Cyanidation Leaching Techniques yeHigh-Sulfur uye High-Arsenic Gold Ores

Kurapa kwepamusoro-sarufa uye yakakwirira-arsenic yegoridhe ores yakagara iri nyaya yakaoma mumunda wekugadzirisa mineral. Nekuda kwekuumbwa kwavo kwemaminerari kwakaomarara uye kukwira kwetsvina, nzira dzechinyakare dzecyanidation dzinowanzo kunetseka kuburitsa goridhe nesirivheri. Ichi chinyorwa chinopa sumo yakadzama kune akati wandei nzira dzekudzidzira dzakakodzera kune yakakwira-sarufa uye yakakwirira-arsenic goridhe ores, nechinangwa chekubatsira varapi vemigodhi kuti vanzwisise zvirinani nekushandisa matekinoroji aya.

Hunhu hweHigh-Sulfur uye High-Arsenic Gold Ores

Yakakwirira-sarufa uye yakakwira-arsenic goridhe ores kazhinji ine yakawanda sulfides uye arsenides. Kusachena uku hakungokanganisa kushanda kwegoridhe nesirivheri chete asiwo kunokonzeresa kutyisidzira nharaunda. Naizvozvo, kana uchibata neakadaro ores, yakakosha nzira inoyerera inodiwa kuvandudza mwero wekudzoreredza wegoridhe nesirivheri uye kuderedza kukanganiswa kwezvakatipoteredza.

Oxidative Roasting Method

Iyo oxidative yekugocha nzira inowanzoshandiswa pakurapa yakakwirira-sarufa uye yakakwirira-arsenic goridhe ores. Iyi nzira inookisisa sarufa nearsenic muore kuita gasi kana kuti solid oxides kuburikidza nekugocha kwepamusoro-tembiricha, zvichibva zvabvisa tsvina. Mushure mekugocha, chimiro che ore chinova chakasununguka, izvo zvinonyanya kubatsira pakudonha kwegoridhe nesirivha.

Matanho chaiwo eiyo oxidative yekugocha nzira ndeaya anotevera:

1. Kupisa kwepamusoro-kupisa kunoitwa pane yakakwirira-sarufa uye yakakwirira-arsenic goridhe concentrate inowanikwa nekuyangarara kubvisa sulfur uye arsenic.

2. Ore yakagochwa inogezwa ne-high-acid pretreatment kunyungudutsa tsvina zhinji.

3. Matombo akagezwa anobva abviswa tsvina, uko goridhe nesirivha zvinonyungudutswa necyanide zvopinda mumushonga.

Thiourea Leaching Method

Iyo thiourea leaching nzira ichiri kubuda yakaderera-chepfu yekubvisa goridhe, kunyanya yakakodzera kurapa ores yegoridhe ine yakakwira arsenic uye sarufa zvemukati. Thiourea mune acidic mhinduro inogona kunyungudutsa goridhe nesirivheri nekukurumidza, ine yakaderera muchetura, uye iri nyore kuita patsva. Kana ichienzaniswa neyechinyakare cyanidation nzira, iyo thiourea nzira hainyanyi kutarisisa kune zvicherwa zvikamu zvakaita se antimony, arsenic, mhangura, uye sarufa. Nokudaro, ine zvikomborero zvakajeka pakurapa yakakwirira-sarufa uye yakakwirira-arsenic goridhe ores.

Matanho chaiwo eiyo thiourea leaching nzira ndeaya anotevera:

1. Gold-bearing sulfide concentrate inowanikwa kuburikidza neflotation.

2. Iyo flotation concentrate inonyudzwa nethiourea mhinduro kudzosa goridhe nesirivha.

3. Ndarama nesirivha zviri mumushonga wekuburitsa mvura zvinonyungudutswa nemaion exchange resins kana activated Carbon uye zvinozorapwa zvinotevera.

Heap Leaching Method

Nzira yekubvisa tsvina kubva muHeap inzira yekubvisa tsvina kubva muHeap ine mari shoma yekugadzira uye iri nyore kushandisa, yakakodzera kurapa matombo egoridhe ane sarufa yakawanda uye ane arsenic yakawanda. Nzira iyi inosanganisira kuisa matombo panzvimbo yakagadzirirwa kare uye kuapfapfaidza kana kuapwanya ne cyanide leaching solution, zvichiita kuti mushonga upinde mumatombo uye ugadzire mhedzisiro yekubuda.

Matanho chaiwo eiyo mirwi leaching nzira ndeaya anotevera:

1. Iyo ore inopwanyiwa kune imwe particle size uye yobva yaunganidzwa panzvimbo.

2. Ore yacho inopfapfaidzwa kana kunyungudutswa nemushonga wecyanide leaching, uye mushonga wacho unobvongodza nepakati pesimbi kuti uburitse.

3. Mushonga wekubuda kwemvura unounganidzwa, uye goridhe nesirivha zvinotorwa kuburikidza nema ion exchange resins, Activated Carbon adsorption, kana kutsiva zinc.

Yakamutswa Leaching Method

Iyo yakasimudzwa leaching nzira inzira inoshanda yeleaching yakakodzera kurapa yakanaka-grained oxidized ores kana sulfide ore calcines. Iyi nzira inoshandisa yakanyungudika yesulfuric acid mhinduro kunyudza simbi mutangi rinorasa rine mudziyo unonyandura. Nekuda kwekukandira kwakaringana, iyo yekumhanyisa yekumhanyisa inokurumidza, uye chiyero cheleaching chakakwira.

Matanho chaiwo eiyo yakamutswa leaching nzira ndeaya anotevera:

1. Iyo ore inopwanyiwa kuita zvidimbu zvidimbu (-75um accounting ye90%) uye yobva yawedzerwa kune leaching tank.

2. Stirred leaching inoitwa neine concentrated sulfuric acid solution. Iyo yemhangura yemhangura mune yeleaching mhinduro yakakwira uye inogona kushandiswa zvakananga kumhangura electrowinning.

3. Iyo leaching solution inorapwa inotevera kudzorera goridhe nesirivha.

mhedziso

Kurapa kwepamusoro-sarufa uye yakakwira-arsenic goridhe ores inoda kutorwa kweyakakosha nzira inoyerera kuvandudza mwero wekudzoreredza wegoridhe nesirivheri uye kuderedza kukanganisa kwezvakatipoteredza. Iyo oxidative yekugocha nzira, thiourea leaching nzira, murwi leaching nzira, uye yakasimudzwa leaching nzira dzese inzira dzinoshanda dzekurapa.