Zotsatira za Sodium Cyanide Leaching Time pa Recovery Rate

Introduction

Cyanide leaching ndi njira yomwe imagwiritsidwa ntchito kwambiri pochotsa golide ku miyala ya golide. Zina mwazinthu zosiyanasiyana zomwe zimakhudza cyanide kuchotsa ndondomeko, the nthawi yopuma of sodium cyanide amagwira ntchito yofunika kwambiri pozindikira kuchuluka kwa golide. Kumvetsetsa mgwirizano pakati pawo ndikofunikira kuti mukwaniritse bwino cyanide leaching ntchito ndi kupititsa patsogolo bwino chuma cha kupanga golide.

Njira ya Cyanide Leaching

Mu njira ya cyanide leaching, golide mu ore amachitira ndi Sodium Cyanide pamaso pa mpweya kupanga sungunuka golide cyanide complexes. Zomwe zimapangidwira zimatha kufotokozedwa mophweka monga: 4Au + 8NaCN + O₂ + 2H₂O = 4Na[Au(CN)₂] + 4NaOH. Izi zimachitika pamwamba pa tinthu tating'onoting'ono ta golide, ndipo kuchuluka kwake komanso momwe zimachitikira zimakhudzidwa ndi zinthu zingapo, pomwe nthawi ya leaching imakhala imodzi mwazofunikira kwambiri.

Momwe Leaching Time Imakhudzira Chiwongola dzanja

Gawo Loyamba

Kumayambiriro kwa ndondomeko ya leaching, pamene nthawi ikupita, kuchuluka kwa golide wosungunuka mu yankho kumawonjezeka mofulumira. Tinthu tating'ono ta golide pamwamba pa ore timawukiridwa mwachangu ndi ayoni a cyanide. The mwatsopano pamwamba golide amapereka ambiri anachita malo, ndi ndende gradient pakati pa pamwamba particles golide ndi njira amalimbikitsa kutha kwa golide mosalekeza. Panthawi imeneyi, kuchuluka kwa golidi kumawonetsa kutsika kokwera, ndipo kuchuluka kwa kuchira kumawonjezeka kwambiri pakuwonjezeka kwa nthawi ya leaching.

Middle Stage

Pamene leaching ikupitilira, golidi wakunja kwa tinthu tating'onoting'ono timasungunuka pang'onopang'ono, ndipo tinthu tating'ono ta golide timakhala mozama mkati mwa tinthu tating'onoting'ono kapena timakhala ndi zovuta zophatikizira. Panthawi imeneyi, kuchuluka kwa mankhwalawa kumayamba kuchepa. Ngakhale zomwe zikuchitikabe, kufalikira kwa ayoni a cyanide pamwamba pa tinthu tagolide kumakhala kovuta kwambiri chifukwa chopanga njira yothira mozungulira tinthu tating'onoting'ono komanso kutsekeka kwa zinthu zina zomwe zimachitikira. Komabe, chiwongola dzanja chikuwonjezeka, koma pang'onopang'ono poyerekeza ndi gawo loyamba.

Kenako Gawo

Pambuyo pa nthawi yayitali yotulutsa golide, kutsika kwa golide kumafika pamtengo wokhazikika. Golide wambiri wopezeka mosavuta wasungunuka, ndipo golidi yotsalayo imakhala yabwino kwambiri, atakulungidwa molimba ndi mchere wina, kapena alipo mu mawonekedwe omwe ndi ovuta kuchita ndi cyanide. Kutalikitsa nthawi ya leaching pa siteji iyi sikungakhudze pang'ono kuwonjezera kuchuluka kwa kuchira. M'malo mwake, kupitiliza kukulitsa nthawi ya leaching kumatha kuyambitsa zotsatira zina zoyipa, monga kuchuluka kwa mowa Sodium cyanide, kugwiritsa ntchito mphamvu pakugwiritsa ntchito zida, komanso ziwopsezo zowononga chilengedwe chifukwa chokhala ndi ma cyanide kwa nthawi yayitali.

Mlanduwu Studies

Mlandu woyamba: Mgodi wa Golide ku Shandong, China

Mumgodi wa golidi ku Shandong, ofufuza adachita zoyeserera zingapo za cyanide leaching. Iwo adapeza kuti pamene leaching nthawi inali maola 12, mlingo wobwezeretsa golide unali 60% yokha. Pamene nthawi ya leaching idakulitsidwa mpaka maola 24, chiwopsezo chochira chinakwera mpaka 80%. Komabe, pamene nthawi ya leaching inawonjezedwa mpaka maola 36, ​​chiwerengero cha kuchira chinangowonjezeka pang'ono kufika pa 82%. Izi zikuwonetsa kuti mkati mwamtundu wina, kukulitsa nthawi ya leaching kumatha kuwongolera bwino kuchuluka kwa kuchira, koma pambuyo pofika pamlingo wina, zotsatira zapang'onopang'ono zowonjezera kuchuluka kwa kuchira mwa kukulitsa nthawi ya leaching zimakhala zosayenera.

Mlandu 2: Mgodi Wagolide waku Australia

Mumgodi wa golidi waku Australia, mikhalidwe yosiyana ya nthawi yotulutsa miyala idakhazikitsidwa pamitsuko yosiyanasiyana ya miyala. Kwa ore yokhala ndi mawonekedwe osavuta, pomwe nthawi ya leaching inali maola 18, chiwopsezo cha 85% chidakwaniritsidwa. Koma kwa ore okhala ndi zovuta zambiri zomwe zimakhala ndi zonyansa zambiri, ngakhale pambuyo pa maola 36 a leaching, chiwopsezo chochira chinangofikira 75%. Izi zikuwonetsa kuti kukhudzidwa kwa nthawi ya leaching pamlingo wobwezeretsa kumakhudzananso ndi momwe miyalayi imapangidwira. Ores okhala ndi nyimbo zovuta angafunike nthawi yotalikirapo kuti akwaniritse bwino, koma palinso malire.

Kukhathamiritsa kwa Leaching Time

Kuti muwonjezere nthawi ya leaching, zinthu zingapo ziyenera kuganiziridwa mozama. Choyamba, ndikofunikira kusanthula mwatsatanetsatane ma mineralogical ore kuti mumvetsetse momwe golide amachitikira, monga kukula kwa tinthu ting'onoting'ono ta golide, kuchuluka kwa kuyika, komanso zomwe zili mumchere wogwirizana. Pazifukwa izi, nthawi yoyenera yoyambira imatha kuganiziridwa. Chachiwiri, panthawi ya leaching, kuyang'anitsitsa nthawi yeniyeni ya kuchuluka kwa golide mu njira yothetsera leaching ndi golide wotsalira mu ore akhoza kuchitidwa kupyolera mu zitsanzo ndi kusanthula. Malinga ndi kusintha kwa datayi, nthawi yobwereketsa imatha kusinthidwa munthawi yake. Chachitatu, kuphatikiza ndi zinthu zina zomwe zimakhudza ndondomeko ya leaching, monga kuchuluka kwa sodium cyanide, pH mtengo wa yankho, ndi kutentha, ndondomeko yowonjezera yowonjezera ikhoza kupangidwa kuti ikwaniritse bwino pakati pa chiwerengero cha kuchira ndi ndalama zopangira.

Kutsiliza

Nthawi yotulutsa sodium cyanide imakhudza kwambiri kuchira kwa golide mu njira ya cyanide leaching. Pazigawo zoyamba ndi zapakati za leaching, kukulitsa nthawi ya leaching kumatha kuwonjezera kuchuluka kwa kuchira. Komabe, zikafika pamlingo wina, kukulitsa nthawi ya leaching sikungakhudze kuwongolera kuchuluka kwa kuchira ndipo kungabweretse zovuta zina. Mitundu yosiyanasiyana ya ore imakhala ndi nthawi yofananira yoyenera kukhetsa, yomwe imayenera kutsimikizika poganizira mozama zinthu zosiyanasiyana komanso kuyesa kwenikweni. Ndi kukhathamiritsa nthawi leaching, mphamvu ya golidi cyanide leaching akhoza kusintha, ndi ubwino chuma ndi chilengedwe akhoza kupindula mu migodi golide.