Sodium cyanide Leaching of Gold from Low - Giredhi Goridhe - Bearing Tailings

Mumunda wekucherwa kwegoridhe nekuchera, kudzoreredza zvakanaka kwegoridhe kubva kune yakaderera-giredhi ores uye tailings yave iri kuwedzera kukosha yekutsvagisa musoro. Sezvo madhipoziti egoridhe akakwira zvishoma nezvishoma, kushandiswa kwezvinhu zvakaderera-giredhi kwakwezva kutarisisa kwakawanda. Ichi chinyorwa chinotarisa pane Cyanide Leaching process yegoridhe kubva yakaderera-giredhi goridhe - ine miswe, nechinangwa chekupa ruzivo rwakakosha munzvimbo iyi.

1. ziviso

Yakaderera - giredhi goridhe - inotakura miswe, inova yakasara mushure mekutanga kugadziriswa kwegoridhe ores, ichine imwe chiyero chegoridhe. Nekuda kwekuoma kwavo kuumbwa kwemamineralogical uye kuderera kwegoridhe mamakisi, kutorwa kwegoridhe kubva kune aya miswe kunonetsa. Nekudaro, nekuenderera mberi kwekuvandudza tekinoroji yekubvisa, zvinokwanisika kudzoreredza goridhe kubva kwavari. Cyanide leaching yagara iri nzira inoshandiswa zvakanyanya muindasitiri yemigodhi yegoridhe nekuda kwekuita kwayo kwakanyanya uye kusarudza mukubvisa goridhe.

2. Kuedza Nzira

2.1 Muenzaniso Kugadzirira

Misara yemugodhi yegoridhe yakashandiswa muchiyedzo ichi yakatanga kuiswa pasi pekuita granulation. Granulation inhanho yakakosha yekutangira sezvo ichikwanisa kuvandudza kusangana pakati pemasara zvidimbu uye leaching agent, nekudaro ichiwedzera kushanda kweLeaching. Mushure me granulation, matailings aive akagadzirira kunotevera Cyanide leaching muedzo.

2.2 Kurapwa

Masara emugodhi wegoridhe akaiswa mushonga wealkaline kwemaawa masere. Danho rekutanga rekugadzirisa iri rakakosha nekuti rinogona kubatsira kuputsa mamwe mamineral ari mumisungo, zvichiita kuti goridhe riwanike cyanide leaching agent. Iyo zvakare inogadzirisa iyo pH nharaunda yemaswe, iyo inobatsira kune inotevera cyanide leaching reaction.

2.3 Cyanide Leaching

Cyanide leaching yakaitwa uchishandisa Sodium cyanide semumiririri weLeaching. Huwandu hwe Sodium Cyanide yakashandiswa yaive 1 kg/t. Iyo leaching nguva yakaiswa pamaawa makumi maviri nemana, uye panguva yekugadzira leaching, iyo pH yemhinduro yakachengetedzwa mukati meiyo 24 - 10.0. Iyo yakakodzera pH kukosha inofanirwa kuve nechokwadi kugadzikana kweiyo cyanide ion uye kushanda kweiyo leaching reaction.

3. Experimental Results

Migumisiro yekuedza yakaratidza kuti pasi pemamiriro ezvinhu ataurwa pamusoro apa, chiyero chegoridhe chekutengesa chinogona kusvika kudarika 60%. Izvi zvinoratidza kuti maitiro akasanganiswa e alkaline pretreatment uye cyanide leaching inoshanda pakubvisa goridhe kubva mune iyi chaiyo migodhi yegoridhe. Iyo 8-awa alkaline pretreatment, 1 kg/t ye sodium cyanide dosi, 24 - awa leaching time, uye pH renji ye10.0 - 12.0 yakapa yakagadziridzwa seti yemaparamita eiyi leaching process.

4. Kukosha uye Ramangwana Outlook

Kushandiswa kwakabudirira kweiyi cyanide leaching nzira yepasi-giredhi goridhe - inobereka tailings ine zvakakosha. Chekutanga, inopa nzira inoshanda yekudzoreredza goridhe kubva kumaswe, kuderedza tsvina uye kuwedzera zviwanikwa zvekushandisa. Chechipiri, inogona kuunza pundutso mune zveupfumi kumakambani emigodhi nekutora goridhe rakakosha kubva kumasara akanga araswa kare.

Mune ramangwana, kumwe kutsvagisa kunogona kuitwa kuti maitiro aya akwanise. Semuyenzaniso, kuongorora mhando dzakasiyana dzepretreatments kuvandudza mwero wekusunungurwa kwegoridhe, kana kudzidza mashandisirwo emamwe maajenti ekuregedza kuderedza kukanganiswa kwezvakatipoteredza kwecyanide. Pamusoro pezvo, mashandisirwo eiyi tekinoroji kumhando dzakasiyana dzeyepasi - giredhi goridhe - inobereka tailings inoda kuongororwa kuti ione hukuru hwayo.

Mukupedzisa, cyanide leaching process yakadzidzwa pano inopa mhinduro inovimbisa yekutorwa kwegoridhe kubva yakaderera - giredhi goridhe - ine tailings, uye kuenderera mberi nekutsvagisa nekuvandudza munzvimbo ino kuchabatsira mukusimudzira kwakasimba kweindasitiri yemigodhi yegoridhe.