JPS62274032A - Removing method of mercury from mercury-containing selenium solution - Google Patents
Removing method of mercury from mercury-containing selenium solutionInfo
- Publication number
- JPS62274032A JPS62274032A JP61117941A JP11794186A JPS62274032A JP S62274032 A JPS62274032 A JP S62274032A JP 61117941 A JP61117941 A JP 61117941A JP 11794186 A JP11794186 A JP 11794186A JP S62274032 A JPS62274032 A JP S62274032A
- Authority
- JP
- Japan
- Prior art keywords
- mercury
- selenium
- activated carbon
- soln
- solution
- 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
- 239000011669 selenium Substances 0.000 title claims abstract description 91
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 85
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 74
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 abstract description 12
- 239000004744 fabric Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229940091258 selenium supplement Drugs 0.000 description 77
- 239000000243 solution Substances 0.000 description 71
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 238000001914 filtration Methods 0.000 description 14
- 229940082569 selenite Drugs 0.000 description 9
- MCAHWIHFGHIESP-UHFFFAOYSA-L selenite(2-) Chemical compound [O-][Se]([O-])=O MCAHWIHFGHIESP-UHFFFAOYSA-L 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 9
- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000007670 refining Methods 0.000 description 7
- 229960001471 sodium selenite Drugs 0.000 description 7
- 235000015921 sodium selenite Nutrition 0.000 description 7
- 239000011781 sodium selenite Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000003342 selenium Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IWHXNINOLLNFGP-ZAGWXBKKSA-N Cl.CCOc1ccc(cc1)\N=N\c1ccc(N)cc1N Chemical compound Cl.CCOc1ccc(cc1)\N=N\c1ccc(N)cc1N IWHXNINOLLNFGP-ZAGWXBKKSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002730 mercury Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- SPVXKVOXSXTJOY-UHFFFAOYSA-N selane Chemical compound [SeH2] SPVXKVOXSXTJOY-UHFFFAOYSA-N 0.000 description 1
- 229910000058 selane Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
「産業上の利用分野」
この発明は、例えば銅電解スライムやセレン含有スクラ
ップなどからセレンを精製する際に生じるセレン溶液か
ら水銀を除去する方法に関ずろらのである。[Detailed Description of the Invention] 3. Detailed Description of the Invention "Field of Industrial Application" This invention provides a method for removing mercury from a selenium solution produced when refining selenium from copper electrolytic slime, selenium-containing scrap, etc. This is from Zurorano.
「従来の技術」
一般に、銅電解スライムやせレン含有スクラップなどに
含まれているセレンを精製するには、次のような方法が
用いられている。"Prior Art" Generally, the following method is used to purify selenium contained in copper electrolytic slime, selenium-containing scrap, etc.
十ず 面デげセレ゛ノ本今ｔｉｔロ旧木唄届と１．−電
解槽を陰極として銅の電解精製を行なってセレンを電解
槽の底部に沈澱させ、このセレン沈澱物を水洗、乾燥し
た後、７００〜７５０°Ｃ程度で焙焼することによって
二酸化セレン（ガス）を発生させる。この二酸化セレン
（ガス）を１００〜１８０°Ｃ程度の温度で固化させる
ことによって、固体の二酸化セレンを得、これをさらに
水または苛性ソーダ中に溶解させて亜セレン酸溶液また
は亜セレン酸ソーダ液を得る。しかし、これら亜セレン
酸溶液または亜セレン酸ソーダ液には、また不純物とし
て水銀が微量含まれているため、セレンの純度を高める
には、この微量の水銀を除去する必要があった。Juzu Mendege Serenohon now titro Kyuuta notification and 1. - Perform electrolytic refining of copper using the electrolytic tank as a cathode to precipitate selenium at the bottom of the electrolytic tank, wash this selenium precipitate with water, dry it, and then roast it at about 700 to 750°C to produce selenium dioxide (gas ) occurs. By solidifying this selenium dioxide (gas) at a temperature of about 100 to 180°C, solid selenium dioxide is obtained, which is further dissolved in water or caustic soda to form a selenite solution or a selenite sodium solution. obtain. However, these selenite solutions or sodium selenite solutions also contain a trace amount of mercury as an impurity, so in order to increase the purity of selenium, it was necessary to remove this trace amount of mercury.
従来、このようなセレン溶液から水銀だけを選択的に除
去する方法としては、例えば次のような方法が用いられ
ている。Conventionally, as a method for selectively removing only mercury from such a selenium solution, for example, the following method has been used.
■すなわち、亜セレン酸溶液または亜セレン酸ソーダ液
中に鉄粉などの鉄くずを投入し、水銀よりイオン化傾向
の大きい鉄を電離させ、その替わりに水銀を還元して沈
澱させて分離除去する、いわゆる鉄粉置換法である。■In other words, iron scraps such as iron powder are put into a selenite solution or a sodium selenite solution to ionize iron, which has a greater tendency to ionize than mercury, and instead reduce mercury, precipitate it, and separate and remove it. This is the so-called iron powder replacement method.
■また、他の水銀除去方法としては、上記の亜セレン酸
溶液または亜セレン酸ソーダ液中のセレンを二酸化イオ
ウなどの還元剤で還元し、この還元セレンによって溶液
中の水銀を選択的に吸着して分離除去する方法である。■Another method for removing mercury is to reduce the selenium in the selenite solution or sodium selenite solution with a reducing agent such as sulfur dioxide, and selectively adsorb mercury in the solution. This method separates and removes it.
「発明が解決しようとする問題点」
ところが、これらの水銀除去方法にあっては、次のよう
な問題点があった。"Problems to be Solved by the Invention" However, these mercury removal methods have the following problems.
すなわち、■の鉄粉置換法にあっては、セレン溶液中に
おいて水銀の替わりに電離した鉄を除去する工程が増え
ることとなり、手間がかかって面倒であるなどの問題が
あった。また、この方法では、Ｈｔ Ｓ ｅｓ Ｈｔ
Ｆ ｅなどの有毒ガスが発生する恐れがあり、安全性に
も問題があった。That is, the iron powder replacement method (2) requires an additional step of removing ionized iron instead of mercury in the selenium solution, which is time-consuming and troublesome. Also, in this method, Ht S es Ht
There was a risk of toxic gases such as Fe being generated, and there was also a safety problem.
また、■の還元セレンによる水銀除去法にあっては、還
元セレンによって直接水銀を吸着するため、水銀の吸着
に使われるセレンが無駄になってしまい、セレンの精製
量が減少し、よって精製コストが増大する問題があった
。さらに、この方法では、還元セレンに吸着された水銀
をセレン溶液から濾別する際に濾布などの上に還元セレ
ンおよび水銀からなる沈澱物がへばり付いて濾過性が悪
化し、このため濾過時間が長くなるなど作業性にも問題
があった。In addition, in the mercury removal method using reduced selenium in (2), since mercury is directly adsorbed by reduced selenium, the selenium used for adsorbing mercury is wasted, reducing the amount of purified selenium and reducing the refining cost. There was a problem of increasing Furthermore, in this method, when mercury adsorbed on reduced selenium is filtered from a selenium solution, precipitates consisting of reduced selenium and mercury stick to the filter cloth, etc., resulting in poor filtration. There were also problems with workability, such as the length of time required.
「問題点を解決するための手段」
そこで、この発明は、水銀含有セレン溶液と活性炭とを
固液接触させ、活性炭に選択的に水銀を吸着させろこと
によって、上記せレン溶液から水銀を除去するようにし
たことにより、上記の問題点を解消するようにした。"Means for Solving the Problem" Therefore, the present invention removes mercury from the selenium solution by bringing the mercury-containing selenium solution into solid-liquid contact with activated carbon and allowing the activated carbon to selectively adsorb mercury. By doing this, the above problem was solved.
「作用」
この発明の水銀含有セレン溶液からの水銀除去方法にあ
っては、セレン溶液中の水銀が活性炭により選択的に吸
着され、セレン溶液から水銀が除去される。"Operation" In the method for removing mercury from a mercury-containing selenium solution of the present invention, mercury in the selenium solution is selectively adsorbed by activated carbon, and mercury is removed from the selenium solution.
「実施例」 以下、この発明を図面を参照して詳しく説明する。"Example" Hereinafter, the present invention will be explained in detail with reference to the drawings.
図面は、この発明の水銀含有セレン溶液の水銀除去方法
を実施する上で好適に用いられる装置を示すものであっ
て、図中符号ｌは、水銀除去装置である。この水銀除去
装置１は、概略、混合槽２と濾別装置３とからなるもの
である。The drawing shows an apparatus suitably used to carry out the method for removing mercury from a mercury-containing selenium solution according to the present invention, and reference numeral 1 in the drawing indicates the mercury removal apparatus. This mercury removal device 1 roughly consists of a mixing tank 2 and a filtration device 3.
上記の混合槽２は、セレン溶液と活性炭とを混合し、活
性炭にセレン溶液中の水銀を吸着させるための装置であ
って、このものは、攪拌器４が設けられてなるものであ
る。この混合槽２には、セレン溶液イを収容するタンク
４と、活性炭口を収容するタンク５とがそれぞれバイブ
ロ、７を介して配設されている。The mixing tank 2 described above is a device for mixing a selenium solution and activated carbon so that the activated carbon adsorbs mercury in the selenium solution, and is equipped with a stirrer 4. In this mixing tank 2, a tank 4 for containing a selenium solution A and a tank 5 for containing an activated carbon port are arranged via vibrators 7, respectively.
また、この混合槽２には、セレン溶液イと活性炭口とか
らなる混合液ハから活性炭口′を濾別する濾別装置３が
パイプ８を介して設けられている。Further, this mixing tank 2 is provided with a filtration device 3 via a pipe 8 for filtering out the activated carbon port ' from the mixed liquid C consisting of the selenium solution A and the activated carbon port.
濾別装置３は、活性炭口′などの固形分を通過させない
濾布９ａを有するロート９と、ロート９の濾布９ａを通
過したセレン溶液イを収容する受器１０とからなるもの
である。The filtration device 3 consists of a funnel 9 having a filter cloth 9a that does not allow solid matter to pass through, such as an activated carbon port, and a receiver 10 that accommodates the selenium solution that has passed through the filter cloth 9a of the funnel 9.
次に、上記の構成からなる水銀除去装置ｌを用いてセレ
ン溶液イ中から水銀を除去する方法を説明する。まず、
混合槽２内にタンク４からセレン溶液イを所定量供給す
る。ここで、セレン溶液イとしては、銅電解スライムや
セレン含有スクラップなどを電解精製する工程で得られ
る亜セレン酸溶液または亜セレン酸ソーダ液などが用い
られる。Next, a method for removing mercury from a selenium solution I using the mercury removal apparatus I having the above configuration will be described. first,
A predetermined amount of selenium solution A is supplied from the tank 4 into the mixing tank 2. Here, as the selenium solution A, a selenite solution or a sodium selenite solution obtained in the process of electrolytically refining copper electrolytic slime, selenium-containing scrap, etc. is used.
そして、セレン溶液イ中のセレン１度は、上記銅電解ス
ライムやセレン含有スクラップ中のセレン含有量などに
より左右され、１００〜２００９／Ｑ程度の範囲である
ことが望ましいが、これに限定されるものではない。ま
た、このセレン溶液イ中の水銀含有量は、セレン溶液イ
の出発威料である銅電解スライムやスクラップなどに含
有される水銀量や、その後の精製工程などにより異なる
が、通常１〜１１０ｌｌ１／Ｑ程度含有されている。The degree of selenium in the selenium solution A depends on the selenium content in the copper electrolytic slime and selenium-containing scrap, and is preferably in the range of about 100 to 2009/Q, but is limited to this range. It's not a thing. The mercury content in this selenium solution A varies depending on the amount of mercury contained in the copper electrolytic slime or scrap that is the starting material for the selenium solution A, and the subsequent refining process, but it is usually 1 to 110 liters. Contains about Q.
次に、セレン溶液イが収容された混合槽２内にタンク５
から活性炭口を供給する。この活性炭口には、通常の活
性炭が使用可能である。そして、この活性炭口の粒径は
、水銀の吸着量と濾過性とを考慮して決められ、通常０
．５〜２．０ｍｍ程度のものが好適に用いられる。０．
５ｆｆｌｆｆ１未満のものでは、粒径が小さいことから
水銀に対する吸着表面積が大きいものの、粒径が小さす
ぎて濾布などを目詰まりさせるなど濾過性が悪化するな
どの不都合が生じる。また、２．０ｍｍを越えるもので
は、粒径が大きいことから濾過性が良好であるが、粒径
が大きすぎて水銀に対する吸着表面積が小さく精製効率
が悪いなどの不都合が生じる。また、上記セレン溶液イ
に対する活性炭口の添加量は、セレン溶液イ中の含有水
銀量や活性炭口の水銀吸着能などにより決められ、通常
０．１〜３．Ｏｗ／ｖ％程度の範囲とされる。Next, a tank 5 is placed in the mixing tank 2 containing the selenium solution A.
Supply activated carbon from the outlet. Ordinary activated carbon can be used in this activated carbon port. The particle size of this activated carbon port is determined by taking into account the amount of mercury adsorbed and the filterability, and is usually 0.
．． A material having a diameter of about 5 to 2.0 mm is preferably used. 0.
If the particle size is less than 5fflff1, the adsorption surface area for mercury is large due to the small particle size, but the particle size is too small, resulting in problems such as poor filterability such as clogging of filter cloth. On the other hand, if the particle size exceeds 2.0 mm, the filterability is good because of the large particle size, but the particle size is too large, resulting in disadvantages such as a small adsorption surface area for mercury and poor purification efficiency. The amount of activated carbon added to the selenium solution A is determined depending on the amount of mercury contained in the selenium solution A and the mercury adsorption capacity of the activated carbon, and is usually 0.1 to 3. The range is approximately Ow/v%.
次に、このように混合１２内に供給されたセレン溶液イ
および活性炭口を攪拌器４によって攪拌、混合する。こ
のときの攪拌器４による攪拌速度は、攪拌によって流動
床としてセレン溶液イ中を対流する活性炭口と水銀との
接触機会の増大と、攪拌器４で消費される攪拌エネルギ
ーとの兼合いで決まる攪拌効率などが考慮され、通常６
０〜１２Ｏｒ、ｐ、ｍ。Next, the selenium solution A and the activated carbon thus supplied into the mixer 12 are stirred and mixed by the stirrer 4. The stirring speed by the stirrer 4 at this time is determined by the balance between increasing the contact opportunities between the activated carbon port and the mercury, which convects in the selenium solution as a fluidized bed, and the stirring energy consumed by the stirrer 4. Considering stirring efficiency, etc., usually 6
0-12Or, p, m.
程度とされる。そして、この攪拌時間は、攪拌速度など
により決められ、通常３０〜９０分程度とされる。また
、攪拌時の液温は、通常２０〜４０℃程度の範囲とされ
る。２０℃未満のものは、液温か低すぎて活性炭口の水
銀吸着能か低下するなどの不都合が生じる。４０℃を越
えるものでは、液温か高すぎて活性炭口の水銀吸着能が
頭打ちとなり不経済であるなとの不都合が生じる。It is considered to be a degree. The stirring time is determined depending on the stirring speed and the like, and is usually about 30 to 90 minutes. Further, the liquid temperature during stirring is usually in the range of about 20 to 40°C. If it is less than 20°C, the liquid temperature is too low, resulting in disadvantages such as a decrease in the mercury adsorption capacity of the activated carbon port. If the temperature exceeds 40°C, the liquid temperature is too high and the mercury adsorption capacity of the activated carbon port reaches its peak, resulting in the disadvantage that it is uneconomical.
次に、このように混合槽２内で十分に攪拌されたセレン
溶液イと活性炭口とからなる混合液ハは、パイプ８を介
して濾別装置３のロート９に供給される。そして、この
ロート９においては、濾布９ａにより上記混合液ハ中の
水銀を吸着した活性炭口′ とセレン溶液イ′とが分別
される。Next, the mixed liquid C consisting of the selenium solution A and the activated carbon port sufficiently stirred in the mixing tank 2 as described above is supplied to the funnel 9 of the filtration device 3 via the pipe 8. In the funnel 9, a filter cloth 9a separates the activated carbon port' which has adsorbed mercury in the mixed liquid C and the selenium solution A'.
このようにして得られたセレン溶液イ′は、含有されて
いた水銀が活性炭口によって吸着され、分別除去されて
いるので、含有水銀量が極めて少ないものとなる。The selenium solution I' thus obtained has an extremely small amount of mercury because the mercury contained therein has been adsorbed by the activated carbon port and separated and removed.
上記の実施例では、セレン溶液イと活性炭口とを混合槽
２内に収容し、活性炭口を流動床としてセレン溶液イ中
を対流させるようにしたが、例えば円筒状のカラム容器
内に活性炭を詰め込んでおき、このカラム容器の下側ウ
−らセレン溶液を注入してカラム容器の上側からオーバ
ーフローさせるか、あるいはカラム容器の上側からセレ
ン溶液を注入してカラム容器の下側から溶出させること
によって、セレン溶液イと活性炭口とを固液接触させる
ようにしても良い。そして、この実施例においてカラム
容器に注入さ仕るセレン溶液の注入速度は、カラム容器
容積およびカラム容器内に充填される活性炭量やこの活
性炭間を流れるセレン溶液の滞留時間などにより決めら
れる。この実施例にあっては、上記の実施例とほぼ同様
の作用効果を得ることができると共に、活性炭口の水銀
吸着能が低下するまで可能な限りセレン溶液イを流し続
けることができるので、連続的な水銀除去処理を行なう
ことができる。In the above embodiment, the selenium solution A and the activated carbon port were placed in the mixing tank 2, and the activated carbon port was used as a fluidized bed to cause convection in the selenium solution A. For example, activated carbon was placed in a cylindrical column container. Either the selenium solution is injected from the bottom of the column container and the selenium solution overflows from the top of the column container, or the selenium solution is injected from the top of the column container and eluted from the bottom of the column container. Alternatively, the selenium solution A and the activated carbon port may be brought into solid-liquid contact. In this embodiment, the injection rate of the selenium solution into the column container is determined by the volume of the column container, the amount of activated carbon filled in the column container, and the residence time of the selenium solution flowing between the activated carbons. In this embodiment, almost the same effects as in the above embodiment can be obtained, and the selenium solution A can be continued to flow as much as possible until the mercury adsorption capacity of the activated carbon port decreases. mercury removal treatment can be performed.
以下、実験例を示してこの発明の作用効果を明確にする
。Hereinafter, the effects of this invention will be clarified by showing experimental examples.
（実施例１）
図面に示した水銀除去装置を用いてセレン溶液中の水銀
を活性炭に吸着させることにより除去した。すなわち、
セレン溶液として亜セレン酸ソーダ液を使用し、この亜
セレン酸ソーダ液（Ｓｅ・・１３０９／（１，Ｈｇ・−
３，３０Ｍ９／（１）６ｋ（ｌに活性炭１０に９を投入
し、攪拌速度６０ｒ、ｐ、ｍ程度で約６０分攪拌し、そ
の後濾布による自然濾過を行なった。その結果、濾液中
において、Ｓｅ量が１３０９／Ｑで変わらず、Ｈｇ量が
３０１ｘｙ／Ｑ以下になっており、水銀除去率は、９９
．７％であった。また、このときの濾過速度は、ｔｏｏ
ｆ！／ｍｉｎ、であった。(Example 1) Mercury in a selenium solution was removed by adsorption on activated carbon using the mercury removal apparatus shown in the drawings. That is,
A sodium selenite solution was used as the selenium solution.
3,30M9/(1) 6k (l) was charged with 9 parts of activated carbon and stirred at a stirring speed of about 60 r, p, m for about 60 minutes, and then subjected to natural filtration with a filter cloth.As a result, in the filtrate , the Se amount remains unchanged at 1309/Q, the Hg amount is below 301xy/Q, and the mercury removal rate is 99
．． It was 7%. Also, the filtration speed at this time is too
f! /min.
（比較例１）
セレン溶液中のせレンを還元し、この還元セレンに水銀
を吸着させることにより除去した。そして、セレン溶液
として実施例１と同様に亜セレン酸ソーダ液を使用し、
この亜セレン酸ソーダ液（Ｓ ｅ １３０ｇ／ Ｑ、
Ｈｇ・３．０Ｏｎ／ （ｌ ） ６ ｋＱのセレンを二
酸化イオウで一次還元し、その後濾布による自然濾過を
行なった。その結果、濾液中において、Ｓｅ量か１２９
９／ Ｑ、Ｈｇ−＝ ０．０１Ｂ／ Ｑといずれも減少
した。また、このときの濾過速度は、３０Ｑ／ｍｉｎ、
であった。(Comparative Example 1) Serenium in a selenium solution was reduced, and mercury was removed by adsorbing the reduced selenium. Then, as in Example 1, a sodium selenite solution was used as the selenium solution,
This sodium selenite solution (S e 130g/Q,
Hg·3.0 On/(l) 6 kQ of selenium was primarily reduced with sulfur dioxide, and then subjected to natural filtration using a filter cloth. As a result, the amount of Se in the filtrate was 129
Both decreased to 9/Q and Hg-=0.01B/Q. In addition, the filtration rate at this time was 30Q/min,
Met.
これらの実験例から明らかなように、実施例１は、比較
例１に比べて濾過速度が３倍以上も速いことから作業性
に優れ、しかもせレンの損失がないことがらセレンの精
製コストを低減できることがわかる。As is clear from these experimental examples, Example 1 has excellent workability as the filtration rate is more than three times faster than Comparative Example 1, and also reduces the cost of refining selenium because there is no loss of selenium. It can be seen that this can be reduced.
（実施例２）
実施例１と同様に図面に示した水銀除去装置を用いてセ
レン溶液中の水銀を活性炭に吸着させることにより除去
した。すなわち、セレン溶液として亜セレン酸液を使用
し、この亜セレン酸液（Ｓｅ＝４８０９／Ｑ 、 Ｈｇ
量−１０３ｔ９／Ｑ 、 Ｐｅ”−３，Ｏｔｔｇ／Ｑ
）３ｋＱに活性炭５に９を投入し、攪拌速度６０ｒ、ｐ
、ｍ。(Example 2) As in Example 1, mercury in a selenium solution was removed by adsorption on activated carbon using the mercury removal apparatus shown in the drawing. That is, a selenite solution is used as a selenium solution, and this selenite solution (Se=4809/Q, Hg
Amount-103t9/Q, Pe"-3, Ottg/Q
) Activated carbon 5 to 9 was added to 3kQ, stirring speed 60r, p
, m.
程度で約６０分攪拌し、その後濾布による自然濾過を行
なった。その結果、濾液中において、Ｓｅ量が１８０９
／ｆ２で変わらず、Ｈｇ量が０．０１ｚｇ／Ｑと減少し
ており、水銀除去率は、９９．７％であった。また、Ｆ
ｅ量は、３．ｏｕ／Ｑで変わらなかった。The mixture was stirred at a low temperature for about 60 minutes, and then subjected to natural filtration using a filter cloth. As a result, the amount of Se in the filtrate was 1809
/f2, the Hg amount decreased to 0.01zg/Q, and the mercury removal rate was 99.7%. Also, F
The amount of e is 3. There was no change in ou/Q.
（比較例２）
図面に示した水銀除去装置を用いてセレン溶液中の水銀
を鉄粉を溶解させることにより比翼除去した。すなわち
、セレン溶液として亜セレン酸液を使用し、この亜セレ
ン酸液（Ｓｅ・・・１７５９／ｉ２、Ｈｇ−０，９８ｉ
９／ ＋２ 、Ｆ ｅ−３，５＊９／ ｆ２ ） ３
ｋ（ｌに鉄粉５に９を投入し、攪拌速度８０ｒ、ｐ、ｍ
、程度で約６０分攪拌し、その後濾布による自然濾過を
行なった。その結果、濾液中において、Ｓｅ量が１７５
９／（ｌで変わらず、Ｈｇ量が０．０１Ｎ９／ｆ２と減
少し、Ｆｅ量が７０１１９／（と増えた。(Comparative Example 2) Mercury in a selenium solution was removed by dissolving iron powder using the mercury removal apparatus shown in the drawing. That is, a selenite solution is used as the selenium solution, and this selenite solution (Se...1759/i2, Hg-0,98i
9/ +2 , Fe-3,5*9/ f2 ) 3
k (Pour iron powder 5 to 9 into l, stirring speed 80r, p, m
The mixture was stirred for about 60 minutes at a temperature of about 100 mL, and then subjected to natural filtration using a filter cloth. As a result, the amount of Se in the filtrate was 175
9/(l remained the same, the Hg amount decreased to 0.01N9/f2, and the Fe amount increased to 70119/(l).
また、これらの実験例から明らかなように、実施例２は
、比較例２に比べてＦｅなど新たな除去処理工程が不要
であることから、精製作業を軽減でき、かつ作業時間の
短縮を図ることができる点など有利である。In addition, as is clear from these experimental examples, Example 2 does not require a new removal process for Fe and the like compared to Comparative Example 2, so it is possible to reduce the refining work and shorten the work time. It has the advantage of being able to
「発明の効果」
以上説明したように、この発明の水銀含有セレン溶液か
らの水銀除去方法によれば、次のような優れた効果を得
ることができる。"Effects of the Invention" As explained above, according to the method of removing mercury from a mercury-containing selenium solution of the present invention, the following excellent effects can be obtained.
（１）セレン溶液中の水銀が活性炭により選択的に吸着
され除去されるので１、含有水銀量の極めて少ないセレ
ン溶液を得ることができる。(1) Since mercury in the selenium solution is selectively adsorbed and removed by activated carbon, it is possible to obtain a selenium solution containing an extremely small amount of mercury.
（２）水銀を吸着する担体として活性炭を用いたので、
＜ａ＞従来の方法と異なりセレン溶液中に鉄などの不要
物が溶出することがなく、よって不要物の除去工程を省
くことができる＜ｂ＞活性炭の濾過性が極めて良好であ
るため濾過時間を短縮できる＜ｃ＞セレンが水銀の吸着
に関与しないことがらセレンの損失がないなどの点から
水銀の除去にかかるコストを著しく低減さけることがで
きる。(2) Since activated carbon was used as a carrier to adsorb mercury,
<a> Unlike conventional methods, unnecessary substances such as iron do not elute into the selenium solution, so the process of removing unnecessary substances can be omitted. <b> Filtration time is reduced due to the extremely good filterability of activated carbon. <c> Since selenium does not participate in the adsorption of mercury, there is no loss of selenium, and the cost for removing mercury can be significantly reduced.
（３）セレン溶液と活性炭とを固液接触させる際に従来
の方法と異なり、Ｈ２Ｓ ｅ、 ＨｔＰ ｅなどの有毒
ガスが発生する恐れがないなど安全性を確保することが
できる。(3) Unlike conventional methods, when bringing selenium solution and activated carbon into solid-liquid contact, safety can be ensured as there is no risk of generating toxic gases such as H2Se and HtPe.
図面は、この発明のセレン溶液中の水銀除去方法を実施
する上で好適に用いられる水銀除去装置の一例を示す概
略構成図である。
イ・・・セレン溶液、口・・・活性炭。The drawing is a schematic configuration diagram showing an example of a mercury removal apparatus suitably used in carrying out the method for removing mercury from a selenium solution of the present invention. A...Selenium solution, mouth...Activated carbon.
Claims (1)
に選択的に水銀を吸着させることによって、上記セレン
溶液から水銀を除去することを特徴とする水銀含有セレ
ン溶液からの水銀除去方法。A method for removing mercury from a mercury-containing selenium solution, characterized in that mercury is removed from the selenium solution by bringing the mercury-containing selenium solution into solid-liquid contact with activated carbon and selectively adsorbing mercury onto the activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11794186A JPH0765128B2 (en) | 1986-05-22 | 1986-05-22 | Method for removing mercury from selenium solution containing mercury |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11794186A JPH0765128B2 (en) | 1986-05-22 | 1986-05-22 | Method for removing mercury from selenium solution containing mercury |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62274032A true JPS62274032A (en) | 1987-11-28 |
| JPH0765128B2 JPH0765128B2 (en) | 1995-07-12 |
Family
ID=14724011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11794186A Expired - Lifetime JPH0765128B2 (en) | 1986-05-22 | 1986-05-22 | Method for removing mercury from selenium solution containing mercury |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0765128B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518549A (en) * | 2003-12-17 | 2007-07-12 | オウトクンプ テクノロジー オサケ ユキチュア | Reuse method of consumable selenium filter body |
| US8709255B2 (en) | 2010-06-08 | 2014-04-29 | Phillips 66 Company | Selenium removal methods and systems |
| CN105130057A (en) * | 2015-07-13 | 2015-12-09 | 江苏凯力克钴业股份有限公司 | Nickel and cobalt production enterprise raffinate waste water deep processing recovery device |
| CN106975434A (en) * | 2017-04-10 | 2017-07-25 | 浙江工业大学 | Mercury-containing vapor treatment pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996036U (en) * | 1972-12-12 | 1974-08-19 | ||
| JPS5486253U (en) * | 1977-11-29 | 1979-06-19 | ||
| JPS6046275U (en) * | 1983-09-05 | 1985-04-01 | 株式会社 寿 | Shape pencil |
| JPS62199384U (en) * | 1986-06-06 | 1987-12-18 |
-
1986
- 1986-05-22 JP JP11794186A patent/JPH0765128B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996036U (en) * | 1972-12-12 | 1974-08-19 | ||
| JPS5486253U (en) * | 1977-11-29 | 1979-06-19 | ||
| JPS6046275U (en) * | 1983-09-05 | 1985-04-01 | 株式会社 寿 | Shape pencil |
| JPS62199384U (en) * | 1986-06-06 | 1987-12-18 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518549A (en) * | 2003-12-17 | 2007-07-12 | オウトクンプ テクノロジー オサケ ユキチュア | Reuse method of consumable selenium filter body |
| US8709255B2 (en) | 2010-06-08 | 2014-04-29 | Phillips 66 Company | Selenium removal methods and systems |
| CN105130057A (en) * | 2015-07-13 | 2015-12-09 | 江苏凯力克钴业股份有限公司 | Nickel and cobalt production enterprise raffinate waste water deep processing recovery device |
| CN106975434A (en) * | 2017-04-10 | 2017-07-25 | 浙江工业大学 | Mercury-containing vapor treatment pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0765128B2 (en) | 1995-07-12 |
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