{"id":239214,"date":"2025-05-04T11:17:18","date_gmt":"2025-05-04T09:17:18","guid":{"rendered":"https:\/\/cofermin.de\/a-for-aluminum-oxide\/"},"modified":"2025-11-04T15:16:19","modified_gmt":"2025-11-04T14:16:19","slug":"a-for-aluminum-oxide","status":"publish","type":"post","link":"https:\/\/cofermin.de\/en\/a-for-aluminum-oxide\/","title":{"rendered":"A for aluminum oxide"},"content":{"rendered":"<section class=\"l-section wpb_row height_large\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><div class=\"et_pb_row et_pb_row_0\">\n<div class=\"et_pb_column et_pb_column_4_4 et_pb_column_0 et_pb_css_mix_blend_mode_passthrough et-last-child\">\n<div class=\"et_pb_module et_pb_heading et_pb_heading_0 et_pb_bg_layout_\">\n<div class=\"et_pb_heading_container\">\n<h2 class=\"et_pb_module_heading\">A is for Aluminum Oxide<\/h2>\n<p>Aluminum oxide marks the start of our new social media series, the COFERMIN Raw Materials Alphabet. Over the coming months, we will be presenting selected industrial raw materials and materials from A to Z that form the basis for numerous industries and industrial end products or round off the product. We will look at various evaluation criteria and use them to create a COFERMIN quartet.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><div class=\"w-separator size_small\"><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p><strong>But first of all, what exactly is aluminum oxide?<\/strong><\/p>\n<p>Aluminum oxide, chemically known as Al\u2082O\u2083, is a compound of aluminum and oxygen. It is a white, crystalline powder and occurs naturally mainly as the mineral <span> <\/span><strong>corundum<\/strong><span> <\/span>. Industrially, aluminum oxide is extracted from the ore bauxite using the Bayer process. In this process, bauxite is treated with caustic soda, which produces aluminum hydroxide. This is then converted into aluminum oxide by heating (calcination). Aluminum oxide is also an important intermediate product in the production of metallic aluminum, which is obtained from Al\u2082O\u2083 by fused-salt electrolysis.<\/p>\n<p>Aluminum oxide is an extremely hard material with a Mohs hardness of 9, making it one of the hardest natural substances after diamond. It has a high melting point of around 2,072 \u00b0C, is electrically insulating, and is chemically very stable. One of its special properties is its amphoteric nature, which means that it can react with both acids and bases.<\/p>\n<p><strong>Aluminum oxide is a versatile material with great industrial significance.<\/strong><\/p>\n<p>Its hardness, temperature resistance, and chemical stability make it irreplaceable in many technical and scientific fields. At the same time, it forms the basis for aluminum production and is thus a central component of modern industry.<\/p>\n<p>The possible applications of aluminum oxide are very diverse:<\/p>\n<ul>\n<li>In metallurgy, it serves as the starting material for aluminum production.<\/li>\n<li>In the ceramics industry, it is used for the manufacture of refractory materials and technical ceramics.<\/li>\n<li>Due to its hardness, it is used as an abrasive and polishing agent in numerous industrial processes.<\/li>\n<li>In electronics, it serves as an insulator and protective layer in microchips.<\/li>\n<li>In medical technology, aluminum oxide is used for biocompatible implants such as artificial joints.<\/li>\n<li>It is also used in optics\u2014synthetic rubies and sapphires made of pure Al\u2082O\u2083 are used for lasers and jewelry.<\/li>\n<\/ul>\n<p><strong>Focus on origin and sustainability<\/strong><\/p>\n<p>The origin of aluminum oxide is also an important factor, as it influences the quality of the raw material, its availability, and its regulatory classification. That is why we select our raw materials in line with our ESG commitments. We are committed to reducing social inequalities along the supply chain and promoting sustainable production and logistics processes. (Link to landing page or blog).<\/p>\n<p>Due to these factors and the certainty that we will continue to face challenges in the supply of raw materials, such as fluctuating world market prices, varying qualities, and high regulatory requirements. We create flexible and needs-based delivery capabilities for our customers through our global network and high-quality raw materials.<\/p>\n<p>Aluminum oxide:<\/p>\n<ul>\n<li>Economy: Closely linked to the global aluminum industry. 90% of global Al\u2082O\u2083 production serves this purpose.<\/li>\n<li>Fire resistance: Ideal for high-temperature applications.<\/li>\n<li>Country of origin: China, Brazil, Australia<\/li>\n<li>Sustainability: Medium (recyclable, but energy-intensive to produce)<\/li>\n<li>REACH-compliant: Yes<\/li>\n<\/ul>\n<p><strong>The COFERMIN raw materials alphabet continues!<\/strong><\/p>\n<p>If you say A, you have to say B, so our next blog in this series will be about &#8220;B&#8221; for bentonite. A clay mineral that is in demand in numerous industries as a binding agent, sealant, and filtration aid. But we don&#8217;t want to give too much away. Stay tuned for the next post.<\/p>\n<p>Do you work with aluminum oxide or are you planning a new process? Contact our team for a no-obligation consultation or visit our product overview at <span> <\/span><a href=\"https:\/\/www.cofermin.de\/\">www.cofermin.de<\/a>.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"A is for Aluminum Oxide Aluminum oxide marks the start of our new social media series, the COFERMIN Raw Materials Alphabet. Over the coming months, we will be presenting selected industrial raw materials and materials from A to Z that form the basis for numerous industries and industrial end products or round off the product....","protected":false},"author":28,"featured_media":239069,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[129],"tags":[],"class_list":["post-239214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cofermin-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/posts\/239214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/users\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/comments?post=239214"}],"version-history":[{"count":2,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/posts\/239214\/revisions"}],"predecessor-version":[{"id":239216,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/posts\/239214\/revisions\/239216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/media\/239069"}],"wp:attachment":[{"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/media?parent=239214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/categories?post=239214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cofermin.de\/en\/wp-json\/wp\/v2\/tags?post=239214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}