JPH0122834B2 - - Google Patents
Info
- Publication number
- JPH0122834B2 JPH0122834B2 JP20667185A JP20667185A JPH0122834B2 JP H0122834 B2 JPH0122834 B2 JP H0122834B2 JP 20667185 A JP20667185 A JP 20667185A JP 20667185 A JP20667185 A JP 20667185A JP H0122834 B2 JPH0122834 B2 JP H0122834B2
- Authority
- JP
- Japan
- Prior art keywords
- mercury
- liquid
- sulfuric acid
- amount
- waste
- 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
Links
- 229910052753 mercury Inorganic materials 0.000 claims description 28
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- CUGMJFZCCDSABL-UHFFFAOYSA-N arsenic(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[As+3].[As+3] CUGMJFZCCDSABL-UHFFFAOYSA-N 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 239000013522 chelant Substances 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Description
【発明の詳細な説明】 発明の目的 本発明は、液中の水銀除去方法に関する。[Detailed description of the invention] Purpose of invention The present invention relates to a method for removing mercury from a liquid.
従来技術
液中の水銀除去方法には、キレート樹脂による
方法あるいは、硫化水素を加える方法等がある。Prior Art Methods for removing mercury from liquid include a method using a chelate resin and a method of adding hydrogen sulfide.
しかしながら、キレート樹脂を使用する方法に
おいては、処理すべき水銀の量が多くなるとキレ
ート樹脂にかかるコストが高くなり、工業的方法
として好ましいものでなかつた。 However, in the method using a chelate resin, as the amount of mercury to be treated increases, the cost of the chelate resin increases, and this method is not preferred as an industrial method.
また、硫化水素による方法においては、水銀を
選択的に除去出来ないこと、あるいは未反応の硫
化水素ガスが漏洩し、作業環境を悪化する等の問
題があつた。 Further, in the method using hydrogen sulfide, there were problems such as inability to selectively remove mercury or leakage of unreacted hydrogen sulfide gas, deteriorating the working environment.
そこで、発明者等が鋭意検討した結果、次の発
明をなした。 Therefore, as a result of intensive study, the inventors have made the following invention.
発明の構成
即ち、本発明は、液中の水銀を、硫化砒素を添
加し、選択的に水銀を除去する方法である。Structure of the Invention That is, the present invention is a method for selectively removing mercury from a liquid by adding arsenic sulfide.
さらに、本発明の実施態様として、水銀を含む
液が、硫酸酸性である方法も提供する。 Furthermore, as an embodiment of the present invention, a method is also provided in which the mercury-containing liquid is acidic with sulfuric acid.
また、水銀を含む液が、廃酸である方法さら
に、廃酸中にReを含む場合の方法も提供する。 The present invention also provides a method in which the mercury-containing liquid is a waste acid, and also a method in which the waste acid contains Re.
発明の具体的説明
本発明における対象液は、水銀を含む液であ
る。特には、硫酸酸性の液であつて、例えば廃酸
等が例にあげられる。DETAILED DESCRIPTION OF THE INVENTION The target liquid in the present invention is a liquid containing mercury. In particular, it is a sulfuric acid acidic liquid, such as waste acid.
その中でも、非鉄製錬所で発生する硫酸工程で
の廃酸が好適な対象である。 Among these, waste acid generated in the sulfuric acid process at non-ferrous smelters is a suitable target.
さらに、本発明の対象液は、水銀と他の元素が
存在する液に好ましく適用される。他の元素とし
ては、例えばレニウムのような元素である。 Furthermore, the target liquid of the present invention is preferably applied to a liquid in which mercury and other elements are present. Other elements include, for example, rhenium.
液中の水銀は、数mg／のオーダーである場合
は、キレート法等でも良いが、200〜100mg／よ
り多い場合キレート法等では好ましくないため、
本発明方法が適用される。 If the amount of mercury in the liquid is on the order of several mg/ml, chelation methods may be used, but if the amount is more than 200 to 100 mg/ml, chelating methods, etc. are not preferred.
The method of the invention is applied.
液に添加する硫化砒素は、市販のものでも良い
が、非鉄製錬所内で産出される硫化砒素が好まし
い。添加量もさほど必要でなく、工業上も好まし
いからである。 The arsenic sulfide added to the liquid may be commercially available, but arsenic sulfide produced in a non-ferrous smelter is preferred. This is because the amount added is not so necessary and it is also preferable from an industrial perspective.
硫化砒素の添加量は、２〜６％の反応効率であ
ることを考慮して添加される。 The amount of arsenic sulfide to be added is determined considering the reaction efficiency of 2 to 6%.
従つて、液中の水銀量が、20〜100mg／の場
合は、硫化砒素は、乾量で0.1ｇ／〜0.5ｇ／
添加することにより液中の水銀を５mg／程度に
下げることができる。 Therefore, when the amount of mercury in the liquid is 20 to 100 mg/, the dry amount of arsenic sulfide is 0.1 g/~0.5 g/
By adding mercury, the amount of mercury in the liquid can be lowered to about 5 mg.
反応処理時間は、10〜40分程度でよい。 The reaction treatment time may be about 10 to 40 minutes.
処理温度は、常温で充分である。 Room temperature is sufficient for the treatment temperature.
撹拌速度は、400〜800rpm程度で良い。 The stirring speed may be about 400 to 800 rpm.
また、非鉄製錬所等で発生する廃酸について
は、レニウム等が10〜30mg／程度含まれるが、
これらについては、硫化砒素と反応しないため、
後のレニウムの回収を容易にする。 In addition, waste acids generated at non-ferrous smelters etc. contain about 10 to 30 mg of rhenium, etc.
These do not react with arsenic sulfide, so
Facilitates subsequent recovery of rhenium.
また、硫酸濃度は、100〜300ｇ／程度が通常
である。 Further, the sulfuric acid concentration is usually about 100 to 300 g/.
発明の効果
以上のように本発明を実施することにより以下
の効果を得ることができる。Effects of the Invention By implementing the present invention as described above, the following effects can be obtained.
(1) 水銀が硫化物で回収され、砒素が溶液中に溶
解するため回収した水銀泥中のHg濃度が高い。(1) Hg concentration in the recovered mercury mud is high because mercury is recovered as sulfide and arsenic is dissolved in the solution.
(2) 特にRe等の有価物が混入している廃酸にお
いては、Re等を硫化しないでHgを選択的に硫
化できる。(2) Particularly in waste acids mixed with valuable substances such as Re, Hg can be selectively sulfurized without sulfurizing Re and the like.
(3) 非鉄製錬所等において、この程度の硫化砒素
添加量であれば、硫酸工場のガス精製系の循環
酸に添加することは可能であり、好ましい除去
方法である。(3) In non-ferrous smelters and the like, if this amount of arsenic sulfide is added, it is possible to add it to the circulating acid in the gas purification system of a sulfuric acid factory, and this is the preferred removal method.
(4) この方法によれば、非鉄製錬所等において特
別な水銀除去設備は、不要であり、既存の廃酸
用過設備により、水銀を容易に除去すること
ができる。(4) According to this method, special mercury removal equipment is not required at non-ferrous smelters, etc., and mercury can be easily removed using existing waste acid filtration equipment.
(5) この発明によれば、製品硫酸中の水銀低下に
も寄与し得ることになる。(5) According to this invention, it can also contribute to reducing mercury in product sulfuric acid.
実施例 １
銅製錬所、硫酸製造工程で発生する廃硫酸を対
象として、処理を行つた。Example 1 Waste sulfuric acid generated in the sulfuric acid manufacturing process at a copper smelter was treated.
廃硫酸の成分は、水銀64.1mg／、レニウム
19.0mg／、フリーの硫酸191ｇ／のものであ
つた。 The components of waste sulfuric acid are 64.1 mg of mercury and rhenium.
The amount of free sulfuric acid was 19.0 mg/191 g/.
この液中の水銀を除去するため、製錬所で発生
した硫化砒素泥を硫化砒素源として使用した。硫
化砒素泥の品位は、水分除きで砒素47.5％、水銀
0.21％、全イオウ52.3％であつた。 In order to remove mercury from this liquid, arsenic sulfide mud generated at the smelter was used as an arsenic sulfide source. The grade of arsenic sulfide mud is 47.5% arsenic and mercury excluding water.
The total sulfur content was 0.21%, and the total sulfur content was 52.3%.
廃硫酸１当たり、硫化砒素泥は、65％の水分
を有しており、湿量で１ｇ添加した。 Arsenic sulfide mud had a moisture content of 65% and was added in a wet amount of 1 g per 1 sulfuric acid waste.
処理時間30分、温度は常温、撹拌速度は
600rpmで処理した結果、液中の水銀は、６mg／
まで低下した。 Processing time: 30 minutes, temperature: room temperature, stirring speed:
As a result of processing at 600 rpm, the amount of mercury in the liquid was 6 mg/
It dropped to .
一方、レニウムは、19mg／とほとんど低下す
ることがなかつた。この場合は、硫化砒素の水銀
に対する利用率は、2.5％であつた。 On the other hand, rhenium hardly decreased to 19mg/. In this case, the utilization ratio of arsenic sulfide to mercury was 2.5%.
Claims (1)
水銀を除去することを特徴とする液中の水銀の除
去方法。 ２ 水銀を含む液が、硫酸酸性であることを特徴
とする特許請求の範囲第１項記載の方法。 ３ 水銀を含む液が、廃酸であることを特徴とす
る特許請求の範囲第１項記載の方法。 ４ 廃酸中にReを含むことを特徴とする特許請
求の範囲第３項記載の方法。[Scope of Claims] 1. A method for removing mercury from a liquid, which comprises adding arsenic sulfide to selectively remove mercury from the liquid. 2. The method according to claim 1, wherein the mercury-containing liquid is acidic with sulfuric acid. 3. The method according to claim 1, wherein the mercury-containing liquid is a waste acid. 4. The method according to claim 3, characterized in that the waste acid contains Re.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20667185A JPS6268584A (en) | 1985-09-20 | 1985-09-20 | Method for removing mercury in liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20667185A JPS6268584A (en) | 1985-09-20 | 1985-09-20 | Method for removing mercury in liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6268584A JPS6268584A (en) | 1987-03-28 |
| JPH0122834B2 true JPH0122834B2 (en) | 1989-04-27 |
Family
ID=16527194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20667185A Granted JPS6268584A (en) | 1985-09-20 | 1985-09-20 | Method for removing mercury in liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6268584A (en) |
-
1985
- 1985-09-20 JP JP20667185A patent/JPS6268584A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6268584A (en) | 1987-03-28 |
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