{"id":1177,"date":"2024-08-01T04:10:04","date_gmt":"2024-07-31T21:10:04","guid":{"rendered":"http:\/\/www.tneutron.net\/seni\/?p=1177"},"modified":"2024-07-31T13:45:03","modified_gmt":"2024-07-31T06:45:03","slug":"reactions-combustion-ceramics","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/seni\/reactions-combustion-ceramics\/","title":{"rendered":"Reactions and Combustion Ceramics"},"content":{"rendered":"<p><span class=\"notranslate\">Changes that occur in the burning of ceramic items will depend on the composition of the mixture of materials used for the ceramic body, the heating temperature and the conditions of combustion \/ burning atmosphere (oxidation, reduction and neutral).<\/span> <span class=\"notranslate\"> Overall burning the biscuits can be divided into four phases:<\/span><br \/>\n<span class=\"notranslate\"> a. <strong>Phase evaporation (water smoking):<\/strong> namely mechanical water discharge phases.<\/span> <span class=\"notranslate\"> To set the temperature of the end of the drying stage is very difficult, but a temperature of 150 <sup>\u00b0<\/sup> C is regarded as the final stage of discharge water temperature mechanical.<\/span><\/p>\n<p><span class=\"notranslate\"> b. <strong>Stage of dehydration:<\/strong> at this stage combustion is done slowly, because burning too quickly will result in ceramic objects bursting \/ rupture.<\/span> <span class=\"notranslate\"> Chemically combined water released from the ceramic body at a temperature between 200 <sup>\u00b0<\/sup> C and 460 <sup>o<\/sup> C.<\/span><\/p>\n<p><span class=\"notranslate\"> c. <strong>The oxidation stage:<\/strong> This stage occurs at temperatures between 400 <sup>0<\/sup> C-1100 <sup>0<\/sup> C.<\/span> <span class=\"notranslate\"> When burnt clay, while the carbon content of the oxidation process is not perfect it will lead to the emergence of black bintikbintik and small holes on the surface of the ceramic body.<\/span> <span class=\"notranslate\"> This will impact the movement and heat glaze becomes uneven.<\/span><\/p>\n<p><span class=\"notranslate\"> d. <strong>Stage vitrification:<\/strong> ceramic body and the maturation phase takes place at about 900 <sup>0<\/sup> C.<\/span> <span class=\"notranslate\"> At this stage there is melting and recrystallization.<\/span> <span class=\"notranslate\"> When the temperature is raised further, the melt will penetrate into the pores deeper and produce a solid material.<\/span> <span class=\"notranslate\"> At this stage, the flux will react with clay and tends to soften, and finally when the temperature rises above the vitrification point, it will come out so that the gas bubbles which lead to blisters appear.<\/span> <span class=\"notranslate\"> This is because the flux in boiling ceramic body.<\/span><\/p>\n<p><span class=\"notranslate\"> e. <strong>Stage soaking:<\/strong> process maintain the combustion temperature at a certain point some time (soaking period) in order to reactions that occur evenly across the ceramic part.<\/span> <span class=\"notranslate\"> If the process is deemed to have sufficient soaking period, the furnace can be turned off and cooled within a reasonable time or at least 18 hours.<\/span> <span class=\"notranslate\"> After the cold stove, and the temperatures have reached below 100 <sup>\u00b0<\/sup> C, the furnace can be opened a bit, a few moments later the goods can be unloaded \/ removed.<\/span><\/p>\n<p><span class=\"notranslate\"> <strong>Principles of Combustion Reaction<\/strong><\/span><br \/>\n<span class=\"notranslate\"> Fuel wood, charcoal, oil for burning ceramic is a fuel containing carbon and to react with oxygen (air) that generate heat.<\/span> <span class=\"notranslate\"> The main thing in this combustion reaction is how to drain the air (oxygen) to taste the carbon-containing fuels.<\/span> <span class=\"notranslate\"> In principle, before the combustion process occurs, for solid fuels (wood and charcoal) or liquid (oil) should be turned into a gas that can cause heat.<\/span><\/p>\n<p><span class=\"notranslate\"> Change the fuel into gas will only occur when the combustion temperature rises.<\/span> <span class=\"notranslate\"> The higher the temperature, the faster the combustion process occurs.<\/span> <span class=\"notranslate\"> During the combustion process takes place there needs to be controls in the following:<\/span><br \/>\n<span class=\"notranslate\"> a. <strong>Temperature.<\/strong><\/span> <span class=\"notranslate\"> Temperatures during the combustion process can be measured with thermocouples and pyrometers installed in the furnace.<\/span><\/p>\n<p><span class=\"notranslate\"> b. <strong>Speed Stove Burner (Burner).<\/strong><\/span> <span class=\"notranslate\"> Burning speed can be adjusted by increasing or decreasing the amount of fuel in the combustion chamber by adjusting the fuel valves.<\/span> <span class=\"notranslate\"> By adding the fuel, the incoming air is needed for combustion and must be increased so that there is a balance.<\/span> <span class=\"notranslate\"> Burning speed can be controlled through a thermocouple or pyrometer and adapted to stretch the planned burning.<\/span><\/p>\n<p><span class=\"notranslate\"> c. <strong>Time.<\/strong><\/span> <span class=\"notranslate\"> The time required in the combustion process is determined by three factors, namely high and low temperature combustion to be achieved, the speed of temperature rise, and important capacity furnace.<\/span> <span class=\"notranslate\"> The greater the capacity of the furnace the longer time required for combustion.<\/span><\/p>\n<p><span class=\"notranslate\"> d. <strong>Pull the Chimney.<\/strong><\/span> <span class=\"notranslate\"> Pull chimney governed by skepticism or damper mounted between the furnace and the chimney.<\/span> <span class=\"notranslate\"> The pull of the chimney will affect your fuel consumption efficiency and the temperature rises.<\/span> <span class=\"notranslate\"> When the pull of the chimney is too high \/ fast hot gases do not have enough time to provide heat to the ceramics so that it takes more fuel to be able to raise the temperature.<\/span> <span class=\"notranslate\"> If the chimney is too small tug \/ low then the heat of combustion is not smooth and uneven.<\/span><\/p>\n<p><span class=\"notranslate\"> e. <strong>The atmosphere combustion.<\/strong><\/span> <span class=\"notranslate\"> Atmosphere burning question is oxidation, reduction, or neutral.<\/span> <span class=\"notranslate\"> Atmosphere oxidation will occur when air is needed for combustion excessive compared with the fuel, the reduction will occur when air is needed less, while neutral will occur when the air and fuel balance.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Changes that occur in the burning of ceramic items will depend on the composition of the mixture of materials used<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1812],"tags":[1382,1376,1375,1378,1377,1379,1374,1689,1690],"class_list":["post-1177","post","type-post","status-publish","format-standard","hentry","category-english","tag-advanced-ceramics-combustion-synthesis-and-properties","tag-ceramic-combustion-boats","tag-ceramic-combustion-chamber","tag-ceramic-combustion-chamber-coating","tag-ceramic-combustion-engine","tag-ceramic-combustion-tube","tag-combustion-ceramic","tag-combustion-synthesis-of-ceramics","tag-proceso-de-combustion-ceramicos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Reactions and Combustion Ceramics - TN Seni<\/title>\n<meta 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