{"id":6889,"date":"2020-06-17T03:12:38","date_gmt":"2020-06-17T03:12:38","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=6889"},"modified":"2020-06-17T03:12:38","modified_gmt":"2020-06-17T03:12:38","slug":"alu-refining-agent","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/alu-refining-agent\/","title":{"rendered":"Al\u00fcminyum Ar\u0131tma Maddesi"},"content":{"rendered":"

Al\u00fcminyum Ar\u0131tma Maddesi<\/strong> Genellikle alkali metal, alkali toprak metal klor\u00fcr ve flor\u00fcrden olu\u015fur; ba\u015fl\u0131ca bile\u015fenleri ise KCl, NaCl, CaF, Na\u2083AlF\u2086, Na\u2082SiF\u2086 vb.dir.
\nAlu Ar\u0131tma Maddesinin fiziksel ve kimyasal \u00f6zellikleri (erime noktas\u0131, yo\u011funluk, viskozite, u\u00e7uculuk, higroskopiklik ve oksitlerle olan aray\u00fcz\u00fc), ar\u0131tma etkisinde belirleyici bir rol oynar.<\/p>\n

Klor\u00fcr tuzu, al\u00fcminyum ala\u015f\u0131m\u0131 ar\u0131tma maddesinde en yayg\u0131n olarak kullan\u0131lan temel bile\u015fendir; en s\u0131k kullan\u0131lan\u0131 ise 45%NaCl ve 55%KCl\u2019den olu\u015fan bir kar\u0131\u015f\u0131k tuzdur.
\nKat\u0131 Al\u2082O\u2083, inkl\u00fczyonlar ve oksit tabakas\u0131na n\u00fcfuz etme kabiliyetlerinin y\u00fcksek olmas\u0131 nedeniyle, NaCl ve KCl\u2019nin erime s\u0131cakl\u0131\u011f\u0131ndaki \u00f6zg\u00fcl a\u011f\u0131rl\u0131klar\u0131 s\u0131ras\u0131yla sadece 1,55 g\/cm ve 1,50 g\/cm\u2019dir; bu de\u011ferler, erimi\u015f al\u00fcminyumun \u00f6zg\u00fcl a\u011f\u0131rl\u0131\u011f\u0131ndan \u00f6nemli \u00f6l\u00e7\u00fcde daha d\u00fc\u015f\u00fckt\u00fcr.
\nBu nedenle, Alu Rafine Edici Madde, al\u00fcminyum eriyik y\u00fczeyinde iyi bir \u015fekilde da\u011f\u0131labilir ve eriyik y\u00fczeyindeki oksit tabakas\u0131n\u0131 par\u00e7alayarak emebilir.
\nBununla birlikte, ak\u0131\u015fkan sadece klor\u00fcr tuzlar\u0131 i\u00e7erir ve k\u0131r\u0131lma ile adsorpsiyon s\u00fcre\u00e7leri \u00e7ok yava\u015f ilerler; bu s\u00fcre\u00e7leri h\u0131zland\u0131rmak i\u00e7in elle kar\u0131\u015ft\u0131r\u0131lmas\u0131 gerekir.
\nKlor\u00fcr iyonu, d\u00fc\u015f\u00fck y\u00fczey gerilimine ve iyi \u0131slanabilirli\u011fe sahiptir; bu \u00f6zelli\u011fi sayesinde kaplama maddesi olarak uygundur.<\/p>\n

Esas olarak ar\u0131tma amac\u0131yla kullan\u0131lan klor\u00fcr tuzu kar\u0131\u015f\u0131m\u0131na az miktarda flor tuzu (\u00f6rne\u011fin NaF, Na\u2083AlF\u2086, CaF\u2082) ekleyin.<\/strong>
\nFlor\u00fcr i\u00e7eren eriticiler, eriyik y\u00fczeyindeki oksit tabakas\u0131n\u0131 da etkili bir \u015fekilde giderebilir ve gaz giderme etkisini art\u0131rabilir.<\/p>\n

(1) Flor\u00fcr, erimi\u015f al\u00fcminyumla reaksiyona girerek gaz halindeki AlF, SiF\u2084, BF\u2083 vb. bile\u015fikleri olu\u015fturabilir, erimi\u015f al\u00fcminyumdaki oksit tabakas\u0131n\u0131n ayr\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131rabilir ve oksit tabakas\u0131n\u0131 s\u0131k\u0131\u015ft\u0131rabilir.<\/p>\n

(2) Yukar\u0131daki reaksiyonun ger\u00e7ekle\u015fti\u011fi aray\u00fczde olu\u015fan ak\u0131m, oksit tabakas\u0131n\u0131n \u201ctemizlenmesine\u201d ve par\u00e7alanmas\u0131na da neden olur. Bu nedenle, flor tuzunun varl\u0131\u011f\u0131, al\u00fcminyum eriyik y\u00fczeyindeki oksit tabakas\u0131n\u0131n bozulma s\u00fcrecini \u00f6nemli \u00f6l\u00e7\u00fcde h\u0131zland\u0131r\u0131r ve eriyik i\u00e7indeki hidrojen kolayca d\u0131\u015far\u0131 \u00e7\u0131kar.<\/p>\n

(3) Flor\u00fcr (\u00f6zellikle CaF\u2082), kar\u0131\u015f\u0131k erimi\u015f tuzun y\u00fczey gerilimini art\u0131rabilir, adsorbe edilmi\u015f oksidin erimi\u015f tuzunu k\u00fcresel hale getirebilir, erimi\u015f tuzdan ayr\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131rabilir ve c\u00fcruf kal\u0131nt\u0131lar\u0131n\u0131n kayb\u0131n\u0131 azaltabilir.<\/p>\n

\"Al\u00fcminyum<\/p>\n

Al\u00fcminyum ala\u015f\u0131m\u0131 Rafine Ak\u0131<\/strong><\/a>
\nAk\u0131 ar\u0131tma y\u00f6ntemi, metalik olmayan kal\u0131nt\u0131lar\u0131n uzakla\u015ft\u0131r\u0131lmas\u0131nda etkili bir sonu\u00e7 vermektedir.
\nAk\u0131\u015fkan\u0131n fiziksel ve kimyasal \u00f6zelliklerinin yan\u0131 s\u0131ra, safla\u015ft\u0131rma derecesi de b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ar\u0131tma i\u015flemi ko\u015fullar\u0131na ba\u011fl\u0131d\u0131r.
\n\u00d6rne\u011fin, ak\u0131 miktar\u0131, temas s\u00fcresi, ak\u0131 ile eriyik aras\u0131ndaki temas alan\u0131, kar\u0131\u015ft\u0131rma ko\u015fullar\u0131, s\u0131cakl\u0131k vb.<\/p>\n

Al\u00fcminyum ala\u015f\u0131ml\u0131 hurday\u0131 eritirken, hurdan\u0131n kalitesi farkl\u0131l\u0131k g\u00f6sterir ve kaplama maddesi ile ar\u0131tma maddesinin miktar\u0131 da buna g\u00f6re de\u011fi\u015fir.
\nY\u00fcksek kaliteli at\u0131k kal\u0131nt\u0131lar\u0131n\u0131n eritilmesi s\u0131ras\u0131nda, kaplama maddesi ve ar\u0131tma maddesinin miktar\u0131 nispeten azd\u0131r.
\nKalitesiz at\u0131k kal\u0131nt\u0131lar\u0131n\u0131n eritilmesi s\u0131ras\u0131nda, kaplama maddesi ve ar\u0131tma maddesi miktar\u0131 fazlad\u0131r.
\nMagnezyum i\u00e7eri\u011fi y\u00fcksek al\u00fcminyum ala\u015f\u0131mlar\u0131nda, sodyum i\u00e7eren ak\u0131\u015fkanlarla temastan ka\u00e7\u0131nmak i\u00e7in sodyum tuzlar\u0131 i\u00e7ermeyen ak\u0131\u015fkanlar kullan\u0131lmal\u0131d\u0131r.
\nSodyum i\u00e7ermeyen ar\u0131tma maddesi, esas olarak 5052 ve 5754 gibi y\u00fcksek magnezyum i\u00e7erikli ala\u015f\u0131ml\u0131 yass\u0131 k\u00fcl\u00e7eler i\u00e7in kullan\u0131l\u0131r.<\/p>\n

Alu Ar\u0131tma Maddesi Nas\u0131l Kullan\u0131l\u0131r?<\/strong>
\nAl\u00fcminyum Ar\u0131tma Maddesi<\/strong> Bu y\u00f6ntem, al\u00fcminyum ala\u015f\u0131m\u0131 eritme \u00fcretiminde yayg\u0131n olarak kullan\u0131lmaktad\u0131r.
\nAl\u00fcminyum ala\u015f\u0131m\u0131 eriyi\u011fi f\u0131r\u0131nda ar\u0131t\u0131l\u0131r; ak\u0131 maddesi ar\u0131tma tank\u0131na y\u00fcklenir; ar\u0131tma borusu ta\u015f\u0131y\u0131c\u0131 olarak kullan\u0131l\u0131r ve inert gaz, al\u00fcminyum eriyi\u011fine s\u00fcrekli olarak \u00fcflenerek ak\u0131 maddesi ile eriyi\u011fin tam olarak kar\u0131\u015fmas\u0131n\u0131 sa\u011flar.
\nKar\u0131\u015ft\u0131rma, ar\u0131tma amac\u0131na ula\u015f\u0131lmas\u0131n\u0131 sa\u011flayabilir.
\nKar\u0131\u015ft\u0131rma yo\u011funlu\u011fu ne kadar y\u00fcksekse, toz kaplama o kadar homojen olur ve ar\u0131tma etkisi o kadar iyi olur.
\nAncak, al\u00fcminyum eriyikindeki dalgalanman\u0131n \u00e7ok b\u00fcy\u00fck olmamas\u0131 gerekti\u011fi unutulmamal\u0131d\u0131r. Aksi takdirde, yeni bir oksit tabakas\u0131 olu\u015facakt\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"

Alu Refining Agent is usually composed of alkali metal, alkaline earth metal chloride and fluoride, and its main components are KCl, NaCl, CaF, Na3 AlF6, Na2 SiF6 and so on. The physical and chemical properties of Alu Refining Agent (melting point, density, viscosity, volatility, hygroscopicity…<\/p>","protected":false},"author":1,"featured_media":6890,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"\nAlu Refining Agent is usually composed of alkali metal...<\/title>\n<meta name=\"description\" content=\"Alu Refining Agent method is widely used in aluminum alloy smelting production. 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