EP0022839A4 - Recuperation de cyanures a partir de solutions de rincage de procedes cyanhydriques pour le depot electrolytique de metaux. - Google Patents

Recuperation de cyanures a partir de solutions de rincage de procedes cyanhydriques pour le depot electrolytique de metaux.

Info

Publication number: EP0022839A4
Authority: EP; European Patent Office
Prior art keywords: cyanides; cyanide; rinsing; recuperation; metals
Prior art date: 1979-01-29
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP19800900266

Other languages

German (de)

English (en)

Other versions

EP0022839A1 (fr

Inventor

Michael Franz-Xaver Peuser

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.)

Individual

Original Assignee

Individual

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.)

1979-01-29

Filing date

1980-08-15

Publication date

1981-06-26

1980-08-15 Application filed by Individual filed Critical Individual

1981-01-28 Publication of EP0022839A1 publication Critical patent/EP0022839A1/fr

1981-06-26 Publication of EP0022839A4 publication Critical patent/EP0022839A4/fr

Status Withdrawn legal-status Critical Current

Links

XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims description 41
238000000034 method Methods 0.000 title claims description 37
238000004140 cleaning Methods 0.000 title 1
238000001465 metallisation Methods 0.000 title 1
238000011084 recovery Methods 0.000 title 1
239000012487 rinsing solution Substances 0.000 claims description 44
230000008569 process Effects 0.000 claims description 34
229910052751 metal Inorganic materials 0.000 claims description 32
239000002184 metal Substances 0.000 claims description 32
150000002739 metals Chemical group 0.000 claims description 25
150000002825 nitriles Chemical class 0.000 claims description 23
238000004070 electrodeposition Methods 0.000 claims description 19
150000003839 salts Chemical class 0.000 claims description 15
238000011282 treatment Methods 0.000 claims description 15
239000000047 product Substances 0.000 claims description 12
239000000126 substance Substances 0.000 claims description 12
239000011701 zinc Substances 0.000 claims description 12
239000010949 copper Substances 0.000 claims description 10
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
229910052725 zinc Inorganic materials 0.000 claims description 9
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
229910052802 copper Inorganic materials 0.000 claims description 8
DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 claims description 8
238000009713 electroplating Methods 0.000 claims description 8
238000001556 precipitation Methods 0.000 claims description 8
239000002253 acid Substances 0.000 claims description 6
GTLDTDOJJJZVBW-UHFFFAOYSA-N zinc cyanide Chemical compound [Zn+2].N#[C-].N#[C-] GTLDTDOJJJZVBW-UHFFFAOYSA-N 0.000 claims description 6
229910052793 cadmium Inorganic materials 0.000 claims description 5
BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 5
238000000151 deposition Methods 0.000 claims description 5
230000008021 deposition Effects 0.000 claims description 5
238000001914 filtration Methods 0.000 claims description 5
238000009472 formulation Methods 0.000 claims description 5
239000000203 mixture Substances 0.000 claims description 5
150000007513 acids Chemical class 0.000 claims description 4
NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
239000011686 zinc sulphate Substances 0.000 claims description 4
235000009529 zinc sulphate Nutrition 0.000 claims description 4
239000007789 gas Substances 0.000 claims description 3
PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
229910052737 gold Inorganic materials 0.000 claims description 3
239000010931 gold Substances 0.000 claims description 3
150000001455 metallic ions Chemical class 0.000 claims description 3
229910052709 silver Inorganic materials 0.000 claims description 3
239000004332 silver Substances 0.000 claims description 3
239000000956 alloy Substances 0.000 claims description 2
229910045601 alloy Inorganic materials 0.000 claims description 2
238000006243 chemical reaction Methods 0.000 claims description 2
238000004519 manufacturing process Methods 0.000 claims description 2
239000008237 rinsing water Substances 0.000 claims description 2
238000007792 addition Methods 0.000 claims 7
239000002244 precipitate Substances 0.000 claims 3
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 2
150000003751 zinc Chemical class 0.000 claims 2
KKEBXNMGHUCPEZ-UHFFFAOYSA-N 4-phenyl-1-(2-sulfanylethyl)imidazolidin-2-one Chemical compound N1C(=O)N(CCS)CC1C1=CC=CC=C1 KKEBXNMGHUCPEZ-UHFFFAOYSA-N 0.000 claims 1
JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims 1
UOACKFBJUYNSLK-XRKIENNPSA-N Estradiol Cypionate Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H](C4=CC=C(O)C=C4CC3)CC[C@@]21C)C(=O)CCC1CCCC1 UOACKFBJUYNSLK-XRKIENNPSA-N 0.000 claims 1
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims 1
150000001661 cadmium Chemical class 0.000 claims 1
NHMJUOSYSOOPDM-UHFFFAOYSA-N cadmium cyanide Chemical compound [Cd+2].N#[C-].N#[C-] NHMJUOSYSOOPDM-UHFFFAOYSA-N 0.000 claims 1
WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 claims 1
229910001431 copper ion Inorganic materials 0.000 claims 1
238000000605 extraction Methods 0.000 claims 1
238000010438 heat treatment Methods 0.000 claims 1
229910052708 sodium Inorganic materials 0.000 claims 1
239000011734 sodium Substances 0.000 claims 1
235000010267 sodium hydrogen sulphite Nutrition 0.000 claims 1
239000004289 sodium hydrogen sulphite Substances 0.000 claims 1
GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims 1
239000000243 solution Substances 0.000 claims 1
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
239000000463 material Substances 0.000 description 11
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
230000006378 damage Effects 0.000 description 4
235000011121 sodium hydroxide Nutrition 0.000 description 4
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 3
ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 3
LEKPFOXEZRZPGW-UHFFFAOYSA-N copper;dicyanide Chemical compound [Cu+2].N#[C-].N#[C-] LEKPFOXEZRZPGW-UHFFFAOYSA-N 0.000 description 3
-1 cyanide metals Chemical class 0.000 description 3
NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 3
PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
229910001385 heavy metal Inorganic materials 0.000 description 2
210000000056 organ Anatomy 0.000 description 2
239000002002 slurry Substances 0.000 description 2
229910000029 sodium carbonate Inorganic materials 0.000 description 2
239000003643 water by type Substances 0.000 description 2
230000016571 aggressive behavior Effects 0.000 description 1
239000003518 caustics Substances 0.000 description 1
239000012141 concentrate Substances 0.000 description 1
238000011161 development Methods 0.000 description 1
230000018109 developmental process Effects 0.000 description 1
230000005518 electrochemistry Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
239000012530 fluid Substances 0.000 description 1
159000000011 group IA salts Chemical class 0.000 description 1
231100000086 high toxicity Toxicity 0.000 description 1
239000003295 industrial effluent Substances 0.000 description 1
238000013383 initial experiment Methods 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
239000002574 poison Substances 0.000 description 1
231100000614 poison Toxicity 0.000 description 1
238000004321 preservation Methods 0.000 description 1
238000004064 recycling Methods 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
229910052938 sodium sulfate Inorganic materials 0.000 description 1
235000011152 sodium sulphate Nutrition 0.000 description 1
239000002904 solvent Substances 0.000 description 1
238000003860 storage Methods 0.000 description 1
230000009466 transformation Effects 0.000 description 1
230000001131 transforming effect Effects 0.000 description 1
230000000007 visual effect Effects 0.000 description 1
239000002699 waste material Substances 0.000 description 1
239000002351 wastewater Substances 0.000 description 1
239000011592 zinc chloride Substances 0.000 description 1
235000005074 zinc chloride Nutrition 0.000 description 1
UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
229940007718 zinc hydroxide Drugs 0.000 description 1
229910021511 zinc hydroxide Inorganic materials 0.000 description 1

Classifications

- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/20—Regeneration of process solutions of rinse-solutions
- 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

Definitions

the metallic cyanides precipitated by means of the proposed process that is theRECUPERATION OF CYA NIDES FROM RINSING SOLUTIONS OF CYANIDRIC PROCESSES FOR ELEC ⁇ TRODEPOSITION OF METALS, maybe directly re-used in the re ⁇ spective dips after their rinsing (the insoluble precipi ⁇ tate) in the filters or by deposition with water, until the rinsing water attains a density of 1.000 or 0° Be, thus re ⁇ leasing the precipitated cyanide fromthe other soluble ⁇ -x ⁇ p ⁇ nent
the same process presented may also be used for the precipi
the value of the reclaimed material is therefore 2.1 times the value of the metallic salt used for the recuperation.
the physical values are constant in ⁇ ternationally; -the values in money may show up in relation to the cost of the chemical products per country.
the copper, the zinc, the cadmium, the silver, the gold and cyanides are imported materials, thus justifying avoidance of the loss of these products in the rinsing solutions in the electroplating industry.
the electroplating industry is up against problems con ⁇ cerning the compliance with the standards of public organs, which are responsible for the preservation and protection of the ecology. They demand an efficient and complete treat ment of the industrial effluent waste products.
the precipitation formulation may be generalized consid ⁇ ering as -M- the symbol of a metal, the atomic weight of which is between 60 and 200, thus allowing the objective of the recuperation of the cyanides and the respective metals in the rinsing solutions.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Organic Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Metallurgy (AREA)
Life Sciences & Earth Sciences (AREA)
Materials Engineering (AREA)
Environmental & Geological Engineering (AREA)
Geology (AREA)
Mechanical Engineering (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Water Supply & Treatment (AREA)
Manufacturing & Machinery (AREA)
Hydrology & Water Resources (AREA)
General Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Electrochemistry (AREA)
Removal Of Specific Substances (AREA)
Manufacture And Refinement Of Metals (AREA)
Electrolytic Production Of Metals (AREA)
Electroplating And Plating Baths Therefor (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

EP19800900266 1979-01-29 1980-08-15 Recuperation de cyanures a partir de solutions de rincage de procedes cyanhydriques pour le depot electrolytique de metaux. Withdrawn EP0022839A4 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
BR7900702		1979-01-29
BR7900702A BR7900702A (pt)	1979-01-29	1979-01-29	Recuperacao de cianetos das aguas de lavagens dos processos cianidricos de eletrodeposicao de metais

Publications (2)

Publication Number	Publication Date
EP0022839A1 EP0022839A1 (fr)	1981-01-28
EP0022839A4 true EP0022839A4 (fr)	1981-06-26

Family

ID=4014093

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19800900266 Withdrawn EP0022839A4 (fr)	1979-01-29	1980-08-15	Recuperation de cyanures a partir de solutions de rincage de procedes cyanhydriques pour le depot electrolytique de metaux.

Country Status (28)

Country	Link
EP (1)	EP0022839A4 (fr)
JP (1)	JPS56500136A (fr)
AR (1)	AR231428A1 (fr)
AU (1)	AU537457B2 (fr)
BE (1)	BE881417A (fr)
BR (1)	BR7900702A (fr)
CA (1)	CA1160018A (fr)
CH (1)	CH645077A5 (fr)
CS (1)	CS221253B2 (fr)
DD (1)	DD148795A5 (fr)
ES (1)	ES488033A0 (fr)
FI (1)	FI67356C (fr)
GB (1)	GB2055900B (fr)
GR (1)	GR67263B (fr)
HU (1)	HU182603B (fr)
IE (1)	IE49370B1 (fr)
IL (1)	IL59207A (fr)
IT (1)	IT1188898B (fr)
MX (1)	MX153331A (fr)
NL (1)	NL8020027A (fr)
NO (1)	NO153217C (fr)
PL (1)	PL128213B1 (fr)
PT (1)	PT70738A (fr)
RO (1)	RO80891A (fr)
SE (1)	SE441521B (fr)
WO (1)	WO1980001563A1 (fr)
YU (1)	YU19780A (fr)
ZA (1)	ZA80402B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT375683B (de) *	1982-06-15	1984-08-27	Wolfram Manner	Verfahren zum wiedergewinnen von inhaltsstoffen aus sauren oder angesaeuerten beiz-, aetz- oder galvanoloesungen
CA2057217C (fr) *	1990-12-11	1999-08-31	Bruce Edward Holbein	Procede de decontamination de sols contenant des metaux lourds, toxiques
JP6201114B2 (ja) *	2012-11-01	2017-09-27	株式会社片山化学工業研究所	シアン含有廃水の処理方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1614523A (en) *	1922-05-13	1927-01-18	American Cyanamid Co	Process of producing heavy metal cyanides
US2845330A (en) *	1955-08-15	1958-07-29	Holden Artemas F	Method of recovering cyanides from waste aqueous solutions containing metal cyanides
US3736239A (en) *	1971-03-18	1973-05-29	Us Interior	Neutralization of metal containing wastes
SU528265A1 (ru) *	1972-09-26	1976-09-15	Государственный научно-исследовательский и проектный институт по обогащению руд цветных металлов "Казмеханобр"	Способ очистки сточных вод от меди и цианидов
JPS50656A (fr) *	1973-05-08	1975-01-07

1979
- 1979-01-29 BR BR7900702A patent/BR7900702A/pt unknown
1980
- 1980-01-18 CH CH734480A patent/CH645077A5/de not_active IP Right Cessation
- 1980-01-18 JP JP50039180A patent/JPS56500136A/ja active Pending
- 1980-01-18 GB GB8031140A patent/GB2055900B/en not_active Expired
- 1980-01-18 WO PCT/BR1980/000002 patent/WO1980001563A1/fr not_active Ceased
- 1980-01-18 RO RO80102238A patent/RO80891A/fr unknown
- 1980-01-18 NL NL8020027A patent/NL8020027A/nl not_active Application Discontinuation
- 1980-01-23 IL IL59207A patent/IL59207A/xx unknown
- 1980-01-23 ZA ZA00800402A patent/ZA80402B/xx unknown
- 1980-01-24 CS CS80517A patent/CS221253B2/cs unknown
- 1980-01-24 MX MX180937A patent/MX153331A/es unknown
- 1980-01-25 ES ES488033A patent/ES488033A0/es active Granted
- 1980-01-25 GR GR61039A patent/GR67263B/el unknown
- 1980-01-25 YU YU00197/80A patent/YU19780A/xx unknown
- 1980-01-28 PT PT70738A patent/PT70738A/pt unknown
- 1980-01-28 IE IE161/80A patent/IE49370B1/en unknown
- 1980-01-28 HU HU80178A patent/HU182603B/hu unknown
- 1980-01-28 CA CA000344508A patent/CA1160018A/fr not_active Expired
- 1980-01-28 DD DD80218685A patent/DD148795A5/de unknown
- 1980-01-29 BE BE0/199166A patent/BE881417A/fr not_active IP Right Cessation
- 1980-01-29 FI FI800250A patent/FI67356C/fi not_active IP Right Cessation
- 1980-01-29 AR AR279780A patent/AR231428A1/es active
- 1980-01-29 AU AU54999/80A patent/AU537457B2/en not_active Ceased
- 1980-01-29 PL PL1980221661A patent/PL128213B1/pl unknown
- 1980-01-29 IT IT47738/80A patent/IT1188898B/it active
- 1980-08-15 EP EP19800900266 patent/EP0022839A4/fr not_active Withdrawn
- 1980-09-23 SE SE8006649A patent/SE441521B/sv not_active IP Right Cessation
- 1980-09-26 NO NO802849A patent/NO153217C/no unknown

Also Published As

Publication number	Publication date
IT8047738A0 (it)	1980-01-29
WO1980001563A1 (fr)	1980-08-07
GR67263B (fr)	1981-06-26
FI800250A7 (fi)	1980-07-30
PT70738A (en)	1980-02-01
AU537457B2 (en)	1984-06-28
EP0022839A1 (fr)	1981-01-28
FI67356C (fi)	1985-03-11
HU182603B (en)	1984-02-28
RO80891B (ro)	1983-08-30
RO80891A (fr)	1983-09-26
YU19780A (en)	1983-01-21
GB2055900A (en)	1981-03-11
JPS56500136A (fr)	1981-02-12
ZA80402B (en)	1981-08-26
NO153217C (no)	1986-02-05
GB2055900B (en)	1984-04-04
SE8006649L (sv)	1980-09-23
PL128213B1 (en)	1984-01-31
CS221253B2 (en)	1983-04-29
PL221661A1 (fr)	1980-10-20
IE800161L (en)	1980-07-29
IE49370B1 (en)	1985-09-18
NL8020027A (nl)	1980-11-28
CH645077A5 (de)	1984-09-14
ES8100815A1 (es)	1980-12-16
SE441521B (sv)	1985-10-14
AR231428A1 (es)	1984-11-30
NO802849L (no)	1980-09-26
NO153217B (no)	1985-10-28
BR7900702A (pt)	1980-12-09
IT1188898B (it)	1988-01-28
AU5499980A (en)	1980-08-07
ES488033A0 (es)	1980-12-16
IL59207A0 (en)	1980-05-30
MX153331A (es)	1986-09-17
BE881417A (fr)	1980-05-16
IT8047738A1 (it)	1981-07-29
IL59207A (en)	1985-08-30
FI67356B (fi)	1984-11-30
CA1160018A (fr)	1984-01-10
DD148795A5 (de)	1981-06-10

Legal Events

Date	Code	Title	Description
1980-12-01	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1981-01-28	17P	Request for examination filed	Effective date: 19801023
1981-01-28	AK	Designated contracting states	Designated state(s): FR
1987-03-16	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
1987-05-06	18D	Application deemed to be withdrawn	Effective date: 19861008

Publication	Publication Date	Title
Dean et al.	1972	Removing heavy metals from waste water
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CN104060097B (zh)	2017-02-08	一种电镀污泥中镍、钴、铜、锰、锌的分离回收方法
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