2mm-10mm Thickness Float Glass Production Factory Treatment
Equipment
1. Brief Description
The float glass has a flatness surface, excellent optical
performance, no distortions, due to its good quality, the yield
float glass can be used for deep processing fabrication.
2. Characteristic
Because the glass liquid forms on the metallic tin liquid surface,
it could achieve a high grade double faced fired polishing glass
surface. The parallelism and flatness of float glass are as better
as mechanical polishing effect, but it has a better mechanical
capacity and chemical stability than mechanical polishing glass.
3. Scope of Supply
- Raw material treatment system
- Internal and external cullet system
- Glass furnace
- Tin bath
- Cold end device
- Utlity equipemnt
- Auto control system
4. Raw Materials
Main materials are mainly including:
| Silica Sand |
| Dolomite |
| Limestone |
| Feldspar |
| Soda Ash |
| Salt Cake |
| Cullet |
Auxiliary materials as the important raw materials, it mainly
includes:
| Clarify Agent |
| Coloring Agent |
| Decolorizing Agent |
| Oxidizing Agent |
| Reducing Agent |
| Combustion Agent |
5. Technical Flow Chart of Float Glass Line
- Qualified batching materials transfer to the furnace for melting.
- Melted glass liquid flows onto tin bath and form a glass plate
through mechanical and chemical methods.
- When the temperature of glass plate reduced around 600°C, it will
conveyor into annealing lehr and relief the stress.
- After inspection and cutting, the yield glass product conveyors to
packing area.
6. Main Equipment Description
6.1 Batch Plant
For batching and mixing the raw materials.
6.2 Furnace
The melting tank is key part of glass production line, the
refractory materials quality is very important.
6.3 Tin Bath
It is a key and one of most important equipment of float glass
production line.
Glass liquid float on the metallic tin, through stretching,
forming, polishing and cooling processing, a qualified glass plate
is formed and its temperature reduces around 600°C, the transition
roller will send the plate to annealing lehr.
6.4.Protection Gas Station
Nitrogen gas, a kind of colorless and odorless gas, which is a main
component of protection gas, with a dissociation states in nature.
An inert gas as nitrogen gas, it can not combust in air nor
dissolve in water, which can prevent the oxidization of metallic
tin, and no reaction between nitrogen gas and metallic tin.
Hydrogen gas is a lightest, colorless and odorless combustion gas,
mainly existing under compound state. It is a strong reducing
agent, with min viscosity, high conductivity and strong chemical
activity, which can have chemical reaction with many materials to
produce various kinds of hydride.
6.5. Annealing Lehr
The purpose of glass annealing is to eliminate the internal
residual stress and optical heterogeneity of float glass in order
to stabilize the internal structure of glass.
Actually, glass annealing process also a cooling process, it need
to control the cooling speed according to different thickness and
requirements. The residual stress in glass after annealing shall
meet the requirement. Meantime, the temporary stress produced
during annealing should not be too much, otherwise the glass will
crack in annealing lehr.
6.6. Colde-end
It mainly divides into three sections for cold-end part in float
glass production line. Details are following:
- Inspection and pretreatment section
- Cutting and break section
- Stacker and packing section
