1. Brief Description
Glass is a special amorphous inorganic nonmetallic material. The
main component is silicate, a non-crystalline solid with an
irregular structure.
Glass furnace is a melting device, which is the most necessary and
important equipment for the glass industry.
Recuperative furnace, with a narrow melting tank, is using a steel
recuperator to pre-heat the combustion air.
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.
The melting process is divided into five stages as following, each
section has its inner connection, affecting each other. If one
stage has imperfect performance, it will influence the next stage,
and ultimately affect the quality of glass.
2. Advantage
| Item | Description |
| 1 | Stable flame |
| 2 | No reversal |
| 3 | Small footprint |
| 4 | Lower investment |
3. Furnace structure
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.
Batched materials feed into the furnace through dog house, the heat
is transferred via flame space to the glass liquid.
The heated air and gas flow into the pre-combustion room for mixing
via this access after they flow out of the regenerator.
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 life span of
furnace.
Furnace melting technology includes temperature, pressure,
bubbling, glass liquid level, fuel, reversing system etc.
The temperature means the temperature the of melting tank, not the
whole furnace. The distribution of temperature is from the melting
tank through the length of the furnace.
Normal temperature measuring points:
- Temperature of port leg
- Temperature of breast wall
- Temperature of flame
- Temperature of glass liquid
The temperature must be strictly controlled, it affects the glass
melting speed, glass liquid convection situation, glass forming
condition, fuel combustion, furnace campaign, etc.
If the furnace is in a negative pressure situation, the cold air
will be absorbed into the flame space and change the internal state
of furnace, reduce the temperature and increase the energy
consumption, even more, the internal temperature of the furnace
will not distribute homogeneously. However, the pressure of the
furnace cannot exceed the standard, if the pressure is too big, it
will increase the energy consumption, shorten the life span of
furnace, and the clearing and cooling of glass liquid will be
affected.
