Iiparamitha eziphambili ezichaphazela inqanaba lokuBuyisa iGolide kwiSodium Cyanide Leaching

intshayelelo

Ukuhluza i -sodium cyanide yindlela esetyenziswa kakhulu kwishishini lemigodi yegolide ukukhupha igolide kwi-ore. Nangona kunjalo, ukusebenza kakuhle kokubuyiswa kwegolide kule nkqubo kuchaphazeleka ziiparameter ezininzi ezibalulekileyo. Ukuqonda ezi parameters kubalulekile ekwenzeni ngcono inkqubo yokuhluza, ukwandisa ukubuyiswa kwegolide, kunye nokunciphisa iindleko zemveliso. Eli nqaku liza kujonga izinto eziphambili ezichaphazela izinga lokubuyiswa kweGolide ngexesha lokuhluza i -sodium cyanide.

Ukucoca Ukulunga

Ngaphambi kwenkqubo yokukhutshwa kwe-cyanide, intsimbi yegolide kufuneka ilungiswe kwangaphambili, kunye nokusila inyathelo eliphambili. Injongo yokugaya kukufezekisa ukuchithwa kwe-monomer yegolide, ukuhlula kwiiminerali ze-ganggue kangangoko kunokwenzeka. Xa igolide kwintsimbi ekrwada ifakwe kakuhle okanye igqunywe, ukucoleka okufanelekileyo kokusila kubalulekile. Ukuba ukucola kurhabaxa kakhulu, amasuntswana egolide asenokungavezwa ngokupheleleyo, nto leyo ekhokelela ekuvuthululeni okungaphelelanga kunye nesantya esisezantsi sokubuyiswa kwegolide. Kwelinye icala, ukugaya ngokugqithisileyo akunyusi nje kuphela iindleko zokusila kodwa kuzisa neempembelelo ezimbi. Amasuntswana angaphezulu komhlaba anokuthi avelise ukungcola okuvuza ngakumbi kwi-leachate, enokuthi isebenze kunye nesisombululo se-cyanide, esikhokelela kwinkunkuma ye-cyanide. Ngaphaya koko, ukucola okungaphezulu kunokubangela ubunzima kukwahlulwa okuqinileyo kolwelo, kwaye kunokukhokelela ekuphulukaneni negolide enyityilisiweyo. Ngokubanzi, kwintsimbi ekrwada yegolide enegolide yendalo ecolekileyo, ecolekileyo, ubungakanani besuntswana lokusila elingu-38 μm kunye nomlinganiselo womxholo wama-75% unokuqinisekisa isiphumo esingcono sokuvuza ngelixa ulawula iindleko zokusila.

Umthamo weSodium Cyanide

Ubungakanani beSodium Cyanide eyongeziweyo kwinkqubo yokukhupha igolide bunempembelelo enkulu kwizinga lokubuyisa igolide. Ngaphakathi koluhlu oluthile, ubungakanani be-cyanide buhambelana nezinga lokukhupha igolide. Xa umxholo we-cyanide uphantsi, isiphumo sokukhupha igolide asilungile, kwaye isantya sokukhupha sicotha. Oku akunyusi nje kuphela ixesha elifunekayo lokukhupha igolide kodwa kunokubangela ukuba igolide ingaphumi ngokupheleleyo, ngaloo ndlela kunciphisa izinga lokubuyisa igolide. Nangona kunjalo, ukuba ubungakanani be-cyanide buphezulu kakhulu, emva kokuba ukusebenza kwegolide yokukhupha igolide kufikelele kwinqanaba elithile, ukunyuka kwesantya sokubuyisela igolide akuyi kucaca. Endaweni yoko, kuya kubangela ukuchithwa kwe-cyanide kwaye kwandise iindleko zemveliso. Umzekelo, xa kukhutshwa i-gold concentrate kwi-gold ore enobukhulu obuncinci be-particle, i- dosage ye-sodium cyanide ifanelekile ngakumbi kwi-1.5 - 3.0 kg/t. Kwimveliso yokwenyani, izityalo zemigodi kufuneka zichonge ubungakanani obufanelekileyo be -sodium cyanide ngokweempawu ze-ore yazo kunye novavanyo lokuzuza.

Isixa seLime

Ikalika yongezwa kwisisombululo se-cyanide njenge-alkali ekhuselayo. I-Cyanide ions kwisisombululo ineekhemikhali ezingazinzanga kwaye kulula ukuguquguquka njengegesi ye-hydrogen cyanide, eya kubangela ukulahlekelwa kwesisombululo se-sodium cyanide. Ngokufaka i-lime, i-pulp inokugcinwa kwi-alkalinity efanelekileyo, enceda ukuphucula ukuzinza kwesisombululo se-cyanide. Ngokohlalutyo lovavanyo, izinga lokuvuza kwegolide nalo liphuculwe kakhulu emva kokongeza ikalika. Xa ubungakanani bekalika bongeziweyo buyi-2 kg/t nangaphezulu, ixabiso le-pH lepulp liphakathi kwe-11 - 12. Nangona kunjalo, ukuba isixa sekalika sikhulu kakhulu, sinokuba nefuthe elibi kwinkqubo ye-leaching, njengokutshintsha izinto ezibonakalayo kunye neekhemikhali ze-pulp, ezinokuchaphazela ukusabela phakathi kwe-cyanide negolide.

Leaching Pulp Concentration

Ukuxinwa kwe-pulp ye-leaching yinto echaphazela ngokuthe ngqo isantya se-leaching kunye nokusebenza kakuhle kwegolide. Ngokubanzi, xa uxinaniso lwepulp ye-leaching luphantsi, ukumanzi kwepulp kulungile, okubangela uqhagamshelwano phakathi kwesisombululo secyanide kunye namasuntswana egolide, kwaye ngaloo ndlela ukusebenza kakuhle kokugxila kwegolide kuya kuba phezulu. Nangona kunjalo, le meko idinga ukwanda kwenani le-arhente eyongeziweyo. Ngexesha elifanayo, ubukhulu bezixhobo kunye neendleko zotyalo-mali nazo ziya kwanda. Ngokuchasene noko, ukuba i-pulp concentration iphezulu kakhulu, i-viscosity ye-pulp iya kwanda, ukumanzi kuya kuba mbi, okuya kuthintela ukusasazwa kwesisombululo se-cyanide kunye noqhagamshelwano namasuntswana egolide, okukhokelela ekunciphiseni kwesantya se-leaching kunye nokusebenza kakuhle kwegolide. Kwintsimbi ekrwada yegolide enobungakanani besuntswana elicolekileyo, ukugxilwa kwepulp kunokugcinwa malunga ne-20% - 33% ukuqinisekisa isiphumo esihle sokuvuza. Kwimveliso yangempela, izityalo zemigodi zinokuhlengahlengisa ngokufanelekileyo ukugxininiswa ngokwemeko ethile, kodwa akufanele kube phezulu kakhulu.

Ixesha lokuphumla

Ixesha le-leaching likwayinto ebalulekileyo echaphazela izinga lokubuyisela igolide kwinkqubo ye-cyanidation. Ukukhetha ixesha elifanelekileyo lokucoca kunokuqinisekisa ukuba amasuntswana egolide achithwa ngokupheleleyo. Nangona kunjalo, ngexesha lokuchithwa kweengqungquthela zegolide, ezinye izinto ezingcolileyo kwi-pulp nazo ziya kuqhubeka nokuchithwa. Njengoko ixesha lokuvuza lisanda, ukunyibilika okuqhubekayo kunye nokuqokelelana kobu kungcola kunokuphazamisana nokunyibilika kwegolide, kwaye kuthintele nokuphuma kwegolide. Ukongeza, ixesha elide kakhulu le-leaching lifuna ukucwangciswa kwezixhobo ezinkulu kunye neziza, eziya kwandisa iindleko zemveliso. Kwintsimbi yegolide enobukhulu obucolekileyo, kungcono ukugcina ixesha le-cyanidation leaching malunga neeyure ezi-4. Ukuba ixesha lokuvuza lingaphezulu kweeyure ezingama-24, ukuvuza kwegolide kunokwenzeka ukuba kuthintelwe, kwaye ukuxinana kwe-ion yegolide kulwelo oluxabisekileyo nako kuya kuncipha.

isiphelo

Kwinkqubo yokukhupha i-Sodium cyanide ukuze kukhutshwe igolide, iiparameter ezifana nokugaya ubuncinci, umthamo we-sodium cyanide, ubungakanani belayimu, uxinano lwe-leaching pulp, kunye nexesha lokukhupha zonke ezi zinto zidlala indima ebalulekileyo ekumiseleni izinga lokubuyisa igolide. Izityalo zemigodi kufuneka zenze uvavanyo oluneenkcukacha lokuzuza ngokweempawu ze-ore yazo ukuze ziphucule ezi parameter. Ngokwenza njalo, azinakuphucula kuphela izinga lokubuyisa igolide kodwa zikwanciphisa iindleko zemveliso kunye nefuthe lokusingqongileyo, zifezekise uphuhliso oluzinzileyo kushishino lwemigodi yegolide.