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

Mundima yekuchera nekuchera goridhe, kudzoreredzwa kwegoridhe kubva mumatombo egoridhe emhando yepamusoro kwave nyaya inokosha mukutsvaga. Sezvo goridhe remhando yepamusoro richiderera zvishoma nezvishoma, kushandiswa kwezviwanikwa zvemhando yepamusoro kwave kukwezva kutariswa kwakawanda. Chinyorwa chino chinotarisa pakuita kwekubvisa goridhe kubva mumatombo egoridhe emhando yepamusoro, nechinangwa chekupa ruzivo rwakakosha munharaunda 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

Matsvina emugodhi wegoridhe akashandiswa mukuyedza uku akatanga aiswa mu granulation process. Kuisa granulation idanho rakakosha rekugadzirisa ganda nekuti rinogona kuvandudza kubatana pakati pematsvina emugodhi nemushonga wekuburitsa tsvina, nokudaro zvichiwedzera kushanda zvakanaka kwekubvisa tsvina. Mushure mekuisa granulation, masero acho akanga agadzirira bvunzo yekuburitsa tsvina yeCyanide inotevera.

2.2 Kurapwa

Matope emugodhi wegoridhe akaiswa mushonga wealkaline kwemaawa masere. Danho iri rekugadzirisa rakakosha nekuti rinogona kubatsira kupwanya mamwe mamineral ari mumatope, zvichiita kuti goridhe rive nyore kubatwa ne cyanide leaching agent. Rinogadzirisawo pH nharaunda yematope, izvo zvinobatsira pakuita kwe cyanide leaching reaction inotevera.

2.3 Cyanide Leaching

Kubvisa Cyanide kwakaitwa uchishandisa Sodium cyanide senzira yekuburitsa. Huwandu hweSodium Cyanide hwakashandiswa hwaive 1 kg/t. Nguva yekuburitsa yakaiswa pamaawa makumi maviri nemana, uye panguva yekuburitsa, pH yemushonga yakaramba iri pakati pe10.0 - 12.0. pH yakakodzera inodiwa kuti ive nechokwadi chekuti cyanide ion yakagadzikana uye kuti reaction yekuburitsa inobudirira.

3. Experimental Results

Zvakabuda muongororo zvakaratidza kuti pasi pemamiriro ezvinhu ataurwa pamusoro apa, mwero wekubviswa kwegoridhe unogona kusvika pamusoro pe60%. Izvi zvinoratidza kuti maitiro akabatanidzwa ekugadzirisa alkaline nekubvisa cyanide anoshanda pakubvisa goridhe kubva mumigodhi iyi yegoridhe. Kubviswa kwealkaline kwemaawa masere, 1 kg/t ye sodium cyanide dosage, 24- awa leaching time, uye pH range ye10.0 - 12.0 zvakapa seti yematanho akagadziridzwa ekugadzirisa uku kubviswa kwegoridhe.

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.