{"id":87807,"date":"2025-08-14T15:49:25","date_gmt":"2025-08-14T07:49:25","guid":{"rendered":"https:\/\/keruiref.com\/?p=87807"},"modified":"2025-08-14T15:54:39","modified_gmt":"2025-08-14T07:54:39","slug":"diferencas-entre-a-magnesia-queimada-ligeira-e-a-magnesia-queimada-morta","status":"publish","type":"post","link":"https:\/\/keruiref.com\/pt\/diferencas-entre-a-magnesia-queimada-ligeira-e-a-magnesia-queimada-morta\/","title":{"rendered":"Diferen\u00e7as entre a magn\u00e9sia queimada ligeira e a magn\u00e9sia queimada morta"},"content":{"rendered":"<p data-start=\"132\" data-end=\"364\">A magn\u00e9sia ligeiramente calcinada e a magn\u00e9sia calcinada a fundo s\u00e3o ambas produzidas a partir da magnesite, mas diferem significativamente em <strong data-start=\"274\" data-end=\"361\">temperatura de calcina\u00e7\u00e3o, propriedades f\u00edsicas, reatividade qu\u00edmica e aplica\u00e7\u00f5es<\/strong>.<\/p>\n<p data-start=\"132\" data-end=\"364\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86703\" src=\"https:\/\/keruiref.com\/wp-content\/uploads\/2025\/06\/Sintered-Magnesite-Sand-2.webp\" alt=\"\" width=\"660\" height=\"495\" srcset=\"https:\/\/keruiref.com\/wp-content\/uploads\/2025\/06\/Sintered-Magnesite-Sand-2.webp 660w, https:\/\/keruiref.com\/wp-content\/uploads\/2025\/06\/Sintered-Magnesite-Sand-2-300x225.webp 300w, https:\/\/keruiref.com\/wp-content\/uploads\/2025\/06\/Sintered-Magnesite-Sand-2-16x12.webp 16w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/p>\n<hr data-start=\"366\" data-end=\"369\" \/>\n<h2 data-start=\"371\" data-end=\"415\">1. Defini\u00e7\u00e3o e temperatura de calcina\u00e7\u00e3o<\/h2>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"_tableWrapper_1rjym_13 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"416\" data-end=\"937\">\n<thead data-start=\"416\" data-end=\"500\">\n<tr data-start=\"416\" data-end=\"500\">\n<th data-start=\"416\" data-end=\"423\" data-col-size=\"sm\">Item<\/th>\n<th data-start=\"423\" data-end=\"470\" data-col-size=\"md\">Magn\u00e9sia ligeiramente calcinada (MgO ligeiramente calcinada)<\/th>\n<th data-start=\"470\" data-end=\"500\" data-col-size=\"md\">Magn\u00e9sia queimada morta (DBM)<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"586\" data-end=\"937\">\n<tr data-start=\"586\" data-end=\"642\">\n<td data-start=\"586\" data-end=\"616\" data-col-size=\"sm\"><strong data-start=\"588\" data-end=\"615\">Temperatura de calcina\u00e7\u00e3o<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"616\" data-end=\"628\">700-1000\u2103<\/td>\n<td data-col-size=\"md\" data-start=\"628\" data-end=\"642\">1500-2000\u2103<\/td>\n<\/tr>\n<tr data-start=\"643\" data-end=\"840\">\n<td data-start=\"643\" data-end=\"662\" data-col-size=\"sm\"><strong data-start=\"645\" data-end=\"661\">Objetivo principal<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"662\" data-end=\"743\">Remover a \u00e1gua cristalina e o CO\u2082, decompor a magnesite para produzir MgO de elevada atividade<\/td>\n<td data-col-size=\"md\" data-start=\"743\" data-end=\"840\">Sinteriza\u00e7\u00e3o a alta temperatura para reduzir a reatividade, aumentar a densidade e melhorar a refractariedade<\/td>\n<\/tr>\n<tr data-start=\"841\" data-end=\"937\">\n<td data-start=\"841\" data-end=\"858\" data-col-size=\"sm\"><strong data-start=\"843\" data-end=\"857\">Apar\u00eancia<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"858\" data-end=\"889\">P\u00f3 branco ou amarelo claro<\/td>\n<td data-col-size=\"md\" data-start=\"889\" data-end=\"937\">Blocos ou gr\u00e2nulos de cor branco-acinzentada ou amarelo-acinzentada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"939\" data-end=\"942\" \/>\n<h2 data-start=\"944\" data-end=\"982\">2. Propriedades f\u00edsicas e qu\u00edmicas<\/h2>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"_tableWrapper_1rjym_13 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"983\" data-end=\"1471\">\n<thead data-start=\"983\" data-end=\"1046\">\n<tr data-start=\"983\" data-end=\"1046\">\n<th data-start=\"983\" data-end=\"994\" data-col-size=\"sm\">Im\u00f3veis<\/th>\n<th data-start=\"994\" data-end=\"1022\" data-col-size=\"md\">Magn\u00e9sia ligeiramente calcinada<\/th>\n<th data-start=\"1022\" data-end=\"1046\" data-col-size=\"md\">Magn\u00e9sia queimada morta<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1111\" data-end=\"1471\">\n<tr data-start=\"1111\" data-end=\"1195\">\n<td data-start=\"1111\" data-end=\"1126\" data-col-size=\"sm\"><strong data-start=\"1113\" data-end=\"1125\">Atividade<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"1126\" data-end=\"1161\">Elevada (&gt;40% atividade do \u00e1cido c\u00edtrico)<\/td>\n<td data-col-size=\"md\" data-start=\"1161\" data-end=\"1195\">Baixo (&lt;5% de atividade do \u00e1cido c\u00edtrico)<\/td>\n<\/tr>\n<tr data-start=\"1196\" data-end=\"1262\">\n<td data-start=\"1196\" data-end=\"1211\" data-col-size=\"sm\"><strong data-start=\"1198\" data-end=\"1210\">Dureza<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"1211\" data-end=\"1235\">Mais suave, f\u00e1cil de triturar<\/td>\n<td data-col-size=\"md\" data-start=\"1235\" data-end=\"1262\">Muito duro, alta densidade<\/td>\n<\/tr>\n<tr data-start=\"1263\" data-end=\"1316\">\n<td data-start=\"1263\" data-end=\"1282\" data-col-size=\"sm\"><strong data-start=\"1265\" data-end=\"1281\">Densidade a granel<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"1282\" data-end=\"1298\">1,0-2,0 g\/cm\u00b3<\/td>\n<td data-col-size=\"md\" data-start=\"1298\" data-end=\"1316\">3,3-3,45 g\/cm\u00b3<\/td>\n<\/tr>\n<tr data-start=\"1317\" data-end=\"1471\">\n<td data-start=\"1317\" data-end=\"1342\" data-col-size=\"sm\"><strong data-start=\"1319\" data-end=\"1341\">Estabilidade qu\u00edmica<\/strong><\/td>\n<td data-col-size=\"md\" data-start=\"1342\" data-end=\"1386\">Baixa, reage facilmente com \u00e1gua e \u00e1cidos<\/td>\n<td data-col-size=\"md\" data-start=\"1386\" data-end=\"1471\">Muito elevada, excelente resist\u00eancia aos \u00e1cidos, \u00e1lcalis e \u00e0 corros\u00e3o a alta temperatura<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"1473\" data-end=\"1476\" \/>\n<h2 data-start=\"1478\" data-end=\"1503\">3. Principais aplica\u00e7\u00f5es<\/h2>\n<p data-start=\"1504\" data-end=\"1536\"><strong data-start=\"1504\" data-end=\"1534\">Magn\u00e9sia ligeiramente calcinada:<\/strong><\/p>\n<ul data-start=\"1537\" data-end=\"1869\">\n<li data-start=\"1537\" data-end=\"1656\">\n<p data-start=\"1539\" data-end=\"1656\">Produ\u00e7\u00e3o de <strong data-start=\"1553\" data-end=\"1594\">materiais ciment\u00edcios \u00e0 base de magn\u00e9sia<\/strong> (cimento de oxicloreto de magn\u00e9sio, cimento de oxissulfato de magn\u00e9sio)<\/p>\n<\/li>\n<li data-start=\"1657\" data-end=\"1726\">\n<p data-start=\"1659\" data-end=\"1726\"><strong data-start=\"1659\" data-end=\"1684\">Agente de dessulfura\u00e7\u00e3o<\/strong> (produ\u00e7\u00e3o de a\u00e7o, dessulfura\u00e7\u00e3o de gases de combust\u00e3o)<\/p>\n<\/li>\n<li data-start=\"1727\" data-end=\"1787\">\n<p data-start=\"1729\" data-end=\"1787\">Borracha, pl\u00e1sticos, aditivos qu\u00edmicos e aditivos para alimenta\u00e7\u00e3o animal<\/p>\n<\/li>\n<li data-start=\"1788\" data-end=\"1869\">\n<p data-start=\"1790\" data-end=\"1869\">Materiais absorventes ambientais (remo\u00e7\u00e3o de metais pesados, tratamento de \u00e1guas residuais)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1871\" data-end=\"1898\"><strong data-start=\"1871\" data-end=\"1896\">Magn\u00e9sia queimada morta:<\/strong><\/p>\n<ul data-start=\"1899\" data-end=\"2241\">\n<li data-start=\"1899\" data-end=\"2022\">\n<p data-start=\"1901\" data-end=\"2022\">Produ\u00e7\u00e3o de <strong data-start=\"1915\" data-end=\"1954\">materiais refract\u00e1rios \u00e0 base de magn\u00e9sia<\/strong> (tijolos de magn\u00e9sia, tijolos de magn\u00e9sia-carbono, tijolos de magn\u00e9sia-cr\u00f3mio)<\/p>\n<\/li>\n<li data-start=\"2023\" data-end=\"2103\">\n<p data-start=\"2025\" data-end=\"2103\">Revestimentos para fornos de alta temperatura (panelas, conversores, fornos de arco el\u00e9trico)<\/p>\n<\/li>\n<li data-start=\"2104\" data-end=\"2186\">\n<p data-start=\"2106\" data-end=\"2186\">Fabrico de magn\u00e9sia fundida de alta pureza, de materiais refract\u00e1rios \u00e0 base de magn\u00e9sia<\/p>\n<\/li>\n<li data-start=\"2187\" data-end=\"2241\">\n<p data-start=\"2189\" data-end=\"2241\">Revestimentos de prote\u00e7\u00e3o metal\u00fargicos para altas temperaturas<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2243\" data-end=\"2246\" \/>\n<h2 data-start=\"2248\" data-end=\"2278\">4. Resumo das principais diferen\u00e7as<\/h2>\n<p data-start=\"2279\" data-end=\"2305\">Dica de mem\u00f3ria de uma frase:<\/p>\n<blockquote data-start=\"2306\" data-end=\"2532\">\n<p data-start=\"2308\" data-end=\"2532\"><strong data-start=\"2308\" data-end=\"2532\">A magn\u00e9sia de combust\u00e3o leve tem baixa temperatura de calcina\u00e7\u00e3o, alta reatividade e \u00e9 utilizada em produtos qu\u00edmicos e materiais de constru\u00e7\u00e3o; a magn\u00e9sia de combust\u00e3o morta tem alta temperatura de calcina\u00e7\u00e3o, baixa reatividade e \u00e9 utilizada em refract\u00e1rios.<\/strong><\/p>\n<\/blockquote>\n<p data-start=\"2308\" data-end=\"2532\">A KERUI Refractory fornece diferentes tipos de <strong><a href=\"https:\/\/keruiref.com\/pt\/magnesite-sinterizada\/\" target=\"_blank\" rel=\"noopener\">magn\u00e9sio sinterizado<\/a><\/strong> e <strong><a href=\"https:\/\/keruiref.com\/pt\/magnesio-fundido\/\" target=\"_blank\" rel=\"noopener\">magn\u00e9sio fundido<\/a><\/strong>. Se tiver alguma necessidade, contacte-nos para obter o melhor or\u00e7amento.<\/p>","protected":false},"excerpt":{"rendered":"A magn\u00e9sia ligeiramente calcinada (magn\u00e9sia de queima ligeira) e a magn\u00e9sia de queima morta s\u00e3o ambas produzidas a partir da magnesite, mas diferem significativamente na temperatura de calcina\u00e7\u00e3o, nas propriedades f\u00edsicas, na reatividade qu\u00edmica e nas aplica\u00e7\u00f5es. 1. Defini\u00e7\u00e3o e temperatura de calcina\u00e7\u00e3o Item Magn\u00e9sia levemente calcinada (MgO queimado) Magn\u00e9sia queimada morta (DBM) Temperatura de calcina\u00e7\u00e3o 700-1000 \u2103 ... <a title=\"Diferen\u00e7as entre a magn\u00e9sia queimada ligeira e a magn\u00e9sia queimada morta\" class=\"read-more\" href=\"https:\/\/keruiref.com\/pt\/diferencas-entre-a-magnesia-queimada-ligeira-e-a-magnesia-queimada-morta\/\" aria-label=\"Mais em Differences Between Light Burned Magnesia And Dead Burned Magnesia\">Ler mais<\/a>","protected":false},"author":1,"featured_media":86703,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,3],"tags":[],"class_list":["post-87807","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","category-news","no-featured-image-padding","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - 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