Zvido zveTekinoroji zveGranulation, Piling uye Kupfapfaidza muGold Pile Leaching process

The Goridhe murwi leaching process zvinosanganisira kuunganidzira zvicherwa zvegoridhe zvakaderera-giredhi kana mitsara inoyangarara pahwaro hwezvinhu uye kupfapfaidza Sodium cyanide mhinduro yekunyungudutsa goridhe mune ore uye kuidzosera kubva kune nhumbu mhinduro. Iyi nzira inonyanya kusanganisira kuvakwa kwenzvimbo yekuchenesa, kugadzirwa kweore (kupwanya kana granulation), kumisikidza, kupfapfaidza leaching, kudzoreredza goridhe kubva pamushonga wepamuviri, uye kuuraya hutachiona uye kuburitsa murwi wemarara. Munguva yeleaching process, akawanda ma paramita anofanirwa kudzorwa kuti awane zvakanaka mabhenefiti. Ichi chinyorwa chichasuma zvinodiwa zvehunyanzvi zve granulation, kuputira uye kupfapfaidza.

1. Granulation

Kuti ubudirire murwi wegoridhe leaching process, iyo leaching zvinhu zvinofanirwa kuve nepermeability yakanaka kubvumidza iyo cyanide mhinduro yekupfuura zvakaenzana nemurwi weore. Zvicherwa zvizhinji zvinoda kupwanyiwa kusvika pa25.4mm kana kutsetseka pamberi pegranulation kuti ibudise pachena goridhe riri muorivhi nekuvandudza mwero wekudzoreredza goridhe.

Munguva yegranulation, huwandu hwe lime yakashandiswa hunofanirwa kusvika pa pH kukosha pakati pe9.5 - 10.5. Nekuda kwekunyorova kwakanyanya kweore (ine mvura inodarika 10%) uye kusvibiswa kwakawanda mune ore, kuwanda kwe Sodium Cyanide inofanira kuwedzera panguva granulation. The concentration of sodium cyanide inodzorwa pa60 - 150 magiramu patani yegoridhe ore. Iyo yakazara mvura yemukati megranules kazhinji haifanire kudarika 30%, zvikasadaro magranules anowanzo kusunungura uye kupfava. Nguva yekurapa inofanira kunge inopfuura maawa makumi manomwe nemaviri. Kana kunaya panguva yegranulation, zviyo zvinofanira kuvharwa kudzivirira kurasikirwa kwegoridhe.

2. Kupepeta

Nzvimbo yegoridhe mirwi yeleaching inogona kuiswa pamateru, mumupata kana panzvimbo yakati sandara. Zvisinei, nokuda kwevhu rakati sandara, kutsetseka kwe3% - 5% kunodiwa. Kureba kwemurwi weore hakufaniri kunge kwakanyanyisa pakutanga, zvichida 3 - 4 mamita, uye inogona kuwedzerwa mushure mokunge chiyero cheLeaching chagadzikana.

Mushure mekuchenesa nekuyera pasi, mushonga wekudzivirira kudonha kwemvura unodiwa. Kuti matombo arambe achidonha, migero yekubuda kwemvura inofanirawo kuiswa yakatenderedza nzvimbo inodonhedzwa nemvura. Rutivi rwemubato wenzvimbo inodonhedzwa nemvura runogona kuiswa pahwaro hwakasimba hwemamita 0.5, uye wozoisa sodium. kabhoniMushonga unopfapfaidzwa pairi kuti iwedzere kushanda kwayo pakusabuda mvura.

3. Kupfapfaidza

3.1 Spray Concentration

Iyo agglomerated ore particles mushure me granulation haifanirwe kugezwa zvakare. Iyo pH kukosha kunofanirwa kugadziridzwa kuburikidza neiyo granulation process. Nekuda kwekuumbwa kwakaomarara kwegoridhe ores, kuwanda kwe sodium cyanide panguva yekutanga kupfapfaidza kunogona kuwedzera zvakakodzera. Inogona kudzorwa pa 0.1% - 0.08% panguva yepamusoro-soro (apo iyo goridhe leaching concentration yakanyanya), uyezve inogona kuderedzwa kusvika 0.08% - 0.06%. Muchikamu chekupedzisira, inogona kuderedzwa kusvika 0.04% - 0.02%. Iko kusanganiswa kwe sodium cyanide kunogona kugadziriswa chero nguva zvichienderana negoridhe yemukati mune nhumbu mhinduro.

3.2 Spray Cycle

Nguva yekupfapfaidza inowanzova maawa 7 - 8 pazuva, uye kazhinji haifanirwe kudarika maawa gumi (asi dosi inofanira kuderedzwa). Kazhinji, inopfapfaidzwa kweawa imwe yomira kweawa imwe kana kupfapfaidza kweawa imwe uye kumira kwemaawa maviri. Nguva yekupfapfaidza haifanirwe kurebesa, kuitira kuti murwi weore ugone kufema oxygen kana usingamwaya. Kana nguva yekupfapfaidza yakarebesa uye kuwanda kwacho kunowedzera huwandu hwemushonga, kuderedza kuwanda kwedoro raamai, uye kutambisa sodium cyanide. Panguva imwecheteyo, ichawedzera huwandu hwedoro raamai uye inokanganisa kugona kweadsorption yegoridhe-yakatakura kabhoni.

3.3 Kupfapfaidza Kusimba

Kusimba kwekupfapfaidza kunoenderana nenguva yekupfapfaidza uye huwandu hwekupfapfaidza. Kazhinji, simba rekupfapfaidza rinofanira kudzorwa pa6 - 20L/m2•awa (6 - 20L/m2×awa), uye kazhinji harifanirwe kudarika 25 - 30L/m2•awa (izvo zvinogona kuverengerwa zvichienderana nenzvimbo yekubvisa mvura, huwandu hwekupfapfaidza hwezuva nezuva nenguva). Kana simba rekupfapfaidza rakakwirira, richawedzera huwandu hwemvura inobereka, kuderedza huwandu hwegoridhe, uye kukanganisa kugona kwekunyungudutsa kwemvura. Yakagadziriswa Carbon (kazhinji, kugona kwekunyudza kabhoni yakakangwa kuri 8 - 10kg/t). Kana huwandu hwemushonga une mimba hwakakura, mukati menguva imwe chete yekunyudza, nekuda kwehuwandu hushoma hwegoridhe, huwandu hwekunyudza huchaderera uye nguva yekunyudza ichawedzerwa, izvo zvichawedzerawo basa uye mutengo wesystem yekunyudza ne electrolysis. Saka, huwandu hwekupfapfaidza haufanirwe kunge hwakanyanya uye huwandu hwekupfapfaidza haufanirwe kunge hwakanyanya.

Mukupedzisa, izvo zviri pamusoro ndizvo zvinodiwa zvehunyanzvi zve granulation, kusungirira uye kupfapfaidza murwi wegoridhe leaching process. Iyo nzira yegoridhe murwi leaching inoshandiswa zvakanyanya nekuda kwekuita kwayo kuri nyore, michina mishoma uye mutengo wakaderera. Mukugadzirwa chaiko, varidzi vemigodhi vanofanirwa kutarisisa kudzora maparamendi eimwe neimwe link kuti vaone mhedzisiro yakanaka yekuleaching.