JPS58210129A - Production of high-purity gold - Google Patents

Production of high-purity gold

Info

Publication number
JPS58210129A
JPS58210129A JP57092404A JP9240482A JPS58210129A JP S58210129 A JPS58210129 A JP S58210129A JP 57092404 A JP57092404 A JP 57092404A JP 9240482 A JP9240482 A JP 9240482A JP S58210129 A JPS58210129 A JP S58210129A
Authority
JP
Japan
Prior art keywords
gold
purity
soln
impurities
impure
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
Application number
JP57092404A
Other languages
Japanese (ja)
Other versions
JPH0133538B2 (en
Inventor
Susumu Takiguchi
滝口 将
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP57092404A priority Critical patent/JPS58210129A/en
Publication of JPS58210129A publication Critical patent/JPS58210129A/en
Publication of JPH0133538B2 publication Critical patent/JPH0133538B2/ja
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To produce high-purity gold having >=99.99% purity efficiently, by reducing the greater part of gold from a cyanoauric acid soln. contg. impurities with a reducing agent and filtering the same, reducing the remaining gold together with the impurities, mixing the resulted impure gold with the above-mentioned soln. and melting the same. CONSTITUTION:A reducing agent such as Al is added to a cyanoauric acid soln. contg. impurities such as silver, copper, Ni, Pt or the like to reduce the greater part of gold. The reduction curve 2 of impurities in this case rises sharply when the rate of reduction in a reduction curve 1 for gold exceeds 95% as shown in the figure; therefore, the reduction is stopped just before the curve rises. The greater part of high-purity gold having >=99.99% purity is filtered and recovered from said soln., whereafter the impure gold is fully reduced from the soln. contg. gold in a decreased concn., to obtain impure gold. The impure gold is then remelted to prepare a cyanoauric acid soln. Said soln. is mixed with the next cyanoauric acid soln. and the soln. is subjected again to the reduction treatment. Gold having high purity is recovered in succession by repeating the above-mentioned operations.

Description

【発明の詳細な説明】 本発明は高純度金の製造方法に関するもので、特にシア
ン化金酸溶液から純度の高い金を効率よく製造する方法
であり、銀、銅、ニッケル、鉄。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing high-purity gold, and in particular a method for efficiently producing high-purity gold from a cyanauric acid solution, including silver, copper, nickel, and iron.

白金、パラジウム等々金以外の元素を含む溶液から純度
99.99%以上の高純度の金を製造する方法である。
This is a method for producing high-purity gold with a purity of 99.99% or more from a solution containing elements other than gold, such as platinum and palladium.

一般的に純度99.99%以上の高純度の金はウオール
ウィル法として知られる電解精製法が用いられているが
、この電解精製法は通常40〜80g(1) /eの金を含有する電解液や高純度の陰極用金板が必要
であり、また電解液中の不純物等液管理も必要で高純度
の金を製造する5Fで効率的に欠点が′ある。他方、金
のシアン化金酸の溶液を還元剤で還元する方法としては
、亜鉛、コノゲル。アルミニウム等の金属を用いて還九
場る方法が知られている。しかしながら、還元剤で’1
A7cする方法は金の還2cと同時に他の不純物も還元
されるため純度99.99%以上の高純度金を製造する
ことができなかった。
Generally, high-purity gold with a purity of 99.99% or higher is produced using an electrolytic refining method known as the wall will method, but this electrolytic refining method usually contains 40 to 80 g(1)/e of gold. It requires an electrolytic solution and a high-purity gold plate for the cathode, and also requires liquid management such as impurities in the electrolytic solution, which is a disadvantage in terms of efficiency in producing high-purity gold at 5F. On the other hand, as a method for reducing a solution of gold cyanide and auric acid using a reducing agent, zinc and conogel are used. A method is known that uses a metal such as aluminum. However, with reducing agent '1
In method A7c, other impurities are also reduced at the same time as gold is reduced, so it was not possible to produce high purity gold with a purity of 99.99% or higher.

本発明材は、上記欠点に鑑み鋭意攻究の結果、効率的に
高純度の金を製造する方法を見出したものである。
The material of the present invention was created as a result of intensive research in view of the above-mentioned drawbacks and the discovery of a method for efficiently producing high-purity gold.

本発明は、不純物を含有するシアン化金酸溶液から高純
度金を製造する方法に才、いて、・大部分の金を還元剤
で還元ろ別した後残りの金を不純物とともに還元して不
純金とし、その後その不純金をシアン化金酸として溶解
して次のジrン化金酸溶液に混入することを特徴とする
高純度金の製造方法である。
The present invention provides a method for producing high-purity gold from a cyanauric acid solution containing impurities. After most of the gold is reduced and filtered out using a reducing agent, the remaining gold is reduced together with the impurities to make it impure. This is a method for producing high-purity gold, which is characterized in that the impure gold is made into pure gold, and then the impure gold is dissolved as cyanauric acid and mixed into the subsequent cyanauric acid solution.

(2) 本発明は、還元剤で還元するときシアン化金酸溶液中で
はまず金が先に還元しその後不純物が急激に還元される
ことにもとづくものである。4′なわち、第1図におい
て金の還元曲線lはほぼ還元剤の添加量に比例し゛C還
元されるが、不純物の還元曲線2は金の還元量が95%
を越えると急激に立ちあがる。したがって、純度99.
99%以上の高純度金を製造するには不純物許容量がO
,O1%思1・と極めて少ないため立ちあがる直前でや
める必要がある。本発明において大部分の金を還元ろ別
し。
(2) The present invention is based on the fact that when reducing with a reducing agent, gold is reduced first in a cyanauric acid solution, and then impurities are rapidly reduced. 4' In other words, in Figure 1, the gold reduction curve 1 shows that the amount of gold reduced is approximately proportional to the amount of reducing agent added, but the impurity reduction curve 2 shows that the amount of gold reduced is 95%.
When it exceeds , it rises rapidly. Therefore, the purity is 99.
To produce high purity gold of 99% or higher, the impurity tolerance is O.
, 1%, which is extremely low, so it is necessary to stop just before standing up. In the present invention, most of the gold is separated by reduction filtration.

てまず高純度金をうる。そして、濃度′の躊くなった溶
液から金をすべて還元し゛(不純金をうる。その後不純
金を再溶解してシアン化金酸溶液を得、これを久のシア
ン化金酸溶液に混入する。不純物の還元曲線2は不純物
の種類や濃度等により定まるが、金の還元曲線lがほは
直線のためあらか(7め還元剤の添加量を想定すること
により還元される不純物の量を限ることができる。した
がって、連続して本発明のM遣方法を実施しても、不純
物の濃度が蓄積して増加することもない。
First, obtain high-purity gold. Then, all the gold is reduced from the solution whose concentration has decreased (to obtain impure gold. After that, the impure gold is redissolved to obtain a cyanide-auric acid solution, and this is mixed into the cyanide-auric acid solution. The reduction curve 2 of impurities is determined by the type and concentration of impurities, but since the reduction curve 1 of gold is almost a straight line, the amount of impurities reduced can be calculated by assuming the amount of reducing agent added. Therefore, even if the method for applying M according to the present invention is carried out continuously, the concentration of impurities will not accumulate and increase.

(3) 以ト、実施例と従来例につい(説明する。(3) Examples and conventional examples will be explained below.

〔実施例1〕 金を75%含冑する装飾品のくず5 kgをシアン化カ
リウム溶液に溶解しIf!の金含自溶液をえた。この溶
液にアルミニウム336 gを添加し大部分の金を還元
した。このときの1澄液を分析したところ金の濃度は3
.1g/j!であった。また、還元した金をろ別洗浄乾
燥したところ、3673.41!の金粉をえた。この金
粉の純度を分析したところ99.996%の純度であっ
た。一方、U:Ki液をさらにアルミニウム8gで還元
したところ、73.4[の金粉をえた。これを分析した
ところ99.70%であった。以上のごとく、本発明の
製造方法によれば99.996%の高純度の金が98%
の収率で製造することができた。
[Example 1] 5 kg of ornamental scraps containing 75% gold were dissolved in a potassium cyanide solution and the If! A gold-containing solution was obtained. 336 g of aluminum was added to this solution to reduce most of the gold. When one clear liquid was analyzed, the gold concentration was 3.
.. 1g/j! Met. In addition, when the reduced gold was filtered, washed and dried, it turned out to be 3673.41! I got gold powder. When the purity of this gold powder was analyzed, it was found to be 99.996% pure. On the other hand, when the U:Ki solution was further reduced with 8 g of aluminum, 73.4 gold powder was obtained. When this was analyzed, it was 99.70%. As described above, according to the manufacturing method of the present invention, gold with a high purity of 99.996% can be produced with a purity of 98%.
could be produced with a yield of .

〔従来例1〕 実施例1と同様な溶液にアルミニウム344gを加え金
を完全に還元析出さセた。ごの還元した金をろ別洗浄乾
燥したところ3747.4gの金粉i!また。
[Conventional Example 1] 344 g of aluminum was added to the same solution as in Example 1 to completely reduce and precipitate gold. When the reduced gold was filtered, washed and dried, it yielded 3747.4g of gold powder. Also.

この金粉を分析したところ純度は99.97%であっ(
4) た。このときの金の回収率は99.9V6であった。
When this gold powder was analyzed, the purity was 99.97% (
4) Ta. The gold recovery rate at this time was 99.9V6.

〔実施例2〕 金99.62%、銅0.34%、紐0,03%その他微
量の鉄やパラジウムなどを含有する粗金5 kgをン゛
J′ン化ナトリウム水溶液に溶解し18Rの熔坂をえた
[Example 2] 5 kg of crude gold containing 99.62% gold, 0.34% copper, 0.03% string and other trace amounts of iron and palladium was dissolved in an aqueous solution of sodium chloride. I got a hotspot.

この液を9Eづつ分割した後一方の液に助船823gを
添加したところ2477.2gの金粉をえた。この金粉
の純度を分析したところ99.992%の純度であった
This liquid was divided into 9E portions, and 823g of auxiliary ship was added to one of the liquids, yielding 2477.2g of gold powder. When the purity of this gold powder was analyzed, it was found to be 99.992% pure.

〔従来例2〕 他方の91!の液に亜鉛832gを添加したところ25
00.6gの金粉をえた。この金粉を分析したところ9
9.94%の純度であった。
[Conventional Example 2] The other 91! When 832g of zinc was added to the solution, 25
Obtained 00.6g of gold powder. When this gold powder was analyzed, 9
The purity was 9.94%.

以上のごとく、本発明の製造方法によれば99.992
%の純度の金が99%の収率で製造4ることができた。
As described above, according to the manufacturing method of the present invention, 99.992
Gold with a purity of 4% could be produced with a yield of 99%.

以上詳述したように本発明の製造方法に、Lれば純度9
9.99%以上の高純度の金を不純物のLI4度によら
ず効率よく製造でき、しかもくり返し実施し。
As detailed above, in the production method of the present invention, if L is 9.
High-purity gold of 9.99% or higher can be efficiently produced regardless of the LI4 degree of impurities, and it can be repeatedly produced.

でも不純物の濃度が艙積されていかないといつj(5) ぐれた〃J果がある。However, if the concentration of impurities does not accumulate, then There is a stray J result.

【図面の簡単な説明】[Brief explanation of drawings]

弟1図は還元剤の添加量に対する金と不純物の含有量を
示す図である。 l −金の還元曲線、2− 不純物の還ノし曲線出願人
  ul中貴金属工業株式会社 (6)
Figure 1 is a diagram showing the content of gold and impurities relative to the amount of reducing agent added. l - Reduction curve of gold, 2 - Reduction curve of impurities Applicant: UL Naka Kikinzoku Kogyo Co., Ltd. (6)

Claims (1)

【特許請求の範囲】[Claims] 不純物を含有するシアン化金酸溶液から高純度金を製造
する方法において、大部分の還元剤で還元ろ別した後残
りの金を不純物とともに還元して不純金とし、その後そ
の不純金をシアン化金酸として溶解して次のシアン化金
酸溶液に混入することを特徴とする高純度金の製造方法
In a method for producing high-purity gold from a cyanide-auric acid solution containing impurities, most of the gold is reduced and filtered using a reducing agent, the remaining gold is reduced together with impurities to make impure gold, and then the impure gold is cyanated. A method for producing high-purity gold, characterized by dissolving it as gold acid and mixing it into a subsequent cyanide-auric acid solution.
JP57092404A 1982-05-31 1982-05-31 Production of high-purity gold Granted JPS58210129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57092404A JPS58210129A (en) 1982-05-31 1982-05-31 Production of high-purity gold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57092404A JPS58210129A (en) 1982-05-31 1982-05-31 Production of high-purity gold

Publications (2)

Publication Number Publication Date
JPS58210129A true JPS58210129A (en) 1983-12-07
JPH0133538B2 JPH0133538B2 (en) 1989-07-13

Family

ID=14053473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57092404A Granted JPS58210129A (en) 1982-05-31 1982-05-31 Production of high-purity gold

Country Status (1)

Country Link
JP (1) JPS58210129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015151582A (en) * 2014-02-14 2015-08-24 田中貴金属工業株式会社 Method for recovering gold or silver from gold or silver-containing cyanogen-based waste fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015151582A (en) * 2014-02-14 2015-08-24 田中貴金属工業株式会社 Method for recovering gold or silver from gold or silver-containing cyanogen-based waste fluid

Also Published As

Publication number Publication date
JPH0133538B2 (en) 1989-07-13

Similar Documents

Publication Publication Date Title
JP4207959B2 (en) Method for separating and purifying high-purity silver chloride and method for producing high-purity silver using the same
JPH09208222A (en) Production of high purity rare earth metal oxide
JPS58210129A (en) Production of high-purity gold
KR20090106067A (en) Precious metal collection method from scrap metals by dental technician
US4155750A (en) Recovery and purification of rhodium
US4314976A (en) Purification of nickel sulfate
JP4842426B2 (en) Method for producing high purity silver
JPH08260065A (en) Method for fractionating and recovering noble metal from noble metal-containing material
JP3753554B2 (en) Silver recovery method
JPS55164042A (en) Method of separating and recovering platinum from platinum plating waste liquid
JPS58210130A (en) Manufacture of high-purity gold
JPH10226828A (en) Method for refining rhodium from rhodium-containing precipitate
JP3666337B2 (en) How to recover palladium
JP3837879B2 (en) Method for reducing and precipitating metal ions
CN108467947A (en) A kind of processing method of high bismuth noble metal concentrate
JPS5884934A (en) Recovering method for palladium
EP0073108A1 (en) A process for the recovery of metals
JP3286212B2 (en) Method for purifying gold electrolyte containing Pd
JPS643930B2 (en)
JPS6035290B2 (en) Palladium purification and recovery method
JPH0443966B2 (en)
JPH10251701A (en) Production of high purity silver powder
JPH11229053A (en) Production of high purity gold
JPH0657348A (en) Production of high-purity gold
JP2010163664A (en) Method of separating rhodium and copper