JPS6337174B2 - - Google Patents
Info
- Publication number
- JPS6337174B2 JPS6337174B2 JP3512185A JP3512185A JPS6337174B2 JP S6337174 B2 JPS6337174 B2 JP S6337174B2 JP 3512185 A JP3512185 A JP 3512185A JP 3512185 A JP3512185 A JP 3512185A JP S6337174 B2 JPS6337174 B2 JP S6337174B2
- Authority
- JP
- Japan
- Prior art keywords
- silver
- muddy
- cloth basket
- waste liquid
- water
- 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
- 229910052709 silver Inorganic materials 0.000 claims description 68
- 239000004332 silver Substances 0.000 claims description 68
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 57
- 239000004744 fabric Substances 0.000 claims description 13
- -1 Silver halide Chemical class 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 4
- 238000005185 salting out Methods 0.000 claims description 3
- 229910021607 Silver chloride Inorganic materials 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 1
- 240000005499 Sasa Species 0.000 description 1
- 229910021612 Silver iodide Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- 229940045105 silver iodide Drugs 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- Removal Of Specific Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は主として写真フイルム現像工程から排
出される銀含有排液から銀を回収する方法に係
り、実験室規模から工業規模に至る広範囲に利用
可能であり、工程が簡単で、収率が良く、かつ有
害物質を排出しない銀の回収方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention mainly relates to a method for recovering silver from a silver-containing waste liquid discharged from a photographic film developing process, and is applicable to a wide range of applications from laboratory scale to industrial scale. The present invention relates to a silver recovery method that is possible, has simple steps, high yield, and does not emit harmful substances.
写真フイルムには銀塩が塗布されており、現像
工程において、ハロゲン化銀を含む排液が排出さ
れる。銀は高価であるため、この排液から銀を回
収することが従来から行なわれている。かかる従
来の銀の回収方法はハロゲン化銀をシアンナトリ
ウム、シアンカリ等で還元して粗銀板を作り、こ
れを電解精製するものであつた。
Photographic film is coated with silver salt, and during the development process, a waste solution containing silver halide is discharged. Since silver is expensive, it has been conventional practice to recover silver from this waste liquid. The conventional method for recovering silver was to reduce silver halide with sodium cyanide, cyanpotash, etc. to produce a crude silver plate, which was then subjected to electrolytic refining.
しかるに、このような従来の銀の回収方法はシ
アン化合物を使用するため、作業に危険が伴な
い、その危険を防止するための安全設備が必要で
あること、それにシアン系化合物を含む排液が出
るため、公害問題が発生し、水質汚濁基準を守る
ために相当の設備を必要とする欠点があつた。
However, since these conventional silver recovery methods use cyanide, the work is dangerous, safety equipment is required to prevent this risk, and wastewater containing cyanide is dangerous. Because of this, pollution problems arose, and considerable equipment was required to comply with water pollution standards.
本発明はこのような従来技術の欠点を解消し、
公害発生の危険性がなく、工程が簡単でしかも収
率の良い銀含有排液から銀の回収方法を提供する
ものである。 The present invention solves these drawbacks of the prior art,
The purpose of the present invention is to provide a method for recovering silver from a silver-containing wastewater that has no risk of causing pollution, has a simple process, and has a high yield.
上記問題点を解決するため、本発明は次のよう
な手段をとるものである。
In order to solve the above problems, the present invention takes the following measures.
即ち、銀含有排液を塩析してハロゲン化銀を
得、これを金属アルミで還元することにより泥状
銀とし、この泥状銀を希硫酸で洗浄して予備精製
した後、電解液中に透水性の素焼き筒と布製かご
を浸漬させると共に同素焼き筒内には陽極を、同
布製かご内には陰極を設けることにより形成され
る電解装置のその素焼き筒内に上記泥状銀を入
れ、これを電解して布製かご内に砂粒状の笹銀を
析出させるものである。 That is, silver halide is obtained by salting out a silver-containing waste liquid, which is reduced with metal aluminum to obtain muddy silver. After prepurification by washing this muddy silver with dilute sulfuric acid, it is poured into an electrolytic solution. The slurry silver is placed in the unglazed cylinder of an electrolytic device formed by immersing a water-permeable unglazed cylinder and a cloth basket in water, and providing an anode in the unglazed cylinder and a cathode in the cloth basket. This is electrolyzed to deposit sand grain-shaped bamboo silver inside the cloth basket.
以下、本発明の手段を更に具体的に説明する。 Hereinafter, the means of the present invention will be explained in more detail.
本発明に使用される銀含有排液とは主として写
真、Ｘ線写真等のフイルムの現像排液で塩化銀、
沃化銀、臭化銀等のハロゲン化銀を含む排液をい
うが、他の分野から排出される銀含有排液でも良
い。 The silver-containing waste liquid used in the present invention is mainly a waste liquid from developing films such as photographs and X-ray photographs, and contains silver chloride, silver chloride, etc.
This refers to a waste liquid containing silver halides such as silver iodide and silver bromide, but it may also be a silver-containing waste liquid discharged from other fields.
まず、本発明においては銀含有排液を塩析し、
ハロゲン化銀を沈殿させる。塩析剤としては塩化
ナトリウム、塩化カリウム、塩化アルミ等、通常
の無機塩でよいが、好ましくは塩化ナトリウムで
ある。 First, in the present invention, the silver-containing waste liquid is salted out,
Precipitate silver halide. As the salting-out agent, common inorganic salts such as sodium chloride, potassium chloride, and aluminum chloride may be used, but sodium chloride is preferred.
銀含有排液に無機塩を加え、ハロゲン化銀を沈
殿として回収したなら、次にこのハロゲン化銀を
金属アルミで還元し、泥状銀を得る。 After adding an inorganic salt to the silver-containing waste liquid and recovering silver halide as a precipitate, this silver halide is then reduced with metal aluminum to obtain muddy silver.
金属アルミは粒状、粉末状、箔状のものが使用
できるが表面積の大きい箔状のものが好ましい。
還元反応はハロゲン化銀を水中に入れ、金属アル
ミを加えて撹拌することにより進行する。ハロゲ
ン化銀として塩化銀を例にとると反応は下式のよ
うに示すことができる。 Metal aluminum can be used in the form of granules, powder, or foil, but foils with a large surface area are preferred.
The reduction reaction proceeds by placing silver halide in water, adding metal aluminum, and stirring. Taking silver chloride as an example of silver halide, the reaction can be expressed as shown in the following equation.
3Ag+Cl-＋Al→3Ag＋Al3+＋3Cl-
つまり、３モルの塩化銀に１モルの金属アルミ
を反応させることにより、３モルの銀が得られ
る。 3Ag + Cl - +Al→3Ag+Al 3+ +3Cl - That is, by reacting 3 moles of silver chloride with 1 mole of metallic aluminum, 3 moles of silver can be obtained.
ここで得られる銀は泥状銀である。反応が終了
したなら、過剰の金属アルミを除去し、更に付着
している金属アルミを溶出させるために、硫酸
（１＋２）を加え、蒸留水で数回洗浄することが
好ましい。この硫酸洗浄は銀の収率を低下させる
こともなく、銀の予備精製の意味があるため好ま
しいものである。 The silver obtained here is mud silver. When the reaction is completed, it is preferable to add sulfuric acid (1+2) and wash several times with distilled water in order to remove excess metal aluminum and further elute adhering metal aluminum. This sulfuric acid washing is preferable because it does not reduce the yield of silver and is useful for preliminary purification of silver.
勿論、ハロゲン化銀の還元反応は銀よりイオン
化傾向の小さい金属、たとえばＫ、Na、Ca、
Mg、Zn、Fe、Ni等によつても進行するが、取
扱いやすさ、水質汚濁防止等の点から本発明では
Alを使用する必要がある。 Of course, the reduction reaction of silver halide is possible with metals that have a smaller tendency to ionize than silver, such as K, Na, Ca,
It also progresses due to Mg, Zn, Fe, Ni, etc., but from the viewpoint of ease of handling and prevention of water pollution, the present invention
It is necessary to use Al.
次に泥状銀を電解し、砂粒状の笹銀を析出させ
る。 Next, the muddy silver is electrolyzed to precipitate sand grain-like bamboo silver.
泥状銀の電解方法は特に限定されないが、その
一例を図面に示した。 Although the method of electrolyzing muddy silver is not particularly limited, an example thereof is shown in the drawings.
１は電解容器であり、その中に電解液２が入れ
られている。電解液２は硝酸と硝酸銀の希薄溶液
が好ましい。３は陽極、４は陰極であり、夫々直
流電源５の極と極に接続している。陽極３は
炭素棒またはカーボンを合成樹脂で固めた導電性
樹脂が使われる。陰極４は金属板で、ステンレス
板が好ましい。陽極側には泥状銀６が透水性の素
焼き筒７の中に詰められており、その中に陽極３
が没入されている。一方、陰極側は布製のかご８
を電解液２に入れ、その中に陰極４が没入されて
いる。布製のかご８は析出する笹銀９を受け止
め、取り出しやすくする意味と、成長した笹銀９
の結晶が延びて短絡を防止する効果を有する。 Reference numeral 1 designates an electrolytic container in which an electrolytic solution 2 is placed. The electrolytic solution 2 is preferably a dilute solution of nitric acid and silver nitrate. 3 is an anode, and 4 is a cathode, which are connected to the poles of the DC power source 5, respectively. The anode 3 is made of a carbon rod or a conductive resin made by hardening carbon with a synthetic resin. The cathode 4 is a metal plate, preferably a stainless steel plate. On the anode side, muddy silver 6 is packed in a water-permeable unglazed cylinder 7, and the anode 3 is placed inside it.
is immersed. On the other hand, on the cathode side, there is a cloth basket 8.
is placed in an electrolytic solution 2, and a cathode 4 is immersed therein. The basket 8 made of cloth is meant to catch the precipitated Sasagin 9 and make it easier to take out, and also to hold the Sasagin 9 that has grown.
The crystals extend and have the effect of preventing short circuits.
図のような電解装置を使用すれば泥状銀を順次
補給しながら連続的に笹銀を回収することができ
る。電解に要する電圧は２〜3V、電流密度は10
〜20mA／cm2が好ましい。 If an electrolyzer as shown in the figure is used, it is possible to continuously recover bamboo silver while sequentially replenishing muddy silver. The voltage required for electrolysis is 2 to 3 V, and the current density is 10
~20 mA/ cm2 is preferred.
得られた砂粒状の笹銀は、そのまま取り扱うこ
ともできるが、溶融して塊状、板状等にすること
が好ましい。 Although the obtained sand grain-like bamboo silver can be handled as is, it is preferable to melt it and make it into a lump, a plate, or the like.
銀含有排液をビーカーに入れ、粗製食塩を加
え、主として塩化銀からなる沈殿物を得た。この
沈殿を別した後、ビーカーに入れ、表面を覆う
程度に水を加えた。次いで、アルミ箔を入れて撹
拌すると発熱を伴なう急激な反応が起こつた。反
応終了後、アルミ箔をピンセツトで取り除いてか
ら（１＋２）硫酸を加えて未反応の金属アルミを
完全に溶かし、次いで蒸留水で数回洗浄した後、
生成した泥状銀を取り出した。
The silver-containing waste liquid was placed in a beaker and crude common salt was added to obtain a precipitate mainly consisting of silver chloride. After separating the precipitate, it was placed in a beaker and water was added to cover the surface. Next, when aluminum foil was added and stirred, a rapid reaction accompanied by heat generation occurred. After the reaction is complete, remove the aluminum foil with tweezers, add (1+2) sulfuric acid to completely dissolve the unreacted metal aluminum, and then wash with distilled water several times.
The produced muddy silver was taken out.
次に泥状銀を透水性の素焼き筒に入れ、図に示
した電解装置を用いて電解精製を行なつた。陽極
に炭素棒、陰極にステンレス板を使用し、電解液
は0.5規定の硝酸と0.5規定の硝酸銀溶液を用い
た。電解液を時々撹拌し、泥状銀を少しずつ補給
しながら直流電流を通した結果、陰極のステンレ
ス板表面に砂粒状の笹銀が析出し、布製かごの底
に留つた。 Next, the slurry silver was placed in a water-permeable unglazed cylinder and electrolytically refined using the electrolytic apparatus shown in the figure. A carbon rod was used as the anode, a stainless steel plate was used as the cathode, and the electrolytes were 0.5N nitric acid and 0.5N silver nitrate solution. As a result of passing a direct current through the electrolyte while occasionally stirring the electrolyte and replenishing muddy silver little by little, sand grain-shaped bamboo silver was deposited on the surface of the stainless steel plate of the cathode and remained at the bottom of the cloth basket.
この笹銀を回収し、洗浄後、型内で溶融するこ
とにより、銀塊を得ることができた。 This bamboo silver was collected, washed, and then melted in a mold to obtain a silver ingot.
本発明は次のような優れた効果を奏する。 The present invention has the following excellent effects.
(イ) ハロゲン化銀を金属アルミで還元するため、
有害物質が生成せず、水質汚濁、公害の心配が
ない。(a) To reduce silver halide with metallic aluminum,
No harmful substances are generated, and there is no need to worry about water pollution or pollution.
(ロ) 泥状銀を銀板等に固形化することなく、直接
電解精製に供するので回収工程が簡素化され、
設備を簡略化できる。(b) The recovery process is simplified because the slurry silver is directly subjected to electrolytic refining without being solidified into silver plates, etc.
Equipment can be simplified.
(ハ) 銀回収の収率が良く、回収コストを低減でき
る。(c) Silver recovery yield is high and recovery costs can be reduced.
(ニ) 泥状銀を希硫酸で洗浄することにより予備精
製され、銀の純度が向上する。(d) Prepurification is achieved by washing muddy silver with dilute sulfuric acid, improving the purity of silver.
(ホ) 電解液中に透水性の素焼き筒と布製かごを浸
漬させると共に同素焼き筒内には陽極を、同布
製かご内には陰極を設けることにより電解装置
を形成し、同素焼き筒内に上記泥状銀を入れ、
これを電解する様にしたことにより、同素焼き
筒を介して電解液内に泥状銀が散らばるのを防
止することができることに加えて、布製かご内
に砂粒状の笹銀を析出させて回収を容易に行な
うことができる。(E) An electrolytic device is formed by immersing a water-permeable unglazed cylinder and a cloth basket in an electrolytic solution, and providing an anode in the unglazed cylinder and a cathode in the cloth basket; Add the above slurry silver,
By electrolyzing this, in addition to being able to prevent muddy silver from scattering into the electrolyte through the isochrome cylinder, it is also possible to collect sand grain-shaped bamboo silver by depositing it inside the cloth basket. can be easily carried out.
図は泥状銀の電解精製を示す概略図である。
１……容器、２……電解液、３……陽極、４…
…陰極、５……直流電源、６……泥状銀、７……
透水性素焼き筒、８……布製かご、９……笹銀。
The figure is a schematic diagram showing electrolytic refining of muddy silver. 1... Container, 2... Electrolyte, 3... Anode, 4...
...Cathode, 5...DC power supply, 6...Mudy silver, 7...
Water-permeable unglazed cylinder, 8...cloth basket, 9...sasa silver.
Claims (1)
れを金属アルミで還元することにより泥状銀と
し、この泥状銀を希硫酸で洗浄して予備精製した
後、電解液中に透水性の素焼き筒と布製かごを浸
漬させると共に同素焼き筒内には陽極を、同布製
かご内には陰極を設けることにより形成される電
解装置のその素焼き筒内に上記泥状銀を入れ、こ
れを電解して布製かご内に砂粒状の笹銀を析出さ
せることを特徴とする銀の回収方法。1 Silver halide is obtained by salting out the silver-containing waste liquid, which is reduced with metal aluminum to obtain muddy silver. After prepurification by washing this muddy silver with dilute sulfuric acid, it is added to the electrolyte solution. Putting the muddy silver into the unglazed cylinder of an electrolytic device formed by immersing a water-permeable unglazed cylinder and a cloth basket, and providing an anode in the unglazed cylinder and a cathode in the cloth basket, A method for recovering silver, which is characterized by electrolyzing this to precipitate sand grain-like bamboo silver in a cloth basket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60035121A JPS61194127A (en) | 1985-02-23 | 1985-02-23 | Method for recovering silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60035121A JPS61194127A (en) | 1985-02-23 | 1985-02-23 | Method for recovering silver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61194127A JPS61194127A (en) | 1986-08-28 |
| JPS6337174B2 true JPS6337174B2 (en) | 1988-07-25 |
Family
ID=12433096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60035121A Granted JPS61194127A (en) | 1985-02-23 | 1985-02-23 | Method for recovering silver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61194127A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4406751B2 (en) * | 2003-05-13 | 2010-02-03 | Ｄｏｗａメタルテック株式会社 | Method for storing or transporting hydrogen peroxide-containing wastewater and processing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS486683U (en) * | 1971-06-05 | 1973-01-25 | ||
| JPS4995803A (en) * | 1973-01-18 | 1974-09-11 | ||
| JPS5018318A (en) * | 1973-06-22 | 1975-02-26 | ||
| JPS5335883A (en) * | 1976-09-14 | 1978-04-03 | Toshiba Corp | Production management data computing system |
| JPS542848A (en) * | 1977-06-02 | 1979-01-10 | Schips Helmut | Device of pushing in label of sewing machine |
| JPS5511198A (en) * | 1978-07-11 | 1980-01-25 | Tenneco Chem | Removing metal from waste material |
| JPS5776138A (en) * | 1980-10-28 | 1982-05-13 | Sumitomo Metal Mining Co Ltd | Recovery of silver from photographic waste water |
-
1985
- 1985-02-23 JP JP60035121A patent/JPS61194127A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS486683U (en) * | 1971-06-05 | 1973-01-25 | ||
| JPS4995803A (en) * | 1973-01-18 | 1974-09-11 | ||
| JPS5018318A (en) * | 1973-06-22 | 1975-02-26 | ||
| JPS5335883A (en) * | 1976-09-14 | 1978-04-03 | Toshiba Corp | Production management data computing system |
| JPS542848A (en) * | 1977-06-02 | 1979-01-10 | Schips Helmut | Device of pushing in label of sewing machine |
| JPS5511198A (en) * | 1978-07-11 | 1980-01-25 | Tenneco Chem | Removing metal from waste material |
| JPS5776138A (en) * | 1980-10-28 | 1982-05-13 | Sumitomo Metal Mining Co Ltd | Recovery of silver from photographic waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61194127A (en) | 1986-08-28 |
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