JPH0913127A - Method for recovering gold from gold-containing material and device therefor - Google Patents
Method for recovering gold from gold-containing material and device thereforInfo
- Publication number
- JPH0913127A JPH0913127A JP3098282A JP9828291A JPH0913127A JP H0913127 A JPH0913127 A JP H0913127A JP 3098282 A JP3098282 A JP 3098282A JP 9828291 A JP9828291 A JP 9828291A JP H0913127 A JPH0913127 A JP H0913127A
- Authority
- JP
- Japan
- Prior art keywords
- gold
- aqueous solution
- metal
- leaching
- iron
- 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
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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金めっき品、金張り
品、金を含有する鉱石等の金含有物（以下金含有物と稱
す）から金を回収する方法と装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for recovering gold from gold-containing products such as gold-plated products, gold-plated products, ores containing gold (hereinafter referred to as gold-containing products). .
【０００２】[0002]
【従来の技術】従来、金含有物から金を回収する方法と
しては、王水による方法又はシアン化合物による方法が
用いられていた。よく知られているように、王水は硝酸
と塩酸の混合液であるため取扱は極めて危険であり、又
シアン化合物は毒物であるため、その強い毒性から取扱
は極めて危険を伴うので、公害防止、環境保全の面か
ら、強く改善が望まれていた。この要望に応えるものと
して、例えば、特開昭60-103138 号公報による提案があ
る。2. Description of the Related Art Hitherto, as a method for recovering gold from a gold-containing material, a method using aqua regia or a method using a cyanide compound has been used. As is well known, aqua regia is a mixture of nitric acid and hydrochloric acid, which is extremely dangerous to handle, and the cyanide compound is a toxic substance. However, from the aspect of environmental protection, there has been a strong demand for improvement. To meet this demand, for example, there is a proposal according to Japanese Patent Laid-Open No. 60-103138.
【０００３】この提案は、鉱石からの金、銀の浸出剤と
して3g／ｌのチオ尿素を添加した浸出水溶液に、酸化剤
として0.5g／ｌの鉄イオンを存在させ、これにアルカリ
剤として１規定の水酸化ナトリウムを添加してPHを6.5
以上とするか、0.8 ｌ／分の割合で30分に及ぶエアレー
ション後、アルカリ剤を添加してPHを4.0 以上として生
成する水酸化鉄の沈澱中に金、銀を共沈させ、該沈澱物
を分離して金、銀を回収するものである。In this proposal, 0.5 g / l of iron ion was added as an oxidizing agent to an aqueous leaching solution containing 3 g / l of thiourea as a leaching agent of gold and silver from ores, and 1 g of an alkaline agent was added thereto. Add specified sodium hydroxide to adjust pH to 6.5
After the above, or after aeration at a rate of 0.8 l / min for 30 minutes, an alkaline agent is added to coprecipitate gold and silver during the precipitation of iron hydroxide produced with a pH of 4.0 or higher. Is to separate gold and silver.
【０００４】この提案は、この提案の提案者等が、金、
銀を含有する鉱石から金、銀をチオ尿素化合物として浸
出した水溶液に、還元剤として亜鉛粉末、ヒドラジン、
亜硫酸ナトリウム等を使用して金、銀を回収したとこ
ろ、該還元剤の使用量が多量になって実用性が大幅に低
下する事を見出し、これを改善するための実験を行い、
前記した金、銀の浸出水溶液に、鉄イオンの存在下でア
ルカリ剤を添加してPHを調整すると、生成する水酸化鉄
と共に金，銀が共沈して目的が達成出来る事を知見し、
これを手段の要件としたものである。[0004] This proposal is
Gold ore from an ore containing silver, an aqueous solution in which silver is leached as a thiourea compound, zinc powder as a reducing agent, hydrazine,
When gold and silver were recovered using sodium sulfite and the like, it was found that the amount of the reducing agent used became large and the practicality was significantly reduced, and an experiment was conducted to improve this.
It was found that when an alkaline agent is added to the leaching aqueous solution of gold and silver described above in the presence of iron ions to adjust the pH, gold and silver are co-precipitated with the generated iron hydroxide to achieve the purpose,
This is the requirement of the means.
【０００５】しかし、この提案のように、金、銀のチオ
尿素化合物を含む水溶液に、全く還元能がない鉄イオン
を金の10〜100 倍程度存在させ、直接アルカリを添加す
るか或いはエヤレーション後にアルカリを添加して上記
水溶液のPHを上昇させ、水酸化鉄を生成させつつ、この
生成する水酸化鉄と共に浸出水溶液中の金、銀を共沈さ
せると、該共沈物の量は多量となり、しかもその性状は
ゲル状を呈するスラリー状となる。これを乾燥して金を
回収する作業は困難を極め、処理作業の効率は悪化し、
実用性の向上は望めないのが実状である。However, as in this proposal, an iron ion having no reducing ability is present in an aqueous solution containing a thiourea compound of gold or silver in an amount of about 10 to 100 times that of gold, and alkali is directly added to the aqueous solution, or the emulsion is used. After that, by adding an alkali to increase the pH of the above aqueous solution and producing iron hydroxide, and coprecipitating gold and silver in the leaching aqueous solution together with the produced iron hydroxide, the amount of the coprecipitate is large. In addition, the property becomes a gel-like slurry form. The work of drying this and recovering the gold is extremely difficult, the efficiency of the processing work deteriorates,
The reality is that we cannot expect improvement in practicality.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、上記した従
来技術が有する問題点を悉く解消し、安全な方法。
短い処理時間。良好な作業性。安いコスト。で金含
有物から金を回収する方法と装置を提供する事を課題と
するものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and provides a safe method.
Short processing time. Good workability. Cheap cost. It is an object of the present invention to provide a method and apparatus for recovering gold from a gold-containing material.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、上記した
課題を達成するため、特開昭60-103138 号公報が、金属
による還元処理を断念した根拠としている、亜鉛粉末に
よる還元処理を追加実験した結果、10g ／ｌ−（浸出水
溶液）以上の亜鉛粉末が必要であり、類似金属の鉛は更
に多くの100g程度を必要とし、該鉛を25g ／ｌ程度使用
すると処理時間は24時間に及ぶ事を知見し、上記した断
念の根拠を確認した。In order to achieve the above-mentioned object, the inventors of the present invention have proposed a reduction treatment with zinc powder, which is a basis for giving up the reduction treatment with a metal in JP-A-60-103138. As a result of an additional experiment, zinc powder of 10 g / l- (leaching aqueous solution) or more is required, and about 100 g of lead, which is a similar metal, is required. If 25 g / l of lead is used, the treatment time is 24 hours. It was found that the above-mentioned abandonment was grounded.
【０００８】しかし、更に実験検討を重ねた結果、次に
示す金属を粉状体、又は線状体の形で還元剤に使用する
と、必要量は格段に異なり、鉄は2g／ｌ−（浸出水溶
液）、錫は2g／ｌ−（浸出水溶液）、ニッケルは2g／ｌ
−（浸出水溶液）、カドミウムは5g／ｌ−（浸出水溶
液) 、銅は5g／ｌ−（浸出水溶液）、アルミニウムは5g
／ｌ−（浸出水溶液）程度と大幅に減少し、しかもこれ
等の使用にあたっては、何れか１種又は２種以上を混合
して使用しても効果に差はなく、その上金含有物から金
を浸出させ、引き続き金の浸出水溶液から金を回収する
迄に２時間程度しか要しない事を知得した。However, as a result of further experimentation, when the following metals were used as a reducing agent in the form of a powder or a linear body, the required amount was significantly different, and iron was 2 g / l- (leaching Aqueous solution), tin 2g / l- (leaching solution), nickel 2g / l
-(Leached solution), Cadmium 5g / l- (Leached solution), Copper 5g / l- (Leached solution), Aluminum 5g
/ L- (leaching aqueous solution), it is significantly reduced, and in using these, there is no difference in effect even if any one kind or a mixture of two or more kinds is used. It has been found that it takes only about 2 hours until the gold is leached and then the gold is recovered from the gold leaching aqueous solution.
【０００９】本発明はこれ等の知見を基にになされたも
ので、 1.5〜5.0 重量％の第２鉄イオンと 2.0〜6.0 重
量％のチオ尿素を含有する浸出水溶液に、金の量として
2ｇ／ｌ−（浸出水溶液）以下の金含有物を浸漬し、該
浸出水溶液を60分以上攪拌及び又は振動して後、該浸出
水溶液に鉄、錫、ニッケル、カドミウム、銅、アルミニ
ウム等の金属を該金属の固液接触面積が、金属粉2g／ｌ
−（浸出水溶液）の固液接触面積と同等以上になる量添
加又は浸漬し、該浸出水溶液を15分以上攪拌及び又は振
動する金含有物から金を回収する方法を第１の手段と
し、The present invention has been made on the basis of these findings. In an leaching aqueous solution containing 1.5 to 5.0% by weight of ferric ion and 2.0 to 6.0% by weight of thiourea, the amount of gold was
A gold-containing material of 2 g / l- (leaching aqueous solution) or less is immersed, and the leaching aqueous solution is stirred and / or vibrated for 60 minutes or more, and then a metal such as iron, tin, nickel, cadmium, copper or aluminum is added to the leaching aqueous solution. The solid-liquid contact area of the metal is 2 g / l of metal powder.
-The first means is a method of adding or immersing the leaching aqueous solution in an amount equal to or larger than the solid-liquid contact area, and collecting gold from the gold-containing material that stirs and / or vibrates the leaching aqueous solution for 15 minutes or more,
【００１０】表面に鉄、錫、ニッケル、カドミウム、
銅、アルミニウム等の金属が存在する複数枚の円形金属
板を軸に貫通固定して金属体を構成し、該金属体の前記
円形金属板の一部が金浸出水溶液に浸漬し且つ回転可能
に該金浸出水溶液の容器に設けた金含有物から金を回収
する装置を第２の手段としている。Iron, tin, nickel, cadmium,
A plurality of circular metal plates containing metals such as copper and aluminum are fixed through the shaft to form a metal body, and a part of the circular metal plate of the metal body is immersed in a gold leaching aqueous solution and is rotatable. The second means is an apparatus for recovering gold from the gold-containing substance provided in the container for the gold leaching aqueous solution.
【００１１】本発明で重要な要件は、金浸出水溶液と接
する金属の固液接触面積で、本発明では、金属と金浸出
水溶液の接触面積を金属粉2g／ｌ−（浸出水溶液）と同
等以上の固液接触面積に限定している。An important requirement in the present invention is the solid-liquid contact area of the metal in contact with the gold leaching aqueous solution. In the present invention, the contact area of the metal and the gold leaching aqueous solution is equal to or more than the metal powder 2 g / l- (leaching aqueous solution). It is limited to the solid-liquid contact area.
【００１２】通常、金属粉の形状は、0.05mm程度の厚み
を有する板状が多く、上記した金属の比重はアルミニウ
ムの2.7 程度から銅の8.9 程度に及ぶ事から、本発明が
限定する金属粉2g／ｌ−（浸出水溶液）と同等の固液接
触面積とは、粉状銅から算出される 45cm2／ｌ−（浸出
水溶液）程度の接触面積を下限とする。Usually, the shape of the metal powder is often a plate having a thickness of about 0.05 mm, and the specific gravity of the above-mentioned metal ranges from about 2.7 of aluminum to about 8.9 of copper. The solid-liquid contact area equivalent to 2 g / l- (leaching aqueous solution) has a lower limit of about 45 cm 2 / l- (leaching aqueous solution) calculated from powdered copper.
【００１３】この接触面積を常に確保するには、浸出水
溶液量の変動の影響が少なく、回転数からも該接触面積
が調整出来る、例えば、金属体の金属として鉄を使用
し、該鉄を回転薄鉄板群で構成した鉄体として図７，図
８例のように使用すると、金の回収作業の作業性、処理
効率、処理コストは一段と向上する。In order to always secure this contact area, the influence of fluctuations in the amount of the leaching aqueous solution is small, and the contact area can be adjusted from the number of revolutions. For example, iron is used as the metal of the metal body and the iron is rotated. When the iron body composed of the thin iron plate group is used as shown in FIGS. 7 and 8, the workability of gold recovery work, processing efficiency, and processing cost are further improved.
【００１４】この回転薄金属板群で構成する金属体の設
置は、図７，図８例のように金浸出水溶液を収容した容
器と共に回転が可能にしても良く、又、固定して設置し
た金浸出水溶液の容器内に金属体の回転が可能となるよ
うに設置しても良い。The metal body composed of this rotating thin metal plate group may be installed so as to be rotatable together with the container containing the gold leaching aqueous solution as shown in FIGS. 7 and 8 or fixedly installed. It may be installed in the container of the gold leaching solution so that the metal body can rotate.
【００１５】[0015]
【作用】本発明は、上記の手段を用いるので、作業が安
全な上に、浸出処理時間は、24〜48時間を要するシアン
化合物による方法に比して1/12〜1/24と短くなり、３時
間を要する特開昭60-103138 号公報の提案による方法に
比して2/3 と短くなる。In the present invention, since the above means is used, the work is safe and the leaching time is 1/12 to 1/24 as compared with the method using a cyan compound which requires 24 to 48 hours. Compared with the method proposed by Japanese Patent Laid-Open No. 60-103138, which requires 3 hours, it is 2/3 as short as the method.
【００１６】又、浸出水溶液からの金の回収は、水酸化
鉄との共沈現象を伴わないので、処理物の量が大幅に減
少し、その処理物の物性は乾性である事から、金の回収
効率と回収作業能率の良い乾式精錬が使用出来る結果、
作業性は格段に向上し、処理費は大幅に低減し、金含有
物からの金の浸出率は90％以上に達し、該金浸出水溶液
からの金回収率は容易に99％以上が得らる。Further, the recovery of gold from the leaching aqueous solution is not accompanied by the coprecipitation phenomenon with iron hydroxide, so the amount of the processed product is greatly reduced, and the physical properties of the processed product are dry. As a result of being able to use dry refining with good recovery efficiency and recovery work efficiency,
The workability is remarkably improved, the processing cost is drastically reduced, the leaching rate of gold from the gold-containing material reaches 90% or more, and the gold recovery rate from the gold leaching aqueous solution can easily reach 99% or more. R.
【００１７】[0017]
【実施例】本発明者等は上記課題を達成するために種々
の実験検討を繰り返した。以下に図１〜図６の結果を得
た実験検討例について説明する。この例は、直径370mm
、胴長420mm 、内容籍18ｌの塩ビ製容器に、縦７cm横1
1cm、金めっき量32.9g/kg−（金含有物重量）の試料を
収納し、これにチオ尿素と硫酸塩の形で添加した第２鉄
イオンを含む浸出水溶液を注入し、該塩ビ製容器をボー
ルミルで100 〜110rpmの回転速度で回転し、浸出水溶液
を攪拌・振動して金浸出水溶液を得た後、該金浸出水溶
液に鉄粉を金属還元剤として添加し、更に、該塩ビ製容
器を上記方法で回転して金浸出水溶液を攪拌・振動して
金を回収した例である。EXAMPLES The present inventors repeated various experimental studies in order to achieve the above object. Hereinafter, an experimental study example that obtains the results of FIGS. 1 to 6 will be described. This example has a diameter of 370 mm
, A body length of 420 mm, a PVC container with a content of 18 liters, length 7 cm 1 width 1
A sample of 1 cm and a gold plating amount of 32.9 g / kg- (weight of gold content) was stored, and a leaching aqueous solution containing ferric ion added in the form of thiourea and sulfate was injected into the sample, and the vinyl chloride container was used. Is rotated with a ball mill at a rotation speed of 100 to 110 rpm to stir and vibrate the leaching aqueous solution to obtain a gold leaching aqueous solution, and then iron powder is added to the gold leaching aqueous solution as a metal reducing agent, and the vinyl chloride container is further added. Is an example of collecting gold by stirring and vibrating the gold leaching aqueous solution by rotating the above method.
【００１８】図１は浸出水溶液の第２鉄イオンの含有率
と金の浸出率を示し、図２は同液のチオ尿素含有率と金
の浸出率を示し、図３は同液への金含有物の浸漬量と金
の浸出率を示し、図４は同液への金属粉として用いた鉄
粉の添加量と金の回収率を示し、図５は前記金含有物を
浸漬した時の前記浸出水溶液の攪拌及び又は振動時間と
金の浸出率を示し、図６は前記鉄粉を添加した前記浸出
水溶液の攪拌及び又は振動時間と金の回収率を示し、図
７は前記鉄粉に代えて電極板状円形薄鉄板の使用例を平
面的に示し、図８は該電極板状円形薄鉄板の表面から機
械的に金を回収する相対回転ワイパー体の使用例の概要
を平面的に示す。FIG. 1 shows the ferric ion content and gold leaching rate in the leaching aqueous solution, FIG. 2 shows the thiourea content and gold leaching rate in the same solution, and FIG. 3 shows the gold in the same solution. Fig. 4 shows the immersion amount of the inclusions and the leaching rate of gold, Fig. 4 shows the addition amount of the iron powder used as the metal powder to the same liquid, and the recovery rate of the gold, and Fig. 5 shows the results when the gold inclusions were immersed. The stirring and / or shaking time of the leaching aqueous solution and the gold leaching rate are shown, FIG. 6 shows the stirring and / or shaking time of the leaching aqueous solution to which the iron powder is added, and the gold recovery rate, and FIG. Instead, a usage example of the electrode plate-shaped circular thin iron plate is shown in plan view, and FIG. 8 is a plan view showing an overview of a usage example of the relative rotary wiper body for mechanically collecting gold from the surface of the electrode plate-shaped circular thin iron plate. Show.
【００１９】図１〜図６に明らかな通り、 1.5〜5.0 重
量％の第２鉄イオンと 2.0〜6.0 重量％のチオ尿素を含
む浸出水溶液に金含有物を金の量として 2.0ｇ／ｌ以下
を浸漬して60分以上攪拌及び又は振動すると、金含有物
の金の浸出率は90％以上に達し、又、前記金浸出水溶液
に2g／ｌ−（浸出水溶液）以上の鉄粉を添加して15分以
上攪拌及び又は振動すると、回収率が99％以上に達する
事を知見した。As is apparent from FIGS. 1 to 6, the gold content in the leaching aqueous solution containing 1.5 to 5.0% by weight of ferric ion and 2.0 to 6.0% by weight of thiourea was 2.0 g / l or less. After immersing and stirring and / or vibrating for 60 minutes or more, the gold leaching rate of the gold-containing material reaches 90% or more, and 2 g / l- (leaching aqueous solution) or more iron powder is added to the gold leaching aqueous solution. It was found that the recovery rate reaches 99% or more after stirring and / or shaking for 15 minutes or more.
【００２０】上記例は、還元剤として鉄粉を使用した
が、本発明は鉄粉に限らず、鉄粉2g／ｌ−（浸出水溶
液）の固液接触面積と同等以上の固液接触面積を有する
鉄体、例えば、図７に示す如く、固定軸１に電池の電極
板状に形成した円形薄鉄板２を設置して構成した鉄体３
を準備し、これを前記塩ビ製容器４内に固定具５で装着
固定し、該容器４と共に回転させて金含有物から金を浸
出させ、その後鉄体３の固定具５を外して該鉄体３を取
り出し、該鉄体３を軸固定装置６に固定後、図８に平面
的に示す如く、前記薄鉄板２の全表面を相対回転ワイパ
ー体７のワイパー８で挟持して後、該ワイパー８を固定
している回転軸９を回転駆動装置10（ギャードモータ
ー）で駆動し、前記薄鉄板２の表面をワイピングし、得
た共沈物に乾燥式精錬を施して金を回収する事も出来
る。In the above example, iron powder was used as the reducing agent, but the present invention is not limited to iron powder, and a solid-liquid contact area equal to or larger than the solid-liquid contact area of iron powder 2 g / l- (leaching aqueous solution) is used. An iron body having, for example, an iron body 3 configured by installing a circular thin iron plate 2 formed in a battery electrode plate shape on a fixed shaft 1 as shown in FIG.
Was prepared, and was mounted and fixed in the vinyl chloride container 4 with a fixture 5 and rotated together with the container 4 to allow gold to be leached from the gold-containing material, and then the fixture 5 of the iron body 3 was removed to remove the iron. After the body 3 is taken out and the iron body 3 is fixed to the shaft fixing device 6, the whole surface of the thin iron plate 2 is clamped by the wiper 8 of the relative rotary wiper body 7 as shown in plan view in FIG. The rotary shaft 9 fixing the wiper 8 is driven by a rotary drive device 10 (Gard motor) to wipe the surface of the thin iron plate 2, and the obtained coprecipitate is subjected to dry refining to recover gold. You can also do things.
【００２１】この方法によると、共沈物中の金の含有量
は前記例より向上し、作業は自動制御、連続制御で実施
する事が可能となり、省力が進む上、作業性、作業能率
が向上するので、金の回収費は前記例より更に低減す
る。According to this method, the content of gold in the coprecipitate is higher than that in the above example, and the work can be carried out by automatic control or continuous control, which saves labor and improves workability and work efficiency. Therefore, the gold recovery cost is further reduced than the above example.
【００２２】又、前記した他の金属体も上記例と同様に
構成して同様に使用出来る。鉄以外の金属は薄鉄板の表
面に、それぞれの金属をめっき、蒸着、爆着、張り付け
等、それ自体は公知の手段で被覆して使用する事も出来
る。又、ワイパー８の材料としては、合成樹脂製又は金
属製のブラシ或いはナイフ等が支障無く使用出来る。Further, the above-mentioned other metal bodies can also be constructed and used in the same manner as in the above example. Metals other than iron can be used by coating the surface of a thin iron plate with each metal by a known means such as plating, vapor deposition, bombardment, and sticking. Further, as the material of the wiper 8, a brush or knife made of synthetic resin or metal can be used without any trouble.
【００２３】以上は、金含有物が金めっき品の例である
が、上記例と同様にして金張り品、金含有鉱石等の金含
有物から金を浸出させた水溶液からも、上記例と同等の
作用を介して同等の効果のもとに、金を回収する事が出
来る。In the above, the gold-containing material is an example of a gold-plated product. However, in the same manner as in the above-mentioned example, an aqueous solution obtained by leaching gold from a gold-containing material such as a gold-plated product or a gold-containing ore is also used. It is possible to recover gold with the same effect through the same effect.
【００２４】[0024]
【発明の効果】本発明は、上記した手段を用いて、上記
した作用を発揮せしめるので、従来の王水による方法及
びシアン化合物による方法等の如く、危険性を伴う事な
く、安全・簡便にそれ等と同等又はそれ以上の高い回収
率で、金含有物から金を回収する事が出来る。又、特開
昭60-103138 号公報が提案するように、多量の水酸化鉄
を生成させ、金をこの水酸化鉄と共沈させる回収方法を
使用しないので、金の回収作業に当たって処理物の量が
少なく、且つ該処理物が取扱の容易な乾性を有する事か
ら、処理作業性が格段に向上すると共に、金の回収費を
大幅に低減する等この種分野へもたらす効果は極めて大
きい。INDUSTRIAL APPLICABILITY According to the present invention, the above-mentioned action can be exerted by using the above-mentioned means. Therefore, unlike the conventional method using aqua regia and the method using the cyanide compound, there is no danger, and the method is safe and simple. Gold can be recovered from gold-containing materials at a recovery rate as high as or higher than those. Further, as proposed in Japanese Patent Laid-Open No. 60-103138, since a recovery method of producing a large amount of iron hydroxide and coprecipitating gold with the iron hydroxide is not used, the product to be treated during the gold recovery work is not used. Since the amount is small and the processed material has a dry property that is easy to handle, the processing workability is remarkably improved, and the gold recovery cost is greatly reduced.
【図１】浸出水溶液の第２鉄イオンの含有率と金の浸出
率を示す。FIG. 1 shows the ferric ion content and the gold leaching rate of a leaching aqueous solution.
【図２】浸出水溶液のチオ尿素含有率と金の浸出率を示
す。FIG. 2 shows the thiourea content and the gold leaching rate of the leaching aqueous solution.
【図３】浸出水溶液への金含有物の浸漬量と金の浸出率
を示す。FIG. 3 shows the amount of gold-containing material dipped in the leaching aqueous solution and the gold leaching rate.
【図４】浸出水溶液への鉄粉の添加量と金の回収率を示
す。FIG. 4 shows the amount of iron powder added to the leaching solution and the recovery rate of gold.
【図５】金含有物を浸漬した前記浸出水溶液の攪拌及び
又は振動時間と金の浸出率の関係を示す。FIG. 5 shows the relationship between the leaching rate of gold and the stirring and / or vibration time of the leaching aqueous solution in which the gold-containing material was dipped.
【図６】鉄粉を添加した金浸出水溶液の攪拌及び又は振
動時間と金の回収率を示す。FIG. 6 shows the stirring and / or vibration time of an aqueous gold leaching solution containing iron powder and the recovery rate of gold.
【図７】鉄粉に代えて電極板状薄鉄板で構成した鉄体の
一使用例を示す平面図。FIG. 7 is a plan view showing an example of use of an iron body formed of an electrode plate-shaped thin iron plate instead of iron powder.
【図８】電極板状薄鉄板で構成した鉄体表面から機械的
に金を回収する相対回転ワイパーの使用例の概要を示す
平面図。FIG. 8 is a plan view showing an outline of an example of use of a relative rotary wiper that mechanically recovers gold from the surface of an iron body composed of an electrode plate-shaped thin iron plate.
１：固定軸 ６：軸固定装置 ２：電極板状薄鉄板 ７：相対回転ワイパー
体 ３：鉄体 ８：ワイパー ４：塩ビ容器 ９：回転軸 ５：固定具 10：回転駆動装置1: Fixed shaft 6: Shaft fixing device 2: Electrode thin iron plate 7: Relative rotation wiper body 3: Iron body 8: Wiper 4: PVC container 9: Rotation shaft 5: Fixture 10: Rotation drive device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 北坂 学 大分県大分市大字下郡3239番地−４ 大分 県工業試験場内 (72)発明者 平松 勝登 大分県大分市大字下郡3239番地−４ 大分 県工業試験場内 (72)発明者 坂原 司 大分県大分市明野南１丁目７番４号 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Manabu Kitasaka 3239, Oita-shi, Oita-shi, Oita-city 3239-4 Oita Prefectural Industrial Testing Station (72) Inventor Katsuto Hiramatsu Oita-shi, Oita-shi, Oita-shi 3239-4 Oita (72) Inventor Tsukasa Sakahara 1-7-4 Akenominami, Oita City, Oita Prefecture
Claims (2)
6.0 重量％のチオ尿素を含有する浸出水溶液に、金の量
として 2ｇ／ｌ−（浸出水溶液）以下の金含有物を浸漬
し、該浸出水溶液を60分以上攪拌及び又は振動して後、
該浸出水溶液に鉄、錫、ニッケル、カドミウム、銅、ア
ルミニウム等の金属を該金属の固液接触面積が、金属粉
2g／ｌ−（浸出水溶液）の固液接触面積と同等以上にな
る量添加又は浸漬し、該浸出水溶液を15分以上攪拌及び
又は振動する事を特徴とする金含有物から金を回収する
方法。1. A ferric ion of 1.5-5.0% by weight and 2.0-
A leaching aqueous solution containing 6.0% by weight of thiourea was dipped with a gold content of 2 g / l- (leaching aqueous solution) or less as the amount of gold, and after stirring and / or vibrating the leaching aqueous solution for 60 minutes or more,
A metal such as iron, tin, nickel, cadmium, copper or aluminum is added to the leaching aqueous solution so that the solid-liquid contact area of the metal is a metal powder.
A method for recovering gold from a gold-containing material characterized by adding or immersing 2 g / l- (leaching aqueous solution) in an amount equal to or more than a solid-liquid contact area and stirring and / or vibrating the leaching aqueous solution for 15 minutes or more. .
銅、アルミニウム等が存在する複数枚の円形金属板を軸
に貫通固定して金属体を構成し、金を浸出した水溶液に
該金属体の前記円形金属板の一部が浸漬し且つ回転可能
に該金浸出水溶液の容器に前記金属体を設けた事を特徴
とする金含有物から金を回収する装置。2. Iron, tin, nickel, cadmium,
A plurality of circular metal plates containing copper, aluminum, etc. are pierced and fixed to a shaft to form a metal body, and a part of the circular metal plate of the metal body is immersed and rotatable in an aqueous solution in which gold is leached. An apparatus for recovering gold from a gold-containing material, wherein the metal body is provided in a container for the gold leaching aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3098282A JPH0913127A (en) | 1991-04-02 | 1991-04-02 | Method for recovering gold from gold-containing material and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3098282A JPH0913127A (en) | 1991-04-02 | 1991-04-02 | Method for recovering gold from gold-containing material and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0913127A true JPH0913127A (en) | 1997-01-14 |
Family
ID=14215576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3098282A Pending JPH0913127A (en) | 1991-04-02 | 1991-04-02 | Method for recovering gold from gold-containing material and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0913127A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040032299A (en) * | 2002-10-09 | 2004-04-17 | 한국과학기술연구원 | Recovery of Gold from Gold Concentrate with Acidothioureation |
| KR100876682B1 (en) * | 2008-06-24 | 2009-01-07 | 한국지질자원연구원 | The dissolution apparatus for noble metals |
| CN105326268A (en) * | 2014-07-31 | 2016-02-17 | 青岛海高设计制造有限公司 | Storage box and storage cabinet provided with storage box |
| JP2018513279A (en) * | 2015-04-17 | 2018-05-24 | ザ ユニバーシティ オブ ブリティッシュ コロンビアＴｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｂｒｉｔｉｓｈ Ｃｏｌｕｍｂｉａ | Leaching of metal sulfides with reagents having thiocarbonyl functionality |
-
1991
- 1991-04-02 JP JP3098282A patent/JPH0913127A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040032299A (en) * | 2002-10-09 | 2004-04-17 | 한국과학기술연구원 | Recovery of Gold from Gold Concentrate with Acidothioureation |
| KR100876682B1 (en) * | 2008-06-24 | 2009-01-07 | 한국지질자원연구원 | The dissolution apparatus for noble metals |
| CN105326268A (en) * | 2014-07-31 | 2016-02-17 | 青岛海高设计制造有限公司 | Storage box and storage cabinet provided with storage box |
| JP2018513279A (en) * | 2015-04-17 | 2018-05-24 | ザ ユニバーシティ オブ ブリティッシュ コロンビアＴｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｂｒｉｔｉｓｈ Ｃｏｌｕｍｂｉａ | Leaching of metal sulfides with reagents having thiocarbonyl functionality |
| US10781502B2 (en) | 2015-04-17 | 2020-09-22 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
| JP2020153018A (en) * | 2015-04-17 | 2020-09-24 | ザ ユニバーシティ オブ ブリティッシュ コロンビアＴｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｂｒｉｔｉｓｈ Ｃｏｌｕｍｂｉａ | Use of reagent that has thiocarbonyl functional group, and methods of recovering base metals from base metal sulfides |
| US10870903B2 (en) | 2015-04-17 | 2020-12-22 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
| US10876186B2 (en) | 2015-04-17 | 2020-12-29 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
| US10876187B2 (en) | 2015-04-17 | 2020-12-29 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
| US10954583B2 (en) | 2015-04-17 | 2021-03-23 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
| US10961604B2 (en) | 2015-04-17 | 2021-03-30 | The University Of British Columbia | Process for leaching metal sulfides with reagents having thiocarbonyl functional groups |
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