Udindo wa Sodium Sulfide mu Mineral Processing

Introduction

M'munda wovuta komanso wofunikira wa mineral processing, ma reagents osiyanasiyana amankhwala amagwira ntchito yofunika kwambiri pakuwongolera kulekanitsa ndi kuchotsa mchere wamtengo wapatali. Zina mwa izi, sodium sulfide (Na₂S) imadziwika ngati mankhwala osunthika komanso ogwiritsidwa ntchito kwambiri. Imakhala ndi ntchito zingapo m'mitundu yosiyanasiyana yama mineral process, makamaka mu kuyandama njira, zomwe ndizofunikira pakubwezeretsa bwino kwa mchere kuchokera ku ores.

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 ndiyothandiza inhibitor kwa mchere wambiri wa sulfide ukagwiritsidwa ntchito mochuluka. Dongosolo la zoletsa zake pa mchere wa sulfide nthawi zambiri zimachepa motere: galena, sphalerite, chalcopyrite, bornite, covellite, pyrite, ndi chalcocite. Makamaka, chifukwa cha kuyandama kwachilengedwe kwa molybdenite, sodium sulfide siyingalepheretse. Khalidweli limagwiritsidwa ntchito poyandama molybdenite, pomwe Na₂S ingagwiritsidwe ntchito kupondereza kuyandama kwa mchere wina wa sulfide, kulola kupatukana kosankha kwa molybdenite.

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. Ore Mineralogy: Kusiyanasiyana kwa mineralogy ore kumatha kukhudza kwambiri. Mwachitsanzo, mu oxide ore sulfidization, kukhalapo kwa mchere wosiyanasiyana monga galena, sphalerite, ndi cerussite mu ore kumatha kusokoneza momwe zimachitikira. Mofananamo, kupezeka kwa mchere wosiyanasiyana wa oxide monga malachite, azurite, atacamite, ndi chrysocolla palimodzi kumakhudzanso mphamvu ya sulfidization.

2. Sodium sulfide - kugwiritsa ntchito mchere: Mchere monga pyrite, marcasite, talc, cerussite, dongo, slimes, mchere wamchere wamchere, gypsum, ndi chlorides amatha kudya sodium sulfide. Kumwa kumeneku kungayambitse kusakwanira kwa sodium sulfide yomwe ikupezeka pakuchita zomwe mukufuna pakuyandama, potero kuchepetsa mphamvu yake.

3. PH Mtengo: Pa mlingo waukulu wa sodium sulfide, pH ya ore zamkati imatha kukhala yochulukirapo. Mkhalidwe wowopsawu wa pH sungokhudza momwe amachitira ndi sodium sulfide ndi mchere komanso zimakhudzanso magwiridwe antchito azinthu zina mumayendedwe oyandama, zomwe zimakhudzanso kulekanitsidwa ndi kubwezeretsanso mchere.

4. Malo ndi Chiwerengero cha Magawo Owonjezera a Sodium Sulfide: Mfundo ndi kuchuluka kwa nthawi yomwe sodium sulfide imawonjezeredwa panthawi yoyandama ndizofunikiranso. Malo owonjezera olakwika kapena kuchuluka kosayenera kwa magawo owonjezera angayambitse kugawa kosagwirizana kwa sodium sulfide mu zamkati mwa ore kapena zochitika zosayembekezereka, zonse zomwe zingachepetse mphamvu ya ntchito zake.

5. Mapangidwe a Madzi: Zomwe zimagwiritsidwa ntchito poyendetsa madzi, makamaka zomwe zili ndi calcium, magnesium ions, ndi kuuma kwa madzi, zimatha kuyanjana ndi sodium sulfide ndi mchere. Kuyanjana kumeneku kumatha kulimbikitsa kapena kulepheretsa zochita za sodium sulfide, zomwe zimakhudza gawo lake pakukonza mchere.

Kutsiliza

Sodium sulfide imagwira ntchito zambiri komanso yofunika kwambiri pakukonza mchere, makamaka pakuyandama. Imagwira ntchito ngati inhibitor, sulfidizing wothandizira, desorbing wothandizira, ndi mphamvu yake yochotseratu ma ion owopsa amathandizira kwambiri pakulekanitsa bwino komanso kubwezeretsanso mchere wamtengo wapatali kuchokera kumitundu yosiyanasiyana ya ores. Komabe, kuti mugwiritse ntchito mokwanira mphamvu ya sodium sulfide, ndikofunikira kuganizira mozama ndikuwongolera zinthu zosiyanasiyana zomwe zingakhudze momwe zimagwirira ntchito m'malo ovuta a mineral processing. Pochita izi, makampani opanga mchere amatha kupeza ziwongola dzanja zapamwamba, zotsika mtengo zopangira, komanso chitukuko chokhazikika.