\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0648\u0627\u0644\u062a\u0643\u0631\u064a\u0631<\/a> method\u00a0places the dissolved metal in a vacuum with a small hydrogen partial pressure, or introduces an inert gas into the melt, which provides the driving force for dehydrogenation. In industrial production, inert gas is usually passed into the melt, or a gas-generating flux is pressed into the melt. Since there is no hydrogen at all inside the bubble, that is, the partial pressure of hydrogen is zero, and the partial pressure of hydrogen in the melt around the bubble is greater than or equal to zero. Under the action of the hydrogen partial pressure difference between the inside and outside of the bubble, the dissolved hydrogen atoms diffuse to the melt-bubble interface, where they are combined into hydrogen molecules into the bubble, and then the hydrogen molecules float up with the bubble to the surface of the melt and escape. A process will continue until the partial pressure of hydrogen inside and outside the bubble is equal, that is, it is in equilibrium.<\/p>","protected":false},"excerpt":{"rendered":"In order to obtain a metal melt with low gas content, on the one hand, it is necessary to carefully prepare the materials, strictly control the temperature, quickly melt, and adopt measures such as covering agents to reduce gas absorption. On the other hand, aluminum refining degassing must be carried out in the later stage […]<\/p>\n","protected":false},"author":1,"featured_media":3482,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7750,7749,7732,7733,7734,7737,7736,7735,7730,7729,7728,7727,7731,7740,7747,7741,7742,7746,7745,7748,7743,7744,7738,7739],"class_list":["post-3481","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-refining-degassing-for-alcoa-fjardaal-iceland","tag-aluminum-refining-degassing-for-alcoa-fjardaal-smelter","tag-aluminum-refining-degassing-for-century-aluminium","tag-aluminum-refining-degassing-for-century-aluminium-goose-creek-sc","tag-aluminum-refining-degassing-for-century-aluminium-india","tag-aluminum-refining-degassing-for-century-aluminium-kolkata","tag-aluminum-refining-degassing-for-century-aluminium-railings","tag-aluminum-refining-degassing-for-century-aluminium-works","tag-aluminum-refining-degassing-for-century-aluminum-hawesville","tag-aluminum-refining-degassing-for-century-aluminum-news","tag-aluminum-refining-degassing-for-century-aluminum-robards-ky","tag-aluminum-refining-degassing-for-century-aluminum-sebree","tag-aluminum-refining-degassing-for-century-aluminum-ware","tag-aluminum-refining-degassing-for-fjardaal","tag-aluminum-refining-degassing-for-fjardaal-alcoa","tag-aluminum-refining-degassing-for-fjardaal-aluminium","tag-aluminum-refining-degassing-for-fjardaal-aluminium-smelter","tag-aluminum-refining-degassing-for-fjardaal-project","tag-aluminum-refining-degassing-for-fjardaal-project-iceland","tag-aluminum-refining-degassing-for-fjardaal-projekt","tag-aluminum-refining-degassing-for-fjardaal-smelter","tag-aluminum-refining-degassing-for-fjardaal-smelter-project","tag-aluminum-refining-degassing-for-iceland-casting","tag-aluminum-refining-degassing-for-surf-casting-iceland"],"yoast_head":"\n
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<\/p>\n