Chii chinonzi Optimal Sodium Cyanide Concentration Range yeGoridhe Leaching?

Muindasitiri yemigodhi yegoridhe, cyanide Leaching inoramba iri imwe yenzira dzinoshandiswa zvakanyanya pakuchera goridhe kubva mumatombo. Sodium cyanide, kunyanya, inofarirwa nekubudirira kwayo, kugadzikana, uye mutengo wakaderera. Kusarudza zvakanakisisa sodium cyanide kutarisisa kwakakosha sezvo kuchikanganisa kushanda zvakanaka kwekutorwa kwegoridhe, mutengo wekushandisa, uye kufunga kwezvakatipoteredza.

Theoretical Kufunga

Nechifungidziro, kunyungudika kwegoridhe mune cyanide mhinduro kunotevera chaiyo kemikari kuita. Kuti giramu rimwe nerimwe regoridhe rinyungudutswe, anenge 0.92 magiramu e Sodium Cyanide zvinodiwa zvichibva pane electrochemical reactions. Nekudaro, mune chaiyo - mamiriro epasirese, iyo chaiyo yekushandisa ye Sodium cyanide yakakwira zvakanyanya, kazhinji 50 - 100 times the theoretical amount.

Zvinhu Zvinokanganisa Kunyatsoteerera

Ore Hunhu

1. Gold Mineralogy: Mhando yemaminerari egoridhe aripo mune ore anoita basa rakakosha. Kana iyo goridhe iri mune yakatsetseka-yakaomeswa, yemahara-kugaya fomu, inoda yakasiyana cyanide concentration kana ichienzaniswa negoridhe inosanganiswa nemaminerari esulfide kana zvimwe zvinhu zvinoramba. Semuenzaniso, mune imwe goridhe - inobereka quartz tsinga, uko goridhe rinenge rakasununguka - kugaya, yakaderera cyanide concentrations inogona kukwana.

2. Particle Saizi uye Permeability: Yakanatswa-yakaomeswa ores kazhinji ine yakakwira pamusoro penzvimbo, iyo inobvumira kuwirirana kwakanyanya pakati pe sodium cyanide mhinduro uye zvimedu zvegoridhe. Nekuda kweizvozvo, yakaderera cyanide concentration inogona kushanda. Mukupesana, coarser - grained ores ingangoda yakakwira kusungirirwa kuti ive nechokwadi chekuzara. Pamusoro pezvo, kupindirana kwezvimedu zveore kunokanganisa kuyerera kweiyo cyanide mhinduro kuburikidza neore, ichipesvedzera kusungirirwa kunodiwa.

3. Kuvapo Kwemamwe Simbi: Mhangura, kunyanya, inobata zvakasimba ne sodium cyanide. Inogona kudya yakakura yakawanda yecyanide panguva yekuita leaching. Kune yega yega yemhangura yakanyungudutswa, 2.3 kusvika 3.4 magiramu ecyanide anowanzo kudiwa. Mune ores ine yakakwira mhangura yemukati, iyo yakakwira sodium cyanide concentration inogona kuve yakakosha kuti ive nechokwadi chekuti kune yakakwana cyanide inowanikwa yekunyungudika kwegoridhe. Mamwe masimbi akadai se zinc, lead, uye simbi anogonawo kukanganisa mashandisirwo ecyanide, kunyangwe kusvika padiki.

Process Conditions

1. pH Chikamu: Iyo pH yeiyo leaching mhinduro chinhu chakakosha. Sodium cyanide hydrolyzes mumushonga, inogadzira hydrocyanic acid (HCN), inova gasi rine muchetura. Chiyero che hydrolysis chinoenderana ne pH yemhinduro. Pa pH ye10.5. chete 6.1% hydrocyanic acid inogadzirwa, nepo pH ye9.0. 67.1% inogadzirwa. Kudzikisa kurasikirwa kwecyanide kuburikidza nehydrolysis uye kuve nechokwadi kugadzikana kweiyo cyanide mhinduro, iyo pH inowanzo chengetwa pakati pegumi nerimwe negumi nemaviri mugoridhe CIP (Carbon - in - Pulp) zvidyarwa. Izvi zvinewo mhedzisiro pane yakakwana sodium cyanide concentration, seyakawanda alkaline nharaunda ingangoda kukwirisa zvishoma kuti ishande. goridhe richidonha.

2. Yakanyungudutswa Oxygen Concentration: Okisijeni yakakosha pakuparara kwegoridhe mune cyanide mhinduro. Kuita kunoda ese ari maviri cyanide ions (CN⁻) uye oksijeni (O₂). Kunyanya kunyungudika kweokisijeni pane tembiricha yekamuri uye kumanikidza ndeye 8.2 mg/L. Kana iyo yakanyungudika yeokisijeni muslurry iri pasi pe4 mg/L, inogona kudzikamisa mwero wekunyungudika kwegoridhe. Mumamiriro ezvinhu akadaro, mhepo inogona kuiswa mu slurry kana kuti hydrogen peroxide inogona kuwedzerwa kuwedzera kuwedzera kweokisijeni. Kuenzana kweokisijeni kune cyanide kwakakosha; kusaenzana kunogona kukonzera kudzikira kweyero yekudonha. Sezvo huwandu hweokisijeni huchikanganisa maitiro ekuita kinetics, inokanganisawo iyo yakakwana sodium cyanide concentration. Kuwedzerwa kweokisijeni yepamusoro kunogona kubvumira kuderera zvishoma kwecyanide, uye zvakasiyana.

Typical Concentration Ranges muKudzidzira

1. MuCIP uye CIL (Carbon - in - Leach) Maitiro: Mudunhu reCIP kana CIL, uko dombo rine goridhe riri muchimiro chetsvina uye kabhoni Iyo inoshandiswa kunyudza goridhe rakanyungudutswa, huwandu hwesodium cyanide hunowanzo chengetwa muhuwandu hwe0.3 - 0.4 gramu pa litre (0.03 - 0.04%). Huwandu uhwu hwehuwandu hwakawanikwa huchishanda kune mhando dzakasiyana dzematombo pasi pemamiriro ekushanda akajairwa. Zvisinei, kune matombo akaomarara kana ayo ane mwero wakanyanya wekusvibiswa, huwandu hwacho hunogona kugadziriswa kumusoro, dzimwe nguva huchisvika 0.6 - 0.8 gramu pa litre (0.06 - 0.08%).

2. MuVat Leaching: Vat leaching inowanzo shandiswa kune yakaomesesa - yakaomeswa ores kana kana ore ichigadziriswa mumabhechi. Mukuita uku, iyo sodium cyanide concentration inowanzokwira, yakatenderedza 1.0 gramu parita (0.1%). Iyo yakakwira yekumisikidza inotsiva iyo inogona kudzika pasi penzvimbo yakaomarara ore zvimedu uye inobatsira kuve nechokwadi chekuti cyanide mhinduro inogona kupinda muore nekunyungudutsa goridhe zvine mutsindo.

3. For Tailings Cyanidation: Pakuisa cyanide kubva kumatanho ekutanga ekugadzirisa (senge mushure mekupatsanurwa kwegiravhiti), iyo cyanide concentration inogona kusiyana zvichienderana neyakasara yegoridhe yemukati uye chimiro chemiswe. Kazhinji, iyo cyanide concentration inogona kubva pa 0.5 - 2 kg / t ye ore, iyo, kana ichishandurwa kuva mhinduro yekugadzirisa, inogona kuva muhuwandu hwe 0.05 - 0.2 gramu parita (0.005 - 0.02%). Iyo yakaderera yekumisikidza kazhinji inokwana sezvo miswe inogona kunge yatove yakarapwa, uye yasara yegoridhe inosvikika.

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

Iyo yakakwana sodium cyanide yekumisikidza renji yegoridhe leaching inosiyana zvichienderana nezvakawanda zvinhu, kusanganisira ore maitiro uye maitiro ekuita. Kazhinji, kune yakajairika goridhe - leaching mashandiro akadai CIP, CIL, uye vat leaching, iyo yakasungwa inobva ku0.03% - 0.1% (0.3 - 1.0 gramu parita). Nekudaro, kune yega yega ore muviri, zvinokurudzirwa kuita yakadzama marabhoritari bvunzo, senge bhodhoro roll uye makoramu bvunzo, kunyatsoona iyo yakanyanya kufanira sodium cyanide concentration. Izvi zvinoita kuti goridhe ridzorerwe zvakanyanya uku uchideredza mitengo uye kukanganisa kwezvakatipoteredza.