{"id":3613,"date":"2020-10-24T15:59:37","date_gmt":"2020-10-24T15:59:37","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=3613"},"modified":"2020-10-24T15:59:37","modified_gmt":"2020-10-24T15:59:37","slug":"removal-of-alkali-metals","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/removal-of-alkali-metals\/","title":{"rendered":"Penghilangan Logam Alkali"},"content":{"rendered":"

Penghilangan logam alkali juga penting dalam proses peleburan dan pengecoran aluminium. Logam alkali dan logam alkali tanah dalam cairan aluminium terutama berasal dari unsur-unsur logam alkali dan logam alkali tanah dalam proses elektrolisis aluminium, seperti Na, Li, Ca, dan sebagainya, serta dari fluks paduan aluminium<\/a>. Fluks paduan aluminium biasanya terdiri dari logam alkali dan logam alkali tanah. Komponen utama klorida dan fluorida adalah KCl, NaCl, NaF, CaF, Na\u2083AlF\u2086, Na\u2082SiF\u2086, dan sebagainya. Setelah fluks digunakan, logam alkali dan logam alkali tanah yang disebutkan di atas akan tetap berada dalam cairan logam.<\/p>\n

\"Penghilangan<\/p>\n

Berbagai percobaan telah membuktikan bahwa penghilangan logam alkali dalam lelehan aluminium dilakukan dengan menggunakan klorin, senyawa yang mengandung klorin (seperti heksakloroetana, karbon tetraklorida, dan sebagainya), atau senyawa yang mengandung fluor di dalam tungku penahan. Lakukan proses pemurnian. Namun, dalam proses penggunaan klorin, klorida, atau fluorida, gas klorin akan mengapung di dalam lelehan aluminium. Klorin dan hidrogen fluorida yang dihasilkan oleh reaksi dengan logam alkali, heksakloroetana, dan tetraklorida setelah pemanasan akan sangat memengaruhi gas karbon. Hal ini dapat merusak lapisan tungku dan memperpendek masa pakai tungku; selain itu, hal ini juga akan menimbulkan bahaya kerja bagi para produsen dan operator.<\/p>\n

Sebuah metode ramah lingkungan dan efisien untuk logam alkali dan logam alkali tanah berhasil dikembangkan melalui reaksi substitusi. Prinsip dasarnya adalah memanfaatkan karakteristik gelombang aktif dari sifat kimia logam alkali dan logam alkali tanah sesuai dengan urutan aktivitas logam, serta menambahkan garam logam lain yang mengandung kation relatif inert. Selanjutnya, garam tersebut dihilangkan melalui metode fisik lainnya.<\/p>\n

Saat ini, pengembangan paduan berkinerja tinggi bergerak ke arah spesifikasi berukuran besar, dan persyaratan terhadap ukuran lempengan cor pun semakin meningkat. Bahaya yang ditimbulkan oleh gas sisa, pengotor, terak, serta logam alkali dan logam alkali tanah dalam cairan paduan aluminium selama proses pembuatan billet cor akan semakin menjadi sorotan.<\/p>","protected":false},"excerpt":{"rendered":"

The removal of alkali metals is also important in aluminum smelting and casting processes. The alkali metals and alkaline earth metals in the aluminum melt mainly come from the alkali metals and alkaline earth metal elements in the aluminum electrolysis process, such as Na, Li, Ca, etc., and also from the aluminum alloy flux. Aluminum […]<\/p>\n","protected":false},"author":1,"featured_media":3614,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-3613","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nRemoval of Alkali Metals in aluminum smelting and casting processes<\/title>\n<meta name=\"description\" content=\"The removal of alkali metals is also important in aluminum smelting and casting processes. 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