミウム0゜01重量
%、錫0.01重量%、タリウム0.01重量%および
インジウム0.02重量%を含有する溶融浴を調製する
代わりに、鉛0.05重量%およびビスマス0.01重
量%のみを含有する溶融浴を調製する。このようにして
、亜鉛に対して、鉛0.05重量%、ビスマス0.01
重量%および水銀0.9重量%を含有する粉末を得る。
Proceed as in Example 3, but with 0.605% by weight of lead, 0.01% by weight of bismuth, 0.01% by weight of cadmium, 0.01% by weight of tin, 0.01% by weight of thallium and 0.02% by weight of indium. %, instead of preparing a molten bath containing only 0.05% by weight lead and 0.01% by weight bismuth. In this way, with respect to zinc, 0.05% by weight of lead and 0.01% by weight of bismuth
A powder is obtained containing % by weight and 0.9% by weight of mercury.

48.6μ2/g/日のガス化率が得られた。これは、
実施例3で得られたものにまさに匹敵する。
A gasification rate of 48.6 μ2/g/day was obtained. this is,
Just comparable to that obtained in Example 3.

実去I生i 本実施例もまた本発明に係る粉末に関するものである。actual past life i This example also relates to the powder according to the present invention.

実施例4と同様に操作するが、しかし、鉛0゜05重量
%およびビスマス0.01重量%を含有する溶融浴を調
製する代わりに、鉛0.05重盪%およびビスマス0.
045重量%を含有する溶融浴を調製する。このように
して、亜鉛に対して、鉛0゜05重量%、ビスマス0.
045重量%および水!!0゜9重量%を含有する粉末
を得る。
Proceed as in Example 4, but instead of preparing a molten bath containing 0.05% by weight of lead and 0.01% by weight of bismuth, 0.05% by weight of lead and 0.05% by weight of bismuth.
A melt bath containing 0.045% by weight is prepared. In this way, 0.05% by weight of lead and 0.05% by weight of bismuth were added to the zinc.
045% by weight and water! ! A powder containing 0.9% by weight is obtained.

41.0μl/g/日のガス化率が得られた。A gasification rate of 41.0 μl/g/day was obtained.

Claims (6)

【特許請求の範囲】[Claims] (1)水銀0.05ないし3重量%、ビスマス0.00
3ないし0.2重量%、鉛0.01ないし0.08重量
%および残部が亜鉛から実質的になることを特徴とする
水銀、ビスマスおよび鉛を含有し亜鉛をベースとするア
ルカリ電池用粉末。
(1) Mercury 0.05 to 3% by weight, bismuth 0.00
A zinc-based alkaline battery powder containing mercury, bismuth and lead, characterized in that it consists essentially of 3 to 0.2% by weight of lead, 0.01 to 0.08% of lead and the balance zinc.
(2)水銀を0.1ないし3重量%含有することを特徴
とする請求項1記載の粉末。
(2) The powder according to claim 1, which contains 0.1 to 3% by weight of mercury.
(3)水銀を1.3ないし1.7重量%含有することを
特徴とする請求項2記載の粉末。
(3) The powder according to claim 2, characterized in that it contains 1.3 to 1.7% by weight of mercury.
(4)鉛を0.03ないし0.06重量%含有すること
を特徴とする請求項1、2または3記載の粉末。
(4) The powder according to claim 1, 2 or 3, characterized in that it contains 0.03 to 0.06% by weight of lead.
(5)ビスマスを0.003ないし0.049重量%含
有することを特徴とする請求項1ないし4のいずれか1
項に記載の粉末。
(5) Any one of claims 1 to 4, characterized in that it contains 0.003 to 0.049% by weight of bismuth.
Powder as described in Section.
(6)ビスマスを0.025ないし0.045重量%含
有することを特徴とする請求項5記載の粉末。
(6) The powder according to claim 5, containing 0.025 to 0.045% by weight of bismuth.
JP31178388A 1988-12-09 1988-12-09 Zinc powder for alkaline battery Pending JPH02174065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31178388A JPH02174065A (en) 1988-12-09 1988-12-09 Zinc powder for alkaline battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31178388A JPH02174065A (en) 1988-12-09 1988-12-09 Zinc powder for alkaline battery

Publications (1)

Publication Number Publication Date
JPH02174065A true JPH02174065A (en) 1990-07-05

Family

ID=18021420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31178388A Pending JPH02174065A (en) 1988-12-09 1988-12-09 Zinc powder for alkaline battery

Country Status (1)

Country Link
JP (1) JPH02174065A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61290655A (en) * 1985-06-19 1986-12-20 Mitsui Mining & Smelting Co Ltd Zinc alkaline battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61290655A (en) * 1985-06-19 1986-12-20 Mitsui Mining & Smelting Co Ltd Zinc alkaline battery

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