Lead Oxide Yana Haɓaka Leaching na Zinariya a cikin Cyanide Tailings

Gabatarwa

Cyanidation tsari ne da ake amfani da shi sosai wajen fitar da zinare daga ma'adanai. Duk da haka, cyanide jellying sau da yawa yana ɗauke da wani adadin zinare da ya rage, wanda yake da wahalar murmurewa saboda tasirin ma'adanai da ke da alaƙa da shi. Inganta ingancin zubar da zinare daga zubar da cyanide yana da matuƙar mahimmanci ga sake amfani da albarkatu da fa'idodin tattalin arziki. A cikin binciken da aka yi kwanan nan, an gano cewa gubar oxide na iya taka rawa mai kyau wajen haɓaka zubar da zinare a cikin zubar da cyanide.

Matsala ta ƙarancin Leaching na Zinariya a cikin Tail ɗin Cyanide

Babban ƙalubalen da ake fuskanta wajen dawo da zinare daga wutsiyar cyanide yana cikin hadaddun abubuwan da ke cikin ma'adanai. Sauran cyanide a cikin wutsiyar na iya sa zinare ya yi aiki da sulfides na baƙin ƙarfe da ke da alaƙa (kamar pyrrhotite). Wannan amsawar tana samar da fim ɗin passivation na Au/Sx a saman ƙwayoyin zinare. Wannan fim ɗin passivation yana aiki a matsayin shinge, yana hana hulɗa mai tasiri tsakanin maganin zinare da cyanide, don haka yana haifar da ƙarancin yawan zubar zinare na yau da kullun.

Yadda Lead Oxide ke haɓaka Leaching na Zinariya

Makanishin Magance Sinadarai

Gubar oxide yana shiga cikin halayen sinadarai da yawa yayin aikin leaching. Da fari dai, gubar oxide na iya amsawa tare da fim ɗin wucewa da aka kafa akan saman gwal. Wannan halayen yana rushe fim ɗin wucewa, yana mai da shi cikin gishiri mai narkewa. A sakamakon haka, fuskar zinariya ta sake bayyanawa, yana ba da damar cyanide don amsawa da zinariya. Na biyu, gubar oxide na iya aiki azaman oxidant a cikin tsarin leaching. A gaban oxide gubar, ana daidaita yuwuwar oxidation na tsarin, wanda ke da fa'ida ga oxidation na zinari don samar da rukunin cyanide na zinari mai narkewa.

Kayan aikin Electrochemical

Akwai bambanci mai yuwuwar wutar lantarki tsakanin gwal da rage samfurin gubar oxide. Wannan bambanci mai yuwuwa yana ba da damar samuwar baturi na farko a cikin tsarin leaching. A cikin wannan baturi na farko, zinari yana aiki azaman anode kuma yana jurewa oxidation, yayin da rage samfurin gubar oxide yana aiki azaman cathode. Wannan tsarin sinadarai na lantarki, wanda aka sani da lalata lamba, yana hanzarta rushewar gwal yadda ya kamata, ta haka yana haɓaka ƙimar haƙar zinare.

Tabbatar da Gwaji

Kayayyakin Gwaji da Hanyoyi

Masu bincike sun zaɓi samfuran wutsiyar cyanide na wakilci don gwaje-gwaje. Samfurin wutsiya an fara siffanta su don tantance abubuwan ma'adinai da abun ciki na zinariya. Bayan haka, an ƙara adadin gubar gubar daban-daban zuwa tsarin leaching na cyanide. Yanayin leaching, kamar lokacin leaching, zafin jiki, da tattarawar cyanide, an sarrafa su a hankali. An gudanar da jerin gwaje-gwaje masu kama da juna don tabbatar da daidaiton sakamakon. Bugu da kari, an yi amfani da dabarun nazari na ci-gaba, irin su na'urar duba microscopy (SEM) da kuma X-ray photoelectron spectroscopy (XPS), don nazarin yanayin halittar jiki da kuma canje-canjen tsarin sinadaran gwal kafin da bayan leaching.

Sakamakon gwaji

Sakamakon gwaje-gwajen ya nuna cewa ƙara gubar oxide ya ƙara ingancin zubar da zinare a cikin wutsiyoyin cyanide. Idan aka kwatanta da ƙungiyar sarrafawa ba tare da ƙara gubar oxide ba, ƙimar zubar da zinare ta ƙaru da kaso mai ban mamaki. Misali, a wasu gwaje-gwaje, ƙimar zubar da zinare ta ƙaru daga ƙarancin ƙima zuwa sama da [X]%. A lokaci guda, shan Sodium Cyanide shi ma ya ragu zuwa wani mataki. Binciken SEM da XPS ya ƙara tabbatar da cewa gubar oxide ta yi aiki da fim ɗin passivation akan saman zinare, kuma sabbin sinadarai sun bayyana a saman ƙwayoyin zinare bayan ƙara gubar oxide, wanda ya yi daidai da tsarin amsawar da aka tsara.

Aikace-aikace Prospect

Gano amfani da gubar gubar don haɓaka leaching na zinari a cikin wutsiyar cyanide yana da fa'ida mai fa'ida. A cikin masana'antar hakar ma'adinai, ana iya amfani da wannan fasaha ga tsire-tsire masu kula da wutsiyar cyanide. Ta hanyar ƙara gubar gubar kawai zuwa tsarin leaching, za'a iya inganta ƙimar dawo da zinari ba tare da haɓaka manyan kayan aiki ba. Wannan ba kawai yana ƙara darajar tattalin arzikin albarkatun wutsiya ba amma har ma yana rage tasirin muhalli sakamakon adana dogon lokaci na wutsiya mai ɗauke da zinari. Haka kuma, wannan hanya kuma za a iya mika zuwa ga kula da wasu refractory zinariya karfe, samar da wani sabon bayani ga ingantaccen hakar albarkatun zinariya.

A ƙarshe, gubar gubar tana nuna babban yuwuwar haɓaka leaching na zinariya a cikin wutsiyar cyanide. Ta hanyar zurfin fahimtar tsarin haɓakawa da ci gaba da inganta yanayin gwaji, ana sa ran wannan fasaha za ta taka muhimmiyar rawa a ci gaban masana'antar hakar gwal a nan gaba.