Bincike akan hanawar Arsenic da Sulfur-Iron Inrichment a Cyanidation Tailings

Gabatarwa

Hawan Cyanidation da ake samu a lokacin haƙar ma'adinai a masana'antar ƙarfe yana haifar da ƙalubalen muhalli masu yawa saboda yawan sinadarin arsenic da ke cikinsa. Baya ga damuwar muhalli, waɗannan hayan suna wakiltar wata babbar hanya ta biyu. Don haka, yana da mahimmanci a samar da ingantattun hanyoyi don wadatar da abubuwa masu mahimmanci kamar sulfur da ƙarfe a lokaci guda yayin da ake rage yawan arsenic. Wannan binciken ya mayar da hankali kan hayan Cyanidation daga mai narkar da ma'adinai, yana da nufin cimma waɗannan manufofi ta hanyar tsarin flotation mai kyau.

Hanyoyi

Samfurin Samfura

An samo wutsiyoyi na cyanidation da aka yi amfani da su a cikin wannan binciken daga wani takamaiman smelter. Samfurori na farko an halicce su don fahimtar abubuwan da suke da su na farko da kaddarorin ma'adinai kafin a ci gaba da gwaje-gwajen iyo.

Gwajin Ruwan Ruwa

An yi amfani da Sulfuric acid (H_2SO_4) azaman mai kunna sulfur. An yi amfani da haɗin sodium humate da calcium hypochlorite (Ca(ClO)_2) azaman mai hana arsenic. An gudanar da gwaje-gwajen tuwo da yawa ƙarƙashin yanayin kulawa da hankali. Siffofin gwaji, gami da adadin reagent, ƙarancin ɓangaren litattafan almara, da lokacin iyo, an inganta su don cimma mafi kyawun sakamakon rabuwa.

Dabarun Nazari

An yi amfani da Scanning Electron Microscope (SEM) da X-ray Diffraction (XRD) don nazarin samfuran flotation. An yi amfani da SEM don lura da yanayin halittar jiki da halayen barbashi na samfuran. Binciken XRD ya taimaka wajen gano matakan ma'adinai da ke cikin samfuran, yana ba da haske game da yanayin faruwar arsenic a cikin wutsiyar cyanidation.

results

Gwaje-gwajen flotation sun nuna sakamako na ban mamaki. Matsayin sulfur a cikin mai da hankali ya kai sama da 48%, yayin da aka sami nasarar rage darajar arsenic zuwa ƙasa da 0.2%. Waɗannan sakamakon suna nuna tasirin da aka zaɓa na reagents da ingantaccen tsarin flotation a cimma burin biyu na wadatar sulfur-ƙarfe da kawar da arsenic.

tattaunawa

Jihar Arsenic da ke faruwa

Ta hanyar nazarin SEM da XRD, an ƙayyade yanayin yanayin arsenic a cikin wutsiyar cyanidation. An gano arsenic yana hade da wasu ma'adanai, wanda ya rinjayi halinsa a lokacin aikin hawan ruwa. Fahimtar wannan yanayin faruwa yana da mahimmanci don haɓaka ƙarin dabarun rabuwa da aka yi niyya.

Dalilan Wahalar Rabewar Sulfur da Arsenic

Har ila yau binciken ya gudanar da bincike na farko na dalilan da ke haifar da kalubalen rabuwar sulfur da arsenic a cikin wutsiyar cyanidation. Abubuwan da suka haɗa da ingantaccen yada ma'adanai masu ɗauke da arsenic, hulɗar saman tsakanin ma'adanai daban-daban, da hadadden sinadarai na wutsiya sun ba da gudummawa ga wannan wahala. Amfani da (H_2SO_4), sodium humate, da (Ca(ClO)_2) haɗe ya rage waɗannan ƙalubalen zuwa wani ɗan lokaci, kamar yadda aka tabbatar da kyakkyawan sakamako na ruwa.

Kammalawa

Wannan binciken ya sami nasarar haɓaka tsarin yin iyo don wadatar da baƙin ƙarfe sulfur da cire arsenic daga wutsiyar cyanidation. Amfani da (H_2SO_4) azaman mai kunna sulfur da haɗin sodium humate da (Ca(ClO)_2) azaman mai hana arsenic ya tabbatar da inganci. Binciken SEM da XRD sun ba da haske mai mahimmanci game da yanayin faruwar arsenic da kuma dalilan rarrabuwar sulfur-arsenic mai wahala. Bincike na gaba zai iya mayar da hankali kan ci gaba da inganta tsarin flotation, bincika madadin reagents, da inganta ingantaccen aikin dawo da albarkatu da kare muhalli.