Ⅰ、Brief introduction
Tunnel kiln is a continuous heating furnace for producing clay bricks, high alumina bricks, silica brick and other construction clay bricks, etc, whose advantages is too much production capacity and products in good quality. Tunnel kiln structure is variety, Lining materials are with refractory bricks or light insulating bricks, Roof structure is arch-shaped or flat shaped. Outside is with steel shell or with normal red bricks. Different structure designs are in accordance with the specific products and users demands.
Ⅱ、Item and parameters
1. Traditional flat-topped tunnel kiln for silica brick
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/660PT/O |
155m |
2.24m |
1.9m |
27450 pcs |
SI/1087PT/O |
168m |
3.08m |
2.1m |
41586 pcs |
SI/1210PT/O |
180m |
3.2m |
2.1m |
43207 pcs |
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/660PT/G |
155m |
2.24m |
1.9m |
27450 pcs |
SI/1087PT/G |
168m |
3.08m |
2.1m |
41586 pcs |
SI/1210PT/G |
180m |
3.2m |
2.1m |
43207 pcs |
（1）Kiln structure and kiln car
Kiln Wall: From inside to Outside. The pre section of Preheating zone and the post section of Cooling zone: clay bricks, clay insulating bricks and normal red bricks. The post section of the Preheating zone, the pre section of the Cooling zone and the Firing zone: silica bricks, clay insulating bricks and normal red bricks.
1）Roof structure: From inside to Outside. The pre section of Preheating zone and the post section of Cooling zone: clay bricks, clay mortar, clay clinker and normal red bricks. The post section of Preheating zone, the pre section of Cooling zone and Firing zone: silica bricks, clay insulating bricks, clay mortar, clay clinker and normal red bricks. This structure keeps the roof in a permanent high temperature and good insulating and sealing performance. The flat roof is a good structure of tunnel kiln for saving bricks and more even air distribution. The shortcoming is using more steel structure, sealing performance is not good as Arch roof results more heat loss.
2）Kiln car surface is build with Silica bricks, under that is clay bricks. Whose structure decrease the car weight and the heat loss, save the energy, increase the temperature and reduce temperature difference around the kiln.
（2）Character: Heavy, Occupying more space, Lose more heat energy, but low cost.
2. Light flat-topped tunnel kiln for silica brick
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/660PL/O |
155m |
2.24m |
1.9m |
27450 pcs |
SI/1087PL/O |
168m |
3.08m |
2.1m |
41586 pcs |
SI/1210PL/O |
180m |
3.2m |
2.1m |
43207 pcs |
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/660PL/G |
155m |
2.24m |
1.9m |
27450 pcs |
SI/1087PL/G |
168m |
3.08m |
2.1m |
41586 pcs |
SI/1210PL/G |
180m |
3.2m |
2.1m |
43207 pcs |
(1) Kiln structure and kiln car
1）Kiln Wall: From inside to Outside. The Preheating zone and the Cooling zone: silica brick, clay insulating bricks, ceramic fiber blanket, steel shell. The Firing zone: silica bricks, clay insulating bricks, ceramic fiber blankets and steel shell..
2）Roof structure: From inside to Outside. The Preheating zone, the Cooling zone and the Firing zone: Silica bricks, ceramic fiber blankets, rock wool blankets and high temperature seal coating. The flat roof is a good structure for tunnel kiln for saving bricks and more even air distribution. The shortcoming is using more steel structure, sealing performance is not good as Arch roof, more heat loss.
3）Kiln car surface is build with Silica bricks, under that is clay bricks. Whose structure decrease the car weight and the heat loss, save the energy, increase the temperature and reduce temperature difference around the kiln.
（2）Character: Thin and light weight, Occupying small space, easy building and less heat lost, Higher mechanical strength with steel shell.
3. Traditional dome tunnel kiln for silica brick
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/609AT/O |
155m |
2.24m |
1.9m |
23322 pcs |
Item |
Length |
Width |
Height |
Capacity per day for standard bricks |
SI/609AT/G |
155m |
2.24m |
1.9m |
23322 pcs |
3.1 Kiln structure and kiln car
3.1.1 Kiln Wall: From inside to Outside. The pre section of Preheating zone and the post section of Cooling zone: clay bricks and normal red bricks. The post section of the Preheating zone, the pre section of the Cooling zone and the Firing zone: silica bricks, clay insulating bricks and normal red bricks.
3.1.2 Roof structure: From inside to Outside. The pre section of Preheating zone and the post section of Cooling zone: clay bricks, clay mortar, clay clinker and normal red bricks. The post section of Preheating zone, the pre section of Cooling zone and Firing zone: silica bricks, clay insulating bricks, clay mortar, clay clinker and normal red bricks. This structure keeps the roof in a permanent high temperature and good insulating and sealing.
3.1.3 Kiln car surface is build with Silica bricks, under that is clay bricks. Whose structure decrease the car weight and the heat loss, save the energy, increase the temperature and reduce temperature difference around the kiln.
3.2 Character: Less steel structure, good sealing performance, less heat lost, low production efficient results uneven air distribution.