IiMfuno zobuGcisa zeGranulation, ukuFakwa kunye nokutshiza kwiNkqubo yeGold Pile Leaching

Inkqubo yokukhupha igolide kwiipile ibandakanya ukufaka igolide ekumgangatho ophantsi okanye iintsalela ze-flotation kwisixhobo esisisiseko kunye nokutshiza isisombululo seSodium cyanide ngokujikelezayo ukuze kunyibilikiswe igolide kwi-ore kwaye kubuyiselwe kwisisombululo esikhulelweyo. Le nkqubo ibandakanya ikakhulu ukwakhiwa kwendawo yokukhupha igolide, unyango lwangaphambi kwe-ore (ukutyumza okanye ukuqhekeza), ukuqokelela, ukutshiza, ukubuyiswa kwegolide kwisisombululo esikhulelweyo, kunye nokubulala iintsholongwane kunye nokukhupha inqwaba ye-ore. Ngexesha lenkqubo yokukhupha, kufuneka kulawulwe iiparameter ezininzi ukuze kufezekiswe iziphumo ezilungileyo zokuphucula. Eli nqaku liza kwazisa iimfuno zobugcisa zokukhupha igolide, ukuqokelela kunye nokutshiza.

1. Igranulation

Ukuze inkqubo yokukhupha igolide kwi-ore iphumelele, izinto zokukhupha igolide kufuneka zibe nokuvuleka kakuhle ukuze isisombululo se -cyanide sidlule ngokulinganayo kwi-ore pile. Uninzi lwee-ore kufuneka zityunyuzwe zibe yi-25.4mm okanye zibe ncinci ngaphambi kokuba ziqhekeke ukuze kubonakale igolide ekwi-ore kwaye kuphuculwe izinga lokubuyiswa kwegolide.

Ngexesha lokuxubana, ubungakanani belayimu esetyenzisiweyo kufuneka bufikelele kwixabiso le-pH phakathi kwe-9.5 - 10.5. Ngenxa yokufuma okuphezulu kwe-ore (enomxholo wamanzi ongaphezulu kwe-10%) kunye nokungcola okuninzi kwi-ore, uxinzelelo lwe -Sodium Cyanide kufuneka lunyuswe ngexesha lokuxubana. Uxinzelelo lwe -sodium cyanide lulawulwa malunga ne-60 - 150 grams ngetoni ye-ore yegolide. Umxholo wamanzi uwonke we-granules ngokubanzi akufuneki udlule kwi-30%, kungenjalo ii-granules zinokukhululeka kwaye zithambe. Ixesha lokunyanga kufuneka libe ngaphezulu kweeyure ezingama-72. Ukuba imvula iyana ngexesha lokuxubana, iinkozo kufuneka zigqunywe ukuze kuthintelwe ukulahleka kwegolide.

2. Ukuxobula

Indawo yokucoca imfumba yegolide inokumiselwa kwindawo ethambekileyo, kwintlambo okanye kumhlaba othe tyaba. Nangona kunjalo, kumhlaba othe tyaba, ithambeka le-3% - 5% liyafuneka. Ukuphakama kwemfumba ye-ore akufanele kube phezulu kakhulu ekuqaleni, ngokukhethekileyo i-3 - 4 yeemitha, kwaye inokunyuswa emva kokuba izinga lokuhlamba lizinzile.

Emva kokucoca nokulinganisa umhlaba, kufuneka unyango olungangenisi amanzi. Ukukhusela inqwaba yentsimbi, kufuneka kubekwe imijelo yokukhupha amanzi ezikhukulayo ijikeleze indawo yokukhuhla amanzi. Umaleko womqamelo wendawo yokukhuhla amanzi ungabekwa malunga ne-0.5m ubukhulu kwisiseko esixineneyo, uze emva koko kutshizwe isisombululo se -sodium Carbon ukuze kuphuculwe ukusebenza kwayo kokungangenisi amanzi.

3. Ukutshiza

3.1 Izixilo zokutshiza

I-agglomerated ore particles emva kwegranulation akufanele ihlanjwe kwakhona. Ixabiso le-pH kufuneka lihlengahlengiswe ngenkqubo yegranulation. Ngenxa yokwakheka okuntsonkothileyo kweentsimbi zegolide, ukuxinwa kwe-sodium cyanide ngexesha lokutshiza kokuqala kunokunyuswa ngokufanelekileyo. Inokulawulwa kwi-0.1% - 0.08% ngexesha lexesha eliphakamileyo (xa i-concentration leaching yegolide iphezulu), kwaye ke ingancitshiswa ibe yi-0.08% - 0.06%. Kwinqanaba lokugqibela, lingancitshiswa libe yi-0.04% - 0.02%. I-concentration ye-sodium cyanide inokulungiswa nangaliphi na ixesha ngokuhambelana nomxholo wegolide kwisisombululo esikhulelweyo.

3.2 Umjikelo wokutshiza

Ixesha lokutshiza lidla ngokuba ziiyure ezisi-7 ukuya kwezisi-8 ngosuku, kwaye ubukhulu becala akufunekanga lidlule iiyure ezili-10 (kodwa idosi kufuneka incitshiswe). Ngokuqhelekileyo, i-spray i-1 iyure kwaye imise i-1 iyure okanye i-spray i-1 iyure kwaye imise iiyure ze-2. Ixesha lokutshiza akufunekanga libe lide kakhulu, ukwenzela ukuba i-ore pile ikwazi ukuphefumla ioksijini xa ingatshizi. Ukuba ixesha lokutshiza lide kwaye i-frequency iphezulu, iya kwandisa umthamo wesisombululo, ukunciphisa ukuxinwa kotywala komama, kunye nokuchitha i-sodium cyanide. Kwangaxeshanye, iya kwandisa umthamo wotywala komama kwaye ichaphazele umthamo we-adsorption wekhabhoni elayishwe ngegolide.

3.3 Ubunzulu bokutshiza

Ubunzulu bokutshiza buhambelana nexesha lokutshiza kunye nobungakanani bokutshiza. Ngokubanzi, ubunzulu bokutshiza kufuneka bulawulwe kwi-6 - 20L/m2•h (6 - 20L/m2×yure), kwaye uninzi akufuneki ludlule kwi-25 - 30L/m2•h (enokubalwa ngokwendawo yendawo yokuntywila, ubungakanani bokutshiza bemihla ngemihla kunye nexesha). Ukuba ubunzulu bokutshiza buphezulu, buya kwandisa umthamo wesisombululo esikhulelweyo, bunciphise uxinano lwegolide, kwaye buchaphazele umthamo wokutshiza we- Activated Carbon (ngokubanzi, amandla okutshiza e-activated carbon yi-8 - 10kg/t). Ukuba umthamo wesisombululo esikhulelweyo mkhulu, ngaphakathi kwexesha elifanayo lokutshiza, ngenxa yoxinano lwegolide oluphantsi, ubuninzi bokutshiza buya kuncipha kwaye ixesha lokutshiza liya kwandiswe, nto leyo eya kwandisa umthwalo womsebenzi kunye neendleko zenkqubo yokutshiza kunye ne-electrolysis. Ke ngoko, ubuninzi bokutshiza akufuneki bube bukhulu kakhulu kwaye ubuninzi bokutshiza akufuneki bube phezulu kakhulu.

Ukuqukumbela, ezi zingasentla ziimfuno zobugcisa zegranulation, imfumba kunye nokutshiza kwinkqubo yegolide yemfumba yemfumba. Indlela yokukhutshwa kwemfumba yegolide isetyenziswa kakhulu ngenxa yenkqubo yayo elula, izixhobo ezimbalwa kunye nexabiso eliphantsi. Kwimveliso yangempela, abanikazi bemigodi kufuneka banikele ingqalelo ekulawuleni iiparitha zekhonkco ngalinye ukuqinisekisa iziphumo ezilungileyo zokucoca.