Zvido zveTekinoroji zveGranulation, Piling uye Kupfapfaidza muGold Pile Leaching process

Maitiro ekubvisa goridhe kubva mugomba regoridhe anosanganisira kuunganidzira matombo egoridhe emhando yepasi kana kuti madonhwe emvura pasi pechinhu chepasi uye kupfapfaidza Sodium cyanide solution kuti inyungudise goridhe riri mugomba uye kuritora kubva mumushonga une mimba. Maitiro aya anosanganisira kuvaka nzvimbo yekudonhedza goridhe, kupwanya matombo (kupwanya kana kupwanya), kupwanya, kupfapfaidza, kudzoreredza goridhe kubva mumushonga une mimba, uye kubvisa hutachiona nekuburitsa murwi wemarara. Munguva yekudonhedza dombo, zvinhu zvakawanda zvinofanirwa kudzorwa kuti zviwane mhedzisiro yakanaka yekuwedzera goridhe. Chinyorwa chino chichatsanangura zvinodiwa zve granulation, kupwanya dombo uye kupfapfaidza.

1. Granulation

Kuti nzira yekubvisa gold pile leaching ibudirire, zvinhu zvinobviswa zvinofanira kunge zvine mukana wakanaka wekupinda mukati meore solution kuti cyanide solution ipfuure zvakaenzana nemuore pile. Maore mazhinji anofanira kupwanywa kusvika 25.4mm kana kuti akapfava asati apwanywa kuti goridhe riri muore rionekwe uye kuwedzera mwero wekudzoserwa kwegoridhe.

Munguva yekuumbwa kwematombo, huwandu hwe lime hunofanira kusvika pa pH iri pakati pe9.5 - 10.5. Nekuda kwehunyoro hwakawanda hwematombo (ane mvura inodarika 10%) uye tsvina yakawanda iri mumatombo, huwandu hweSodium Cyanide hunofanira kuwedzerwa panguva yekuumbwa kwematombo. Kuwanda kwe sodium cyanide kunodzorwa pa 60 - 150 magiramu pa tani yegoridhe. Huwandu hwemvura hwemagranules hahufanirwe kudarika 30%, zvikasadaro magranules anogona kusunungura nekupfava. Nguva yekupora inofanira kupfuura maawa makumi manomwe nemaviri. Kana mvura ikanaya panguva yekuumbwa kwematombo, matombo anofanira kuvharwa kudzivirira kurasikirwa negoridhe.

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 nekuenzanisa ivhu, mushonga wekudzivirira kudonha kwemvura unodiwa. Kuti matombo arambe achidonha, migero yekubuda kwemvura inofanirawo kuiswa yakatenderedza nzvimbo inodonhedzwa nemvura. Rutivi rwenzvimbo inodonhedzwa nemvura runogona kuiswa pahwaro hwakasimba hwemamita 0.5, uye mvura inosanganiswa ne sodium Carbon inopfapfaidzwa pairi kuti iwedzere kushanda kwayo.

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•h (6 - 20L/m2×awa), uye kazhinji harifanirwe kudarika 25 - 30L/m2•h (izvo zvinogona kuverengerwa zvichienderana nenzvimbo yenzvimbo yekudonhedza mvura, huwandu hwekupfapfaidza hwezuva nezuva nenguva). Kana simba rekupfapfaidza rakakwirira, richawedzera huwandu hwemushonga une mimba, kuderedza huwandu hwegoridhe, uye kukanganisa kugona kwekupfapfaidza kweActivated Carbon (kazhinji, kugona kwekupfapfaidza kweactivated carbon i8 - 10kg/t). Kana huwandu hwemushonga une mimba hwakakura, mukati menguva imwechete yekupfapfaidza, nekuda kwehuwandu hwegoridhe hushoma, huwandu hwekupfapfaidza huchaderera uye nguva yekupfapfaidza ichawedzerwa, izvo zvichawedzerawo basa uye mutengo we desorption uye electrolysis system. Nokudaro, huwandu hwekupfapfaidza hahufanirwe kunge hwakanyanya uye frequency yekupfapfaidza haifanirwe kunge yakanyanya.

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.