Chii chinonzi Optimal Sodium Cyanide Concentration Range yeGoridhe Leaching?

Muindasitiri yekuchera goridhe, kuchekwa kwecyanide kunoramba kuri imwe yenzira dzinonyanya kushandiswa pakubvisa goridhe kubva muore. Sodium cyanide, kunyanya, inofarirwa nekuda kwekushanda kwayo, kugadzikana kwayo, uye mutengo wayo wakaderera. Kuona huwandu hwakakodzera hwesodium cyanide kwakakosha sezvo kunokanganisa zvakananga kushanda kwekubvisa goridhe, mari yekushanda, uye kufunga nezvezvakatipoteredza.

Theoretical Kufunga

Padzidziso, kunyungudika kwegoridhe mumushonga wecyanide kunotevera maitiro chaiwo emakemikari. Kuti gramu yega yega yegoridhe inyungudike, magiramu angangoita 0.92 eSodium Cyanide anodiwa zvichienderana nemaitiro emagetsi. Zvisinei, mumamiriro ezvinhu chaiwo, kudyiwa chaiko kweSodium cyanide kwakakwira zvakanyanya, kazhinji ka50 - 100 kupfuura huwandu hwedzidziso.

Zvinhu Zvinokanganisa Kunyatsoteerera

Ore Hunhu

1. Mineralogy yegoridhe : Rudzi rwezvicherwa zvegoridhe zviri muore rune basa rakakosha. Kana goridhe riri muchimiro chekugaya chakapfava, chakasununguka, chinoda huwandu hwakasiyana hwecyanide zvichienzaniswa negoridhe rinobatanidzwa nemaminerari esulfide kana zvimwe zvinhu zvinoramba. Semuenzaniso, mune dzimwe mitsipa yequartz ine goridhe, uko goridhe risingabhadhariswi - kugaya, huwandu hwakaderera hwecyanide hunogona kukwana.

2. Kukura Kwezvikamu Uye Kupinda Kwemvura : Zvicherwa zvakacheneswa zvinowanzova nenzvimbo yakakwirira, izvo zvinoita kuti pave nekubatana kwakanaka pakati pe sodium cyanide solution nezvicherwa zvegoridhe. Nekuda kweizvozvo, huwandu hwakaderera hwecyanide hunogona kushanda. Kusiyana neizvi, zvicherwa zvakacheneswa zvinogona kuda huwandu hwakawanda kuti zvive nechokwadi chekuti mvura yabuda zvakanaka. Pamusoro pezvo, kupinda kwezvikamu zvezvikamu zveore kunokanganisa kuyerera kwe cyanide solution kuburikidza neore, zvichikanganisa huwandu hunodiwa.

3. Kuvapo Kwemamwe Masimbi : Mhangura, kunyanya, inopindirana zvakasimba ne sodium cyanide. Inogona kushandisa cyanide yakawanda panguva yekubviswa kwayo. Pagiramu rega rega remhangura yakanyungudutswa, magiramu 2.3 kusvika 3.4 e cyanide anowanzodiwa. Mumatombo ane mhangura yakawanda, huwandu hwakawanda hwe sodium cyanide hunogona kudiwa kuti kuve nechokwadi chekuti kune cyanide yakakwana inowanikwa yekunyungudutswa kwegoridhe. Dzimwe simbi dzakadai se zinc, lead, uye iron dzinogonawo kukanganisa kushandiswa kwe cyanide, kunyangwe zvishoma.

Process Conditions

1. pH Level : pH ye leaching solution chinhu chakakosha. Sodium cyanide inonyungudika mumushonga, ichiburitsa hydrocyanic acid (HCN), inova gasi rine chepfu yakawanda. Mwero we hydrolysis unoenderana ne pH yemushonga. Pa pH ye10.5, 6.1% hydrocyanic acid chete inogadzirwa, nepo pa pH ye9.0. 67.1% inogadzirwa. Kuti kuderedza kurasikirwa kwecyanide kuburikidza ne hydrolysis uye kuve nechokwadi chekuti cyanide solution yakasimba, pH inowanzo chengetwa pakati pe11 ne12 mu gold CIP (Carbon-in-Pulp) plants. Izvi zvinewo simba pahuwandu hwakanaka hwe sodium cyanide, sezvo nzvimbo ine alkaline yakawanda ingada huwandu hwakanyanya kuti gold leaching ishande zvakanaka.

2. Kuwanda kweOkisijeni Yakanyungudutswa : Okisijeni inokosha pakunyungudutswa kwegoridhe mumushonga wecyanide. Kuita uku kunoda maion ecyanide (CN⁻) neokisijeni (O₂). Kunyunguduka kwakanyanya kweokisijeni patembiricha yemumba nekumanikidzwa i8.2 mg/L. Kana huwandu hweokisijeni yakanyungudutswa muslurry huri pasi pe4 mg/L, zvinogona kudzikamisa mwero wekunyungudutswa kwegoridhe. Muzviitiko zvakadaro, mhepo inogona kuiswa muslurry kana hydrogen peroxide inogona kuwedzerwa kuwedzera huwandu hweokisijeni. Chiyero cheokisijeni kucyanide chakakosha; kusaenzana kunogona kutungamira kudzikira kwehuwandu hwekubuda kweokisijeni. Sezvo huwandu hweokisijeni huchikanganisa reaction kinetics, zvinokanganisawo huwandu hwakanaka hwesodium cyanide. Kuwanda kweokisijeni kwakanyanya kunogona kubvumira huwandu hwakaderera hwecyanide, uye zvinopesana.

Typical Concentration Ranges muKudzidzira

1. MuCIP neCIL (Carbon-in-Leach) Maitiro : MuCIP kana CIL circuit yakajairika, apo goridhe rine simbi riri muchimiro cheslurry uye Carbon inoshandiswa kunyungudutsa goridhe rakanyungudutswa, sodium cyanide concentration inowanzo chengetwa iri pakati pe0.3 - 0.4 gramu pa litre (0.03 - 0.04%). Iyi concentration range yakawanikwa ichishanda kune mhando dzakasiyana dzesimbi pasi pemamiriro ekushanda akajairwa. Zvisinei, kune simbi dzakaoma kana dzine mwero wakanyanya wekusvibiswa, concentration inogona kugadziriswa kumusoro, dzimwe nguva kusvika pa0.6 - 0.8 gramu pa litre (0.06 - 0.08%).

2. Mukubvisa simbi muVat : Kubvisa simbi muVat kunowanzo shandiswa pakugadzira simbi dzakakora kana kuti kana simbi dzichigadzirwa muzvikamu zvakasiyana. Mukuita uku, huwandu hwesodium cyanide hunowanzo wedzera, hunosvika 1.0 gram pa litre (0.1%). Kuwanda kwacho kunotsiva nzvimbo yakaderera yesimbi dzakakora uye kunobatsira kuona kuti cyanide solution inogona kupinda musimbi nekunyungudutsa goridhe zvinobudirira.

3. Kubvisa marara : Pakubvisa marara kubva pamatanho ekare ekugadzirisa (sekunge mushure mekupatsanurwa kwegiravhiti), huwandu hwecyanide hunogona kusiyana zvichienderana nehuwandu hwegoridhe rasara uye mhando yemarara. Kazhinji, huwandu hwecyanide hunogona kubva pa0.5 - 2 kg/t yesimbi, iyo, kana yashandurwa kuita huwandu hwemvura, inogona kuva pakati pe0.05 - 0.2 gramu pa litre (0.005 - 0.02%). Kuwanda kwakaderera kunowanzo kukwana sezvo marara angave atogadziriswa kare, uye goridhe rasara rinowanikwa zviri nyore.

Zvakatipoteredza uye Kuchengetedzwa Zvinoreva

Ndichiri kutarisisa iyo yakakwana sodium cyanide yekumisikidza yegoridhe leaching, zvakakosha kufunga nezvezvakatipoteredza uye kuchengetedza zvinhu. Cyanide chinhu chine muchetura zvakanyanya, uye chero kuburitswa mumhepo kunogona kuve nemhedzisiro yakaoma. Kuchengeta yakaringana hakungobatsiri mukutorwa kwegoridhe kwakanaka chete asi zvakare kunoderedza huwandu hwecyanide inogona kunge iripo munzizi dzemarara. Pamusoro pezvo, kubata kwakanaka uye kuchengetedza sodium cyanide kwakakosha kudzivirira kurasika netsaona kana kuburitswa.

mhedziso

Huwandu hwakakwana hwe sodium cyanide yekubvisa gold hunosiyana zvichienderana nezvinhu zvakawanda, kusanganisira hunhu hweore nemamiriro ekushanda. Kazhinji, kune akawanda mashandisirwo ekubvisa gold akadai seCIP, CIL, uye vat leaching , huwandu hwacho hunotangira pa 0.03% - 0.1% (0.3 - 1.0 gramu pa litre). Zvisinei, kune imwe neimwe mineral ore body, zvinokurudzirwa kuita bvunzo dzakadzama dzemurabhoritari, dzakadai sebvunzo dzebhodhoro nedzema column, kuti uone nemazvo huwandu hwakakodzera hwe sodium cyanide. Izvi zvichaita kuti gold iwanikwe zvakanyanya uku uchideredza mari uye kukanganisa kwezvakatipoteredza.