Chii chinonzi Optimal pH Kukosha kweCyanide Leaching?

Cyanide leaching yave iri dombo repakona pakutorwa kwegoridhe nesirivheri kubva mumicherwa kubva payakaitwa mumaindasitiri muna 1887. Iyi nzira inotsamira pachiyero chakapfava chemakemikari akasiyana-siyana uye zvakatipoteredza, nepH kukosha kwechigadziriso chakamira separameter yekunyanya kukosha.

Iyo Kemikari Rationale Kuseri kwepH muCyanide Leaching

Cyanide, kazhinji muchimiro che Sodium Cyanide (NaCN) kana potassium cyanide (KCN), inoshanda seyekutanga leaching agent. Nekudaro, kudyidzana kwayo negoridhe nesirivheri kunokonzerwa zvakanyanya neiyo pH level. Cyanide inowanikwa mukuenzanisa nehydrogen cyanide (HCN), muchetura wakanyanya uye unopisa. Munzvimbo ine acidic (yakaderera pH), chiyero chemakemikari chinoshanduka chakananga kukugadzirwa kweHCN gasi. Izvi hazvingounze njodzi dzakakomba dzekuchengetedza asiwo zvinoderedza kuwanikwa kweiyo cyanide ion, iyo inodiwa pakunyungudutsa goridhe nesirivha.

Yegoridhe inoshanda uye Silver extract, mushonga wacho unofanirwa kuchengetwa mune alkaline state. Kana iyo pH yakakwira, cyanide inonyanya kuramba iri muchimiro chayo ionic, ichiibvumira kuti iumbe yakagadzika macomplexes ane goridhe nesirivha. Munguva yeLeaching process, hydroxide ions inogadzirwa, ichiwedzera kupa kune alkalinity yemhinduro.

Kusarudza iyo Optimal pH Range

Zvidzidzo zvakawanda uye maitiro emaindasitiri zvakaratidza yakakwana pH renji ye Cyanide leaching. Kazhinji, kukosha kwepH pamusoro pe10.5 kunoonekwa sekukosha, uye maoparesheni mazhinji anovavarira kuchengetedza pH iri pakati pe11 ne12. Heino chikonzero:

• Kuwedzera Goridhe Kuparara: Pa pH mukati meiyi chiyero, mwero wekunyungudika kwegoridhe unogadziriswa. Kutsauka kubva paurongwa uhwu kunogona kutungamirira kukuderera kukuru kwekuita basa rekuchera. Semuenzaniso, kana pH inodonha pasi pe10.5. kuumbwa kweHCN gasi kunoderedza kuwanda kwemahara cyanide ions, kunonoka kuita negoridhe.

• Kuderedza Kushandiswa kweCyanide: Kushandiswa kweCyanide kwakabatana zvakanyanya neiyo pH level. Yakaderera pH kukosha inogona kukonzera yakawedzera cyanide kushandiswa sezvo cyanide inova isinganyanyi kushanda pakugadzira macomplexes. Nekuchengetedza yakakwira pH, kugadzikana kwecyanide complexes kunovimbiswa, kuderedza zvisina basa Cyanide kushandiswa.

• Kufunga Zvekuchengetedza: Kubva pakuchengetedza maonero, kuchengetedza pH iri pamusoro pe10.5 kwakakosha. HCN gasi ine muchetura zvakanyanya, uye kunyange shoma shoma inogona kuuraya. Nekudzora pH mukati meiyo yakakurudzirwa chiyero, kuumbwa kweiyi gasi rine njodzi kunoderedzwa, kuchengetedza hutano nekuchengetedzeka kwevashandi mumigodhi uye nzvimbo dzekuchera.

Zvinhu Zvinokonzera Optimal pH

• Ore Composition: Akasiyana ores anogona kunge aine akasiyana tsvina uye zvicherwa zvinogona kukanganisa iyo yakakwana pH. Semuyenzaniso, ores ane yakakwira sarufa yemukati angangoda akati siyanei pH gadziriso, sezvo sarufa - ine makomisheni inogona kuita nemushonga wecyanide uye nekupesvedzera nharaunda yese yemakemikari.

• tembiricha: Kupisa kweiyo leaching process kunogona kukanganisa iyo yakakwana pH. Sezvo tembiricha ichichinja, kunyungudika kweokisijeni uye chiyero chekuchinja kwemakemikari kunoshandurwa. Kazhinji, sezvo tembiricha inowedzera, iyo yega-hydrolysis yecyanide inowedzera, uye solubility yeokisijeni inoderera. Izvi zvinogona kuda kugadziridzwa kushoma mupH kuti ichengetedze yakakwana leaching mamiriro. Nekudaro, mazhinji cyanide leaching maitiro anoitwa pane ambient tembiricha (kutenderera 15 - 30 °C) kudzivirira yakawandisa cyanide kuora uye kurasikirwa neokisijeni.

Nzira dze pH Kudzora

• Lime (CaO) uye Caustic Soda (NaOH): Aya ndiwo anonyanya kushandiswa reagents kugadzirisa uye kuchengetedza pH mune cyanide leaching. Lime, kana yawedzerwa kumvura, inoumba calcium hydroxide, iyo inopindirana neine acidic zvikamu mumhinduro kuwedzera pH. Caustic soda (NaOH), hwaro hwakasimba, inogona zvakare kushandiswa kusimudza pH nekukurumidza. Sarudzo pakati pezviviri izvi inotsamira pazvinhu zvakaita semutengo, kuwanikwa, uye zvinodikanwa zveore iri kugadziriswa.

• pH Sensors: Kuve nechokwadi chekutonga kwepH chaiyo, mashandiro emazuva ano emigodhi anovimba nepamusoro pH sensors. Aya masensa anogona kuenderera mberi achitarisa pH yemhinduro yeLeaching uye nekupa chaiyo-nguva data. Kubva pane iyi data, vashandisi vanogona kugadzirisa kuwedzera kwepH - kutonga reagents kuchengetedza yakakwana pH renji.

Mukupedzisa, iyo yakakwana pH kukosha kwecyanide leaching iri pakati pe 11 - 12. Ukoshi uhwu hunotarwa nekubatanidzwa kwemakemikari maitiro, kuchengetedza zvinodiwa, uye kudiwa kwekuita goridhe nesirivha kutorwa. Nekunyatso kudzora pH uye mamwe ma paramita, makambani emigodhi anogona kukwirisa kudzoreredzwa kwesimbi dzakakosha uku achideredza njodzi dzenharaunda nekuchengetedza.