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

3. Furnace structure

• 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.

• Dog house

Batched materials feed into the furnace through dog house, the heat is transferred via flame space to the glass liquid.

• 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.

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.