{"id":8817,"date":"2021-05-18T06:46:11","date_gmt":"2021-05-18T06:46:11","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8817"},"modified":"2021-05-18T06:46:11","modified_gmt":"2021-05-18T06:46:11","slug":"molten-alu-purification-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/ar\/molten-alu-purification-treatment\/","title":{"rendered":"Molten Alu Purification Treatment"},"content":{"rendered":"<p>In view of the fact that after the aluminum material is melted, it will continue to oxidize and inhale, causing secondary pollution, so the time of molten Alu purification treatment should be arranged before casting and rolling, it is best to start casting and rolling after purification treatment. For this reason, the molten Alu purification treatment should not only achieve comprehensiveness, but also meet the requirements of timeliness.<\/p>\n<p>The time for the molten aluminum to pass through the <a href=\"http:\/\/www.alalloycasting.com\/ar\/degassing-device-for-molten-aluminum\/\">molten Alu purification device<\/a> is very short. After treatment, it is difficult to completely separate the smaller slag and inclusions from the molten aluminum in such a short time. In order to ensure the cleanliness of the molten aluminum, all purification devices outside the furnace are equipped with filtering devices to remove suspended debris. The sundries in the aluminum liquid are in the form of thin films or particles. There are Al2O3 and SiO2 oxides in the sundries, and there are also AlF3 non-oxides.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8660\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/04\/Ceramic-Foam-Filter-Aluminum-Filtration.jpg\" alt=\"Ceramic Foam Filter Aluminum Filtration\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/04\/Ceramic-Foam-Filter-Aluminum-Filtration.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/04\/Ceramic-Foam-Filter-Aluminum-Filtration-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Aluminum liquid filtration generally uses <a href=\"http:\/\/www.alalloycasting.com\/ar\/ceramic-foam-filter-plates\/\">foam ceramic filter plates<\/a>. When the aluminum liquid passes through the tortuous and interconnected pores foam ceramic filter, the internal debris is deposited on the wall of the pore under the action of fluid power, inertia, interception, collision, and adsorption. So that the clean aluminum liquid enters the cast-rolling plate. The filtration efficiency of the foam ceramic filter is directly related to the diameter of the micropores, but the diameter of the intercepted debris is much smaller than the average diameter of the micropores. Using a filter plate with 12 holes\/cm and a thickness of 50mm can remove 80% of debris and other debris above 100\u03bcm.<\/p>\n<p>In order to improve the filtration efficiency, it is also possible to use glass fiber mesh for coarse filtration first, and then use foam ceramic filters for fine filtration. Tests have proved that liquid aluminum filtration can reduce the end breakage rate of 6m thick aluminum foil during finishing rolling by 44%. Foam ceramic filters are usually replaced once per heat to ensure the passing capacity of the molten aluminum, and prevent the debris and slag particles deposited in the channel from re-entering the molten aluminum.<\/p>","protected":false},"excerpt":{"rendered":"<p>In view of the fact that after the aluminum material is melted, it will continue to oxidize and inhale, causing secondary pollution, so the time&hellip;<\/p>","protected":false},"author":1,"featured_media":8818,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8817","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Molten Alu Purification Treatment with Ceramic Foam Filter<\/title>\n<meta name=\"description\" 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