Refractory Selection Principle for Glass Furnace
Several factors need to be understood before refractory materials are selected
Pool furnace life
Glass quality requirements
Production capacity, the melting rate and melting temperature
Insulation, in which parts to maintain insulation in order to save fuel.
Economic, that is, how much investment.
When selecting refractory materials, it is necessary to meet the requirements for use, to ensure the economics of the pool furnace, and to facilitate production.
Guaranteed Use Requirements
The various refractory materials used in the construction of glass furnaces should meet the following basic requirements.
It should have a high softening temperature, a melting temperature, and a general refractoriness of not less than 1,580℃.
It has sufficient mechanical strength to withstand impact, friction, high temperature and high speed flames, smoke scouring and other mechanical effects.
High temperature structural strength, can withstand mechanical load for a long time at operating temperature.
It has strong resistance to the erosion of molten glass and gasification materials.
The pollution to the glass is small.
Resistance to rapid cooling and rapid heat resistance is good.
High temperature volume stability, residual shrinkage or expansion is small.
Thermal capacity and thermal expansion, thermal conductivity and other thermal properties meet the requirements of use.
The shape is regular and the size is simple.
Other requirements based on the conditions of use (such as the electrical properties of the electrode bricks to meet the requirements of use)
Refractory materials must be selected according to different erosion conditions of each part of the pool furnace
Guarantee the Economics of the Pool Furnace
The selection of refractory materials is based on actual conditions, and the balance of service life of refractory materials in all parts of the kiln is fully studied, and a relatively large economic effect is obtained with less investment. The economy of the glass pool furnace and the balance of the life of the entire pool furnace are fully guaranteed.
Easy to Manufacture
When selecting refractory materials, it is necessary to combine both use and manufacturing. Refractory brick type, the standardization of size is conducive to the development of refractory production, easy to achieve the design of glass furnace design, and is conducive to construction and maintenance. S&P bricks typically cost 30% to 50% less than bricks. Therefore, glass furnaces should be given priority in the use of standardized refractory bricks.
