Basa reHydrogen Peroxide muSodium Cyanide Leaching process

ziviso

Munyaya yekubvisa goridhe nedzimwe nzira dzekugadzirisa simbi, kuburitsa cyanide , kunyanya ne sodium cyanide , kwave kuri nzira inoshandiswa zvakanyanya kweanopfuura zana remakore. Maitiro aya, ayo anogadzira soluble metal - cyanide complexes, anoshanda asi anotarisana nematambudziko akati wandei. Dambudziko guru ikukurumidza kwekuita zvishoma nezvishoma uye kudiwa kweoxygen yakakwana yekunyungudutsa simbi dzakadai segoridhe. Apa ndipo pakabuda hydrogen peroxide (H₂O₂) sechinhu chinobatsira pakuvandudza maitiro ekubvisa cyanide.

Izvo zvakakosha zveCyanide Leaching

Cyanide leaching inoshanda nekuti cyanide ions inogona kuita nesimbi kuti iumbe yakagadzika uye inonyungudika. Kana zvasvika pakubvisa goridhe, okisijeni inoita basa rakakosha semumiriri weoxidizing. Inobatsira kushandura goridhe kuita fomu rinogona kusanganiswa neiyo cyanide ions, zvichikonzera kunyungudika kwakaoma kunogona kugadziridzwa zvakare kuti uwane goridhe. Nekudaro, mune akawanda ores, iyo okisijeni inongowanikwa kubva kumhepo kazhinji haina kukwana. Kushaikwa uku kunotungamirira kumaitiro anononoka uye kubviswa kwesimbi kusina kukwana.

Iyo Hydrogen Peroxide Inobatsira sei muCyanide Leaching

1. Oxygen Supply

Hydrogen peroxide inhengo ine oxidizing ine simba. Kana yawedzerwa kune cyanide leaching solution, inoputsika uye inobudisa oxygen. Iyi yekuwedzera okisijeni inopa zvakanyanya kuwedzera oxidation yesimbi panguva yekuita leaching. Mune zvicherwa zvine zvicherwa zve sulfide, semuenzaniso, kuokisiswa kweaya sulfide neokisijeni kwakakosha pakusunungura goridhe mukati. Okisijeni inoburitswa nehydrogen peroxide inokwanisa kukurumidzira danho reoxidation iyi, zvichiita kuti zvive nyore kuti cyanide iite negoridhe gare gare.

2. Kumhanyisa Mwero weLeaching

Zvidzidzo zvakaratidza kuti hydrogen peroxide inogona kuwedzera kumhanya kwese kweiyo cyanide leaching process. Haingopi oxygen yakawedzerwa; inobatanidzwawo mukuita kwemakemikari kunoputsa zvidimbu zvekudzivirira pamusoro pezvikamu zve ore. Dzimwe nguva, simbi sulfides kana zvimwe zvicherwa zvinoumba danda pagoridhe - rinotakura zvimedu, izvo zvinomisa cyanide kusvika kune goridhe. Hydrogen peroxide inogona kuita nezvikamu izvi, kungave nekuaisa oxidizing kana nekuaparadzanisa nekuita kwemahara radicals anogadzirwa panguva yekuora kwayo. Izvi zvinobvumira cyanide ions kuti iwane goridhe zviri nyore, nokudaro zvichiwedzera mwero wekunyungudutswa kwegoridhe.

3. Kuderedza Kushandiswa kweCyanide

Muchinyakare cyanide leaching, yakawanda cyanide inoshandiswa kwete chete mukuita negoridhe asiwo mukuita kwepadivi nemamwe maion esimbi aripo muore, semhangura, zingi, nesimbi. Aya maitiro eparutivi anoderedza kushanda kwegoridhe - cyanide reaction uye kuwedzera mutengo wakazara weiyo leaching process. Hydrogen peroxide inogona kubatsira kuderedza kushandiswa kwecyanide nenzira mbiri. Kutanga, nekusimudzira oxidation yegoridhe, inosimudzira kuumbwa kwegoridhe - cyanide complex nekukurumidza, ichisiya nguva shoma yekuti cyanide iite pamwe nemamwe masimbi. Chechipiri, hydrogen peroxide inogona kushandura chimiro chemamwe ayoni esimbi anopindira kuitira kuti asaite zvishoma necyanide. Semuenzaniso, inogona kushandura ferrous ions kuita ferric ions. Ferric ions inogadzira macomplexes asina kugadzikana ane cyanide, achidzikisa huwandu hwe cyanide hwakaraswa mukusabereka mativi maitiro.

Nyaya Dzidzo uye Uchapupu Hwekuedza

Kuedza kwakawanda murabhoritari uye kuyedzwa kwemaindasitiri kwakaratidza kushanda kwehydrogen peroxide mucyanide leaching. Mune imwe ongororo yezvakaoma - kugadzira goridhe ore, kuwedzera hydrogen peroxide kune cyanide leaching mhinduro yakawedzera goridhe leaching mwero ne20 - 30% zvichienzaniswa neyekare cyanide leaching ine mhepo chete. Nguva yekuvhara yakaderedzwawo zvakanyanya, kubva pamazuva akati wandei kusvika kumaawa mashoma.

Mukushandiswa kwemugodhi wegoridhe muindasitiri, kushandisa hydrogen peroxide mukubvisa cyanide kwakaita kuti kushandiswa kwecyanide kuderedzwa ne15% ukuwo kuchiramba kuchichengetedza mwero wepamusoro wekudzoserwa kwegoridhe. Izvi hazvina kungoderedza mari yekushandisa pakutenga cyanide chete asiwo zvakaderedza njodzi dzezvakatipoteredza dzine chekuita nekushandiswa uye kuraswa kwecyanide.

Zvinotarisirwa Kushandisa Hydrogen Peroxide

1. Kuisa pfungwa

Huwandu hwakakodzera hwehydrogen peroxide yekuwedzera kune cyanide leaching mhinduro inoenderana nezvinhu zvakasiyana, kusanganisira mhando yematombo, kuwanda kwecyanide yatove mumhinduro, uye kuvapo kwemamwe mamineral. Kazhinji, kuisa pakati pe0.1 - 1% (nehuwandu) kwakawanikwa kushanda zvakanaka mumamiriro mazhinji. Asi kana iyo yekumisikidza yakawandisa, inogona kukonzera pamusoro - oxidation yesimbi, kusanganisira goridhe. Uku kuwedzeredza-oxidation kunogona kugadzira makomisheni egoridhe asinganyanyike uye kuderedza huwandu hwegoridhe rinogona kudzoserwa.

2. pH Kudzora

Iyo pH nhanho yemhinduro yekuchenesa yakakosha kana uchishandisa hydrogen peroxide. Cyanide leaching inowanzoitika pane yakakwirira pH (yakakomberedza 9 - 12) kudzivirira kuumbwa kwechepfu yehydrogen cyanide gasi. Hydrogen peroxide inonyanya kugadzikana pane yakakwirira pH tsika. Nekudaro, kana iyo pH yakanyanya kukwirisa, inogona kuderedza kushanda kwehydrogen peroxide seanoxidizing agent. Saka, kungwarira kudzora pH kunodiwa kuti uve nechokwadi chekuti zvese cyanide nehydrogen peroxide zvinoshanda nemazvo muleaching system.

3. Kudzivirirwa

Hydrogen peroxide ioxidizing agent yakasimba uye inogona kuva nengozi kana ikasabatwa nemazvo. Inogona kutsamwisa ganda nemaziso, uye mumhando dzakadzika, inogona kunyange kuputika. Paunenge uchishandisa hydrogen peroxide mu cyanide leaching, matanho ekuchengetedza anofanirwa kuitwa. Izvi zvinosanganisira kushandisa midziyo yekuzvidzivirira, kuchengeta nekubata kemikari zvakanaka.

mhedziso

Hydrogen peroxide yakaratidza kugona kukuru semushonga wekuwedzera oxygen muSodium Cyanide leaching processes. Nekupa okisijeni yakawedzerwa, kukurumidzisa leaching speed, uye kuderedza kushandiswa kwecyanide, inogona kuwedzera kushanda zvakanaka uye hupfumi hwekubvisa simbi, kunyanya goridhe. Zvisinei, sechero nzira yemakemikari, kugadzirisa kwakakodzera uye kutevedzera zvakanyanya mitemo yekuchengetedza zvakakosha kuti ibudirire. Sezvo indasitiri yemigodhi ichiramba ichitsvaga nzira dzekubvisa dzinoshanda uye dzinogara kwenguva refu, kushandiswa kwehydrogen peroxide mu leaching yecyanide kunogona kutonyanya kukosha mune ramangwana.