Kugwiritsa ntchito: popanga aluminiyamu hydroxide. Essence: mbewu ya aluminiyamu hydroxide imaphwanyidwa, sakanizani ndi yankho la aluminiyamu. Chotsukiracho chimayikidwa mu incubation ndi kusakaniza ndi carbon dioxide. Kulekanitsa aluminiyamu hydroxide ndi mowa wochuluka. Aluminiyamu hydroxide imatsukidwa.
Kupangidwaku kumakhudzana ndi kupanga aluminiyamu hydroxide.
Njira yopezera hydroxide ya aluminiyamu yabwino [1] momwe njirayi imachitikira m'magawo awiri. Mu gawo loyamba, yankho la aluminiyamu limachotsedwa ndi hydrochloric acid, ndipo hydroxide ya aluminiyamu yofalikira bwino imagwiritsidwa ntchito ngati kuwononga mbewu za yankho la supersaturated aluminate mu gawo lachiwiri.
Choyipa cha njira iyi ndi mtengo wokwera womwe umabwera chifukwa cha kuchepetsedwa kwa asidi, kusungunuka kwa zonyansa mu mayankho, ndi zina zotero.
Njira yoyandikana kwambiri ndi yomwe yapangidwa pano ndi [2] pomwe popanga aluminiyamu hydroxide yabwino ngati mbewu, mumagwiritsa ntchito aluminiyamu hydroxide yophikidwa ndi ufa.
Vuto la njira iyi ndi yankho la wintopo lapamwamba.
Cholinga cha chipangizochi ndi kuchepetsa mtengo wamagetsi pogwiritsa ntchito aluminium hydroxide yabwino kwambiri.
Kugwiritsa ntchito njira zoyeretsera aluminiyamu pogwiritsa ntchito carbon dioxide, njira yoyeretsera kaboni imagwiritsidwa ntchito kwambiri m'mafakitale a alumina omwe amagwira ntchito poyeretsera. Kugwiritsa ntchito kaboniamu kungapereke hydroxide yochuluka.
Kukula kwa tirigu wa aluminiyamu hydroxide komwe kumapezeka mu njira ya carbonization kumadalira kwambiri kutentha kwa carbonization ndi kapangidwe ka mayankho a aluminate (kuchuluka kwa alkali ndi alumina).
Njira yodziwika bwino (Zitsulo zopepuka. 1937, No. 10, S. 8-15) kupanga hydroxide yabwino ya aluminiyamu pogwiritsa ntchito njira ya carbonization, kuphatikizapo kukonza mayankho a carbon dioxide ultracracker aluminate (kuchuluka kwa 200 g/l) pa kutentha kochepa (30zaC).
Ngakhale njira iyi imapereka mphamvu yochuluka ya aluminiyamu hydroxide, kugwiritsa ntchito kwake n'kosatheka chifukwa cha zovuta zaukadaulo zomwe zimachitika kumapeto kwa ndondomekoyi: Dipatimenti ya mvula ndi kutsuka.
Komabe, mukagwiritsa ntchito njira ya nizkokontsentrirovannye ya carbonization, imalephera.
Kukula kwa tirigu wa aluminiyamu hydroxide komwe kumapezeka pansi pa mikhalidwe iyi, komwe kumadziwika ndi kapangidwe kosagwirizana komanso kuchuluka kwa tinthu tating'onoting'ono tambiri.
Kupangidwa kumeneku kumaphatikizapo kuti njira yopangira hydroxide yabwino ya aluminiyamu, yomwe imaphatikizapo kupukutira mbewu ya aluminiyamu hydroxide, kusakaniza ndi yankho la aluminiyamu, kukalamba kwa kuyimitsidwa komwe kumachitika ndi kusakaniza, kulekanitsa hydroxide ya aluminiyamu ndi mowa wothira ndikutsuka, musanalekanitse hydroxide ya aluminiyamu ndi mowa wothira, slurry ya aluminiyamu imachiritsidwa ndi carbon dioxide.
Kafukufuku wasonyeza kuti pokonza mayankho a carbon dioxide aluminate okhala ndi zinthu zolimba zambiri, kukula kwa tinthu timeneti kumakhala kofanana.
Mukapanga mbewu yophwanyidwa mu supersaturated aluminate solution, ndikukalamba, kuyimitsidwa komwe kumachitika ndi kusakaniza kumapanga kuchuluka kwa aluminiyamu hydroxide yomwazika kwambiri. Komabe, phindu la aluminiyamu hydroxide yabwino popanda kukonza kwina kwa kuyimitsidwako ndi lochepa ndipo limadalira kuchuluka kwa caustic alkali mu yankho: kuchuluka kwa alkali, kutulutsa kwake kumachepetsa.
Pokonza carbon dioxide, kuyimitsidwa koyamba kumaperekedwa ndi kutulutsa kwa aluminiyamu hydroxide kumakhala kofanana ndi pokonza kuyimitsidwa pambuyo poyambitsa, komabe, kumawonjezera kwambiri kukula kwa tinthu ta aluminiyamu hydroxide.
Njirayi ingagwiritsidwe ntchito pogwiritsa ntchito zida zomwe zilipo kale.
Njirayi ndi yabwino kwambiri zomera za alumina zochokera ku ukadaulo wa spechitelnoj.
Kuyerekeza deta yochokera ku zoyeserera zingapo kukuwonetsa kuti kukonza slurry ya hydrate yomwe yapezeka pambuyo poika chisakanizo cha aluminate solution ndi mbewu zodulidwa, carbon dioxide imalola kupeza aluminiyamu hydroxide yabwino ndikuwonetsetsa kuti zinthu zikuyenda bwino.
PRI me R 1. 0.02 kg ya aluminiyamu hydroxide yokhala ndi kukula kwapakati pa 2.8 μm idasakanizidwa ndi lita imodzi ya yankho la aluminiyamu yokhala ndi, g/l: Na2CMOS 100,8; Al2O3107,4.
Kuyimitsidwa komwe kunatsatira kunavomerezedwa pa 60zaNdi maola opitilira 10, aluminium hydroxide yoyera inali 40,4, kukula kwa tinthu tating'onoting'ono ta sediment ndi 3.6 μm. Kapangidwe ka gawo lamadzimadzi la suspension, Noi osakaniza, okhala ndi pafupifupi 12. CO2Nthawi yokonza ya maola 6 mpaka kuchuluka kotsala kwa sodium oxide mu yankho pambuyo pokonza ya 5.6 g/L.
Kukula kwa tinthu tating'onoting'ono mu dothi pambuyo pa chithandizo cha 4.8 μm. Kutulutsa kwa aluminiyamu hydroxide 102,5.
PRI mme R 2. 0.02 kg ya aluminiyamu hydroxide yokhala ndi kukula kwapakati pa 2.8 μm idasakanizidwa ndi lita imodzi ya yankho la aluminiyamu ndipo nthawi yomweyo (popanda kukhudzidwa) idachiritsidwa ndi carbon dioxide. Kutalika kwa chithandizo ndi kuchuluka kwa CO22mu chisakanizo cha mpweya chofanana ndi chitsanzo 1.
Mphamvu ya aluminiyamu hydroxide inali 103,1, kukula kwa tinthu tating'onoting'ono ta m'matope a 30.4 μm.
Chifukwa chake, kukhazikitsa njira zomwe zili pamwambapa: kusakaniza kwa yankho la aluminate ndi chotsitsa cha mbewu chophwanyidwa, kuyimitsidwa komwe kumachitika, carbonation slurry isanalekanitsidwe ndi aluminiyamu hydroxide kungapereke mphamvu yayikulu ya aluminiyamu hydroxide.
NJIRA YOPHUNZITSIRA FINE ALUMINUM HYDROXIDE, yomwe ikuphatikizapo kupukusa mbewu ya aluminiyamu hydroxide, kusakaniza ndi yankho la aluminiyamu, kuwononga suspension yomwe yatuluka ndi kusakaniza, kulekanitsa aluminiyamu hydroxide ndi mowa wothira madzi ndikutsuka,
Nthawi yotumizira: Julayi-09-2020