I-Lead oxide iphucula ukuLeaching kweGolide kwi-Cyanide Tailings

intshayelelo

I-Cyanidation yinkqubo esetyenziswa ngokubanzi yokukhupha igolide kwi-ores. Nangona kunjalo, iintsila zecyanide zidla ngokuba nesixa esithile segolide eshiyekileyo, ekunzima ukuyibuyisela ngenxa yempembelelo yezimbiwa ezinxulumeneyo. Ukuphucula ukusebenza kakuhle kwegolide ukusuka i-cyanide intsalela ibaluleke kakhulu ekusetyenzisweni ngokutsha kobutyebi kunye neenzuzo zoqoqosho. Kuphando lwakutsha nje, kufunyaniswe ukuba i-oxide ekhokelela inokudlala indima entle ekwandiseni ukukhukuliseka kwegolide kwiintsila zecyanide.

Ingxaki yexabiso eliphantsi leGolide yokuLeaching kwiCyanide Tailings

Owona mceli mngeni uphambili ekufumaneni igolide kwintsalela yecyanide ilele kubume bemineralogical complex. I-cyanide eseleyo kwi-tailings inokubangela ukuba igolide iphendule kunye ne-sulfides yentsimbi edibeneyo (njenge-pyrrhotite). Le mpendulo yenza ifilimu yeAu/Sx yokudlula kumphezulu wamasuntswana egolide. Le filimu ye-passivation isebenza njengesithintelo, ithintela unxibelelwano olusebenzayo phakathi kwegolide kunye nesisombululo se-cyanide, oko ke kukhokelela kwisiqhelo esisezantsi. izinga lokuvuza yegolide.

Njani iLothe oxide iphucula iGold Leaching

I-Chemical Reaction Mechanism

I-Lead oxide ithatha inxaxheba kwiindlela ezininzi zeekhemikhali ngexesha lenkqubo yokukhupha. Okokuqala, ioksidi yelothe inokusabela ngefilim yokudlula eyenziwe kumphezulu wegolide. Le mpendulo iphula ifilimu ye-passivation, iyiguqule ibe ziityuwa ezinyibilikayo. Ngenxa yoko, indawo yegolide iphinda ibonakale, ivumela i-cyanide ukuba iphendule ngegolide. Okwesibini, i-lead oxide inokusebenza njenge-oxidant kwinkqubo ye-leaching. Xa kukho i-lead oxide, amandla e-oxidation yenkqubo ayahlengahlengiswa, nto leyo iluncedo kwi-oxidation yegolide ukwenza i-soluble gold cyanide complexes.

I-Electrochemical Mechanism

Kukho umahluko onokubakho wombane phakathi kwegolide kunye nemveliso yokunciphisa i-lead oxide. Lo mahluko onokwenzeka wenza ukuba ukubunjwa kwebhetri yokuqala ngaphakathi kwenkqubo yokukhupha. Kule bhetri iphambili, igolide isebenza njenge-anode kwaye ingena kwi-oxidation, ngelixa imveliso yokunciphisa i-lead oxide isebenza njenge-cathode. Le nkqubo ye-electrochemical, eyaziwa ngokuba yi-corrosion, ikhawuleza ngokukhawuleza ukuchithwa kwegolide, ngaloo ndlela iphucula izinga lokutsalwa kwegolide.

uQinisekiso loMfuniselo

Izinto zoMfuniselo kunye neendlela

Abaphandi bakhethe iisampulu ezimele i-cyanide tailings ukwenzela imifuniselo. Iisampulu zeentsalela zezimbiwa zaye zaphawulwa okokuqala ukumisela ukwakheka kwezimbiwa kunye nomxholo wegolide. Emva koko, izixa ezahlukeneyo ze-load oxide zongezwa kwinkqubo ye-cyanide leaching. Iimeko zokuvuza, ezifana nexesha lokuvuza, ubushushu, kunye nokuxinana kwe-cyanide, zalawulwa ngononophelo. Uluhlu lweemvavanyo ezihambelanayo lwenziwa ukuqinisekisa ukuchaneka kweziphumo. Ukongeza, iindlela zokuhlalutya eziphucukileyo, ezinje ngokuskena i-electron microscopy (SEM) kunye neX-ray photoelectron spectroscopy (XPS), zisetyenziselwe ukuhlalutya i-morphology yomphezulu kunye notshintsho lokwakheka kweekhemikhali zamasuntswana egolide ngaphambi nasemva kokuphuma.

Iziphumo zovavanyo

Iziphumo zovavanyo zibonise ukuba ukongezwa kwe-lead oxide kwandisa kakhulu ukusebenza kakuhle kwegolide kwimisila yecyanide. Xa kuthelekiswa neqela elilawulayo ngaphandle kokudibanisa i-oxide ekhokelela, i ukuvuza kwegolide izinga linyuke ngepesenti ephawulekayo. Umzekelo, kweminye imifuniselo, izinga legolide linyuka ukusuka kwixabiso eliphantsi ukuya ngaphezulu kwe [X]%. Ngexesha elifanayo, ukusetyenziswa kwe Isodium cyanide nayo yancitshiswa ukusa kumlinganiselo othile. Uhlalutyo lwe-SEM kunye ne-XPS luphinde lwaqinisekisa ukuba i-lead oxide iye yasabela ngokwenene ngefilimu yokudlula kumphezulu wegolide, kwaye imichiza emitsha yavela kumphezulu wamasuntswana egolide emva kokongezwa kwe-oxide yelothe, eyayihambelana nendlela yokusabela ecetywayo.

Ithemba lesicelo

Ukufunyaniswa kokusetyenziswa kwe-oxide yelothe ukunyusa ukuvuzwa kwegolide kwiintsila zecyanide kunemibono ebanzi yokusetyenziswa. Kwishishini lezimayini, obu buchwepheshe bunokusetyenziswa kwizityalo zonyango ezikhoyo ze-cyanide tailings. Ngokungongeza nje i-oxide ye-lead kwinkqubo yokuvuza, izinga lokubuyisela igolide linokuphuculwa ngaphandle kokuphuculwa kwezixhobo ezinkulu. Oku akugcini nje ukwandisa ixabiso loqoqosho lwemithombo ye-tailings kodwa kunciphisa impembelelo yokusingqongileyo ebangelwa ukugcinwa kwexesha elide leentsalela eziqulethe igolide. Ngaphezu koko, le ndlela inokwandiswa kunyango lwezinye iintsimbi zegolide eziphikisayo, zibonelela ngesisombululo esitsha sokutsalwa ngokufanelekileyo kwemithombo yegolide.

Ukuqukumbela, i-lead oxide ibonisa amandla amakhulu ekwandiseni ukutsalwa kwegolide kwiintsila zecyanide. Ngokuqondwa nzulu kwendlela yokuphucula kunye nokwandisa okuqhubekayo kweemeko zovavanyo, obu bugcisa bulindeleke ukuba budlale indima ebalulekileyo kuphuhliso lwexesha elizayo loshishino lwemigodi yegolide.