JP2001335326A - Method for manufacturing basic nickel carbonates - Google Patents
Method for manufacturing basic nickel carbonatesInfo
- Publication number
- JP2001335326A JP2001335326A JP2000157974A JP2000157974A JP2001335326A JP 2001335326 A JP2001335326 A JP 2001335326A JP 2000157974 A JP2000157974 A JP 2000157974A JP 2000157974 A JP2000157974 A JP 2000157974A JP 2001335326 A JP2001335326 A JP 2001335326A
- Authority
- JP
- Japan
- Prior art keywords
- carbonate
- nickel
- basic nickel
- solution
- bulk density
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、塩基性炭酸ニッケ
ルの製造方法に関し、特に嵩密度の高い塩基性炭酸ニッ
ケルの製造方法に関する。The present invention relates to a method for producing basic nickel carbonate, and more particularly to a method for producing basic nickel carbonate having a high bulk density.
【０００２】[0002]
【従来の技術】従来、ニッケルメッキ浴中のニッケルの
補充用として塩基性炭酸ニッケルが使用されてきた。そ
の塩基性炭酸ニッケルを製造するには、通常、反応槽中
で硫酸ニッケル溶液を炭酸ナトリウム等の炭酸アルカリ
で中和し、塩基性炭酸ニッケルを製造する方法がとられ
ていた。2. Description of the Related Art Basic nickel carbonate has been used for replenishing nickel in a nickel plating bath. In order to produce the basic nickel carbonate, a method has generally been employed in which a nickel sulfate solution is neutralized with an alkali carbonate such as sodium carbonate in a reaction vessel to produce a basic nickel carbonate.
【０００３】しかし、この製造方法の場合、非常に保水
量の多い嵩高い塩基性炭酸ニッケルが生成し、洗浄での
不純物、副産物の除去が困難であり、また、乾燥後は発
塵しやすい粉末であるという問題があった。However, in the case of this production method, a bulky basic nickel carbonate having a very large water retention capacity is generated, it is difficult to remove impurities and by-products by washing, and powder which tends to generate dust after drying is obtained. There was a problem that is.
【０００４】[0004]
【発明が解決しようとする課題】上記課題を解決するた
め、本発明は、ニッケルメッキを行う際のニッケル浴へ
のニッケル補充用としての用途に適した、嵩密度の高い
塩基性炭酸ニッケルの粉末を経済的に製造する方法を提
供することを課題とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a powder of basic nickel carbonate having a high bulk density, which is suitable for use as a replenisher for nickel in a nickel bath when performing nickel plating. It is an object of the present invention to provide a method for economically producing the same.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明は、ニッケル塩溶液と、中和剤としての炭酸
アルカリ溶液と、炭酸ガスとを同時にかつ定量的に反応
槽内に供給し、生成する塩基性炭酸ニッケルを連続的に
取り出すことを特徴とするタッピング嵩密度が０．５ｇ
／ミリリットルから１．５ｇ／ミリリットルである塩基
性炭酸ニッケルの製造方法である。In order to solve the above problems, the present invention provides a method for simultaneously and quantitatively supplying a nickel salt solution, an alkali carbonate solution as a neutralizing agent, and carbon dioxide gas into a reaction tank. The tapping bulk density is 0.5 g, characterized by continuously taking out the generated basic nickel carbonate.
This is a method for producing basic nickel carbonate at a concentration of 1.5 g / ml to 1.5 g / ml.
【０００６】前記方法において、ニッケル塩溶液は、硫
酸ニッケル、硝酸ニッケル、塩化ニッケルの内の少なく
とも１種の溶液であることが好ましく、中和剤として使
用する炭酸アルカリ溶液は、炭酸ナトリウム、炭酸アン
モニウム、炭酸カリウム、炭酸リチウムから選ばれる少
なくとも１種の水溶液であることが好ましい。In the above method, the nickel salt solution is preferably at least one of nickel sulfate, nickel nitrate and nickel chloride, and the alkali carbonate solution used as a neutralizing agent is sodium carbonate, ammonium carbonate. , Potassium carbonate, and lithium carbonate.
【０００７】また、前記中和剤として使用する炭酸アル
カリの供給量は、供給する塩化ニッケルの中和等量の1.
05倍から1.2倍とし、炭酸ガスの吹き込み量は、余剰に
供給した炭酸アルカリの炭酸量のモル比で３倍から８倍
が好ましい。The supply amount of the alkali carbonate used as the neutralizing agent is 1.
The blowing amount of carbon dioxide gas is preferably 3 to 8 times the molar ratio of the carbonic acid amount of the excess alkali carbonate supplied.
【０００８】上記塩基性炭酸ニッケルの製造方法におい
ては、反応系内の滞留時間を2時間以上、10時間以下と
することによって、高嵩密度の塩基性炭酸ニッケルが経
済的に製造できる。In the above method for producing basic nickel carbonate, by setting the residence time in the reaction system to 2 hours or more and 10 hours or less, high-density basic nickel carbonate can be economically produced.
【０００９】[0009]
【発明の実施の形態】本発明は、上記の課題を解決する
ために連続的に嵩密度の高い塩基性炭酸ニッケルを製造
することとした。これによりニッケルメッキに適した塩
基性炭酸ニッケル粉末を得るものである。以下に本発明
について詳細に説明する。DETAILED DESCRIPTION OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to continuously produce basic nickel carbonate having a high bulk density. Thus, a basic nickel carbonate powder suitable for nickel plating is obtained. Hereinafter, the present invention will be described in detail.
【００１０】上記のように、従来使用されている塩基性
炭酸ニッケルは、微粉状で嵩高い上、発塵性が高く、取
り扱い時の問題が多いものであった。これら従来の塩基
性炭酸ニッケルのタッピング嵩密度は、通常０．５ｇ／
ミリリットル以下であり、このタッピング嵩密度が０．
５ｇ／ミリリットル以上、好ましくは０．８ｇ／ミリリ
ットル以上あれば上記の問題を解決でき、製品としての
梱包時にも有利なものとなる。また、本発明の方法で得
られる塩基性炭酸ニッケルのタッピング密度の上限は、
１．５ｇ／ミリリットル程度であった。As described above, conventionally used basic nickel carbonate has a fine powdery and bulky shape, has a high dusting property, and has many problems in handling. The tapping bulk density of these conventional basic nickel carbonates is usually 0.5 g /
Milliliters or less and the tapping bulk density is
If it is 5 g / ml or more, preferably 0.8 g / ml or more, the above problem can be solved, and it is advantageous when packing as a product. Further, the upper limit of the tapping density of the basic nickel carbonate obtained by the method of the present invention,
It was about 1.5 g / milliliter.
【００１１】本発明に用いる中和剤としては炭酸アルカ
リである。炭酸アルカリの反応槽への供給は、供給した
ニッケルの中和等量の１．０５倍から１．２倍量を連続
的に供給することが望ましい。The neutralizing agent used in the present invention is an alkali carbonate. As for the supply of the alkali carbonate to the reaction tank, it is desirable to continuously supply 1.05 to 1.2 times the neutralization equivalent of the supplied nickel.
【００１２】炭酸アルカリの供給を１．０５倍以下とす
ると液中の炭酸イオンが減少し、液中に中和できないニ
ッケルが存在することとなり、未反応のニッケルが系外
に排出されることとなり収量が減少するほか、粒成長せ
ず嵩密度の低い塩基性炭酸ニッケルが生成する。また、
１．２倍以上とすると、反応に寄与しない過剰の炭酸ア
ルカリが、損失することとなるだけである。If the supply of alkali carbonate is set to 1.05 times or less, carbonate ions in the liquid will decrease, and nickel which cannot be neutralized will be present in the liquid, and unreacted nickel will be discharged out of the system. In addition to reducing the yield, basic nickel carbonate having a low bulk density without grain growth is produced. Also,
If the ratio is 1.2 times or more, excess alkali carbonate not contributing to the reaction will only be lost.
【００１３】本発明では、反応槽中に炭酸ガスを吹き込
むことを特徴とする。炭酸ガスの吹き込み量は、ニッケ
ル塩の中和当量より余剰に添加した炭酸アルカリの炭酸
量のモル比で３倍から８倍とすることが望ましい。The present invention is characterized in that carbon dioxide gas is blown into the reaction tank. The amount of carbon dioxide gas blown is desirably 3 to 8 times the molar ratio of the amount of carbonic acid of the alkali carbonate added in excess of the neutralization equivalent of the nickel salt.
【００１４】炭酸ガスの吹き込み量が不足すると、微細
な塩基性炭酸ニッケルが生成し、嵩密度が低くなり、次
工程での洗浄濾過が困難となる。また、炭酸ガス量が多
すぎると炭酸ガスの損失量が増大し、嵩密度の高い塩基
性炭酸ニッケルは生成するものの、液中へのニッケルの
溶出量も多くなり、ニッケルの損失が無視できなくな
る。また、同時に排水処理にも影響が出ることになりコ
ストがかさむので工業的には不利である。If the amount of carbon dioxide gas blown is insufficient, fine basic nickel carbonate is generated, the bulk density becomes low, and washing and filtering in the next step become difficult. Also, if the amount of carbon dioxide is too large, the loss of carbon dioxide increases, and although basic nickel carbonate having a high bulk density is generated, the amount of nickel eluted into the liquid also increases, and the loss of nickel cannot be ignored. . At the same time, wastewater treatment is affected and the cost increases, which is industrially disadvantageous.
【００１５】つぎに、本発明では、塩基性炭酸ニッケル
を製造する際の水素イオン濃度の制御等は不要である。
その理由として、吹き込んだ炭酸ガスが液中に溶解する
際、液中に存在している炭酸塩との緩衝作用によって槽
内の水素イオン濃度は一定に保持されるからである。ま
た、同時にニッケルも過剰炭酸イオン液中への溶解度を
持ち、溶解析出を繰り返しながら晶析し塩基性炭酸ニッ
ケルの粒子を成長させることができる。Next, in the present invention, there is no need to control the concentration of hydrogen ions when producing basic nickel carbonate.
The reason is that when the injected carbon dioxide gas dissolves in the liquid, the hydrogen ion concentration in the tank is kept constant by the buffering action with the carbonate present in the liquid. At the same time, nickel also has solubility in the excess carbonate ion solution, and can crystallize while repeating dissolution and precipitation to grow particles of basic nickel carbonate.
【００１６】本発明での反応系での塩基性炭酸ニッケル
の反応槽内の滞留時間は、製造する塩基性炭酸ニッケル
の粒径や嵩密度によって適宜選択すれば良いが、２時間
から１０時間とすることが望ましい。The residence time of the basic nickel carbonate in the reaction tank in the reaction system of the present invention may be appropriately selected depending on the particle size and bulk density of the basic nickel carbonate to be produced. It is desirable to do.
【００１７】反応系内の滞留時間を２時間以下とする
と、塩基性炭酸ニッケルの粒子が成長する段階で排出さ
れ、嵩密度の高い塩基性炭酸ニッケルが得られないだけ
でなく、ニッケルの収量も減少する。また、嵩密度が低
いと生成した塩基性炭酸ニッケルの洗浄、濾過、乾燥時
に、液中に微細に懸濁し損失となったり、梱包や取り扱
い時に空気中に舞って粉塵となり作業環境を悪くすると
いう問題もある。If the residence time in the reaction system is set to 2 hours or less, the particles of basic nickel carbonate are discharged at the stage of growth, and not only basic nickel carbonate having a high bulk density cannot be obtained, but also the yield of nickel is reduced. Decrease. In addition, if the bulk density is low, the generated basic nickel carbonate is finely suspended in the liquid during washing, filtration and drying, resulting in loss, or dusting in the air at the time of packing and handling, which worsens the working environment. There are also problems.
【００１８】反対に１０時間以上の滞留時間を確保して
も、粒子が成長する段階で崩壊するものが出ることや生
産性の低下等を考えると経済的な方法とは言えない。On the other hand, even if a residence time of 10 hours or more is secured, it cannot be said that this method is economical in view of the fact that some of the particles may collapse at the stage of growth or a decrease in productivity.
【００１９】[0019]
【実施例】（実施例１）塩化ニッケル濃度：２２０ｇ／
リットルの塩化ニッケル水溶液と、炭酸ナトリウム濃
度：２００ｇ／リットルの炭酸ナトリウム水溶液を調整
した。EXAMPLES (Example 1) Nickel chloride concentration: 220 g /
A liter of nickel chloride aqueous solution and a sodium carbonate concentration of 200 g / liter sodium carbonate aqueous solution were prepared.
【００２０】次に、塩化ナトリウム水溶液を満たした内
容積１１リットルの反応容器内を攪拌機で毎分２００回
転で撹拌しながら、塩化ニッケル水溶液と炭酸ナトリウ
ム水溶液をそれぞれ、１８．５ミリリットル／分（滞留
時間５時間）の流量で供給し、さらに、炭酸ガスを０．
５リットル／分の流量で吹き込み連続的に塩基性炭酸ニ
ッケルを生成させた。オーバーフローにより炭酸ニッケ
ル懸濁液を取り出し、ろ過後、さらに、純水で洗浄し、
塩基性炭酸ニッケルを得た。この時の炭酸アルカリの添
加量は、理論当量量の１．１倍、炭酸ガスの吹き込み量
は理論量の７．５倍であった。Next, the nickel chloride aqueous solution and the sodium carbonate aqueous solution were each mixed at 18.5 ml / min (retention time) while stirring the inside of the reaction vessel having an inner volume of 11 liter filled with the aqueous sodium chloride solution with a stirrer at 200 rpm. (Time 5 hours), and further, carbon dioxide gas was added at 0.1 times.
Basic nickel carbonate was continuously produced by blowing at a flow rate of 5 liter / min. Take out the nickel carbonate suspension by overflow, after filtration, further washed with pure water,
Basic nickel carbonate was obtained. At this time, the added amount of the alkali carbonate was 1.1 times the theoretical equivalent, and the blowing amount of the carbon dioxide gas was 7.5 times the theoretical amount.
【００２１】生成した炭酸ニッケル１０ｇを２０ミリリ
ットルのメスシリンダーに入れ５００回シリンダーをタ
ッピングすると１１．１ミリリットルとなった。このこ
とからタッピング嵩密度は０．９ｇ／ミリリットルであ
った。得られた粉末は流動性があり、取り扱いやすいも
のであった。また、得られた塩基性炭酸ニッケルを塩化
物系電解メッキ液に添加すると容易に溶解した。10 g of the produced nickel carbonate was placed in a 20 ml measuring cylinder, and the cylinder was tapped 500 times to obtain 11.1 ml. From this, the tapping bulk density was 0.9 g / ml. The obtained powder had fluidity and was easy to handle. Further, when the obtained basic nickel carbonate was added to the chloride-based electrolytic plating solution, it was easily dissolved.
【００２２】生成した塩基性炭酸ニッケルを分析したと
ころ、硫黄は検出されず、また、塩素は、０．０１％以
下であった。When the basic nickel carbonate formed was analyzed, no sulfur was detected and the content of chlorine was 0.01% or less.
【００２３】（実施例２）反応容器の容積を１．６リッ
トル、それぞれの液供給量を３ミリリットル／分、炭酸
ガス吹き込み量は８０ミリリットル／分とした以外は、
実施例1と同様な方法で炭酸ニッケルを製造した。この
時の炭酸アルカリの添加量は、理論当量量の１．１倍、
炭酸ガスの吹き込み量は理論量の７．５倍であった。(Example 2) [0023] Except that the volume of the reaction vessel was 1.6 liters, the supply amount of each liquid was 3 ml / min, and the blowing amount of carbon dioxide gas was 80 ml / min.
Nickel carbonate was produced in the same manner as in Example 1. At this time, the addition amount of the alkali carbonate is 1.1 times the theoretical equivalent,
The blowing amount of carbon dioxide gas was 7.5 times the theoretical amount.
【００２４】生成した塩基性炭酸ニッケルを実施例１と
同様にタッピングしたところ、１０．５ミリリットルと
なった。このことからタッピング嵩密度は０．９５ｇ／
ミリリットルであった。得られた粉末は流動性があり、
取り扱いやすいものであった。また、塩化物系電解メッ
キ液に添加すると容易に溶解した。The produced basic nickel carbonate was tapped in the same manner as in Example 1 to obtain 10.5 ml. From this, the tapping bulk density was 0.95 g /
Milliliters. The resulting powder is fluid,
It was easy to handle. Also, when added to the chloride-based electrolytic plating solution, it was easily dissolved.
【００２５】生成した塩基性炭酸ニッケルを分析したと
ころ、硫黄は、検出されず、また、塩素は、０．０１％
以下であった。When the basic nickel carbonate formed was analyzed, no sulfur was detected and chlorine was 0.01%.
It was below.
【００２６】（実施例３）ニッケル塩溶液として、硫酸
ニッケル濃度：２６０ｇ／リットルの硫酸ニッケル水溶
液とした以外は、実施例1と同様な条件で炭酸ニッケル
を製造した。Example 3 Nickel carbonate was produced under the same conditions as in Example 1 except that the nickel salt solution was an aqueous solution of nickel sulfate having a nickel sulfate concentration of 260 g / liter.
【００２７】生成した塩基性炭酸ニッケルを実施例１と
同様にタッピングしたところ、１１．６ミリリットルと
なった。このことからタッピング嵩密度は０．８６ｇ／
ミリリットルであった。粉末は流動性があり、取り扱い
やすいものであった。塩化物系電解メッキ液に添加する
と容易に溶解した。生成した塩基性炭酸ニッケルを分析
したところ、硫黄分が０．２％検出された。The resulting basic nickel carbonate was tapped in the same manner as in Example 1 to obtain 11.6 ml. From this, the tapping bulk density was 0.86 g /
Milliliters. The powder was fluid and easy to handle. When added to the chloride-based electrolytic plating solution, it dissolved easily. When the generated basic nickel carbonate was analyzed, a sulfur content of 0.2% was detected.
【００２８】（比較例１）炭酸ガスを吹き込まなかった
以外は、実施例1と同様な条件で炭酸ニッケルを製造し
た。生成した炭酸ニッケルは非常に嵩高く、洗浄、濾過
時に多量の水分を保持し、濾液が中性となるまでに多量
の水と時間がかかった。この炭酸ニッケル５ｇを２０ミ
リリットルのメスシリンダーに入れこぼれないように蓋
をした後５００回シリンダーをタッピングすると１１．
４ミリリットルとなった。このことからタッピング嵩密
度は０．４４ｇ／ミリリットルであった。Comparative Example 1 Nickel carbonate was produced under the same conditions as in Example 1 except that no carbon dioxide gas was blown. The produced nickel carbonate was very bulky, retained a large amount of water during washing and filtration, and required a large amount of water and time until the filtrate became neutral. When 5 g of this nickel carbonate was put into a 20 ml graduated cylinder and covered so as not to be spilled, the cylinder was tapped 500 times.
It became 4 ml. From this, the tapping bulk density was 0.44 g / ml.
【００２９】粉末は非常に多くの粉塵を発生し、取り扱
い難いものであった。また、塩化物系電解メッキ液に添
加すると容易に溶解した。The powder generated a great deal of dust and was difficult to handle. Also, when added to the chloride-based electrolytic plating solution, it was easily dissolved.
【００３０】生成した塩基性炭酸ニッケルを分析したと
ころ、硫黄は検出されなかった。また、塩素は、０．１
５％であった。When the formed basic nickel carbonate was analyzed, no sulfur was detected. In addition, chlorine is 0.1
5%.
【００３１】（比較例２）炭酸ガスを吹き込む代わり
に、pHを制御し、pH値が、７．８９を目標とし、誤差範
囲０．０２の範囲で中和する他は、実施例３と同様な条
件で炭酸ニッケルの製造を試みたところ、製造は困難を
極めた。この製造方法においては、ｐＨの制御値が振
れ、誤差範囲が中性側に振れると微粉末が生成した。ま
たｐＨが、アルカリ性になると粒径は大きくなるものの
嵩密度の低いものが生成した。槽内のｐＨ値、撹拌等を
最適化することによって、目的とする特性の粉末を得た
が、製造は非常に困難であった。(Comparative Example 2) The same as Example 3 except that instead of blowing in carbon dioxide gas, the pH was controlled, the pH value was targeted at 7.89, and neutralization was performed within an error range of 0.02. The production of nickel carbonate was attempted under difficult conditions, but the production was extremely difficult. In this production method, when the control value of the pH fluctuated and the error range fluctuated toward the neutral side, fine powder was generated. When the pH became alkaline, particles having a large bulk but a low bulk density were formed. By optimizing the pH value, stirring, and the like in the tank, a powder having desired characteristics was obtained, but the production was very difficult.
【００３２】生成した塩基性炭酸ニッケル１０ｇを２０
ミリリットルのメスシリンダーに入れ５００回シリンダ
ーをタッピングすると１１．６ミリリットルとなった。
このことからタッピング嵩密度は０．９３ｇ／ミリリッ
トルであった。粉末は流動性があり、取り扱いやすいも
のであった。塩化物系電解メッキ液に添加すると容易に
溶解した。得られた塩基性炭酸ニッケルを分析してみた
ところ、硫黄分が０．３％検出された。10 g of the produced basic nickel carbonate was added to 20
Tapping the cylinder 500 times in a milliliter graduated cylinder yielded 11.6 milliliters.
From this, the tapping bulk density was 0.93 g / ml. The powder was fluid and easy to handle. When added to the chloride-based electrolytic plating solution, it dissolved easily. When the obtained basic nickel carbonate was analyzed, 0.3% of sulfur was detected.
【００３３】また、反応が不安定な時に生成した塩基性
炭酸ニッケルについては中性側で生成した塩基性炭酸ニ
ッケルは、比較例１のものと類似した微粉状で嵩高く、
タップ密度の低い粉末であった。また、アルカリ性で生
成した粉末は非常に嵩密度が低く、発塵し易い粉末であ
った。As to the basic nickel carbonate produced when the reaction was unstable, the basic nickel carbonate produced on the neutral side was fine and bulky similar to that of Comparative Example 1,
The powder had a low tap density. In addition, the powder produced under alkaline conditions had a very low bulk density and was a powder that easily generated dust.
【００３４】[0034]
【発明の効果】本発明の方法により、ニッケルメッキを
行う際のニッケル浴へのニッケル補充用としての用途に
適した、嵩密度の高い塩基性炭酸ニッケルの粉末を経済
的に製造できる。According to the method of the present invention, a powder of basic nickel carbonate having a high bulk density and suitable for use as a replenisher for nickel in a nickel bath at the time of nickel plating can be economically produced.
Claims (6)
酸ガスとを同時にかつ定量的に反応槽に供給し、生成す
る塩基性炭酸ニッケルを連続的に取り出すことを特徴と
するタッピング嵩密度が０．５ｇ／ミリリットルから
１．５ｇ／ミリリットルである塩基性炭酸ニッケルの製
造方法。1. A tapping bulk density of 0.1, characterized by simultaneously and quantitatively supplying a nickel salt solution, an alkali carbonate solution, and carbon dioxide gas to a reaction vessel and continuously taking out basic nickel carbonate produced. A method for producing basic nickel carbonate having a content of 5 g / milliliter to 1.5 g / milliliter.
ニッケル、塩化ニッケルの内の少なくとも１種の溶液で
ある請求項１に記載の塩基性炭酸ニッケルの製造方法。2. The method for producing basic nickel carbonate according to claim 1, wherein the nickel salt solution is at least one kind of solution among nickel sulfate, nickel nitrate and nickel chloride.
が、炭酸ナトリウム、炭酸アンモニウム、炭酸カリウ
ム、炭酸リチウムから選ばれる少なくとも１種の水溶液
であることを特徴とする請求項１または２に記載の塩基
性炭酸ニッケルの製造方法。3. The method according to claim 1, wherein the alkali carbonate solution used as the neutralizing agent is at least one aqueous solution selected from sodium carbonate, ammonium carbonate, potassium carbonate, and lithium carbonate. A method for producing basic nickel carbonate.
給量を供給するニッケル塩溶液の中和等量の１．０５倍
から１．２倍とする請求項３記載の塩基性炭酸ニッケル
の製造方法。4. The production of basic nickel carbonate according to claim 3, wherein the supply amount of the alkali carbonate used as the neutralizing agent is 1.05 to 1.2 times the neutralization equivalent of the nickel salt solution supplied. Method.
炭酸アルカリの炭酸量のモル比で３倍から８倍とする請
求項１から４のいずれかに記載の塩基性炭酸ニッケルの
製造方法。5. The method for producing basic nickel carbonate according to claim 1, wherein the amount of carbon dioxide blown is 3 to 8 times the molar ratio of the amount of carbonic acid of the excess alkali carbonate supplied.
間以下とする請求項１から５のいずれかに記載の塩基性
炭酸ニッケルの製造方法。6. The method for producing basic nickel carbonate according to claim 1, wherein the residence time in the reaction vessel is 2 hours or more and 10 hours or less.
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|---|---|---|---|
| JP2000157974A JP2001335326A (en) | 2000-05-24 | 2000-05-24 | Method for manufacturing basic nickel carbonates |
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|---|---|---|---|
| JP2000157974A JP2001335326A (en) | 2000-05-24 | 2000-05-24 | Method for manufacturing basic nickel carbonates |
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|---|---|
| JP2001335326A true JP2001335326A (en) | 2001-12-04 |
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