{"id":2461,"date":"2020-08-22T12:27:17","date_gmt":"2020-08-22T12:27:17","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=2461"},"modified":"2020-08-22T12:27:17","modified_gmt":"2020-08-22T12:27:17","slug":"molten-aluminum-refining-process","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/molten-aluminum-refining-process\/","title":{"rendered":"Proses Pemurnian Aluminium Cair"},"content":{"rendered":"<p>Selama proses pemurnian aluminium cair, atom hidrogen yang terlarut dalam aluminium cair berpindah ke bagian tepi gelembung pemurnian (Ar atau N, dll.), kemudian teradsorpsi di sekitar gelembung dan berikatan dengan molekul hidrogen untuk masuk ke dalam gelembung, dan akhirnya mengapung ke atas bersama gelembung tersebut. Proses kinetik seperti cairan pengambilan aluminium. Ini adalah proses di mana hidrogen berdifusi dalam fase cair dan diserap oleh gelembung.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2462\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminum-Refining-Process.jpg\" alt=\"Proses Pemurnian Aluminium Cair\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminum-Refining-Process.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminum-Refining-Process-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>Proses Pemurnian Aluminium Cair<\/h2>\n<p>Dalam proses peleburan paduan aluminium, <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/refining-agent\/\">zat pemurnian<\/a> ditambahkan ke dalam cairan logam, dan melalui serangkaian reaksi fisik dan kimia, tercapailah efek penghilangan inklusi oksida. Kemampuan agen pemurnian dalam menghilangkan pengotor ditentukan oleh adsorpsi dan pelarutan agen pemurnian pada inklusi oksida dalam cairan logam serta efek kimiawi agen pemurnian dalam cairan logam tersebut. Semakin kecil tegangan antarmuka antara agen pemurnian dan inklusi oksida, semakin baik efek adsorpsinya dan semakin kuat pula penghilangan inklusi oksida tersebut.<\/p>\n<p>Cara-cara untuk meningkatkan kecepatan pemurnian adalah:<\/p>\n<p>(1) Tingkatkan jumlah gelembung sebanyak mungkin dan perbesar luas permukaan kontak efektif antara aluminium cair dan gelembung.<\/p>\n<p>(2) Kurangi diameter gelembung sebanyak mungkin, dan tingkatkan kecepatan pergerakan gelembung dalam aluminium cair tanpa menimbulkan percikan di permukaan aluminium cair tersebut; dengan kata lain, tingkatkan intensitas pengadukan, percepat laju pembaruan permukaan gas-cair, dan tingkatkan koefisien transfer massa.<\/p>\n<p>(3) Usahakan agar gelembung-gelembung tersebar secara merata di dalam aluminium cair sebanyak mungkin, yang dapat secara efektif mengurangi jarak difusi hidrogen yang terlarut dalam aluminium cair menuju gelembung-gelembung tersebut, yang setara dengan memperkuat proses difusi atau kapasitas transfer massa.<\/p>\n<p>(4) Memperpanjang jarak apung gelembung dalam aluminium cair sebanyak mungkin untuk meningkatkan waktu tinggal gelembung dalam aluminium cair, yaitu memperpanjang waktu yang dibutuhkan gelembung untuk menghilangkan hidrogen.<\/p>\n<p>(5) Gunakan gas inert dengan kemurnian tinggi, gas reaktif yang tidak larut dalam aluminium cair, atau pemurnian vakum agar konsentrasi hidrogen pada antarmuka gelembung-cairan dalam aluminium cair mendekati nol.<\/p>","protected":false},"excerpt":{"rendered":"<p>During the molten aluminum refining process, the hydrogen atoms dissolved in the molten aluminum undergo migration to the periphery of the refining bubble (Ar or N, etc.), and are adsorbed around the bubble and associated with hydrogen molecules to enter the bubble, and finally float up with the bubble. Kinetic process such as aluminum tapping [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2462,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7029],"class_list":["post-2461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-refining-process-of-molten-aluminum"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Molten Aluminum Refining Process with Grain Refining Agent<\/title>\n<meta name=\"description\" content=\"During the molten aluminum refining process, the dissolved hydrogen atoms migrate to the periphery of the refining bubbles.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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