Nzira uye Maitiro ekubvisa Cyanide paSulfide Mineral Surfaces

ziviso

Mukugadzirisa nekunyungudutsa maore esimbi asina ferrous sulfide, Cyanide inowanzoshandiswa kuwedzera mwero wekudzoreredza simbi. Zvisinei, cyanide inosara pamusoro pemaore esulfide haingokanganisi chete kuyerera kwemaitiro anotevera asiwo inokonzera matambudziko akakomba ezvakatipoteredza. Nokudaro, kugadzirwa kwenzira dzinoshanda uye dzisingakuvadzi nharaunda dzekubvisa cyanide pamusoro pemaore esulfide kune kukosha kukuru.

Ikozvino Mamiriro uye Njodzi dzeCyanide Residue pane Sulfide Mineral Surfaces

Mamiriro Ezvino

Muchinyakare flotation process ye sulfide ores, cyanide inoshandiswa zvakanyanya se inhibitor. Inogona kuvharidzira zvakasarudzwa mamwe maminerari asingadikanwi mune sulfide ores, nokudaro achiwana kupatsanurwa kwemaminerari anotangwa kubva kune gangue minerals. Asi mushure mekutenderera, yakawanda cyanide ichashambadza pamusoro pe sulfide ores. Zvinoenderana netsvakiridzo yakakodzera, mune mamwe maconcentrators, iyo cyanide yemukati iri pamusoro pe sulfide ore inodzika mushure mekutenderera inogona kunge yakakwira mazana emazana emamirigiramu pakirogiramu.

Njodzi

Kubva pamaonero etekinoroji, iyo cyanide yakasara ichakanganisa iyo inotevera smelting process. Semuenzaniso, panguva yekunyungudutswa kwemhangura sulfide ores, cyanide ichaita macomplexes nemhangura, kuderedza kunyunguduka kwemhangura uye kuwedzera kushandiswa kwesimba. Kubva pakuona kwezvakatipoteredza, cyanide chinhu chine muchetura zvakanyanya. Kana miswe yemvura yakasviba ine cyanide ikaiswa munzvimbo yechisikigo, inosvibisa miviri yemvura nevhu, kuisa mungozi zvipenyu zvemumvura nezvinomera zvakatenderedza, uye kunyange kutyisidzira hutano hwevanhu kuburikidza nechikafu cheni.

Nzira dzekubvisa Cyanide paSulfide Mineral Surfaces

Oxidation nzira

1.Chemical Oxidation Method

• Musimboti: Shandisa ma oxidants akasimba kuti uoxidize cyanide kuita zvinhu zvisina chepfu kana kuti zvisina chepfu. Ma oxidants akajairika anosanganisira hydrogen peroxide (H2O2), sodium hypochlorite (NaClO), nezvimwewo. Tichitora hydrogen peroxide semuenzaniso, reaction equation yayo ndeiyi: (2CN+5H2O2 = 2HCO3 + N2↑+4H2O).

• Maitiro Ekushanda : Kutanga, isa sulfide ore pulp ine cyanide mutangi re reaction uye gadzirisa pH value ye pulp kusvika padanho rakakodzera (kazhinji, kuti hydrogen peroxide oxidation ioxidation, pH value iri pakati pe9 - 11). Wobva wawedzera zvishoma nezvishoma hydrogen peroxide solution uchikurunga kuti oxidant ibatane zvizere uye iite reaction ne pulp. Nguva ye reaction inowanzova kubva paawa imwe kusvika nhatu, uye nguva chaiyo inoenderana nehuwandu hwecyanide mu pulp uye hunhu hweore.

• Zvakanakira : Kumhanya kwekuita kwechinhu ichi kunokurumidza, uye simba rekubvisa cyanide rakanaka, izvo zvinogona kuderedza huwandu hwecyanide kusvika padanho rakaderera.

• Zvakashata : Ma oxides akadai se hydrogen peroxide anodhura zvakanyanya, uye ma oxidants akawandisa anogona kukanganisa maitiro ekuvandudza kana kunyungudutsa.

Adsorption nzira

1.Activated Carbon Adsorption Method

• Musimboti : Kabhoni Inoshanda ine nzvimbo yakakura uye maburi akapfuma, ayo anogona kunyudza cyanide pamusoro payo kuburikidza nekunyudzwa kwemuviri uye kwemakemikari.

• Maitiro Ekushanda : Wedzera Activated Carbon mu sulfide ore pulp ine cyanide wobva wakurunga zvakanaka kuti activated carbon ibatane zvizere necyanide iri mu pulp. Nguva yekunyungudutsa inowanzova maminetsi makumi matatu kusvika maawa maviri. Mushure mekunyungudutsa, paradzanisa activated carbon kubva mu pulp nekusefa kana neimwe nzira.

• Zvakanakira : Kushanda kwacho kuri nyore, uye kune simba rakanaka rekunyungudutsa cyanide ine huwandu hwakaderera. Kabhoni inoshandiswa inogona kugadzirwazve uye kushandiswazve.

• Zvakashata : Kune cyanide yakawanda, kugona kwayo kunyungudutsa mvura kwakaderera, uye kusabatwa zvakanaka kwekabhoni yakanyungudutswa kunokonzera kusvibiswa kwemuviri.

2.Ion - Exchange Resin Adsorption Method

• Musimboti : MaIon - maresin ekutsinhana ane mapoka anoshanda anogona kuchinjana nemaion ari mucyanide, nokudaro achikweva cyanide paresin.

• Maitiro Ekushanda : Isa ion - chinjana resin muchikamu chekutsinhana uye ita kuti sulfide ore pulp ine cyanide ipfuure nepakati pechikamu chekutsinhana. Dzora mwero wekuyerera kwe pulp kuti uve nechokwadi chekuti cyanide inotsinhana zvizere neresin. Kana resin yazara nekunyungudika, shandisa eleent chaiyo kuti ubvise uye ugadzire resin patsva.

• Zvakanakira : Ine cyanide inogona kunyungudutsa zvakanyanya uye inogona kushanda nguva dzose.

• Zvakashata : Mutengo we resin wakakwira, maitiro ekubuda kwemvura akaomarara, uye marara emvura ane cyanide anogona kugadzirwa.

Dzimwe Nzira

1.Acid - Base Neutralization Method

• Musimboti : Mune mamwe mamiriro ezvinhu, cyanide inozosangana nehydrolysis reactions munzvimbo dzine acidic kana alkaline kuti igadzire zvinhu zvisina chepfu kana zvisina chepfu. Semuenzaniso, mumamiriro ane acidic, cyanide ichaita nema hydrogen ions kuti igadzire hydrocyanic acid (HCN), iyo inogona kubviswa ne volatilization; mumamiriro e alkaline, cyanide inochinja kuita cyanate nezvimwe zvinhu.

• Maitiro Ekushanda : Kana acidic hydrolysis ikashandiswa, wedzera zvishoma nezvishoma acidic solutions dzakadai se dilute sulfuric acid kune sulfide ore pulp ine cyanide, gadzirisa pH value kusvika 2 - 4. wobva wafema kuti hydrocyanic acid inogadzirwa iparare. Kana alkaline hydrolysis ikashandiswa, wedzera alkaline substances dzakadai sesodium hydroxide, gadzirisa pH value kusvika 10 - 12. woita reactive kwenguva yakati (kazhinji maawa 2 - 4).

• Zvakanakira : Mutengo wacho wakaderera, uye mashandiro acho ari nyore.

• Zvakashata : Hydrocyanic acid inogadzirwa panguva yekubvisa acidic hydrolysis ine chepfu yakawanda uye inoda matanho ekudzivirira akasimba; alkaline hydrolysis reaction speed inononoka, uye panogona kunge paine cyanide residue shoma mushure mekurapwa.

Process Flow Dhizaini yekubvisa Cyanide paSulfide Mineral Surfaces

Pretreatment Stage

1. Kugadziriswa kwePulp : Gadzirisa huwandu hwepulp yesulfide ore mushure mekudonha. Kazhinji, huwandu hwepulp hunodzorwa pakati pe20% - 40% yekurapwa kunotevera. Panguva imwe chete, tarisa huwandu hwecyanide yekutanga mupulp kuti upe hwaro hwekuona mafambiro anotevera.

2. Kubviswa Kwetsvina : Bvisa tsvina yakakura nezvimwe zvinhu zvakaoma zvakasungirirwa mu pulp nekusefa, kudiridza, nezvimwewo, kudzivirira kuti zvisakanganisa maitiro ekurapa anotevera.

Removal Stage

1. Sarudzo Yenzira : Sarudza nzira yakakodzera yekubvisa zvichienderana nezvinhu zvakaita sehuwandu hwecyanide mu pulp, hunhu hwematombo, mutengo wekurapa, uye zvinodiwa zvekuchengetedza nharaunda. Semuenzaniso, kune cyanide ine huwandu hwakawanda uye zviitiko apo mutengo hausi wenyaya, nzira yemakemikari yeOxidation inogona kupihwa pekutanga; kune cyanide ine huwandu hushoma uye zviitiko zvinozivikanwa nenharaunda, nzira ye oxidation ye biological kana nzira ye adsorption inogona kunge yakakodzera.

2. Kudzora Maitiro Ekuita : Kutora hydrogen peroxide oxidation nenzira yeChemical oxidation semuenzaniso, nyatso dzora huwandu hwehydrogen peroxide inowedzerwa (inowanzo verengerwa zvichienderana nehuwandu hwecyanide uye reaction equation), tembiricha ye reaction (kazhinji 20 - 30℃), pH value (9 - 11), uye kumhanya kwekumutsa (100 - 300 revolutions paminiti) uye zvimwe zviyero kuti uve nechokwadi chekuti reaction inoshanda.

Post - kurapwa Danho

1. Kupatsanurwa Kwemvura Yakaoma : Kuparadzanisa pulp mushure mekubvisa cyanide nekusefa, kupinza mvura, nezvimwewo kuti uwane sulfide ore concentrates yakachena uye mvura yakasviba ine cyanide shoma.

2. Kurapa Mvura Yakasviba : Wedzera kuchenesa mvura yakasviba yakaparadzaniswa kuti ienderane nezvinodiwa nenyika. Nzira dzechipiri dzekubvisa cyanide mumvura yakasviba, kuinyudza, nedzimwe nzira dzinogona kushandiswa kubvisa cyanide mumvura yakasviba kuti ive nechokwadi chekuti yakasununguka kuiburitsa.

mhedziso

Kune nzira dzakasiyana dzekubvisa cyanide pamusoro pe sulfide ores, uye imwe neimwe nzira ine zvayakanakira nezvayakaipira. Mumashandisirwo anoshanda, zvinodikanwa kunyatso tarisa zvinhu senge ore zvivakwa, cyanide concentration, mutengo wekurapa, uye kuchengetedzwa kwezvakatipoteredza zvinodiwa kuti usarudze nzira dzakakodzera uye mafambiro anoyerera. Nekuwedzera kuomesera kwekuchengetedza kwezvakatipoteredza zvinodiwa uye kuenderera mberi kwehunyanzvi tekinoroji, kuvandudzwa kwehunyanzvi, hushamwari hwezvakatipoteredza, uye husingadhuri matekinoroji ekubvisa cyanide pamusoro pe sulfide ores ichave yakakosha nzira yekutsvagisa mune ramangwana. Kuburikidza nekuenderera mberi kwekuita optimization, inotarisirwa kuwana zero - kuburitswa kwecyanide mukubatsira uye kunyungudutsa maitiro e sulfide ores uye kukurudzira kusimudzira kwakasimba kweiyo isiri-ferrous metal indasitiri.