JP5122295B2 - 銅の多段階直接電解抽出のためのプロセス - Google Patents
銅の多段階直接電解抽出のためのプロセス Download PDFInfo
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- JP5122295B2 JP5122295B2 JP2007538880A JP2007538880A JP5122295B2 JP 5122295 B2 JP5122295 B2 JP 5122295B2 JP 2007538880 A JP2007538880 A JP 2007538880A JP 2007538880 A JP2007538880 A JP 2007538880A JP 5122295 B2 JP5122295 B2 JP 5122295B2
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0084—Treating solutions
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Description
本発明は、一般的には、銅含有鉱石、濃縮物、又はその他の銅保持物質から銅を回収するプロセス、より具体的には、超微粉砕、銅分離操作、及び加圧浸出を使用して、多段階直接電解抽出プロセスでカソード銅を生成するプロセスに関する。
銅鉱石、濃縮物のような銅含有物質、及びその他の銅保持物質の湿式製錬処理は、何年にもわたって十分に確立されてきた。現在、これらの物質の湿式製錬処理に対して多くの創造的な手法が存在するが、現在知られている又は開発中のほぼ全てのプロセスに共通するのは、溶液精製及び銅回収のための溶媒/溶液抽出及び電解抽出(SX−EW)操作の使用である。
本発明が従来技術の欠陥及び欠点に対処する方法が、本明細書以下で詳細に記載されているが、一般に、本発明の種々の態様によれば、銅含有物質から銅及びその他の金属分を回収するプロセスは、例えば、加圧浸出系から銅含有溶液を得て、次に銅含有溶液を電解抽出のために適切にコンディショニングすることを含む。本発明の例示的態様において、銅含有溶液の組成は、例えば酸及び銅濃度に関して、溶媒/溶液抽出回路により生成される電解質の組成と同様である。しかし、本発明の種々の実施形態によれば、銅含有溶液を、電解抽出の前に溶媒/溶液抽出に付すことはない。
本発明は、先行技術のプロセス、特にその他のいわゆる「直接電解抽出」プロセスに対して、特に生成物品質及びプロセスの効率の観点から顕著な利点を示す。更に、従来の常圧及び加圧浸出、溶媒/溶液抽出及び電解抽出プロセスシーケンスを使用する現行の銅回収プロセスは、本発明が提供する多くの商業的利益を利用するために、多くの場合において容易に改修することができる。
CuFeS2+Cu+2 → Fe+2+2CuS。
4CuFeS2+17O2+4H2O → 4CuSO4+4H2SO4+2Fe2O3
2Cu2S+5O2+2H2SO4 → 4CuSO4+2H2O
CuS+2O2 → CuSO4。
4CuFeS2+4H2SO4+5O2 → 4CuSO4+2Fe2O3+8S0+4H2O
2CuS+2H2SO4+O2 → 2Cu+2+2SO4 −2+2H2O+2S0。
2CuSO4+2H2O → 2Cu0+2H2SO4+O2
カソード半反応:Cu2++2e− → Cu0
アノード半反応:2H2O → 4H++O2+4e−。
Claims (21)
- 銅保持物質から銅を回収する方法であって、
銅含有物質と酸とを含有する供給流を提供する工程;
該供給流を100℃〜250℃の温度で加圧浸出に付して、銅保持溶液と残渣を含む生成物スラリーを得る工程;
該生成物スラリーを一つ以上の化学的又は物理的なコンディショニング手順によってコンディショニングして、電解抽出に適する銅含有溶液を得る工程;
第一電解抽出段階で、該銅含有溶液を溶媒/溶液抽出に付すことなく、該銅含有溶液の少なくとも一部分から銅を電解抽出して、銅カソード及び第一段階の低品質の電解質流を生成する工程;
第二電解抽出段階で、該第一段階の低品質の電解質流の少なくとも一部分から銅を電解抽出して、銅カソード及び第二段階の低品質の電解質流を生成する工程;ならびに、
該第一段階の低品質の電解質流の少なくとも一部分を、該加圧浸出工程で再利用する工程、
を包含する方法であって、
ここで、該コンディショニングが、以下のうちの少なくとも1つを包含する、方法:
該銅含有溶液の少なくとも一部分と銅含有電解質流の少なくとも一部分とを混合して、該銅含有溶液中に15〜80グラム/リットルの銅濃度を達成する工程;
該生成物スラリーの少なくとも一部分を固液分離に付す工程であって、該銅保持溶液の少なくとも一部分が該残渣から分離される、工程;
該銅保持溶液の少なくとも一部分と一つ以上の銅保持流の少なくとも一部分とを混合して、該銅保持溶液中に所望の銅濃度を達成する工程;
該銅保持溶液の少なくとも一部分と一つ以上の銅保持流の少なくとも一部分とを混合して、該銅保持溶液中に15〜80グラム/リットルの銅濃度を達成する工程;および
該生成物スラリーの少なくとも一部分を濾過に付す工程であって、該銅保持溶液の少なくとも一部分が該残渣から分離される、工程。 - 銅保持物質を含む供給流を提供する前記工程が、銅保持硫化物鉱石、濃縮物又は沈殿物を含む供給流を提供する工程を包含する、請求項1に記載の方法。
- 銅保持物質を含む供給流を提供する前記工程が、黄銅鉱、輝銅鉱、斑銅鉱、銅藍、方輝銅鉱、及び硫砒銅鉱、又はこれらの混合物若しくは組み合わせの少なくとも一つを含む供給流を提供する工程を包含する、請求項1に記載の方法。
- 銅保持物質を含む供給流を提供する前記工程が、黄銅鉱を含む供給流を提供する工程を包含する、請求項3に記載の方法。
- 銅保持物質を含む供給流を提供する前記工程が、銅保持物質を含む供給流と、銅及び酸を含む溶液流とを提供する工程を包含する、請求項1に記載の方法。
- 更に、前記供給流中で前記酸から前記銅保持物質の少なくとも一部分を分離して、該銅保持物質を含む銅含有供給流を得る工程を包含する、請求項1に記載の方法。
- 前記分離手順が、前記銅含有電解質流中の銅の少なくとも一部分を反応させて、該銅含有電解質流中の銅の少なくとも一部分を硫化銅として前記供給流中に沈殿させる工程を包含する、請求項6に記載の方法。
- 前記分離工程が、前記銅含有電解質流中の銅の少なくとも一部分を二酸化硫黄の存在下で反応させる工程を包含し、それによって、該銅含有電解質流中の銅の少なくとも一部分が硫化銅として前記供給流中に沈殿する、請求項6に記載の方法。
- 前記浸出工程が、加圧浸出容器中において、前記供給流の少なくとも一部分を、140℃〜180℃の温度、100psi〜750psiの全動作圧力下で浸出する工程を包含する、請求項1に記載の方法。
- 更に、前記浸出工程が、前記加圧浸出容器の中に酸素を注入して、該加圧浸出容器中の酸素分圧を50psi〜250psiに維持する工程を包含する、請求項9に記載の方法。
- 前記浸出工程が、加圧浸出容器中において、前記供給流の少なくとも一部分を、200℃〜235℃の温度、100psi〜750psiの全動作圧力下で浸出する工程を包含する、請求項1に記載の方法。
- 更に、前記浸出工程が、前記加圧浸出容器の中に酸素を注入して、該加圧浸出容器中の酸素分圧を50psi〜250psiに維持する工程を包含する、請求項11に記載の方法。
- 前記供給流を加圧浸出する工程が、リグニン誘導体、オルトフェニレンジアミン、アルキルスルホン酸、及びこれらの混合物からなる群より選択される界面活性剤の存在下で該供給流を加圧浸出する工程を包含する、請求項1に記載の方法。
- 前記供給流を加圧浸出する工程が、リグノスルホン酸カルシウムの存在下で該供給流を加圧浸出する工程を包含する、請求項1に記載の方法。
- 前記供給流を加圧浸出する工程が、該銅含有供給流中の濃縮物1トン当たり2〜20キログラムの量の界面活性剤の存在下で該供給流を加圧浸出する工程を包含する、請求項1に記載の方法。
- 第二電解抽出段階で、前記第一段階の低品質の電解質流の少なくとも一部分から銅を電解抽出する工程が、該第一段階の低品質の電解質流を溶媒/溶液抽出に付すことなく、該第一段階の低品質の電解質流の少なくとも一部分から銅を電解抽出する工程を包含する、請求項1に記載の方法。
- 第二電解抽出段階で、前記第一段階の低品質の電解質流の少なくとも一部分から銅を電解抽出する工程が、該第一段階の低品質の電解質流を溶媒/溶液抽出に付すことなく、該第一段階の低品質の電解質流の少なくとも一部分から銅を電解抽出する工程を包含する、請求項6に記載の方法。
- 更に、常圧浸出操作下で前記第二段階の低品質の電解質流の一部分を使用する工程を包含する、請求項1に記載の方法。
- 更に、前記第二段階の低品質の電解質流の一部分を前記分離工程で再利用する工程を包含する、請求項1に記載の方法。
- 更に、前記第二段階の低品質の電解質流の一部分を前記加圧浸出工程で再利用する工程を包含する、請求項1に記載の方法。
- 前記浸出工程が、前記供給流の少なくとも一部分を、加圧浸出容器中、140℃〜180℃の温度、100psi〜750psiの全動作圧力下で浸出する工程を包含する、請求項1に記載の方法。
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US62319904P | 2004-10-29 | 2004-10-29 | |
US60/623,199 | 2004-10-29 | ||
PCT/US2004/042036 WO2006049631A2 (en) | 2004-10-29 | 2004-12-13 | Process for multiple stage direct electrowinning of copper |
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JP2010134578A Withdrawn JP2010255118A (ja) | 2004-10-29 | 2010-06-11 | 銅の多段階直接電解抽出のためのプロセス |
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US (3) | US7462272B2 (ja) |
EP (1) | EP1812625B1 (ja) |
JP (2) | JP5122295B2 (ja) |
AP (1) | AP1924A (ja) |
AT (1) | ATE531834T1 (ja) |
AU (1) | AU2004324609B2 (ja) |
BR (1) | BRPI0419190A (ja) |
CA (1) | CA2588257C (ja) |
EA (1) | EA010941B1 (ja) |
MX (1) | MX2007005090A (ja) |
PE (1) | PE20060406A1 (ja) |
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AU2004324609A1 (en) | 2006-05-11 |
US7462272B2 (en) | 2008-12-09 |
EA010941B1 (ru) | 2008-12-30 |
US8012318B2 (en) | 2011-09-06 |
US20060144716A1 (en) | 2006-07-06 |
CA2588257C (en) | 2010-03-09 |
CA2588257A1 (en) | 2006-05-11 |
AU2004324609B2 (en) | 2009-05-21 |
US7722756B2 (en) | 2010-05-25 |
WO2006049631A3 (en) | 2006-06-22 |
AP1924A (en) | 2008-12-05 |
JP2008518107A (ja) | 2008-05-29 |
WO2006049631A2 (en) | 2006-05-11 |
JP2010255118A (ja) | 2010-11-11 |
AP2007003984A0 (en) | 2007-06-30 |
EP1812625A2 (en) | 2007-08-01 |
BRPI0419190A (pt) | 2008-01-22 |
ZA200703447B (en) | 2008-09-25 |
US20100206741A1 (en) | 2010-08-19 |
WO2006049631B1 (en) | 2006-07-20 |
MX2007005090A (es) | 2007-07-04 |
EA200700887A1 (ru) | 2007-10-26 |
US20090071839A1 (en) | 2009-03-19 |
PE20060406A1 (es) | 2006-05-10 |
EP1812625B1 (en) | 2011-11-02 |
ATE531834T1 (de) | 2011-11-15 |
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