500KW Zinc Industrial Heat Treat Oven XG 08 Zinc Hot Dip Galvanizing Kettle

Industrial Large 500KW Hot Dip Galvanizing Furnace with XG 08 Zinc Kettle

1.Composition

The hot dip zinc galvanizing furnace is comprised of ① refractory cover plate,

② XG-08 zinc kettle , ③ support bar , ④ refractory/insulation layer,

⑤ furnace shell, ⑥ U-shaped structure, ⑦ flue port, ⑧ burning system, and

⑨ ceramic fiber blanket layer.

2.Hot Dip Galvanizing Furnace Technical Parameters

3.Introduction to Each Unit

3.1 cover plate

The hot dip galvanizing furnace is designed so as to achieve an excellent

heat preservation effect of the furnace, and also consides the factors such

as the form of operation platform, the thermal deformation of zinc kettle,

the convenience in installation and removal of the cover plate, and the form

of the flange. The thickness of each fireproof plate is 50mm, using three

layers of it can obtain the best heat insulation effect at a temperature of 1400 ℃.

3.2 zinc kettle

The zinc kettle is made of XG-08 material which is a paticular material to

meet the process requirement in hot dip galvanizing process.

3.3 support bar

The hot dip galvanizing furnace is designed with 310S stainless steel

support bar with a diameter of 100mm. It can prevent the zinc kettle from

being deformed by heat.

3.4 furnace bottom refractory/insulation layer

Considering the load-bearing capacity of the furnace bottom, the heat

insulation of the concrete foundation, the design of the zinc drain channel

and the layout of the flue, the furnace bottom is made of refractory bricks

and refractory mortar.

Insulation layer is composed of 1260℃ resistant ceramic fiber blankets.

It has the characteristics of good thermal insulation, no thermal expansion

stress, lightweight, easy installation, and maintenance.

3.5 Furnace lining

The hot dip galvanizing furnace lining is made of ceramic fiber blankets

and modules. From the furnace bottom to the top, place one layer of

modules and then one layer of the folded blanket to compensate for the

possible shrinkage between the modules. From the inner side to the steel

wall, the thickness is 400mm for one module is 350mm, and two blankets

in 30mm are compressed to 50mm.

After heat transfer calculation, the temperature at the interface with the

backing fiber blanket is lower than 700℃. The backing fiber blanket can

fully meet the thermal insulation performance which can reduce the

overall cost of the furnace lining.

3.6 U-shaped steel shell

The hot dip galvanizing furnace is composed of H-beams and steel

plates. The H-beam column of the furnace body is 300*300, and

the steel plate thickness of the furnace wall is 10mm. The H-beam

column is welded to the pre-embedded H-beam, and both sides

of the furnace are made of U-shaped support to strengthen the

furnace body.

3.7 Flue gas channel

The hot dip galvanzing furnace is designed according to the flame

speed of the burner, hot air diffusional resistance, convection and

radiation heat transfer efficiency, and in combination with the flue

gas stroke and path.

3.8 Flue port

It is made of ceramic fiber modules. The size and design position of

the flue outlet will affect the circulation, stroke, and speed of flue gas

in the furnace.

3.9 Zinc drain hole

The hot dip galvanizing furnace is composed of refractory bricks and

castable. The zinc drain hole is rectangular like a ditch. And there is

an alarm device, when leakage occurs, the control box displays zinc

leakage alarm.