Udindo wa Sodium Sulfide mu Mineral Processing

Introduction

Mu gawo lovuta komanso lofunikira la kukonza mchere , ma reagents osiyanasiyana a mankhwala amachita gawo lofunikira pakukonza kulekanitsa ndi kutulutsa mchere wamtengo wapatali. Pakati pa izi, sodium sulfide (Na₂S) imadziwika kuti ndi mankhwala ogwiritsidwa ntchito mosiyanasiyana komanso ogwiritsidwa ntchito kwambiri. Ili ndi ntchito zambiri m'mitundu yosiyanasiyana ya ntchito zokonza mchere, makamaka mu njira zoyandama , zomwe ndizofunikira kwambiri pakubwezeretsa bwino mchere kuchokera ku miyala.

Ma Chemical Properties a Sodium Sulfidi

Sodium sulfide ndi mchere wopangidwa kuchokera ku hydrogen sulfide, dibasic acid yofooka. M'madzi amadzi ozizira kutentha komanso kuthamanga kwa mumlengalenga kumodzi, pakati pa mitundu yopitilira 30 ya mamolekyulu ndi ionic sulfure, mitundu isanu ndi umodzi yokha ndiyomwe imakhala yokhazikika pa thermodynamically: HSO₄⁻, SO₄²⁻, H₂S, HS⁻, ndi S²⁻. PH yamadzi am'madzi ndiyofunikira kwambiri pakuwongolera makutidwe ndi okosijeni wa hydrogen sulfide. Pansi pa pH 6. "Molecular hydrogen sulfide" ndi mitundu ya sulfure yomwe imachepetsedwa kwambiri. Pa pH 7. mitundu ya sulfure yochepetsedwa mumsanganizoyo imagawidwa mofanana pakati pa "dissolved hydrogen sulfide" ndi bisulfide mitundu (HS⁻), ndi HS⁻ kukhala mitundu yaikulu mu pH range ya 8 - 11.

Zochita za Sodium sulfide mu Mineral Processing

Inhibitor ya Sulfide Minerals

Sodium sulfide ndi choletsa chogwira ntchito cha mchere wambiri wa sulfide ikagwiritsidwa ntchito mochuluka. Dongosolo la mphamvu yake yoletsa pa mchere wa sulfide nthawi zambiri limachepa motere: galena, sphalerite, chalcopyrite, bornite, covellite, pyrite, ndi chalcocite. Chodziwika bwino n'chakuti, chifukwa cha kuyandama kwachilengedwe kwa molybdenite, sodium sulfide singathe kuiletsa. Khalidweli limagwiritsidwa ntchito poyandama kwa molybdenite, komwe Na₂S ingagwiritsidwe ntchito kuletsa kuyandama kwa mchere wina wa sulfide, zomwe zimapangitsa kuti molybdenite isiyane.

Sulfidizing Agent kwa Non - Ferrous Metal Oxide Ores

Non - ferrous metal oxide ores sangathe kugwidwa mwachindunji ndi osonkhanitsa xanthate. Komabe, sodium sulfide ikawonjezedwa ku zamkati za ore pamaso pa xanthate flotation, imakhudzidwa ndi pamwamba pazitsulo zopanda ferrous metal oxide. Izi zimapangitsa kuti pakhale filimu yopyapyala ya mchere wa sulfide pamwamba pa mchere wa oxide. Mwachitsanzo, miyala yamtovu yoyera ikakumana ndi sodium sulfide, mtundu wake wa pamwamba umasintha kuchoka kuyera kupita kumdima; ndipo malachite akakumana ndi sodium sulfide, mtundu wake wa pamwamba umasintha kuchoka ku wobiriwira kupita ku wakuda wakuda. Kusintha kwamtundu uku kukuwonetsa kupanga bwino kwa filimu ya sulfide yosiyana ndi mchere woyambirira. Pambuyo pa sulfidization, xanthate imatha kugwira bwino mcherewu, motero kuwongolera kuyambiranso kwa chitsulo chosapanga dzimbiri.

Desorbing Agent for Sulfide Mineral Mixed Concentrates

Pamene kuchuluka kwa sodium sulfide kumagwiritsidwa ntchito, kumatha kuwononga xanthate - otolera amtundu wa adsorbed pamwamba pa mchere. Polekanitsa kutsogolera - zinki wosanganiza amaika kapena mkuwa - lead wosanganikirana amaika, zamkati ore akhoza poyamba anaikira. Ndiye, kuchuluka kwa sodium sulfide kumawonjezeredwa kuti awononge osonkhanitsa pa mchere. Pambuyo pake, zamkati zimatsukidwa, ndipo madzi atsopano amawonjezedwa kuti akonzenso zamkati kuti ayendetsedwe motsatira. Njirayi imathandiza kuthetsa kusokoneza kwa osonkhanitsa oyambirira ndikuthandizira kulekanitsa bwino kwa mchere wosiyanasiyana mumagulu osakanikirana.

Kuthetsa Ma Ioni Owopsa mu Zamkati Za Ore

Sodium sulfide imatha kuchitapo kanthu ndi ayoni ambiri achitsulo kupanga ma insoluble sulfide precipitates. Muzamkati mwazitsulo, nthawi zambiri pamakhala ma ion achitsulo omwe amatha kusokoneza kuyandama, monga ma ion azitsulo zolemera. Powonjezera sodium sulfide, ma ion achitsulo owopsawa amatha kuchotsedwa muzamkati mwa ore ngati mawonekedwe a sulfide precipitates, potero kupanga malo abwino opangira kuyandama ndikuwongolera bwino kuyandama.

Zomwe Zimakhudza Kugwiritsa Ntchito Sodium Sulfide mu Mineral Processing

1. Mineralogy ya Madothi : Kusiyanasiyana kwa mineralogy ya madothi kungakhale ndi zotsatirapo zazikulu. Mwachitsanzo, mu oxide ore sulfidization, kukhalapo kwa mchere wosiyanasiyana monga galena, sphalerite, ndi cerussite mu ore kungapangitse kuti njira yochitira zinthu ikhale yovuta. Mofananamo, kupezeka kwa mchere wosiyanasiyana wa oxide monga malachite, azurite, atacamite, ndi chrysocolla pamodzi kumakhudzanso zotsatira za sulfidization.

2. Sodium Sulfide - Mchere Wogwiritsidwa Ntchito : Mchere monga pyrite, marcasite, talc, cerussite, clays, slimes, alkaline earth salts, gypsum, ndi chlorides zimatha kugwiritsa ntchito sodium sulfide. Kugwiritsa ntchito kumeneku kungapangitse kuti sodium sulfide isakwanire mokwanira zomwe zimafunika pa ntchito yoyandama, motero kuchepetsa mphamvu yake.

3. Mtengo wa pH : Ngati sodium sulfide ili ndi mlingo wokwera, pH ya pulp ya ore ikhoza kukhala yochulukirapo. Vuto lalikulu la pH silingangokhudza momwe sodium sulfide imagwirira ntchito ndi mchere komanso limakhudza magwiridwe antchito a zinthu zina mu flotation system, zomwe pamapeto pake zimakhudza kulekanitsidwa ndi kubwezeretsedwa kwa mchere.

4. Malo ndi Chiwerengero cha Magawo Owonjezera Sodium Sulfide : Mfundo ndi kuchuluka kwa nthawi zomwe sodium sulfide imawonjezedwa panthawi yoyandama ndizofunikira kwambiri. Malo owonjezera olakwika kapena kuchuluka kosayenera kwa magawo owonjezera kungayambitse kufalikira kosagwirizana kwa sodium sulfide mu pulp ya ore kapena zochitika zosayembekezereka, zomwe zonsezi zingachepetse kugwira ntchito kwake bwino.

5. Kapangidwe ka Madzi : Kapangidwe ka madzi omwe amagwiritsidwa ntchito poyenda, makamaka kuchuluka kwa calcium, magnesium ions, ndi kuuma kwa madzi, kumatha kuyanjana ndi sodium sulfide ndi mchere. Kuyanjana kumeneku kungayambitse kapena kuletsa zochita za sodium sulfide, motero kumakhudza ntchito yake pakukonza mchere.

Kutsiliza

Sodium sulfide imagwira ntchito yofunika kwambiri pakupanga mchere, makamaka pakuyandama. Ntchito yake ngati choletsa, choteteza sulfidi , chochotsa sorbing, komanso kuthekera kwake kuchotsa ma ayoni owopsa kumathandizira kwambiri pakulekanitsa bwino ndikubwezeretsa mchere wamtengo wapatali kuchokera ku mitundu yosiyanasiyana ya miyala. Komabe, kuti mugwiritse ntchito bwino mphamvu ya sodium sulfide, ndikofunikira kuganizira mosamala ndikuwongolera zinthu zosiyanasiyana zomwe zingakhudze magwiridwe antchito ake m'malo ovuta opangira mchere. Pochita izi, makampani opanga mchere amatha kupeza kuchuluka kwa zinthu zomwe amapeza, kuchepetsa ndalama zopangira, komanso chitukuko chokhazikika.