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Brick tunnel kiln, 1. High working efficiency, 2. Advance design and technicals - details see: https://www.machineto.com/brick-making-machine-line-brick-tunnel-kiln-for-firing-system-clay-brick-making-machine-10076078

Brick Tunnel Kiln Project - we provide professional technical design and help you to set up project

The Production Line is with Yearly Output of 30 Million Bangladesh Clay Sintering Bricks.

Major Technological Parameters for Tunnel Kiln

Tunnel kiln system and structure

The tunnel kiln has complete system of smoke discharging, cooling, waste heat releasing, pressure balancing under the kiln car, running and detecting system. Baking curve inside of the kiln will be more reasonable, production system more coordination through the adjustment of those system.

At the entrance side, there is a preparatory room, and a cut-off door between the preparatory room and the kiln pre-heating zone. There are entrance and exit doors at both ends of the tunnel kiln. Thus it effectively avoid entering the cold air and ensure the baking system inside not be influenced by outside.

Foundation: Tunnel kiln is with strip foundation. From bottom to up by order is lime soil, rubble, reinforced concrete girder (railway girder)/ board (under kiln wall).

Wall : Red brick is laid for the pre-heating zone and cooling zone where the temperature is below 200°C. The rest is adopt combined wall. The fireclay bricks will be laid on the baking zone and inner wall of insulting zone. The clay insulting bricks will be used for laying the insulting area. Meanwhile, refractory fabric felt (for the relative part of temperature curve above 600 Celsius) or rock wool felt will be used for stuffing and red bricks will be laid on the external wall.

Kiln roof structure: One kiln car space remained in low temperature zone on both sides, which adopt cast-in concrete top slab. For other position, clay material plate, hanger plate through davit hang under H type steel beam by cast product. Both sides firebrick wall support the main beam’s weight. Refractory fibrofelt, rock wool felt, rock wool board are put on the refractory hander plate, which compose complex insulation layer. High temperature binder is being filled up to the gap between the boards, and is being painted on the upside of the insulating layer, thus to ensure the material’s insulativity and structure’s durability.

Coal casting hole: It is with function such as following, replenish heat, debugging, observation, replenish oxygen or cooling under negative pressure, releasing heat under positive pressure etc. This is widely used for tunnel kiln process with inner fuel technology, which can not be cut down or cancelled.

Sand seal: Sand seal slot is being put in the kiln cart skirt board, which insulate the high temperature from outside, thus to avoid cold air sucked into kiln under negative pressure which will lower the kiln temperature, and to avoid high temperature gas go to kiln cart underside under positive pressure which will destroy the kiln cart steel structure or deform the railway.

Productive Technology

Sintering bricks are produced by using clays as raw materials and adopting two-time setting and baking processes, that is Semi-stiff Plastic Extruding Process; Drying in the Tunnel Drying Chamber Process and Baking in the Tunnel Kiln Process.

Main equipment has box feeder, primary roller crusher, fine pulverizing grinder, double shaft mixer, reversible belt conveyor, multi-buckets excavator, mixing and extruder, double stage vacuum extruding machine, tunnel dryer, tunnel kiln.

Finished Tunnel Kiln Project

Note:

1. The fuel coal is calculated on the basis of 5000x4.18 Kilo Joule / Kg.

2. The water consumption includes non-production (living) requirement.

The features of tunnel kiln as following:

1. Operating temperature up to 1000 to 1280. Fast firing and according to various types and shapes of work pieces. And the width of kiln can be 2. 5m to 9. 23m.

2. Fully automatic temperature control provides economic fuel consumption. The fuel consumption automatically adjusts as the temperature is higher or lower during the firing to prevent the unnecessary waste of fuels.

3. Firing with unsealed type kilns, the changes during the firing can be observed by naked eye easily.

4. Lightweight heat insulation materials are used for the inside of the kiln to obtain high efficiency heat insulation and enhance the service life of the kiln.

5. The tunnel kiln is equipped with high efficiency burner and fuels can be fired completely without any air pollution.

6. The quality of firing products is very stable thus reducing unacceptable finished products.

IF YOU NEED AND SET UP THIS PROJECT, PLEASE CONTACT WITH ME: SKYPE : jrowlin , TEL: 0086 185 9199 0621 .