Customized Melting Furance Design, Solution, Glass Production
1. Brief Description
Glass was used for windows and doors by the Ancient Romans as early as the 4th century.
Glass melting is the most important process in glass production, it is a forming process where the batched materials form a qualified liquid evenly with no bubbles under high temperature heating.
Physicochemical changes in each glass melting stage:
Silicate forming
In this stage, the components of batched materials will produce a physicochemical solid phase reaction during heating process, in which the gaseous products will be released from the batched materials and produce a new opacity sinter ultimately, which is formed by silicate and SiO2.
Glass liquid forming
In this stage, the sinter will be melting and the silicate and SiO2 in sinter will change to flint glass liquid with a plenty of bubbles. However, its chemical components and character are not even.
Clearing
The glass liquid is continuously heated, and its viscosity is reduced with plenty of gaseous sundries released, which should eliminate the visible bubbles with the pool of liquid.
Homogenization
The glass liquid is kept at high temperature for a long time, the ripple eliminates by diffused function and homogenizes as a whole. The temperature of homogenization can be lower than the clearing stage.
2. Type of Furnace
Capacity
| Small scale furnace | Daily furnace capacity: below 50tons |
| Medium scale furnace | Daily furnace capacity: 50tons~150tons |
| Large scale furnace | Daily furnace capacity: 150tons plus |
Heating source
| Fired furnace | The combustion fuel can be natural gas, heavy oil, diesel oil…… for this kind of furnace. |
| Electric furnace | Electricity is the fuel for this kind of furnace. |
| Fired-electric furnace | This kind of furnace is mainly using combustion fuel, electricity is used as a supplementary heating source. |
Flue gas waste heat recovery
3. Furnace structure
According to current fired furnace structure, it is mainly divided into four parts:
- Glass melting section
- Heat source supply section
- Waste heat recovery section
- Gas supply and waste gas exhaust
Melting section:
It is the part which melts batched materials and Clearing and homogenizes glass liquid. In the upper space of the melting section is referred to as the flame space, the lower part is melting tank. The flame comes from the burner through the port, which feds in preheated air
to increase the flame effiency.
Air, gas access
The heated air and gas flow into the pre-combustion room for mixing via this access after they flow out of the regenerator. This is also an access for the flue gas to flow into the regenerator from the flame space.
4. Furnace melting technology system
Reasonable melting technology is a system which could ensure a normal daily production. It will have an important function for high production, high quality, low consumption and furnace campaign.
Furnace melting technology includes temperature, pressure, bubbling, glass liquid level, fuel, reversing system etc.
5. Packing and transportation of furnace equipment and devices
Product Tags:
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Automatic High Temperature 50t Industrial Glass Furnace Images
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