JPS6077127A - Elimination of lead in aqueous solution of rare earth element chloride - Google Patents
Elimination of lead in aqueous solution of rare earth element chlorideInfo
- Publication number
- JPS6077127A JPS6077127A JP58185729A JP18572983A JPS6077127A JP S6077127 A JPS6077127 A JP S6077127A JP 58185729 A JP58185729 A JP 58185729A JP 18572983 A JP18572983 A JP 18572983A JP S6077127 A JPS6077127 A JP S6077127A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- aqueous solution
- sulfide
- rare earth
- earth element
- 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
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は塩化希上水溶液中の鉛の除去方法に関するもの
である。鉛が溶存している水溶液に硫化水素や硫化アン
モニウム等の硫化物を混合して、鉛を硫化鉛さして析出
させることにより水溶液中の鉛を除去することは公知で
ある。しかし鉛が溶存している塩化積上水溶液にこの方
法を適用しても、鉛の除去率が変動しやすい欠点がある
。特に硫化物を混合してから析出した硫化鉛を分離する
までの時間が長いと、鉛の除去率が大きく低下する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing lead from a dilute aqueous solution of chloride. It is known that lead in an aqueous solution can be removed by mixing a sulfide such as hydrogen sulfide or ammonium sulfide into an aqueous solution in which lead is dissolved and precipitating the lead through the lead sulfide. However, even if this method is applied to a chloride stacked aqueous solution in which lead is dissolved, there is a drawback that the lead removal rate tends to fluctuate. In particular, if the time from mixing sulfides to separating precipitated lead sulfide is long, the lead removal rate will be greatly reduced.
本発明者らは塩化希上水溶液中に溶存している鉛を高い
除去率で安定して除去する方法について検討した結果、
塩化布上水浴液に硫化物に加えてヒドラジン、ヒドロキ
シルアミンまたはこれらの塩を混合することが有効なこ
とを見出し、本発明を完成した。The present inventors investigated a method for stably removing lead dissolved in a dilute aqueous solution of chloride at a high removal rate.
The present invention was completed based on the discovery that it is effective to mix hydrazine, hydroxylamine, or a salt thereof in addition to a sulfide in a chlorinated cloth bathing solution.
すなわち、本発明は鉛が溶存している塩化積上水溶液に
、該鉛と反応して硫化鉛を生成し得る硫化物並びにヒド
ラジン、ヒドロキシルアミンおよびこれらの塩から選ば
れた化合物を混合し、析出した硫化鉛を該水溶液から除
去することを特徴とする塩化希上水溶液中の鉛の除去方
法をその要旨とするものである。That is, the present invention mixes a chloride stacked aqueous solution in which lead is dissolved with a sulfide that can react with the lead to produce lead sulfide, as well as a compound selected from hydrazine, hydroxylamine, and their salts, and precipitates the solution. The gist of this invention is a method for removing lead from a dilute aqueous solution of chloride, which is characterized by removing lead sulfide from the aqueous solution.
本発明についてさらに詳ａｉ Ｋ ８に？、 ｕＡする
に、本発明において塩化布上とは原子番号が３７〜７１
の元素およびイツトリウム、トリウム、スカンジウムの
塩化物を指すものである。塩化積上水溶液は、塩化布上
を水に溶解することにより調製し得るが、通常は水酸化
布上を塩酸に溶解することにより調製される。本発明の
対象として最も一般的なのは、モナズ石等の積土鉱石を
水酸化ナトリウム等のアルカリで分解するか又は硫酸で
分解しプこのちアルカリで苛性化して得だ粗水酸化金子
を塩酸に溶解したもの２．ないしはこれから特定の元素
や不純物の一部を除去したものである。Want more information about this invention? , uA In the present invention, chlorinated cloth has an atomic number of 37 to 71.
This refers to the elements and chlorides of yttrium, thorium, and scandium. An aqueous chloride stack solution can be prepared by dissolving a chloride cloth in water, but is usually prepared by dissolving a hydroxide cloth in hydrochloric acid. The most common object of the present invention is to decompose earthen ore such as monazite with an alkali such as sodium hydroxide, or decompose it with sulfuric acid, and then causticize it with an alkali. Dissolved 2. Or it is something that has certain elements or impurities removed from it.
塩化希上水溶液に混合する硫化物として（ｄ１硫化水素
、硫化ナトリウム、硫化カリウム、硫化アンモニウム、
硫化水素ナトリウム、硫化希土々どの水溶性の硫化物が
用いられる。これらの（ｐｆ化物は、塩化希上水溶液中
の鉛に対し、硫ろ“【として等モル以上、好ましくはへ
Ｓ〜７０倍モルとなるように水溶液に混合される。混合
する（＋ｉｆＷ化物の幇が少なすぎると鉛の除去率が低
下する。硫化物の量が多すぎることは、鉛の除去に悪影
響はないが、特別の利点もない。As sulfides to be mixed with dilute aqueous chloride solution (d1 hydrogen sulfide, sodium sulfide, potassium sulfide, ammonium sulfide,
Water-soluble sulfides such as sodium hydrogen sulfide and rare earth sulfide are used. These pf oxides are mixed into the aqueous solution in an amount equal to or more than 70 times the mole of lead in the dilute aqueous solution of chloride as sulfur. Too little sulfide will reduce the lead removal rate. Too much sulfide will not have a negative effect on lead removal, but it will not provide any particular benefit.
Ｉ−ドラジン、ヒドロキシルアミンおよびこれらの塩と
しては、ヒドラジン、ヒドロキシルアミ／、硫酸ヒドラ
ジン、塩酸ヒドラジン、硝酸ヒドラジン、硫酸ヒドロキ
シルアミン、塩酸ヒドロキシルアミン、硝酸ヒドロキシ
ルーアミン宿が用いられる。これらの化合物は、２４１
１ｉ以」−をｆ７１’用しても差支えなく、その１史用
４１４はＪ益化右土水溶液中の鉛に対し通常０．５モル
倍以」−１好１し。As I-drazine, hydroxylamine, and salts thereof, hydrazine, hydroxylamine, hydrazine sulfate, hydrazine hydrochloride, hydrazine nitrate, hydroxylamine sulfate, hydroxylamine hydrochloride, and hydroxylamine nitrate are used. These compounds are 241
There is no problem in using f71', and 414 for 1 history is usually at least 0.5 mole times the lead in the aqueous solution of soil.
〈は７〜７０モル倍である。使用量が少なずぎると、鉛
の除去率を安定化させる効果が乏しく、逆に使用量が多
すぎても特別の第１］点はない。< is 7 to 70 times the mole. If the amount used is too small, the effect of stabilizing the lead removal rate will be poor, and if the amount used is too large, there will be no special point.
硫化物およびヒドラジン等の塩化希上水溶液への混合方
法および混合順序は任意である。；１４常は攪拌槽に塩
化金土水溶液を収容しておき、攪拌しながらこれに硫化
物およびヒドラジン等を同時にまたけ順次添加して槽内
に均一に分散させればよい。これにより水浴液中の鉛ｄ
硫化鉛となって析出するので、θ・過、遠ノシ・分π１
などの適宜の固液分離手段により析出物を除去する。The method and order of mixing the sulfide and hydrazine into the dilute aqueous chloride solution are arbitrary. 14 Usually, a chlorinated gold-earth aqueous solution is stored in a stirring tank, and sulfide, hydrazine, etc. are simultaneously added thereto and sequentially while stirring to uniformly disperse the solution in the tank. This results in lead d in the water bath liquid.
Since it precipitates as lead sulfide,
The precipitate is removed by an appropriate solid-liquid separation means such as.
本発明によれば、塩化希」二水浴液中の鉛を、常に安定
した除去率で除去することができる。、特に本発明によ
れば、硫化鉛が析出してからこれを除去する寸での時間
が長びいても、鉛の除去率が低下しないという利点があ
る。According to the present invention, lead in a dilute chloride bath solution can always be removed at a stable removal rate. In particular, according to the present invention, there is an advantage that the removal rate of lead does not decrease even if the time from the precipitation of lead sulfide to its removal is prolonged.
以下に実施例により本発明をさらに具体的に説明するが
、本発明はその要旨を超えない限シ以下の実施例に限定
されるものではない。The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to the following Examples as long as the gist thereof is not exceeded.
実施例
積土鉱石を分解して得た水酸化布上を塩酸に溶解して、
酸化物換算で７２％の席上を含むＰＨ３，３の塩化金土
水溶液（布上組成：セリウム約ＳＯ係、ランタン約ｊ５
％、その他約２５％）を調製した。この水溶液中には約
／ ｇ ０１：ｌＩ）ｍの鉛が溶存していた。この水溶
液１０００重量部に、硫化ナトリウムｏ、ｈ重量部（鉛
に対し７．９モル倍）および第１表に示す量のヒドラジ
ンまたは塩酸ヒドロキシルアばンを添加して攪拌した。Example A hydroxide cloth obtained by decomposing piled ore was dissolved in hydrochloric acid,
Chlorinated gold soil aqueous solution with pH 3.3 containing 72% oxide (composition on cloth: cerium approx. SO, lanthanum approx. J5
%, other approximately 25%). Approximately 1/g 01:lI)m of lead was dissolved in this aqueous solution. To 1000 parts by weight of this aqueous solution were added o and h parts by weight of sodium sulfide (7.9 mole times the amount of lead) and hydrazine or hydroxylban hydrochloride in the amount shown in Table 1, and the mixture was stirred.
所定時間経過後、Ｅ過して析出した硫化鉛を除去したＯ
Ｅ液液中鉛の含有稲を第１表に示す。After a predetermined period of time, the precipitated lead sulfide was removed by
Table 1 shows rice containing lead in liquid E.
秘 ／＆ ＊ 液中の鉛に対するモル比Secret /& * Molar ratio to lead in the liquid
Claims (1)
して硫化鉛を生成し得る硫化物並びにヒドラジン、ヒド
ロキシルアミンおよびこれらの塩から選ばれた化合物を
混合し、析出した硫化鉛を該水溶液から除去することを
特徴とする塩化希土水溶液中の鉛の除去方法。(1) A chloride deposition aqueous solution in which lead is dissolved is mixed with a sulfide that can react with the lead to produce lead sulfide, as well as a compound selected from hydrazine, hydroxylamine, and their salts, to precipitate sulfide. A method for removing lead in a rare earth chloride aqueous solution, which comprises removing lead from the aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58185729A JPS6077127A (en) | 1983-10-04 | 1983-10-04 | Elimination of lead in aqueous solution of rare earth element chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58185729A JPS6077127A (en) | 1983-10-04 | 1983-10-04 | Elimination of lead in aqueous solution of rare earth element chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6077127A true JPS6077127A (en) | 1985-05-01 |
Family
ID=16175832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58185729A Pending JPS6077127A (en) | 1983-10-04 | 1983-10-04 | Elimination of lead in aqueous solution of rare earth element chloride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238915A (en) * | 2018-11-27 | 2019-01-18 | 青岛泰玛新材料科技有限公司 | The measuring method of lead (II) ion content in electrolyte containing EDTA |
-
1983
- 1983-10-04 JP JP58185729A patent/JPS6077127A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238915A (en) * | 2018-11-27 | 2019-01-18 | 青岛泰玛新材料科技有限公司 | The measuring method of lead (II) ion content in electrolyte containing EDTA |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2008200360B2 (en) | Method for manufacturing scorodite | |
| CN104016398B (en) | A kind of method that dilute sulfuric acid utilized in industrial wastewater produces sulfate | |
| JPH06190376A (en) | Removing method for silver ion | |
| JPH05192665A (en) | Method for separating metal forming difficultly fusible sulfide from industrial waste water | |
| JPH11277075A (en) | Method for removing/fixing arsenic existing in iron sulfate solution | |
| US4362643A (en) | Aqueous basic polyaluminum-iron halide solutions | |
| USRE24324E (en) | Method of making stable cupric | |
| AU611465B2 (en) | Stripping and recovery of dichromate in electrolytic chromate systems | |
| SE440897B (en) | DISPERSION OF WATER PURIFICATION ENDAMAL CONTAINING IRON (II) + SULPHATE HEATHYDRATE | |
| JPS6077127A (en) | Elimination of lead in aqueous solution of rare earth element chloride | |
| SE436276B (en) | STABLE SOLUTION OF BASIC ALUMINUM SULFATE | |
| Bassett et al. | CCXVII.—A phase rule study of the cupro-, argento-, auro-and thallo-cyanides of potassium | |
| CN109970165B (en) | Heavy metal trapping agent and preparation method thereof | |
| FI115533B (en) | Process for removing metals from aqueous solutions by lime precipitation | |
| JPS6135894A (en) | Removal of arsenic in waste water | |
| US5563267A (en) | Method of making trialkali and triammonium salts of tmt | |
| Lovett | Removal of manganese from acid mine drainage | |
| JP4645826B2 (en) | Cerium ion-containing solution and corrosion inhibitor | |
| US2923618A (en) | Treatment of copper leach solutions | |
| JPH07241404A (en) | Iron based inorganic flocculant and its production | |
| JPS6065721A (en) | Purification of rare earth element | |
| JP4406751B2 (en) | Method for storing or transporting hydrogen peroxide-containing wastewater and processing method | |
| RU2234494C1 (en) | Method of production of cupric oxalate (ii) | |
| CN107151027A (en) | A kind of acid hydrolysis method of calcium arsenate and/or calcium arsenite | |
| JPS61117116A (en) | Purification of rare earth compound |