Kuchera Goridhe: Matanho kubva kuOre kuenda kuIngot muCarbon Leaching

Akabatwa kabhoni Inowedzerwa mutangi rekudonhedza mvura, zvichiita kuti kudonhedza mvura nekudonhedza mvura zviitike panguva imwe chete, kureva kudonhedza mvura uchidonhedza mvura, iyo inonzi nzira yecarbon-in-leach (CIL). Yakagadzirwa zvichibva panzira yecarbon-in-pulp, inopa zvakanakira zvekuderedza huwandu hwematangi ekudonhedza mvura nekupfupisa kufamba kwemaitiro. Nekuda kweizvozvo, inogona kuderedza mari yekudyara mukuvaka uye mari yekugadzira. Kudonhedza mvura nekudonhedza mvura panguva imwe chete kunovandudza mamiriro ekugadzirwa kwegoridhe, fa.CILkuchenesa uye kunyura kwegoridhe. Iyo kabhoni-mu-leach nzira inonyanya kusanganisa mashandiro akadai se Kugadzirira kweLeaching Raw Materials, Stirred Leaching uye countercurrent carbon adsorption, desorption yegoridhe-yakatakura kabhoni, Electrowinning uye Electrolysis, kunyunguduka uye kugadzira ingot, uye kugadzirwazve kwekabhoni.

01 Kugadzirira kweLeaching Raw Materials

Kana iyo kabhoni-in-leach yekubvisa goridhe process inogamuchirwa, kugadzirira kwekugadzira zvinhu mbishi kunosanganisira kupwanya kwemuviri uye kugaya kupatsanura. Kazhinji, mune kabhoni-mu-leach goridhe kudhirowa maitiro, kutsetseka kwekufashukira kubva mukugaya kupatsanurwa kunowanzoita zvekuti 85 - 95% inopfuura ne -200 mesh.

02 Debris Removal Operation

Zvimedu zvehuni nezvimwe zvinhu zvinoomesesa zviri mu pulp zvinogona kukonzera kuvharika kwemapaipi nemasevhisi. Uyezve, zvinowanzo tora goridhe riri mu pulp uye kurisanganisa nekabhoni yakawanda. Saka, zvinofanirwa kubviswa zvisati zvabviswa. Kana zvichidikanwa, kukora kwe pulp uye kuwedzerwa kwezvinodzivirira chikero zvinodiwa. Chinodzivirira chikero chinogonawo kuderedza kukora pamusoro pe Yakagadziriswa Carbon uye sikirini. Kazhinji, mabasa maviri ekubvisa marara anoiswa mukukuya, zvichiteerana pakuzara kwechikamu chekutanga nechechipiri chekukuya. Midziyo yekubvisa marara inonyanya kushandisa masikirini anodedera epakati nepakati. Mukushanda kwekutanga kwekubvisa marara, masikirini anotenderera uye masikirini anotenderera anogona kushandiswawo. Saizi yeburi resikirini resikirini yekubvisa marara inofanira kunge iri diki sezvinobvira uku ichivimbisa kuti hapana kuwanda pamusoro pesikirini.

03 Pre-leaching thickening Operation

Kana kuwanda kwekusarudzika kwekugaya kwakawanda kuri 18 - 22%, haina kufanira kunangana leaching, uye pulp thickening inofanira kuitwa. Zvinokurudzirwa kushandisa yakakwirira-inoshanda thickener ine diki tsoka uye yakakwirira thickening kunyatsoshanda.

04 Yakasimudzwa Leaching uye Countercurrent Carbon Adsorption

Iyo kabhoni-mu-leach nzira inoratidzwa nekufambira mberi kwakafanana kwegoridhe leaching uye adsorption mashandiro. Huwandu hwematanho ekudonha anowanzo 6 - 10 (iyo yakatarwa uye huwandu hwematangi ekudonha anotemerwa zvichienderana nekugadzirisa kugona kweiyo concentrator). Kubva Sodium Cyanide ichangobva kuwedzerwa kuTank No.1. huwandu hwegoridhe rakabikwa hushoma. Saka, zvirimwa zvakawanda zvekabhoni-mu-leach zvinoshandisa Tank No.1 setangi rekutanga-leaching, uye matangi anotevera sematangi ekudonha uye adsorption. Imwe neimwe leaching uye adsorption tangi ine kabhoni - yekuparadzanisa skrini yekuparadzanisa kabhoni uye pulp. Iyo pulp inoyerera kumberi, uye iyo activated kabhoni inoyerera ichidzokera kumashure, ndiko kuti, pulp uye activated kabhoni zviri mukupikisa adsorption. Fresh activated carbon inowedzerwa kubva kune yekupedzisira leaching uye adsorption tank, uye iyo goridhe - yakarodha kabhoni inoburitswa kubva kune yekutanga leaching uye adsorption tank. Iyo activated kabhoni inova goridhe - yakatakurwa kabhoni nekushambadza goridhe mu pulp. Mushure mekunge iyo adsorption yapera, iyo pulp ine goridhe - yakarodha kabhoni inopihwa kune kabhoni - inoburitsa skrini nekusimudza kwemhepo. Iyo kabhoni-inobvisa skrini inoparadzanisa iyo activated kabhoni uye pulp. Mushure mekuongorora nekusuka, inotumirwa kune desorption uye electrowinning kushanda. Mushure mekudsorption nenzira iyi, giredhi regoridhe remushonga wepulp rinowanzo 0.01 - 0.03g/m³. Kazhinji, iyo inowanzo shandiswa activated kabhoni inonyanya kukokonati - shell activated carbon, iyo ine madiki madiki, yakakwirira chiitiko, kupfeka kuramba, uye kuvandudzwa. Iyo ine yakanakisa adsorption performance uye abrasion - kuramba simba, inogona kuwedzera adsorption rate ne30%, inonatsiridza zvakanyanya mwero wekudzoreredza goridhe mumasimbi akabatana, uye inosimudzira zvakanyanya mabhenefiti ehupfumi uye kugona kugadzira.

05 Desorption yeGoridhe - yakatakura Carbon, Electrowinning uye Electrolysis

Iyo goridhe - yakatakura kabhoni uye pulp inosimudzwa kune kabhoni - yekuparadzanisa skrini (kazhinji mutsara wemutsara sikirini inozunguza) nepombi inoburitsa kabhoni kana yekusimudza mhepo. Vanogezwa nemvura yakachena pachiratidziro kuti vaparadzanise kabhoni uye pulp. Iyo goridhe - yakarodha kabhoni inopinda kabhoni - tangi yekuchengetera, uye pulp uye yekusuka mvura inopinda yekutanga - nhanho adsorption tank. Kune akati wandei nzira dzekubvisa goridhe - yakarodha kabhoni. Parizvino, iyo yakakwirira-tembiricha uye yakakwirira-kumanikidza desorption nzira inowanzoshandiswa. Ndokureva kuti, anion iyo inoshambadzirwa nyore nyore neyakagadzirwa kabhoni inowedzerwa kune desorption system kubvisa Au(CN)₂⁻ uye kuwana desorption yegoridhe. Iyo yakakosha mvura inowanikwa nekusvibisa goridhe - yakarodha kabhoni inodzoserwa neionization kuti iwane goridhe rakasimba.