Yakananga Electrowinning yeGoridhe kubva kuCyanide Solution

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Cyanidation yagara iri nzira yekutanga yekubvisa goridhe kubva mu ores. Mushure me cyanide leaching process, goridhe riripo mu cyanide solution, inozivikanwa semushonga wekubvisa leach une mimba. Pachivanhu, nzira dzakadai sedzinobvisa kabhoni Kunyungudutsa (senge nzira yeCarbon-in-Column - CIC) uye zinc cementation (Merrill Crowe process) zvakashandiswa kuwana goridhe kubva mumhinduro iyi. Zvisinei, kuwana electrowinning zvakananga kubva ku cyanide solutions kwave kuri imwe nzira inovimbisa, ichipa mabhenefiti akati wandei maererano nekushanda zvakanaka, mutengo, uye kukanganisa nharaunda.

Iyo Nheyo yeDirect Electrowinning

Direct electrowinning inzira ye electrochemical. Muchirevo che kutorwa kwegoridhe kubva kune cyanide solutions, kana magetsi achipfuura nemushonga wecyanide une goridhe nenzira ye aurocyanide complexes (Au(CN)_2^-), maitiro anotevera anoitika pama electrode:

• Pa cathode: Au(CN)_2^- + e^- \kurudyi Au + 2CN^-

Ioni dzegoridhe mu aurocyanide complex inowana erekitironi uye inoiswa segoridhe resimbi pane cathode pamusoro.

• Pane anode: Zvichienderana nemamiriro ezvinhu, mvura oxidation kana oxidation yemamwe marudzi mune mhinduro inogona kuitika. Semuyenzaniso, 2H_2O \museve wekurudyi O_2 + 4H^+ + 4e^-

Zvakanakira Direct Electrowinning

1. Zviri nyore: Kuenzaniswa nematanho akawanda-matanho senge kabhoni adsorption inoteverwa nelution uye electrowinning (mune nyaya yeCIC), yakananga electrowinning inoderedza huwandu hwekuita kweyuniti. Izvi zvinorerutsa kuyerera kwese kwese, zvichiita kuti zvive nyore kushanda nekuchengetedza.

2. Mutengo - kubudirira: Nematanho mashoma ekuita, pane mukana weiyo yakaderera capital uye mutengo wekushandisa. Iko hakuna chikonzero chekudyara muhombe-yakakura kabhoni regeneration zvivakwa (semuCIC) kana kutenga huwandu hukuru hwezinc poda (sezviri muMerrill Crowe process).

3. High Purity Product: Iyo yakananga electrodeposition yegoridhe inogona kukonzera yakakwirira-kuchena goridhe dhipoziti pane cathode. Izvi zvinogona kuderedza kudiwa kwemaitiro ekuchenesa kwakadzika pasi, kuwedzera kuchengetedza mari.

4. Environmental Benefits: Nekubvisa kushandiswa kwezingi muMerrill Crowe process, kune kushoma chizvarwa chezinc - chine tsvina. Pamusoro pezvo, kurerutsa kwemaitiro acho kunogona kukonzera kudzikiswa kwekushandiswa kwemakemikari kwese uye kugadzirwa kwemarara.

Maitiro Kufunga

1. Solution Concentration: Kuwanda kwegoridhe mumhinduro yecyanide chinhu chakakosha. Nepo yakananga electrowinning inogona kuiswa kune mhinduro dzine huwandu hwakasiyana hwehuwandu hwegoridhe, huwandu hwepamusoro hunowanzo konzera kukurumidza deposition mitengo. Nekudaro, yakanyanya kuwanda yegoridhe inogona kuda yakakosha ma electrode dhizaini kuti ive nechokwadi chekuisa yunifomu.

2. Electrode Materials: Kusarudzwa kwezvinhu zve electrode zvakakosha. Stainless - simbi yeshinda inowanzoshandiswa sechinhu checathode chepamusoro penzvimbo yayo, iyo inobvumira kuiswa kwegoridhe. Kune iyo anode, zvinhu zvinoshingirira mukuora mune cyanide mhinduro, senge dimensionally stable anodes (DSA), inosarudzwa.

3. pH uye Tembiricha: Iyo pH ye cyanide mhinduro inoda kunyatsodzorwa. A zvishoma alkaline pH inowanzo chengetwa kudzivirira kuparara kwe cyanide. Tembiricha yemugadziriso inogona kukanganisawo mwero we electrowinning, uye tembiricha yakakwira inowanzo wedzera mwero wekuita asiwo inogona kuwedzera njodzi yekuora kwecyanide.

Maitiro Kuyerera

1. Kugadzirira Kugadzirisa: Mushonga une pamuviri we cyanide leach kubva pamurwi weLeaching kana mamwe maitiro ecyanidation anotanga aitwa pre - treatment. Izvi zvinogona kusanganisira kusefa kubvisa zvakaturikwa zvakasimba, sezvo izvi zvinogona kukanganisa maitiro e electrowinning uye kukonzera mapfupi - masekete pakati pemagetsi.

2. Electrowinning Cell: Iyo pre-yakarapwa mhinduro inozopihwa musero remagetsi. Iyo sero yakashongedzerwa neanode uye cathode. Sezvo magetsi achishandiswa, goridhe rinotanga kuisa pane cathode.

3. Goridhe Recovery: Kana imwe nguva yakakwana yegoridhe yaiswa pane cathode, cathode inobviswa muchitokisi. Iyo goridhe inogona kubviswa kubva mu cathode kana mechanical kana kemikari, zvichienderana nemhando ye cathode material. Goridhe rakabviswa rinobva rakwenenzverwa kuti riwane goridhe repamusoro-soro.

Zvinetso uye Ramangwana Maonero

1. Cyanide Management: Kunyangwe yakananga electrowinning ichipa zvakanakira, kushandiswa kwecyanide mune yakazara goridhe kuburitsa maitiro kuchiri kuunza njodzi kwezvakatipoteredza nekuchengetedza. Tsvagiridzo yeramangwana inogona kutarisa kubatanidza yakananga electrowinning neimwe nzira, isina muchetura leaching nzira.

2. Kushandiswa kwesimba: Iyo electrowinning process inoda huwandu hwakakosha hwesimba remagetsi. Kugadzira simba rakawanda - rinoshanda electrode zvinhu uye maseru magadzirirwo inzvimbo yekushingaira tsvakurudzo.

3. Kubudirira: Sezvakaita chero tekinoroji iri kusimukira, kukwidza yakananga electrowinning kubva murabhoritari - chiyero kusvika kumaindasitiri - chiyero chekushanda chinoda kunyatsogadziriswa kuti ive nechokwadi chekuita kunoenderana uye mutengo - kushanda.

Direct electrowinning yegoridhe kubva kucyanide solutions inomiririra kufambira mberi kwakakosha kwetekinoroji muindasitiri yemigodhi yegoridhe. Nekumwe kutsvagisa nekusimudzira kugadzirisa matambudziko aripo, ine mukana wekuva nzira inotonga ye kupora kwegoridhe munguva yemberi iri pedyo.