Iko Kubata Kwepamusoro-Kupisa Leaching paSodium Cyanide Kushandiswa

ziviso

Mukuita kweGoridhe , Sodium Cyanide inoshandiswa zvakanyanya senzira yekuburitsa goridhe nekuda kwekugona kwayo kugadzira goridhe rakagadzikana. Zvisinei, kushandiswa kwesodium cyanide chinhu chakakosha chinokanganisa hupfumi uye kukanganisa kwemabasa ekuchera goridhe munzvimbo. Kuburitsa goridhe mukupisa kwakanyanya ndeimwe yenzira dzinoshandiswa kuwedzera kushanda zvakanaka kwegoridhe kubva mumatombo. Chinyorwa chino chinotarisa kukanganiswa kwekubvisa goridhe mukupisa kwakanyanya pakushandiswa kweSodium cyanide.

Basa reSodium Cyanide muGoridhe Leaching

Sodium cyanide inosangana negoridhe kana paine okisijeni kuti igadzire makemikari anonyunguduka anobvumira goridhe kubviswa muore. Kuverengerwa kwemagetsi kunoratidza kuti, maererano nedzidziso, 0.92 gramu yesodium cyanide inodiwa kuti inyungudise 1 gramu yegoridhe. Zvisinei, mukugadzirwa chaiko kwemaindasitiri, kushandiswa kwesodium cyanide kwakakwira zvikuru kupfuura kukosha uku kwedzidziso, kazhinji ka50 - 100. Musiyano uyu wakakosha unokonzerwa nezvinhu zvakasiyana-siyana zviripo mumigodhi chaiyo, zvakaita sekuita nezvimwe zvicherwa muore uye maitiro emakemikari anoitika panguva yekushanda kwekubvisa.

High - Temperature Leaching Process

High -tembiricha leaching inoitwa patembiricha dzakakwirira, kazhinji pamusoro peyakajairika ambient tembiricha. Chinangwa chikuru ndechekuwedzera basa reion mune ore - leaching solution system. Nekuita izvi, inomhanyisa kuita pakati peiyo leaching agent, sodium cyanide, uye goridhe mukati meore. Semuyenzaniso, kana iri imwe goridhe refractory ores, yakakwirira-tembiricha leaching inogona kupaza yakaoma zvicherwa zvimiro zvakaputira goridhe, zvichiita kuti goridhe riwanikwe nyore kune cyanide ions kuti ibvise.

Mhedzisiro yePamusoro - Tembiricha Leaching paSodium Cyanide Kushandiswa

1. Kuwedzera muRection Rate

Pakupisa kwepamusoro, iyo kinetic simba reanoita mamorekuru anowedzera. Izvi zvinokonzeresa kudhumhana kwakawanda uye kwakasimba pakati pe sodium cyanide mamorekuru, mamorekuru eokisijeni, uye zvimedu zvegoridhe mu ore. Nekuda kweizvozvo, mwero wekunyungudika kwegoridhe musodium cyanide mhinduro inomhanyisa. Kana chiyero chekuita chichikurumidza, goridhe rakawanda rinogona kunyungudutswa panguva yeyuniti. Kana chinangwa chiri chekuburitsa huwandu hwakati hwegoridhe, yakakwirira-tembiricha leaching ingada ipfupi leaching nguva. Mune dzidziso, izvi zvinogona kuderedza kudyiwa kwesodium cyanide sezvo nzira yekumhanyisa inopera nekukurumidza, ichideredza nguva iyo sodium cyanide inoratidzwa kune izvo zvinokonzeresa kudyiwa kwayo.

2. Cyanide Hydrolysis

Cyanide inopinda kemikari inonzi hydrolysis mumhinduro, uye kukura kweiyi hydrolysis kunokonzerwa nekushisa. Sezvo tembiricha inokwira, iyo hydrolysis ye cyanide inova yakanyanya kujeka. Pa100 ° C, hafu ye cyanide ions inorasika, uye pa130 ° C, 85% yavo yakarasika. Iyi hydrolysis inogadzira hydrocyanic acid, iyo isingangotungamira mukurasikirwa nesodium cyanide asi zvakare inoisa njodzi yakakomba yezvakatipoteredza nekuchengetedza nekuti hydrocyanic acid igasi rine muchetura. Mupamusoro-tembiricha leaching, kana tembiricha isina kudzorwa zvakanaka, iyo yakawedzera hydrolysis ye sodium cyanide inogona kuwedzera zvakanyanya kushandiswa kwayo.

3. Kuita neAssociated Minerals

Ore zhinji dzegoridhe dzine mamwe mamineral, akadai sepyrite, pyrrhotite, uye copper sulfide. Aya maminerari anobatanidzwa anogona kuita ne sodium cyanide. Pakupisa kwepamusoro, maitiro ekuita pakati peaya asina goridhe-akatakura zvicherwa uye sodium cyanide anogona kuwedzera. Izvi zvinoreva kuti yakawanda sodium cyanide ichashandiswa kumusoro mukusangana nemaminerari aya, ichisiya shoma inowanikwa yekuita negoridhe. Pamusoro pezvo, kumwe kwekuita uku kunogona kuburitsa ne-zvigadzirwa zvinogona kuenderera mberi nekukanganisa maitiro egoridhe. Semuenzaniso, sarufa - ine makomisheni akaumbwa anogona kufukidza pamusoro pezvikamu zvegoridhe, kudzivirira maion ecyanide kubva pakusvika uye kuita negoridhe.

4. Solubility yeOxygen

Oxygen chinhu chakakosha mugoridhe - cyanide leaching reaction sezvo ichiita seoxidant. Zvisinei, kunyungudika kweokisijeni mumvura kunodzikira sezvo tembiricha inowedzera. Pa100 ° C, hapana oxygen yakanyungudika mumvura. Mupamusoro-tembiricha leaching, kana tembiricha yasvika painofashaira mvura, kushaikwa kweokisijeni yakakwana yakanyungudika kunogona kudzikamisa oxidation yegoridhe. Kugadzirisa iyo yakaderedzwa kunyungudika kweokisijeni, mamwe matanho akaita sekuwedzera mweya weokisijeni chikamu kana kushandisa mamwe maoxidants angave akadikanwa. Asi kana iyo oxygen inopa ikaramba isina kukwana, iyo goridhe leaching reaction inodzika, uye yakawanda sodium cyanide inogona kupedzwa mukuyedza kufambisa mhinduro kumberi.

Case Studies

Mune imwe goridhe, nzira yechinyakare yekubvisa cyanide mukamuri netembiricha yaidya 2.5 kg ye sodium cyanide patani yesimbi. Pakatangwa nzira yekubvisa chanide mutembiricha yakakwira, pakutanga, nekuda kwekukurumidza kwekubvisa chanide mugodhi, nguva yekubvisa chanide yakaderedzwa kubva pamaawa makumi mana nemasere kusvika kumaawa makumi maviri nemana. Zvisinei, nekuda kwekudzora tembiricha zvisina kunaka, tembiricha yekubvisa chanide yakasvika 80 °C, hydrolysis ye sodium cyanide yakawedzera zvakanyanya. Nekuda kweizvozvo, kushandiswa kwe sodium cyanide kwakawedzera kusvika pa 3.0 kg patani yesimbi. Mushure mekugadzirisa nzira yekubvisa chanide mutembiricha yakakwira, kusanganisira kudzora tembiricha pa60 °C nekuwedzera zvinodzivisa hydrolysis ye cyanide, Sodium Cyanide Consumption yakaderedzwa kusvika pa 2.0 kg patani yesimbi uku ichiri kuchengetedza mwero wepamusoro wekubvisa chanide mugodhi.

mhedziso

Yakakwira - tembiricha leaching ine mhedzisiro yakaoma pakushandiswa kwesodium cyanide mune yekubvisa goridhe maitiro. Kune rimwe divi, inogona kumhanyisa iyo goridhe - leaching reaction, inogona kudzikisa sodium cyanide kushandiswa kana maitiro acho akanyatsogadziriswa. Kune rimwe divi, tembiricha yakakwira inogona kukonzera yakawedzera cyanide hydrolysis, zvakanyanya kuita nemaminerari anosanganisirwa, uye kuderedzwa kweokisijeni solubility, izvo zvese zvinogona kutungamirira kune yakakwira sodium cyanide kushandiswa. Naizvozvo, kana uchiisa yakakwira-tembiricha leaching, zvakakosha kukwirisa maitiro ma paramita, senge chaiwo tembiricha yekudzora, yakakodzera okisijeni, uye kushandiswa kwezvinowedzerwa kuvharidzira cyanide hydrolysis uye zvisingadiwe maitiro ane mamineral akabatana. Iyi nzira inogona kubatsira kuenzanisa pakati pekuvandudza goridhe leaching kunyatsoshanda uye kuderedza sodium cyanide kushandiswa, kuwedzera hupfumi uye kwezvakatipoteredza kuita kwegoridhe migodhi.