JP2002030359A - Method for separating and recovering copper of the like and bismuth from cuprous oxide and bismuth-containing object to be treated - Google Patents
Method for separating and recovering copper of the like and bismuth from cuprous oxide and bismuth-containing object to be treatedInfo
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- JP2002030359A JP2002030359A JP2000217196A JP2000217196A JP2002030359A JP 2002030359 A JP2002030359 A JP 2002030359A JP 2000217196 A JP2000217196 A JP 2000217196A JP 2000217196 A JP2000217196 A JP 2000217196A JP 2002030359 A JP2002030359 A JP 2002030359A
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- Japan
- Prior art keywords
- bismuth
- copper
- leaching
- sulfuric acid
- arsenic
- Prior art date
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- 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、非鉄製錬工程等で発生
する酸化第一銅及びビスマスを含む処理対象物例えばア
ルカリ処理をした電解沈殿銅から、有価物を分離回収す
る方法に関するものであり、更に詳しく述べると有価物
であるビスマスを銅等と湿式処理により分離し回収する
方法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 for separating and recovering valuable resources from an object to be treated containing cuprous oxide and bismuth generated in a non-ferrous smelting process or the like, for example, electrolytically treated electrolytically precipitated copper. More specifically, the present invention relates to a method of separating and recovering bismuth, which is a valuable resource, from copper or the like by wet processing.
【０００２】[0002]
【従来の技術】砒素、アンチモン、ビスマスのいわゆる
５族元素は、鉛、銅、錫、銀、金などの鉱石中に含ま
れ、これらの非鉄金属の製錬副産物として産出されてい
る。砒素、アンチモン、ビスマスは、銅や鉛鉱石に随伴
して産出されることが多く、乾式製錬によってその粗金
属中に残留する。例えば、粗銅中に残留した砒素、アン
チモン、ビスマスは、銅の電解精製工程において他の不
純物と共に電解液に濃縮される。一方大部分の砒素、ア
ンチモン、ビスマスは、銅製錬の乾式工程で高熱によっ
て揮発し、煙灰として鉛、砒素、アンチモンなどと共に
コットレル等に捕集され、これらは更に鉛製錬工程に送
られ分離回収される。2. Description of the Related Art Arsenic, antimony and bismuth, so-called Group V elements, are contained in ores such as lead, copper, tin, silver and gold, and are produced as by-products of smelting of these nonferrous metals. Arsenic, antimony, and bismuth are often produced in association with copper and lead ore, and remain in the crude metal by dry smelting. For example, arsenic, antimony, and bismuth remaining in the blister copper are concentrated together with other impurities in the electrolytic solution in the electrolytic copper refining process. On the other hand, most of arsenic, antimony, and bismuth are volatilized by high heat in the copper smelting dry process, and are collected as smoke ash together with lead, arsenic, antimony, etc. in cotrels, etc., which are sent to the lead smelting process and separated and recovered. Is done.
【０００３】銅電解液中に濃縮された砒素、アンチモ
ン、ビスマスは、例えばイオン交換樹脂や脱銅電解で除
去される。脱銅電解で発生した殿物が電解沈殿銅と呼ば
れており、砒素、アンチモン、ビスマスが濃縮されてい
る。[0003] Arsenic, antimony and bismuth concentrated in a copper electrolyte are removed by, for example, an ion exchange resin or copper removal electrolysis. The deposit generated by the copper removal electrolysis is called electrolytic precipitated copper, and arsenic, antimony, and bismuth are concentrated.
【０００４】電解沈殿銅中には砒素が含まれており、こ
の砒素の安定化処理が困難であり、多くの場合貯蔵され
ている。また電解沈殿銅には砒素、アンチモン、ビスマ
スの他に有価物である銅が多量に含まれており、有価物
回収の観点から貯蔵には問題がある。[0004] The electrolytically precipitated copper contains arsenic, which is difficult to stabilize, and is often stored. In addition, electrolytically precipitated copper contains a large amount of valuable copper in addition to arsenic, antimony and bismuth, and there is a problem in storage from the viewpoint of recovering valuable resources.
【０００５】また砒素、アンチモン、ビスマスは挙動を
共にすることが多く、これらの分離も課題となってい
る。[0005] In addition, arsenic, antimony and bismuth often act together, and their separation is also an issue.
【０００６】[0006]
【発明が解決しようとする課題】上記問題点を解決す
る、湿式法によるビスマスと銅等を分離し、有価物であ
るビスマスを回収する方法を提供するものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for separating bismuth and copper by a wet method and recovering bismuth which is a valuable resource, which solves the above problems.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、酸化第一
銅及びビスマスを含む処理対象物例えばアルカリ処理を
した電解沈殿銅からの銅等とビスマスの分離回収方法の
種々の検討を行った結果、分離回収方法として、 （１）酸化第一銅及びビスマスを含む処理対象物を１段
階目の浸出として５０〜２００ｇ／Ｌ以下の硫酸で浸出
し、銅、砒素、ニッケル等を溶出させた後、２段階目の
浸出として該硫酸浸出残渣を２〜３Ｍ／Ｌ以上の塩酸で
浸出し、ビスマスを溶出させることにより、銅等とビス
マスを分離し回収することを特徴とする酸化第一銅及び
ビスマスを含む処理対象物から銅等とビスマスの分離回
収方法。 （２）硫酸浸出の条件が、液温４０℃以上、処理時間２
時間以上、パルプ濃度９０ｄｒｙ−ｇ／Ｌ以下であるこ
とを特徴とする（１）に記載の方法。 （３）塩酸浸出の条件が、液温２０℃以上、処理時間１
時間以上、パルプ濃度７５ｄｒｙ−ｇ／Ｌ以下であるこ
とを特徴とする（１）に記載の方法。 （４）上記（１）記載の塩酸処理後の処理液をｐＨ＝２
〜３とし、ビスマスを残渣中に回収することを特徴とす
る請求項１記載の方法。 を提供する。Means for Solving the Problems The present inventors have conducted various studies on a method for separating and recovering bismuth and copper or the like from an object to be treated containing cuprous oxide and bismuth, for example, electrolytically precipitated copper subjected to alkali treatment. As a result, as a separation and recovery method, (1) a treatment target containing cuprous oxide and bismuth is leached with sulfuric acid of 50 to 200 g / L or less as a first stage leaching to elute copper, arsenic, nickel, etc. Then, as a second stage of leaching, the sulfuric acid leaching residue is leached with hydrochloric acid of 2 to 3 M / L or more to elute bismuth, thereby separating and collecting bismuth from copper or the like. A method for separating and recovering copper or the like and bismuth from a processing object containing copper and bismuth. (2) Sulfuric acid leaching conditions are at a liquid temperature of 40 ° C. or more, and a
The method according to (1), wherein the pulp concentration is 90 dry-g / L or less for at least an hour. (3) Hydrochloric acid leaching conditions are at a liquid temperature of 20 ° C or higher, and a processing time of 1
The method according to (1), wherein the pulp concentration is 75 dry-g / L or less for at least an hour. (4) The treatment solution after the hydrochloric acid treatment described in the above (1) is pH = 2
The method according to claim 1, wherein bismuth is recovered in the residue. I will provide a.
【作用】以下本発明の構成を詳しく説明する。なお構成
は例を挙げて説明しているが、本発明はこの例に制限さ
れるものではない。The structure of the present invention will be described below in detail. Although the configuration has been described using an example, the present invention is not limited to this example.
【０００８】砒素、アンチモン、ビスマスのいわゆる５
族元素は、鉛、銅、錫、銀、金などの鉱石中に含まれ、
これらの非鉄金属の製錬副産物として産出されている。
砒素、アンチモン、ビスマスは、銅や鉛鉱石に随伴して
産出されることが多く、乾式製錬によってその粗金属中
に残留する。例えば、粗銅中に残留した砒素、アンチモ
ン、ビスマスは、銅の電解精製工程において他の不純物
と共に電解液に濃縮される。一方大部分の砒素、アンチ
モン、ビスマスは、銅製錬の乾式工程で高熱によって揮
発し、煙灰として鉛、砒素、アンチモンなどと共にコッ
トレル等に捕集され、これらは更に鉛製錬工程に送られ
分離回収される。The so-called 5 of arsenic, antimony and bismuth
Group elements are found in ores such as lead, copper, tin, silver and gold,
It is produced as a by-product of smelting these nonferrous metals.
Arsenic, antimony, and bismuth are often produced in association with copper and lead ore, and remain in the crude metal by dry smelting. For example, arsenic, antimony, and bismuth remaining in the blister copper are concentrated together with other impurities in the electrolytic solution in the electrolytic copper refining process. On the other hand, most of arsenic, antimony, and bismuth are volatilized by high heat in the copper smelting dry process, and are collected as fumes along with lead, arsenic, antimony, etc. in cotrels and the like. Is done.
【０００９】銅電解液中に濃縮された砒素、アンチモ
ン、ビスマスは、例えばイオン交換樹脂や脱銅電解で除
去される。この脱銅電解で発生した殿物が電解沈殿銅と
呼ばれており、銅、砒素、アンチモン、ビスマスが濃縮
されている。Arsenic, antimony, and bismuth concentrated in the copper electrolyte are removed by, for example, an ion exchange resin or copper removal electrolysis. The deposit generated by this copper removal electrolysis is called electrolytic precipitated copper, and copper, arsenic, antimony, and bismuth are concentrated.
【００１０】電解沈殿銅中には砒素が含まれており、こ
の砒素の安定化処理が困難なため、多くの場合貯蔵され
ている。また電解沈殿銅には砒素、アンチモン、ビスマ
スの他に有価物である銅が多量に含まれており、有価物
回収の観点から貯蔵には問題がある。The electrolytically precipitated copper contains arsenic, which is often stored because it is difficult to stabilize the arsenic. In addition, electrolytically precipitated copper contains a large amount of valuable copper in addition to arsenic, antimony and bismuth, and there is a problem in storage from the viewpoint of recovering valuable resources.
【００１１】本発明者らは、酸化第一銅及びビスマスを
含む処理対象物例えばアルカリ処理をした電解沈殿銅か
らの銅等とビスマスの分離回収の種々の検討を行った結
果、アルカリ浸出をした電解沈殿銅を硫酸浸出して銅、
砒素、ニッケルを溶出させた後、浸出残渣を塩酸浸出し
ビスマスを溶出させることによりビスマスと銅等との分
離ができるとの知見を得た。The present inventors have conducted various studies on the separation and recovery of copper and the like and bismuth from an object to be treated containing cuprous oxide and bismuth, for example, electrolytically treated copper which has been subjected to alkali treatment, and as a result, the leaching of alkali has been achieved. Sulfuric acid leaching of electrolytically precipitated copper, copper,
After eluting arsenic and nickel, it was found that bismuth can be separated from copper and the like by leaching the leaching residue with hydrochloric acid and leaching bismuth.
【００１２】すなわちアルカリ処理をした電解沈殿銅を
硫酸で浸出すると銅、砒素、ニッケルの大部分が浸出さ
れる。このときビスマスは浸出されず残渣に残留濃縮す
る。このアルカリ処理をした電解沈殿銅中の銅の形態
は、アルカリ処理により酸化第一銅に変換されており、
この酸化第一銅は硫酸に容易に溶解する。このため、銅
とビスマスの分離が効率よく行われる。アルカリ処理後
の電解沈殿銅品位は、例えばビスマス１〜１０％、銅５
０〜７０％、砒素１〜１０％、ニッケル１〜１０％であ
る。この硫酸浸出残渣を塩酸で浸出することにより、ビ
スマスが溶出するため銅等とビスマスの分離が可能であ
ることを見い出した。That is, when electrolytically precipitated copper subjected to alkali treatment is leached with sulfuric acid, most of copper, arsenic and nickel are leached. At this time, bismuth is not leached, but remains concentrated in the residue. The form of copper in the electrolytically treated copper subjected to the alkali treatment has been converted to cuprous oxide by the alkali treatment,
This cuprous oxide readily dissolves in sulfuric acid. Therefore, the separation of copper and bismuth is performed efficiently. The quality of electrolytically precipitated copper after alkali treatment is, for example, 1-10% of bismuth and 5% of copper.
0-70%, arsenic 1-10%, nickel 1-10%. By leaching the sulfuric acid leaching residue with hydrochloric acid, bismuth is eluted, and it has been found that bismuth can be separated from copper or the like.
【００１３】硫酸で浸出された銅、砒素、ニッケルの回
収は、例えば中和処理が適用可能である。ここで発生し
た中和残渣は非鉄金属製錬の乾式工程に繰返すことが可
能である。また浸出液は、液中に硫酸が残留しているた
め、再度硫酸浸出工程へ繰返すことが可能である。For the recovery of copper, arsenic and nickel leached with sulfuric acid, for example, a neutralization treatment can be applied. The neutralized residue generated here can be repeated in the dry process of nonferrous metal smelting. Further, since the sulfuric acid remains in the leaching solution, the leaching solution can be repeated to the sulfuric acid leaching step again.
【００１４】硫酸濃度が高くなるとＢｉが浸出されるた
め、硫酸濃度は５０〜２００ｇ／Ｌ、さらに詳細に述べ
ると８０から１００ｇ／Ｌが好ましい。この時の硫酸浸
出後液中の硫酸濃度は約２０ｇ／Ｌ程度であり、硫酸濃
度を調整した後再度硫酸浸出に繰返すことが可能であ
る。また硫酸浸出後液のブリードオフ時、硫酸濃度が比
較的低いため、中和処理による銅等の有価物回収が容易
に行えるメリットもある。As the sulfuric acid concentration increases, Bi is leached out. Therefore, the sulfuric acid concentration is preferably 50 to 200 g / L, more specifically 80 to 100 g / L. At this time, the sulfuric acid concentration in the solution after sulfuric acid leaching is about 20 g / L, and the sulfuric acid leaching can be repeated after adjusting the sulfuric acid concentration. Further, since the sulfuric acid concentration is relatively low at the time of bleeding off the solution after sulfuric acid leaching, there is an advantage that it is possible to easily recover valuable materials such as copper by neutralization.
【表１】 [Table 1]
【００１５】硫酸浸出の処理時間は、２時間以上更に詳
しく述べると３〜５時間が好ましい。処理時間が短いと
特に銅の浸出率が低くなる。処理時間が5時間を超える
とBiが溶出する傾向であるため好ましくない。The treatment time of the sulfuric acid leaching is preferably 2 hours or more, more preferably 3 to 5 hours. If the treatment time is short, the leaching rate of copper is particularly low. If the treatment time exceeds 5 hours, Bi tends to elute, which is not preferable.
【表２】 [Table 2]
【００１６】硫酸処理の液温が低いと銅の浸出率が低く
なるため、銅等とビスマスの分離は困難となる。液温は
４０℃以上、更に詳しく述べると５５〜６５℃が好まし
い。液温が６０℃より高いと、銅の浸出率はさほど上昇
せず熱エネルギーのロスとなるため好ましくない。If the liquid temperature of the sulfuric acid treatment is low, the leaching rate of copper becomes low, so that it becomes difficult to separate bismuth from copper or the like. The liquid temperature is preferably 40 ° C. or more, and more preferably 55 to 65 ° C. When the liquid temperature is higher than 60 ° C., the leaching rate of copper does not increase so much and heat energy is lost, which is not preferable.
【表３】 [Table 3]
【００１７】硫酸浸出のパルプ濃度が上昇するとCu、A
s、Niの浸出率が低下しBiとの分離が困難となる。パル
プ濃度は９０ｄｒｙ−ｇ／Ｌ以下、さらに詳しく述べる
と４０〜７０ｄｒｙ−ｇ／Ｌが好ましい。As the pulp concentration of sulfuric acid leaching increases, Cu, A
The leaching rate of s and Ni decreases, and separation from Bi becomes difficult. The pulp concentration is preferably 90 dry-g / L or less, more preferably 40 to 70 dry-g / L.
【表４】 [Table 4]
【００１８】硫酸浸出で得られた残渣はビスマスが主成
分であり、ビスマスの形態は酸化ビスマスと考えられ
る。このビスマス化合物は、酸類、例えば塩酸に溶解す
る。The residue obtained by sulfuric acid leaching is mainly composed of bismuth, and the form of bismuth is considered to be bismuth oxide. This bismuth compound dissolves in acids, for example, hydrochloric acid.
【００１９】塩酸浸出の塩酸濃度は２〜３モル／Ｌ以上
が好ましい。塩酸濃度が薄いとビスマス浸出率が上がら
ない。The hydrochloric acid concentration in the hydrochloric acid leaching is preferably 2 to 3 mol / L or more. When the concentration of hydrochloric acid is low, the leaching rate of bismuth does not increase.
【表５】 [Table 5]
【００２０】塩酸溶解の液温は、２０℃以上更に詳しく
述べると５５〜６５℃が好ましい。The temperature of the solution for dissolving hydrochloric acid is preferably at least 55.degree.
【表６】 [Table 6]
【００２１】塩酸浸出の浸出時間は、１時間以上更に詳
しく述べると2時間以上が好ましい。The leaching time of hydrochloric acid leaching is preferably 1 hour or more, and more preferably 2 hours or more.
【表７】 [Table 7]
【００２２】塩酸浸出のパルプ濃度は、７５ｄｒｙ−ｇ
／Ｌ以下、更に詳しく述べると４５〜６０ｄｒｙ−ｇ／
Ｌが好ましい。パルプ濃度が高いとＢｉ浸出率が低下す
る。The pulp concentration of the hydrochloric acid leaching is 75 dry-g
/ L or less, more specifically, 45-60 dry-g /
L is preferred. If the pulp concentration is high, the Bi leaching rate decreases.
【表８】 [Table 8]
【００２３】塩酸浸出されたビスマスの回収方法は、例
えば加水分解法の適用が可能である。この加水分解法
は、含ビスマス塩酸溶液のｐHを上げていくとBiが加水
分解を起こしオキシ塩化ビスマス（BiOCl）として回収
する方法である。As a method for recovering bismuth leached with hydrochloric acid, for example, a hydrolysis method can be applied. In this hydrolysis method, Bi is hydrolyzed as the pH of the bismuth-containing hydrochloric acid solution is increased, and is recovered as bismuth oxychloride (BiOCl).
【００２４】本発明により、アルカリ処理をした電解沈
殿銅から銅等とビスマスを分離回収することが可能とな
った。According to the present invention, it has become possible to separate and recover copper and the like and bismuth from electrolytically precipitated copper subjected to alkali treatment.
【００２５】以上説明したように、銅等とビスマスとを
分離する簡便な方法を確立した。As described above, a simple method for separating copper and the like from bismuth has been established.
【００２６】以下本発明の実施例を説明する。なお本発
明は実施例に限定されるものではない。An embodiment of the present invention will be described below. Note that the present invention is not limited to the embodiments.
【００２７】銅製錬工程中間処理物として産出されるア
ルカリ処理をした電解沈殿銅の組成は表の通りである。
この電解沈殿銅中の銅の形態は酸化第一銅である。The composition of the alkali-treated electrolytically precipitated copper produced as an intermediate in the copper smelting process is as shown in the table.
The form of copper in the electrolytically precipitated copper is cuprous oxide.
【００２８】[0028]
【表９】 [Table 9]
【００２９】電解沈殿銅９６０ｗｅｔ−ｇを硫酸濃度８
０ｇ／Ｌの液１２Ｌにリパルプし、６０℃4ｈｒ攪拌放
置後、固液分離を行った。このとき残渣は３３９ｗｅｔ
−ｇ（付着水分３４．５％）得られた。分析値を表１０
に示す。The electrolytically precipitated copper (960 wet-g) was converted to a sulfuric acid concentration of 8
The pulp was repulped to 12 L of a 0 g / L solution, left at 60 ° C. with stirring for 4 hours, and then subjected to solid-liquid separation. At this time, the residue is 339 wet
-G (34.5% of attached moisture) was obtained. Table 10 shows the analysis values.
Shown in
【００３０】[0030]
【表１０】 [Table 10]
【００３１】硫酸浸出残渣２４０ｗｅｔ−ｇを常温の２
モル／Ｌ塩酸溶液３Ｌにリパルプした。1時間のリパル
プ後、濾過による固液分離を実施し、１６７．７ｗｅｔ
−ｇ（付着水分５３．２％）の残渣を得た。The sulfuric acid leaching residue (240 wet-g) was added at room temperature to 2
It was repulped to 3 L of a mol / L hydrochloric acid solution. After 1 hour of repulp, solid-liquid separation by filtration was carried out, and 167.7 wet
A residue of -g (adhered water 53.2%) was obtained.
【００３２】[0032]
【表１１】 [Table 11]
【００３３】６０℃に加温した塩酸浸出後液２．９Ｌに
２００ｇ／ＬのＮａＯＨ０．９８Ｌを添加し、ｐＨ２．
２５とし４時間攪拌放置した。その後固液分離を実施
し、２７．４ｗｅｔ−ｇ（付着水分５８．５％）の残渣
を得た。この残渣の品位を表に示す。To 2.9 L of the hydrochloric acid leached solution heated to 60 ° C., 0.98 L of 200 g / L NaOH was added, and the pH of the solution was adjusted to pH 2.
It was set to 25 and left to stir for 4 hours. Thereafter, solid-liquid separation was performed to obtain a residue of 27.4 wet-g (attached moisture: 58.5%). The quality of this residue is shown in the table.
【表１２】 [Table 12]
【００３４】アルカリ処理を行っていない電解沈殿銅１
６．４ｄｒｙ−ｇを８０ｇ／Ｌの硫酸０．２５Ｌにリパ
ルプし、６０℃×４ｈｒ攪拌放置した。その後、固液分
離を実施し、浸出率を算出した結果、次のようになっ
た。表１に示す銅の浸出率８５％以上に比べ、８．２％
と比べはるかに悪い値であり、銅、ビスマスの効率的分
離回収が不可能であった。Electrolytically precipitated copper 1 not subjected to alkali treatment
The 6.4 dry-g was repulped in 80 g / L sulfuric acid 0.25 L, and left to stir at 60 ° C. × 4 hr. Thereafter, solid-liquid separation was performed, and the leaching rate was calculated. As a result, the result was as follows. 8.2% compared to the copper leaching rate of 85% or more shown in Table 1.
The value was much worse than that of the above, and efficient separation and recovery of copper and bismuth was impossible.
【表１３】 [Table 13]
【００３５】[0035]
【発明の効果】以上説明したように、本発明により電解
沈殿銅から有価物であるビスマスと銅等とを分離回収す
ることが可能となった。As described above, according to the present invention, it has become possible to separate and recover bismuth and copper, which are valuable substances, from electrolytically precipitated copper.
【図１】は、本発明の処理フローの一態様を示す。FIG. 1 shows one embodiment of the processing flow of the present invention.
Claims (4)
を１段階目の浸出として５０〜２００ｇ／Ｌの硫酸で浸
出し、銅、砒素、ニッケル等を溶出させた後、２段階目
の浸出として該硫酸浸出残渣を２〜３Ｍ／Ｌの塩酸で浸
出し、ビスマスを溶出させることを特徴とする酸化第一
銅及びビスマスを含む処理対象物から銅等とビスマスの
分離回収方法。An object to be treated containing cuprous oxide and bismuth is leached with 50 to 200 g / L sulfuric acid as a first stage leaching to elute copper, arsenic, nickel, etc., and then a second stage leaching is performed. A method for separating and recovering copper or the like and bismuth from a treatment object containing cuprous oxide and bismuth, wherein the sulfuric acid leaching residue is leached with 2-3 M / L hydrochloric acid as leaching to elute bismuth.
時間２時間以上、パルプ濃度９０ｄｒｙ−ｇ／Ｌ以下で
あることを特徴とする請求項１に記載の方法。2. The method according to claim 1, wherein the conditions of sulfuric acid leaching are a liquid temperature of 40 ° C. or more, a treatment time of 2 hours or more, and a pulp concentration of 90 dry-g / L or less.
時間１時間以上、パルプ濃度７５ｄｒｙ−ｇ／Ｌ以下で
あることを特徴とする請求項１に記載の方法。3. The method according to claim 1, wherein the conditions for leaching hydrochloric acid are a liquid temperature of 20 ° C. or more, a treatment time of 1 hour or more, and a pulp concentration of 75 dry-g / L or less.
〜３とし、ビスマスを残渣中に回収することを特徴とす
る請求項１記載の方法。4. The treatment solution after the hydrochloric acid treatment according to claim 1 is pH = 2.
The method according to claim 1, wherein bismuth is recovered in the residue.
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| JP2000217196A JP3548097B2 (en) | 2000-07-18 | 2000-07-18 | Separation and recovery method of bismuth and copper etc. from treatment object containing cuprous oxide and bismuth |
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| JP2007526397A (en) * | 2004-03-05 | 2007-09-13 | シーブイアールディ、インコ、リミテッド | Selective reduction of copper-containing calcined products. |
| CN101775619A (en) * | 2010-03-26 | 2010-07-14 | 中南大学 | Clean metallurgical method for bismuth or antimony by wet process |
| CN102102154A (en) * | 2010-12-22 | 2011-06-22 | 中南大学 | Low-temperature fused salt clean smelting method for tin |
| CN102732720A (en) * | 2012-04-01 | 2012-10-17 | 东北大学 | Method for processing copper oxide ore |
| CN102952941A (en) * | 2012-04-01 | 2013-03-06 | 东北大学 | Utilization method of copper oxide ores |
| CN105350026A (en) * | 2015-11-17 | 2016-02-24 | 郴州市金贵银业股份有限公司 | Method for recycling metal from bismuth slag |
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2000
- 2000-07-18 JP JP2000217196A patent/JP3548097B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007526397A (en) * | 2004-03-05 | 2007-09-13 | シーブイアールディ、インコ、リミテッド | Selective reduction of copper-containing calcined products. |
| CN101775619A (en) * | 2010-03-26 | 2010-07-14 | 中南大学 | Clean metallurgical method for bismuth or antimony by wet process |
| CN102102154A (en) * | 2010-12-22 | 2011-06-22 | 中南大学 | Low-temperature fused salt clean smelting method for tin |
| CN102732720A (en) * | 2012-04-01 | 2012-10-17 | 东北大学 | Method for processing copper oxide ore |
| CN102952941A (en) * | 2012-04-01 | 2013-03-06 | 东北大学 | Utilization method of copper oxide ores |
| CN102952941B (en) * | 2012-04-01 | 2016-02-24 | 东北大学 | A kind of method utilizing copper oxide ore |
| CN102732720B (en) * | 2012-04-01 | 2016-02-24 | 东北大学 | A kind of method processing copper oxide ore |
| CN105350026A (en) * | 2015-11-17 | 2016-02-24 | 郴州市金贵银业股份有限公司 | Method for recycling metal from bismuth slag |
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