KR20020076654A - How to recover precious metals from waste slits - Google Patents

How to recover precious metals from waste slits Download PDF

Info

Publication number
KR20020076654A
KR20020076654A KR1020010016662A KR20010016662A KR20020076654A KR 20020076654 A KR20020076654 A KR 20020076654A KR 1020010016662 A KR1020010016662 A KR 1020010016662A KR 20010016662 A KR20010016662 A KR 20010016662A KR 20020076654 A KR20020076654 A KR 20020076654A
Authority
KR
South Korea
Prior art keywords
precious metals
waste sludge
recovering
waste
metals
Prior art date
Application number
KR1020010016662A
Other languages
Korean (ko)
Inventor
이보협
Original Assignee
이보협
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 이보협 filed Critical 이보협
Priority to KR1020010016662A priority Critical patent/KR20020076654A/en
Publication of KR20020076654A publication Critical patent/KR20020076654A/en

Links

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
    • C22B11/00—Obtaining noble metals
    • C22B11/10—Obtaining noble metals by amalgamating
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: A method for recovering precious metals from waste sludge is provided which treats the waste sludge in dry type to simply treated the waste sludge, increase recovery ratio of the precious metals, generate non-secondary contamination, and environmentally friendly decompose organic materials contained in the waste sludge. CONSTITUTION: The method for recovering precious metals from waste sludge comprises the steps of roasting the waste sludge in the temperature range of 900 to 1100 deg.C in recovering the precious metals contained in the waste sludge into metals; pulverizing the roasted waste sludge so that the pulverized waste sludge is well absorbed by mercury; and recovering the precious metals by absorbing the precious metals into mercury, thereby separating the precious metals from the pulverized waste sludge in an ordinary amalgamation process, wherein general constituents of the waste sludge generated during treatment of wastewater containing the precious metals comprises Al(OH)3, CaSO4, Cu(OH)2, Fe(OH)3, AgCl, AgS and a trace of organic materials, the waste sludge is roasted in the temperature range of 900 to 1100 deg.C so that oxides of Al2O3, CaSO4, CuO and Fe2O3 are produced, a trace of the organic materials are pyrolyzed to be environmentally friendly treated, and the constituents such as AgCl and AgS become metal Ag, and the precious metals are recovered in amalgamation process by roasting thus pyrolyzing the waste sludge in the temperature range of 900 to 1100 deg.C so that precious metals existed as salts are revived into precious metals.

Description

폐슬랏치에서 귀금속 회수방법{omitted}Recovery method of precious metals from waste slits {omitted}

본 발명품은 폐슬랏치에서 친환경적으로 귀금속을 간단하게 효율적으로 회수하는 방법에 관한 것 이다.The present invention relates to a simple and efficient method for recovering precious metals in an environmentally friendly manner in a closed slot.

종래에는 폐슬랏치속의 귀금속류를 회수하기 위하여 염산, 질산, 황산등 산류 또는 적당한 유기물을 용제로 하여 추출하여 화학반응 또는 전기분해 등에 의하여 금속을 회수 하였다.Conventionally, in order to recover precious metals in the waste slot, acids such as hydrochloric acid, nitric acid, sulfuric acid, or other suitable organic substances are extracted as a solvent to recover metals by chemical reaction or electrolysis.

이는 추출액과 폐슬랏치의 완전분리가 어려워 회수효율이 40 ~ 50% 정도에 그처 추출액에 원하지 않는 금속이 동시에 추출되어 회수금속의 순도에도 문제가 되고 폐슬랏치의 수세(水洗)에 막대한 량의 용수가 필요하며 2차 수질오염 발생의 원인이 되고 폐슬랏치를 재 탈수등 공정이 번거러운 단점이 있다.This is difficult to completely separate the extraction liquid and the waste sludge, so the recovery efficiency is 40-50%. Therefore, the unwanted metal is extracted at the same time, and the purity of the recovered metal is also a problem, and enormous amount of water is used for washing the waste sludge. It is necessary and causes secondary water pollution, and the process of re-dewatering waste slits is cumbersome.

따라서 본 발명의 목적은 상기한 바와 같은 문제점을 해결하여 간단하고 저렴하면서도 귀금속의 회수율을 99% 이상 높이고 2차 폐수가 발생하지 않는 방법을 제공하는데 있다.Accordingly, an object of the present invention is to solve the problems as described above to provide a simple and inexpensive, recovery of precious metals by more than 99% and does not generate secondary waste water.

본 발명은 폐슬랏치를 900 ~ 1100°c 범위에서 배소 시키는 단계, 이것을 수은에 잘 흡수되도록 분쇄하는 단계, 다음에 수은에 귀금속류를 흡수시켜 통상의 수은 아말감법으로 금속을 회수하는 단계로 되어진 방법이다.The present invention is a method comprising roasting the waste slot in the range of 900 ~ 1100 ° C, pulverizing it so as to be well absorbed by mercury, and then recovering the metal by the conventional mercury amalgam method by absorbing the precious metals in mercury. .

본 발명을 더 자세히 설명하면 귀금속이 포함되어 있는 폐수처리시에 발생하는 폐슬랏치의 대체적인 성분은 Al(oh)3, CaSo4, Cu(oh)2, Fe(oh)3, Agcl, Ags 외미량의 유기물이 포함된 상태로 존재한다.When explaining the present invention in more detail, the alternative components of the waste sludge generated during the treatment of wastewater containing precious metals include Al (oh) 3, CaSo4, Cu (oh) 2, Fe (oh) 3, Agcl, Ags It exists in the state containing the organic substance of.

위의 폐슬랏치를 900 ~ 1100 c의 범위로 배소하면Al2o3, Caso4, CuO, Fe2O3의 산화물이 생성되고 미량의 유기물은 열분해되어 무해화 되고 Agcl, Ags등을 Ag금속으로된다.When the above waste slots are roasted in the range of 900 to 1100 c, oxides of Al2o3, Caso4, CuO, Fe2O3 are produced, and trace organic matters are pyrolyzed to become harmless and Agcl, Ags, etc. become Ag metal.

이것을 수은에 잘 흡수 되도록 분쇄한 다음 통상의 수은 아말감법으로 귀금속을 분리하는 것이다.This is pulverized to be absorbed well by mercury, and the precious metals are separated by the conventional mercury amalgam method.

본 발명은 폐슬랏치를 900 ~ 1100°c범위로 배소하여 염으로 존재하는 귀금속류를 열분해 하여 금속으로 환원하여 통상의 수은 아말감법으로 회수 할 수 있도록 하는 것이 특징이다.The present invention is characterized in that the waste slot is roasted in the range of 900 to 1100 ° C. to pyrolyze the precious metals present as salts to reduce them to metals, thereby recovering them by the conventional mercury amalgam method.

본 발명의 방법은 전술한바와 같은 종래의 방법에 비하여 다음과 같은 효과가 있다.The method of the present invention has the following effects as compared to the conventional method as described above.

(1) 귀금속류의 회수효율 99% 이상으로 높다.(1) The recovery efficiency of precious metals is high, over 99%.

(2) 2차 수질오염의 원인이 된다(2) It causes the second water pollution

(3) 공정이 단순하고 저렴한 가격으로 분리된다.(3) The process is separated at a simple and low price.

(4) 나머지 슬랏치는 유기물 등이 분해되어 친환경적인 처리가 된다.(4) The remaining slots are environmentally friendly by decomposing organic matters.

Claims (1)

폐슬랏치중에 함유되어 있는 귀금속류를 금속으로 회수함에 있어 폐슬랏치를 900 ~ 1100°c범위에서 배소 시키는 단계,Roasting the waste slot in the range of 900 to 1100 ° C. in recovering the precious metals contained in the waste slot as metal; 이것을 분쇄하는 단계,Crushing this, 수은에 귀금속류를 흡수시켜 통상의 수은 아말감법으로 금속을 회수하는 단계, 로 이루어진 방법Absorption of precious metals into mercury to recover the metal by the conventional mercury amalgam method, comprising
KR1020010016662A 2001-03-29 2001-03-29 How to recover precious metals from waste slits KR20020076654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010016662A KR20020076654A (en) 2001-03-29 2001-03-29 How to recover precious metals from waste slits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010016662A KR20020076654A (en) 2001-03-29 2001-03-29 How to recover precious metals from waste slits

Publications (1)

Publication Number Publication Date
KR20020076654A true KR20020076654A (en) 2002-10-11

Family

ID=27699221

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010016662A KR20020076654A (en) 2001-03-29 2001-03-29 How to recover precious metals from waste slits

Country Status (1)

Country Link
KR (1) KR20020076654A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108754499A (en) * 2018-07-03 2018-11-06 贵州大学 A kind of technique of relieving haperacidity coproduction metal-polishing liquid
KR20210002924A (en) * 2019-07-01 2021-01-11 노상균 Method for recovering valuable metals from process sludge containing valuable metal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342591A (en) * 1980-06-03 1982-08-03 Mines Et Produits Chimiques De Salsigne Process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides
US4913407A (en) * 1988-06-15 1990-04-03 International Mineral Resources, Inc. Precious metal recovery system
KR20000050632A (en) * 1999-01-13 2000-08-05 진수곤 Extraction device for metal oxide utilizing waste acid and the method thereof
KR20020023075A (en) * 2000-09-22 2002-03-28 박도봉 Pollution-free method and apparatus for recycling the plated steel plates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342591A (en) * 1980-06-03 1982-08-03 Mines Et Produits Chimiques De Salsigne Process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides
US4913407A (en) * 1988-06-15 1990-04-03 International Mineral Resources, Inc. Precious metal recovery system
KR20000050632A (en) * 1999-01-13 2000-08-05 진수곤 Extraction device for metal oxide utilizing waste acid and the method thereof
KR20020023075A (en) * 2000-09-22 2002-03-28 박도봉 Pollution-free method and apparatus for recycling the plated steel plates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108754499A (en) * 2018-07-03 2018-11-06 贵州大学 A kind of technique of relieving haperacidity coproduction metal-polishing liquid
CN108754499B (en) * 2018-07-03 2021-03-16 贵州大学 Process for preparing acid and coproducing metal polishing solution
KR20210002924A (en) * 2019-07-01 2021-01-11 노상균 Method for recovering valuable metals from process sludge containing valuable metal

Similar Documents

Publication Publication Date Title
Zhang et al. Recycling indium from waste LCDs: A review
TWI415164B (en) Method for recovery of rare earths from fluorescent lamps
PE20040819A1 (en) PROCESS TO RECOVER A PRECIOUS METAL FROM A MATERIAL
CN101392332B (en) Cleaning production technique for directly transforming rare earth sulfate bake ore to extract rare earth
Xue et al. Removal of heavy metals from municipal solid waste incineration (MSWI) fly ash by traditional and microwave acid extraction
CN104512974A (en) Method for deeply removing persistent organic pollutants and heavy metal in water body
RU2150430C1 (en) Method of isolating metal components from initial materials and method of isolating metal and acidic components from initial materials
JP2019529721A (en) Process for the production of concentrates of metals, rare metals and rare earth metals from residues of alumina production by the Bayer process or from materials having a similar chemical composition to the residue, and purification of the concentrates thus obtained
KR20170106876A (en) a method for seperating metal from sludge.
KR850006682A (en) Pickling Waste Collection and Treatment Process of Stainless Steel
Zhao et al. Chlorine and heavy metals removal from municipal solid waste incineration fly ash by electric field enhanced oxalic acid washing
KR20020076654A (en) How to recover precious metals from waste slits
CN105836918A (en) Technological method of rare earth industrial wastewater treatment and cyclic utilization
CN106745416B (en) Application of arsenic and fluorine in high-temperature molten copper slag treatment of contaminated acid and application method thereof
CN104291432A (en) Method for deeply removing thallium in water through ultrasonic-assisted oxidation
RU2156817C1 (en) Method of preparing palladium from spent aluminium oxide- based catalysts
CN109775669B (en) Method for green extraction of selenium from selenium-containing anode mud
JPH0747395A (en) Retreatment of residue of treated fluorine in waste liquid
RU2005138321A (en) RESIN AND METHOD FOR REMOVING NON-FERROUS METALS
KR100367710B1 (en) Recovery method of platinum group metals from spent active carbon catalyst
TWI535854B (en) Resource recovery of gallium from scrap sapphire wafer
JP2011062644A (en) Method for recovering valuable resource from disposed matter
JP7009008B1 (en) How to treat sewage sludge incinerator ash
JP2006274434A (en) Method for separating and recovering heavy metal component from fishery waste
JP3081176B2 (en) Hazardous chlorine compound removal method

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application