Iingcebiso zokunciphisa i-Sodium Cyanide kwiZityalo zeGold Processing

Okwangoku, uninzi lwezityalo ezicubungula igolide zisebenzisa iSodium cyanide njengekhemikhali yokufunxa igolide. Indlela yegolide ye-cyanidation iyamkelwa ngabanini bemigodi yegolide abaninzi kwihlabathi liphela ngenxa yenkqubo yayo elula kunye nesantya esiphezulu sokubuyiselwa kwayo.

1. Ukuqinisa i-Inflation kunye noPhucula uMgangatho woBonelelo lwe-Oxygen

Ukwandisa umoya kunye nokwanda kokunikezelwa kweoksijini kunokunciphisa ukusetyenziswa ngokungeyomfuneko kwe -cyanide engamanzi . Okwangoku, uninzi lwezityalo ze-cyanidation zegolide zisebenzisa i-compressor yomoya engenawo uxinzelelo oluphantsi (0.2mpa) ukuze kunikezelwe umoya, kwaye umthamo wokunikezelwa komoya uphakathi kwe-0.5-1.0m3/min tank. Ukuze uphucule umgangatho wokunikezelwa komoya, ubeka i-hood encinci emngxunyeni ekupheleni kombhobho wokunikezelwa komoya ukuze uvelise inani elikhulu lamaqamza amancinci, okanye ufake i-valve yokujonga ukuthintela ukubuyela umva.

2. Lawula ngokungqongqo iBanga leCopper le-Raw Ore

I-Copper isebenzisa inxalenye enkulu ye-cyanide kwinkqubo yokukhuhla. Umzekelo, isityalo se-gold cyanidation sinomgangatho we-copper we-0.548% kwi-ore eluhlaza, kwaye utywala obungumama bokukhuhla kokuqala buqulethe i-1161mg/L copper, edla i-37.6% yokusetyenziswa kwe-cyanide yonyaka. Ngenxa yomxholo ophezulu we-copper kwisisombululo sokunyibilikisa, ukuze kugcinwe umsebenzi wokukhuhla igolide wesisombululo, uxinzelelo lwe -Sodium Cyanide kwi-slurry kufuneka lonyuswe ngokufanelekileyo, nto leyo eyandisa ukusetyenziswa kwe -sodium cyanide . Ke ngoko, ukulawula umxholo we-copper kwi-ore eluhlaza akunakunciphisa kuphela i-sodium cyanide esetyenziswa ngokunyibilikisa ubhedu, kodwa kukwanciphisa kakhulu uxinzelelo lwe-sodium cyanide kwisisombululo sokukhuhla.

Ukuze kuncitshiswe ibakala lobhedu, unokuliphatha ngokujikeleza okanye ngezinye iindlela, emva koko uvuze igolide emva kokwahlulwa kobhedu.

3. Lawula umlinganiselo we-CN- kunye ne-O2 Concentration kwi-Slurry

Ngexesha lenkqubo yokukhutshwa kwegolide, umoya kunye ne-sodium cyanide kufuneka yongezwe ukuqinisekisa ukuchithwa kwegolide. Izinga lokusasazwa kwegolide kwisisombululo alixhomekanga kuphela kwi-concentration ye-CN- kunye ne-O2 kwisisombululo, kodwa nakwi-concentration ye-CN- ngeyunithi yegolide, ukuxinwa kwe-O2 echithwe. indawo engaphezulu yegolide kunye nobukhulu bombane ophindwe kabini.

CN–/O2=4x(I-coefficient yokusasazwa kweoksijini enyibilikisiweyo/i-sodium cyanide diffusion coefficient)

=4×(2.76×10-5cm/s ÷1.83×10-5cm/s)=4×1.5=6

Lo mlinganiselo ubizwa ngokuba ngumda onyibilikisiweyo wexabiso leconcentration ye-ion yegolide enyibilikisiweyo.

Kwiintlobo ezahlukeneyo ze-ore, ixabiso layo linokulungelelaniswa kuluhlu lwe-4.6 ukuya kwi-7.4 ukumisela umlinganiselo ongcono wenzuzo. Ukuba i-sodium cyanide eninzi okanye umoya wongezwa ngexesha lenkqubo yokucoca, ayiyi kwandisa izinga legolide kwaye ibangele inkunkuma. Ngoko ke, kwinkqubo yokukhutshwa kwegolide, kudla ngokuyimfuneko ukuhlalutya kunye nokulawula i-cyanide yamahhala kunye nomxholo we-oksijini kwisisombululo sokugcina umlinganiselo wezo zimbini malunga ne-6.

4. Ukuseka iBalance Dosage yeCyanide

Isodium cyanide yeyona arhente yokusetyenziswa kwenkqubo yegolide yecyanidation. Ngoko ke, ibhalansi ye-sodium cyanide dosage kufuneka ifundwe rhoqo. Okubizwa ngokuba yi-cyanide balance ibhekisela kwibhalansi phakathi kwe-cyanide ekhutshwe kwisisombululo se-leaching kunye nokusetyenziswa kwangempela kwe-sodium cyanide, ehambelana nenkqubo yezibonakaliso zobugcisa, iindleko zezoqoqosho, unyango lokusingqongileyo kunye nezinye iindleko.

Ukongeza ekubunjweni kwee-complexes ezahlukeneyo kunye neekhompawundi, ukulahlekelwa kwe-sodium cyanide kukwabandakanya i-adsorption ye-sludge yodongwe, i-adsorption yamacandelo amaminerali kunye nokuphunyuka kwexabiso elincinci kakhulu le-hydrogen cyanide. Ukusetyenziswa kwangaphambili kufuneka kubangele malunga ne-90%. Ukuba iphantsi kweli xabiso, kufuneka kubangelwe kumgangatho we-sodium cyanide, amacandelo e-ore eluhlaza, kunye nokulinganisela kwamanzi, okanye umlinganiselo osebenzayo, okanye "ukuwisa, ukuvuza, ukuxubha kunye nokuvuza".

5. Lawula iCalcium Oxide (CaO) enengqiqo

Kwinkqubo yokukhutshwa kwegolide ene-oxidative, i-lime kufuneka yongezwe.Kwaye kubaluleke kakhulu ukugcina i-concentration ye-calcium oxide efanelekileyo. Imisebenzi yayo ephambili yile:

I-CaO inokunyusa ixabiso le-pH yesisombululo se-leach, iyanciphisa i-concentration ye-HCN eveliswayo kwaye inciphisa ukuguquguquka kwegesi ye-HCN.

Ngenxa yokongezwa kwe-Ca2 + kwisisombululo, izinga le-leaching lobhedu liye lancipha kakhulu, likhusela ukubunjwa kwe-Fe (CNS) 4. kunye nokuxinwa kwe-CNS-ion kwisisombululo kuncipha. I-Ca2 + inqanda ukudibanisa kwe-CN- kunye ne-Cu kunye ne-S, ngaloo ndlela inciphisa ngokufanelekileyo ukusetyenziswa kwe-cyanide.

Emva kovavanyo oluphindaphindiweyo, iingcali zikholelwa ukuba kunengqiqo ukongeza i-calcium oxide 12 g / kg.

ukuququmbela

Ezi zingasentla ziindlela ezi-5 zokunciphisa inani le-sodium cyanide kwizityalo zegolide ze-cyanidation. Kwimveliso yokwenyani, isixa sezinto ezahlukeneyo sinokuhlengahlengiswa ngokufanelekileyo ngokwemeko yokwenyani ukunciphisa ukusetyenziswa kwe-sodium cyanide, ukonga iindleko, kunye nokunciphisa umonakalo wamanzi amdaka e-cyanide kokusingqongileyo.

Ukuba unayo nayiphi na imibuzo malunga nalo mxholo ungasentla, okanye ufuna ukwazi i-, ungabonisana nenkonzo yabathengi kwi-intanethi okanye uthumele umyalezo, siya kuqhagamshelana nawe ngokukhawuleza!