IiCyanidation Leaching Techniques ze-High-Sulfur kunye ne-High-Arsenic Gold Ores

Ukunyangwa kwe-high-sulfur kunye ne-arsenic ores yegolide ephezulu kudala ingumngeni onzima kwintsimi yokulungiswa kwezimbiwa. Ngenxa yobume bezimbiwa ezintsonkothileyo kunye nomxholo ophezulu wokungcola, iindlela zemveli ze-cyanidation zihlala zisokola ukukhupha igolide kunye nesilivere. Eli nqaku liza kunika isingeniso esicacileyo kwiindlela ezininzi zokuhlamba ezifanelekileyo kwi-high-sulfur kunye ne-arsenic ores yegolide ephezulu, ejolise ekuncedeni abasebenzi basezimayini baqonde ngcono kwaye basebenzise obu buchwepheshe.

Iimpawu ze-High-Sulfur kunye ne-High-Arsenic Gold Ores

I-high-sulphur kunye ne-high-arsenic ores yegolide iqulethe isixa esikhulu se-sulfide kunye ne-arsenides. Oku kungcola akuchaphazeli nje kuphela ukusebenza kakuhle kwegolide kunye nesilivere kodwa kubangela ingozi enkulu kwindalo. Ngoko ke, xa ujongene ne-ores enjalo, ukuhamba kwenkqubo ekhethekileyo kuyadingeka ukuze kuphuculwe izinga lokubuyisela igolide kunye nesilivere kunye nokunciphisa iimpembelelo zokusingqongileyo.

Indlela yokuGqamisa i-Oxidative

Indlela yokugcoba i-oxidative yindlela esetyenziswa ngokuqhelekileyo yokunyanga i-ores yegolide ephezulu yesulfure kunye ne-arsenic ephezulu. Le ndlela yenza i-sulfure kunye ne-arsenic kwi-ore ibe yigesi okanye i-oksidi eqinileyo ngokutshisa okunobushushu obuphezulu, ngaloo ndlela isusa ukungcola. Emva kokuqhotsa, ubume be-ore bukhululeka, nto leyo eyenza kube lula ukuvuza kwegolide nesilivere.

Amanyathelo athile endlela yokuqhotsa i-oxidative ngala alandelayo:

1. Ukutshisa okunobushushu obuphezulu kuqhutyelwa kwi-high-sulfur kunye ne-high-arsenic concentrate yegolide efunyenwe ngokujikeleza ukususa isulfure kunye ne-arsenic.

2. Intsimbi ekrwada egcadiweyo ivaswa i-asidi ephezulu ukuze inyibilike ukungcola okuninzi.

3. Emva koko i-ore ehlanjiweyo ifakwa kwi-cyanidation leaching, apho igolide nesilivere zinyibilikiswa yi -cyanide zize zingene kwisisombululo.

Indlela ye-Thiourea Leaching

Indlela ye-thiourea leaching yinkqubo evelayo yokutsalwa kwegolide enetyhefu ephantsi, ifaneleke ngakumbi ukunyanga iintsimbi zegolide ezinomthamo ophezulu we-arsenic kunye nesulfure. I-Thiourea kwisisombululo se-acidic inokunyibilikisa igolide kunye nesilivere ngokukhawuleza, inetyhefu ephantsi, kwaye kulula ukuyihlaziya. Xa kuthelekiswa nendlela yesiqhelo ye-cyanidation, indlela ye-thiourea ayinachuku kumacandelo amaminerali afana ne-antimony, i-arsenic, ubhedu, kunye nesulfure. Ngaloo ndlela, ineenzuzo ezicacileyo xa uphatha i-high-sulfur kunye ne-high-arsenic ores yegolide.

Amanyathelo athile endlela ye-thiourea leaching ngala alandelayo:

1. I-Gold-bearing sulfide concentrate ifumaneka ngokujikeleza.

2. I-flotation concentrate itsalwa ngesisombululo se-thiourea ukubuyisela igolide nesilivere.

3. Igolide nesilivere kwisisombululo sokuhluza zifunxwa zii-ion exchange resins okanye i-activated Carbon zize emva koko ziphathwe ngendlela elandelayo.

Indlela yokufundisa ngemfumba

Indlela yokuhluza iHeap yindlela yokuhluza eneendleko eziphantsi zemveliso kunye nokusebenza okulula, efanelekileyo ekunyangeni i-ore yegolide ene-sulfur ephezulu kunye ne-arsenic ephezulu. Le ndlela ibandakanya ukufaka i-ore kwindawo elungiselelwe kwangaphambili kunye nokutshiza okanye ukugquma ngesisombululo sokuhluza i-cyanide, okuvumela isisombululo ukuba sigqume i-ore size sivelise isiphumo sokuhluza.

Amanyathelo athile endlela yokuvumbulula imfumba ngala alandelayo:

1. Intsimbi ekrwada iyatyunyuzwa ukuya kutsho kumlinganiselo othile ize ifunjwe kwisiza.

2. Intsimbi ekrwada ifafazwe okanye ixutywe ngesisombululo se-cyanide, kwaye isisombululo sityhutyha ngentsimbi ekrwada ukuvelisa isiphumo sokuvuza.

3. Isisombululo sokuhluza siyaqokelelwa, kwaye igolide nesilivere ziyafunyanwa ngokusebenzisa ii-ion exchange resins, i-Activated Carbon adsorption, okanye i-zinc replacement.

Indlela yokuLeaching evuselelweyo

Indlela yokukhupha i-stirred leaching yindlela esebenzayo yokucoca ilungele ukunyanga i-ores ene-oxidized ore okanye i-sulfide ore calcines. Le ndlela isebenzisa isisombululo se-sulfuric acid esixutywe ngokwentelekiso ukugqobhoza intsimbi ekrwada kwitanki yokuvuza enesixhobo sokushukumisa. Ngenxa yokuvuselela okwaneleyo, isantya se-leaching sikhawuleza, kwaye izinga le-leaching liphezulu.

Amanyathelo athile endlela yokufundisa evuselelweyo zezi zilandelayo:

1. Intsimbi ekrwada iyatyunyuzwa ibe ngamasuntswana amahle (-75um accounting ye-90%) ize yongezwe kwitanki yokukhupha.

2. I-leaching edibeneyo iqhutyelwa ngesisombululo esincinci se-sulfuric acid. Uxinaniso lobhedu kwisisombululo se-leaching luphezulu kwaye lunokusetyenziswa ngokuthe ngqo kwi-electrowinning yobhedu.

3. Isisombululo se-leaching sifumana unyango olulandelayo lokubuyisela igolide nesilivere.

isiphelo

Ukunyangwa kwe-high-sulfur kunye ne-high-arsenic ores yegolide kufuna ukwamkelwa kwenkqubo ekhethekileyo yokuhamba ngokukhawuleza ukuphucula izinga lokubuyisela igolide kunye nesilivere kunye nokunciphisa iimpembelelo zokusingqongileyo. Indlela yokuqhotsa i-oxidative, indlela ye-thiourea leaching, i-heap leaching method, kunye ne-stired leaching method zonke ziindlela zonyango ezisebenzayo.