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Ceramic conical mug cup How to develop a ceramic firing atmosphere system |
| Ceramic Mug From:Xinxiang Ceramic Mug Manufacturers 2016-3-10 |
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Ceramic conical ceramic mugs cup
Porcelain blanks in various gaseous medium heat, sintering temperature, and ultimately firing shrinkage, shrinkage rate and stomatal rates are not the same, it should be based on the blank chemical composition of minerals, different iron oxides and titanium content, select different atmosphere system. Southern District multi-use porcelain restore the flame burning system, that a small fire oxidation, fire reduction; more use of all the Northern District of porcelain oxide flame burning.
Formulate atmosphere system, but also to deal with the gaseous medium have a correct understanding of the nature. In general, the nature of the gaseous medium is based on the content of free oxygen in the combustion products and the reducing component to determine, when the kiln gas having an oxidizing ability, the excess air coefficient is greater than 1, the free oxygen content of 4 to 5% called common oxidizing flame; when free oxygen content of 8 to 10%, the known strong oxidizing flame; when the oxygen content of 1 to 1.5%, the kiln having an oxidizing and a reducing gas is not capacity, the excess air factor is equal to 1, called neutral flame; when the free oxygen content of 0-1%, the kiln gas having reducing ability which the excess air coefficient is less than 1, known reducing flame.
For reducing flame firing ceramics, as far as possible so that the percentage concentration of O2 is less than l% or close to zero, the excess air ratio should be less than 1, the concentration of CO can be composed of 2 to 7 percent control in accordance with blanks.
For oxide flame burning ceramic, values porcelain stage should be controlled at 1.2 to 1.7. When heavy oil as fuel, value should be 1.1 to 1.3, with bituminous coal as fuel when, value of 1.3 to 1.7, with gas as fuels, value of 1.05 to 1.15; flue flue gas preheating zone summary the value of 3 to 5.
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