Njira Zisanu Zothandizira Kupititsa patsogolo Kutulutsa Kwagolide

Mulu leaching uli ndi njira ziwiri: cyanide kuchotsa ndi kuchira kwa golide kuchokera ku njira ya golide yoyembekezera. Ubwino wa cyanide leaching imakhudza mwachindunji kupambana kwa milu ya leaching. Zotsatirazi zikuwonetsa mbali zisanu za momwe mungalimbikitsire kutulutsa golide pochotsa milu.

1. Kugwiritsa Ntchito Granulation Technology

Panthawi yothira miyala ya golide, miyala yokhala ndi dongo lambiri kapena zinthu zowoneka bwino sizoyenera kuti zidulidwe molunjika ndipo zimafunikira kusamalidwa kwa granulation kuti mulu wa miyalayo ukhale wabwino. Kukonzekera kwa granulation kumatha kukulitsa kuchuluka kwa golide ndipo, nthawi zambiri, kumakulitsa kwambiri kuchuluka kwa golide. Kutengera ndi momwe zinthu ziliri, miyalayi imatha kukhala ndi granulated, kapena kungopangidwa bwino - kung'ambika kapena pang'ono kumatha kuchitika.

Mwachitsanzo, mu 1991. mgodi wa golide ku Xinjiang, China, anachita chachikulu - sikelo (24.000 matani) granulation mulu leaching kwa nthawi yoyamba. Nthawi ya leaching idafupikitsidwa ndi masiku 35 poyerekeza ndi leaching mwachindunji, ndipo kuchuluka kwa leaching kudakwera kuchokera 49.69% mpaka 81.5%.

2. Kupititsa patsogolo Kukwanira kwa Mulu wa Ore ndi Kuthetsa

Kuwotchera ndi gawo lofunikira kwambiri pakupanga milu yagolide. Mulu wonse wa zitsulo uyenera kukhala ndi mwayi wodutsa mofananamo kuti zisapitirire kapena kutsekeka kwanuko. Chifukwa chake, tikulimbikitsidwa kugwiritsa ntchito zida zomangira zopangira milu yatsopano ya arc ndikutengera njira ya "segmented stacking, cross - spraying, and multi - stage counter - current leaching". Kenako, lowetsani mpweya mu mulu wa ore ndi kuyala mapaipi osonkhanitsira madzi kuti muwongolere mpweya wa mulu wa ore ndi mphamvu ya leaching.

Nthawi zambiri, zida zomwe zimathandizira kuti mpweya ulowemo zimayenera kuyikidwa panthawi yowunjika kuti mpweya uzitha kutulutsa komanso kuchuluka kwa muluwo.

Mwachitsanzo, mulu wa leaching, nkhuni nkhanu, nsungwi machubu, etc. Pambuyo potulutsa madzi kwa nthawi yayitali, zinthu zokwiriridwazi zimakokedwa kuti zitheke kutulutsa golide. Kapena, mulu wa milu ikatuluka kwa nthawi, kuphulika kotayirira komweko kumachitika m'madzi - madera owunjika, omwe amathanso kumasula mulu wazitsulo ndikuwongolera kuloleza.

Zotsatira za kafukufuku wa Hazen Research Institute ku United States zikusonyeza kuti kuchulukitsidwa kwa okosijeni mu mulu wa ore sikungafupikitse kuzungulira kwa leaching ndi pafupifupi gawo limodzi mwa magawo atatu komanso kumawonjezera kuchuluka kwa golide.

3. Kusunga Kutentha koyenera kwa Leaching

Njira ya cyanidation ili ndi zofunika kwambiri pakutentha. Chifukwa chake, m'malo ozizira, cholepheretsa chachikulu pakuwukitsa leaching ndi kutentha kwa leaching. Pamene kutentha kwa leaching kutsika kuposa 10 ° C, kusungunuka kwa golide kumatsika kwambiri. Kuti mudutse kutentha ndi kukulitsa nyengo yokhetsa mulu, yankho liyenera kutenthedwa lisanadonthe ndikutumizidwa ku mulu wa miyala.

Migodi ina ku Canada imagwiritsa ntchito kutentha kotayidwa kutenthetsa yankho, motero amakulitsa nthawi yogwirira ntchito mulu. Mgodi wa Golide wa Richmond Hill ku South Dakota, USA, umagwiritsa ntchito ulimi wothirira ndi kutentha - zida zoyamwitsa pa mulu wa mulu kuti zitheke kupanga mosalekeza nthawi yonse yachisanu.

4. Kugwiritsa Ntchito Kuthirira kwa Drip

Kuthirira kothirira ndi kuthirira kudontha ndi njira ziwiri zogawa zamadzimadzi mu mulu wa leaching, zonse zomwe zimatha kutulutsa mphamvu yogawa yamadzimadzi.

Komabe, kuchuluka kwa zosungunulira za leaching mu njira yopopera sikophweka kuwongolera, kuchuluka kwa leaching sikuli kophweka, ndipo nthawi yomweyo, cyanide yaying'ono - yokhala ndi madontho amadzi opopera mumlengalenga ndizosavuta kufalitsa ndikuipitsa chilengedwe. Kuti muchepetse kugwiritsa ntchito mphamvu ndikuwonjezera kuchuluka kwa leaching, njira yothirira madzi amatha kutsatiridwa.

Ubwino wa Drip Irrigation

• Kuthirira kothirira kumatha kukulitsa zomwe zili mumlengalenga mu yankho, ndiye kuti, zomwe zili ndi okosijeni zomwe zimakhudzidwa ndi mankhwala zimawonjezeka, potero zimakulitsa ntchito ya mpweya wa golide.

• Kuthirira kothirira kumatha kuwongolera bwino ndende ya cyanide yankho ndikuchepetsa kutayika kwa Sodium cyanide mlengalenga.

• Kudontha mthirira ndikosavuta kuwonjezera zida zowongolera kutentha kuti mukwaniritse cholinga chowonjezera kutentha kwa mulu wa leaching chemical reaction.

• Dothi lothirira limakhala ndi makina apamwamba kwambiri, kupanga bwino kwambiri, komanso ndalama zotsika mtengo.

5. Kugwiritsa Ntchito Zosefera Zothandizira

Monga chowonjezera, chithandizo cha leaching chimawonjezeredwa ku cyanide - leached zamkati. Kumbali imodzi, imatha kukulitsa kulumikizana pakati pa cyanide ndi golidi; Kumbali inayi, imatha kuthetsa kapena kufooketsa chikoka cha zinthu zoyipa zonyansa pa cyanide leaching ya golidi, potero kulimbikitsa kusungunuka ndi kutulutsa kothandizira pa golide, ndikuchepetsa mtengo wopangira ndikuwongolera phindu lazachuma lamakampani.

Zothandizira zowonjezedwa nthawi zambiri pakutulutsa mulu zimaphatikiza ma oxidants, ma leaching agents, zonyowetsa, ndi zina.

• Kuonjezera mpweya - okhala ndi okosijeni (H₂O₂, CaO₂, Na₂O₂, etc.) pa cyanide leaching ndondomeko akhoza kuonjezera "yogwira yogwira mpweya" mu zamkati, potero kusintha leaching zotsatira za golide ore.

• Kuonjezera kuchuluka koyenera kwa chonyowetsa kapena chowonjezera chowonjezera ku yankho la cyanide kumathandizira kulowa kwa yankho la cyanide ndikulimbikitsa zomwe zimachitika pakati pa cyanide solution ndi golide wokutira.

6. Kutsiliza

Nkhaniyi ikukamba kwambiri za milu ya leaching ya migodi ya golide. Njira yodulira miluyo imakhala ndi mawonekedwe osavuta, kugwiritsa ntchito bwino, komanso kugwira ntchito kwachuma, komwe kumalandiridwa ndi eni ake ambiri amigodi ya golide. Komabe, golide m'zigawo zotsatira za mulu leaching ndondomeko amakhudzidwa ndi mbali zambiri. Ndikoyenera kuti eni migodi akonze dongosolo loyenera la mulu wa mulu kudzera mu kamangidwe ka sayansi. Yesani ndikusankha zida zoyenera zodulira mulu, ndipo zosintha zitha kupangidwa malinga ndi momwe zinthu zilili pafakitale potengera mfundo zisanu zotsatirazi:

• Kugwiritsa ntchito ukadaulo wa granulation mu ore wokhala ndi magiredi abwino kwambiri kapena dongo lalitali komanso mpweya wosakwanira.

• Kupititsa patsogolo permeability wa mulu wa ore ndi njira yothetsera.

• Kusunga kutentha koyenera kwa leaching.

• Kugwiritsa ntchito kukapanda kuleka ulimi wothirira.

• Kugwiritsa ntchito zosefera zothandizira.

Ngati muli ndi chidwi ndi mulu leaching ndondomeko, chonde kusiya uthenga kulankhula nafe kapena funsani makasitomala athu Intaneti, ndipo ife kukumana nanu posachedwapa.