- Refractory materials for glass furnaces -
Before selecting refractory materials for glass furnaces, you need to first understand the following factors
① Service life of the pool furnace;
② Glass quality requirements;
③ Production capacity, that is, how much melting rate and melting temperature should be selected;
④ Insulation conditions, in order to save fuel, which parts need to be insulated;
⑤ Economic efficiency, that is, how much investment
When selecting refractory materials, it is necessary to meet the use requirements, ensure the economy of the pool furnace, and facilitate production and manufacturing
Ensure use requirements
Various refractory materials used to build glass pool furnaces should meet the following basic requirements:
① It should have high softening and melting temperatures, and the general refractoriness should not be lower than 1580℃
② It has sufficient mechanical strength to resist impact, friction, high-temperature and high-speed flames, smoke and dust scouring and other mechanical effects.
③ High-temperature structural strength is good, and it can withstand mechanical loads for a long time at operating temperature.
④ Strong resistance to the erosion of various components of molten batch materials, molten glass and gaseous substances
⑤ Small pollution to glass.
⑥ Good resistance to rapid cooling and heating (thermal shock).
⑦ Good high-temperature volume stability, small residual shrinkage or expansion.
⑧ Thermal properties such as heat capacity, thermal expansion, and thermal conductivity meet the requirements of use.
⑨ Regular appearance and accurate size.
⑩ Other requirements proposed according to the use conditions (such as the electrical properties of electrode bricks must meet the use requirements).
Refractory materials must be selected according to the different erosion conditions of various parts of the pool furnace.
Ensure the economy of the pool furnace
When selecting refractory materials, it is necessary to pay attention to starting from the actual situation, fully study the balance of the service life of refractory materials in various parts of the entire pool furnace, and achieve greater economic effects with less investment. Fully ensure the economy of the glass pool furnace and the balance of the entire pool furnace life.
Easy to produce and manufacture
When selecting refractory materials, both use and manufacturing should be taken into account. The standardization of refractory brick types and sizes is conducive to the development of refractory production, facilitates the standardization of glass pool furnace design, and is conducive to construction and maintenance. The cost of standard bricks can usually save 30%~50% compared with special-shaped bricks. Therefore, standardized refractory brick types should be given priority for glass pool furnaces.
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