![\"Al\u00fcmina](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/04\/Alumina-Refinery.jpg\")
<\/p>\nAl\u00fcmina Rafinerisi: A\u011f\u0131r \u015fekilde kirlenmi\u015f al\u00fcminyum hurdas\u0131n\u0131 ar\u0131tmak i\u00e7in, erime noktas\u0131n\u0131n 50\u00b0-100\u00b0 C \u00fczerine \u0131s\u0131t\u0131lm\u0131\u015f alkali ve alkali toprak klor\u00fcrleri ile flor\u00fcrlerinden olu\u015fan bir tuz eriyi\u011fi kullan\u0131l\u0131r. 400\u00b0-500\u00b0 C'ye \u00f6nceden \u0131s\u0131t\u0131lm\u0131\u015f al\u00fcminyum hurda, yo\u011funlu\u011fu daha d\u00fc\u015f\u00fck olan tuz eriyikini i\u00e7eren bir eritme veya tutma f\u0131r\u0131n\u0131na eklenir; kar\u0131\u015f\u0131m gerekirse kar\u0131\u015ft\u0131r\u0131l\u0131r ve ard\u0131ndan en az bir saat boyunca yukar\u0131da belirtilen erime s\u0131cakl\u0131\u011f\u0131nda tutulur. \u00d6nce \u00e7\u00f6kelmi\u015f metal faz\u0131, ard\u0131ndan tuz eriyi\u011fi, dayan\u0131kl\u0131 a\u00e7\u0131k g\u00f6zenekli seramik bir filtreden s\u00fcz\u00fcl\u00fcr ve b\u00f6ylece kat\u0131 safs\u0131zl\u0131klardan ar\u0131nd\u0131r\u0131l\u0131r. Al\u00fcminyum, safla\u015ft\u0131rma amac\u0131yla bir elektrolitik h\u00fccreye aktar\u0131l\u0131r ve erimi\u015f tuz eriyi\u011fi geri d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr.<\/p>\n
Bu bulu\u015f, alkali veya alkali toprak klor\u00fcr ve flor\u00fcr tuzlar\u0131ndan olu\u015fan bir eriyik kullan\u0131larak, yo\u011fun \u015fekilde kirlenmi\u015f al\u00fcminyum hurdas\u0131n\u0131n ar\u0131t\u0131lmas\u0131na y\u00f6nelik bir y\u00f6ntemle ilgilidir.<\/p>\n
A\u015f\u0131r\u0131 kirlenmi\u015f al\u00fcminyum hurdas\u0131n\u0131n ar\u0131t\u0131lmas\u0131nda cam, oksit ve ta\u015f par\u00e7ac\u0131klar\u0131 genel olarak \u00e7ok zararl\u0131d\u0131r; \u00f6zellikle de al\u00fcminyum konsantrasyonu a\u011f\u0131rl\u0131k\u00e7a \u2019nin alt\u0131nda oldu\u011funda. Bu t\u00fcr yabanc\u0131 maddelerin giderilmesi, bu ama\u00e7la geleneksel teknolojilerin kullan\u0131lmas\u0131 durumunda \u00f6nemli zorluklara neden olmu\u015ftur. Ancak, \u00fc\u00e7 katmanl\u0131 elektroliz, bipolar elektroliz veya fraksiyonel kristalizasyon yoluyla elektrolitik ar\u0131tma yap\u0131lmadan \u00f6nce, kirletici kat\u0131 madde par\u00e7ac\u0131klar\u0131n\u0131n uzakla\u015ft\u0131r\u0131lmas\u0131 gerekir.<\/p>\n
G\u00fcn\u00fcm\u00fczde ikincil al\u00fcminyum end\u00fcstrisinde geleneksel i\u015flemlerde kullan\u0131lan tuzlar, oksitlerin y\u00fcksek konsantrasyonu nedeniyle a\u015f\u0131r\u0131 derecede t\u00fcketilmektedir.<\/p>\n
Dolay\u0131s\u0131yla, bu bulu\u015fun amac\u0131, alkali ve alkali toprak klor\u00fcrleri ile flor\u00fcrlerinin erimi\u015f tuzlar\u0131ndan olu\u015fan bir eriyik kullan\u0131larak, yo\u011fun \u015fekilde kirlenmi\u015f al\u00fcminyum hurdas\u0131n\u0131 ar\u0131tmaya y\u00f6nelik bir y\u00f6ntem geli\u015ftirmektir; bu y\u00f6ntem, ekonomik olmal\u0131 ve y\u00fcksek verimlilikle \u00e7al\u0131\u015fmal\u0131d\u0131r.<\/p>\n
<\/p>\n
Bu ama\u00e7, bulu\u015f sayesinde, 400\u00b0-500\u00b0 C\u2019ye \u00f6nceden \u0131s\u0131t\u0131lm\u0131\u015f al\u00fcminyum hurdas\u0131n\u0131n, erime noktas\u0131n\u0131n 50\u00b0-100\u00b0 C ve \u00e7al\u0131\u015fma s\u0131cakl\u0131\u011f\u0131nda al\u00fcminyumdan daha d\u00fc\u015f\u00fck bir yo\u011funlu\u011fa sahip olan erimi\u015f tuzlar kar\u0131\u015f\u0131m\u0131na beslenir ve erimi\u015f kar\u0131\u015f\u0131m, bir eritme veya tutma f\u0131r\u0131n\u0131nda bu s\u0131cakl\u0131kta en az bir saat boyunca tutulur,<\/p>\n
Daha sonra, \u00f6ncelikle bekletme s\u0131ras\u0131nda \u00e7\u00f6kelmi\u015f olan erimi\u015f al\u00fcminyum, ard\u0131ndan da erimi\u015f tuz eriyi\u011fi, her iki s\u00fcz\u00fcnt\u00fcye de dayan\u0131kl\u0131 olan a\u00e7\u0131k g\u00f6zenekli bir seramik filtreden s\u0131ras\u0131yla ge\u00e7irilerek kat\u0131 safs\u0131zl\u0131k maddelerinden ayr\u0131l\u0131r ve<\/p>\n
Son olarak, s\u00fcz\u00fclm\u00fc\u015f erimi\u015f al\u00fcminyum, ar\u0131tma amac\u0131yla bir elektrolitik h\u00fccreye, tuz eriyi\u011fi ise yeniden kullan\u0131lmak \u00fczere bir eritme veya bekletme f\u0131r\u0131n\u0131na g\u00f6nderilir.<\/p>\n