Auto Bricks (Full Project)

FRIENDS CORPORATION is a leading and trusted auto bricks making machinery supplier in Bangladesh. Automatic Brick manufacturing plant can be supplied with a various capacity depending on the actual needs of client. We supply complete brick making machines with tunnel and Hoffman Kiln, install them and stay with you until the factory come into operation. We provide after sale services to our honorable clients. We co-operate the clients after this time too. Our Services……

A. Project Plan & Design
B. Construction & Implementation
C. Installation (Machinery & Electrical System)
D. Trail Production (One Month)

লোগো ব্রিকস্ মেসিন !!! লোগো ব্রিকস্ মেসিন !!!

নিজের কষ্টের টাকা দাদন দিয়ে, অন্যের উপর নির্ভর করে না থেকে, উন্নত মান সম্পন্ন ইট তৌরী করতে আমাদের লোগো ব্রিকস্ ম্যাসিন ব্যাবহার করূন। জেনারেটর দিয়ে চালান যাবে। মাত্র ৪জন লোক দিয়ে প্রতি ঘন্টায় ৫,০০০ পিছ ইট তৌরী করতে পারবেন, ৬০% শুকনো থাকায়—খুব দ্রূত পোড়ানো যায়। 
বিস্তারিতভাবে জানতে যোগাযোগ করূনঃ-
“ফ্রেন্ডস করর্পারেসন”
ফ্লাট নং # ই-২, প্লোট নং # ৩/বি, শাহ্ সাহেব নগর, মধ্য প্যাইকপাড়া, ( মিরপুর-১, আনসার ক্যাম্প এর পার্শ্বে )
Mobile: 01784-397 452

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Clay Brick Producing Technical Process:

Most brickwork have some or all of the following:

A kiln, for firing, or ‘burning’ the bricks. Drying yard or shed, for drying bricks before firing. A building or buildings for manufacturing the bricks. A quarry for clay. A pugmill or clay preparation plant In a typical modern brickwork, clay is taken from the quarry, and then carried by conveyor belt or truck/lorry to the main factory, although it may be stockpiled outside before entering the machinery. When the clay enters the preparation plant (Clay Prep) it is crushed, and mixed with water and other additives which may include breeze, a very fine anthracite that aids firing. This process, which is also known as pug milling  improves the consistency, firing qualities, texture, and color of the brick. From here, the processed clay can be extruded into a continuous strip and cut with wires, or put into molds or presses (also referred to as forming) to form the clay into its final shape. After the forming or cutting, the bricks must be dried, either in the open air, in drying sheds, or in special drying kilns. When the bricks have been dried, they must then be fired or ‘burnt’ in a kiln, to give them their final hardness and appearance.

A-1. Clay Bricks Production Process With Tunnel Dryer and Hoffman Kiln

The Hoffmann kiln is a series of batch process kilns. Hoffmann kilns are the most common kiln used in production of bricks and some other ceramic products. Patented by German Friedrich Hoffmann for brickmaking in 1858, it was later used for lime-burning, and was known as the Hoffmann continuous kiln. A Hoffmann kiln consists of a main fire passage surrounded on each side by several small rooms. Each room contains a pallet of bricks. In the main fire passage there is a fire wagon, that holds a fire that burns continuously. Each room is fired for a specific time, until the bricks are vitrified properly, and thereafter the fire wagon is rolled to the next room to be fired. Each room is connected to the next room by a passageway carrying hot gases from the fire. In this way, the hottest gases are directed into the room that is currently being fired. Then the gases pass into the adjacent room that is scheduled to be fired next. There the gases preheat the brick. As the gases pass through the kiln circuit, they gradually cool as they transfer heat to the brick as it is preheated and dried. This is essentially a counter-current heat exchanger, which makes for a very efficient use of heat and fuel. This efficiency is a principal advantage of the Hoffmann kiln, and is one of the reasons for its original development and continued use throughout history. In addition to the inner opening to the fire passage, each room also has an outside door, through which recently-fired brick is removed, and replaced with wet brick to be dried and then fired in the next firing cycle. In a classic Hoffmann kiln, the fire may burn continuously for years, even decades. Any fuel may be used in a Hoffmann kilns, including gasoline, natural gas, heavy petroleum and wood fuel. The dimensions of a typical Hoffmann kiln are completely variable, but in average about 4 m (height) x 15 m (width) x 150 m (length).

Screenshot 2016-08-21 17.01.25 Screenshot 2016-08-21 17.01.25


A-2. Clay Bricks Production Process With Tunnel Dryer and Tunnel Kiln

In modern brickworks, clay bricks are usually fired in a continuously fired tunnel kiln, in which the bricks move slowly through the kiln on conveyors, rails, or kiln cars to achieve consistency for all bricks. Tunnel kiln is a long structure in which only the central portion is directly heated. From the cool entrance, ware is slowly transported through the kiln, and its temperature is increased steadily as it approaches the central, hottest part of the kiln. From there, its transportation continues and the temperature is reduced until it exits the kiln at near room temperature. The tunnel kiln is composed of of furnace body, traction system, rail, kiln-car, and firing system, hot air ventilation system, control system, etc. The design and manufacture of the tunnel kiln could be negotiated based on customers’ request, including chamber dimension, working Temperature, controlling method and number, traction way and speed as well as heating power. Basically, a brick kiln consists of two main parts. One is drying chamber. The other is tunnel kiln. There is no special burning system for drying chamber. The extra heat used in tunnel kiln will be feedback to drying chamber through a pipe system.  

Screenshot 2016-08-21 16.57.23

A-3. Clay Bricks Production Process With Chamber Dryer and Tunnel Kiln

Clay Bricks Production Process With Chamber Dryer and Tunnel Kiln suited for: 

High quality bricks (External burning bricks, not adding coal inside of bricks raw materials) production; Bricks production with only clay or high ratio of fly ash as raw materials (Say the raw materials in India, Bangladesh); Production of hollow blocks of higher hollow ratio.

B. Clay Brick Producing Equipment

1.Box feeder: A box feeder is designed for storage, dosage and preliminary breaking up of materials used in clay brick production. Their basic functionality is to dose and transport raw material for further production stages.



2. Plate feeder: Plate feeder is used to convey different kinds of particulate, lumpy materials in horizontal or inclined direction in building material, metallurgical, coal and chemical industries, and it’s suitable for feeding lumpy lime stone, gypsum or clay from the bottom of feed bin to the inlet of crusher continuously and evenly.


3. Rubber belt conveyer: Belt conveyor is used in the transmission of sections like Clay Preparation, Molding, Loading & Unloading, etc



4. Double roller crusher: Double roller crusher is mainly used for the crushing of medium or lower-hardness mines and rocks with medium or lower rigidity in the cement, metallurgy, chemical industry, electric power, coal and other industry. The crushing materials include limestone, slag, coke and coal.

Double_roller5. Double shaft mixer: Double Shaft Mixer efficiently mix dry to very wet materials, or blend liquids and sludges with dry solids. Materials can range from wet and sticky clays, sludges, or filter cakes to silty, sandy soils and other abrasives. These machines can be used as pugmills for mixing liquids or sludges with dry solids, especially when a greater tub volume is required for longer retention times. Most often, they are used for the intensive blending of two dissimilar wet or dry materials.



6. Brick extruder: For extruded bricks the clay is mixed with 10-15% water (stiff extrusion) or 20-25% water (soft extrusion). This is forced through a die to create a long cable of material of the proper width and depth. This is then cut into bricks of the desired length by a wall of wires. Most structural bricks are made by this method, as it produces hard, dense bricks, and suitable dies can produce holes or other perforations. The introduction of holes reduces the volume of clay needed, and hence the cost. Hollow bricks are lighter and easier to handle, and have thermal properties different from solid bricks. The cut bricks are hardened by drying for 20 to 40 hours at 50 to 150 °C before being fired. The heat for drying is often waste heat from the kiln.

Vacuum extruder, double stage, hard plastic : Vacuum extruder of hard plastic are mainly used to produce bricks with low plastic materials as raw materials, such as coal gangue, fly ash, shale, sandy soil of poor quality, etc., and produced bricks strength can reach 3.5-4 KG/cm2.

Vacuum extruder, double stage, Split type


Vacuum extruder, double stage, Integral type




Vacuum extruder, double stage, Integral type


7. Cutter, automatic



8. Automatic unfired brick stacking machine


Automatic Unfired Brick Stacking Machine are used to pick up the grouped billet automatically (wet billet or dry billet) and put down them to the assigned position of the kiln car, and Suitable for both once brick setting system and twice brick setting system. There are many ways to putting down the billet ,such as putting down billet in face up or putting down billet in side face. The type of brick stacking machine can be designed according to user’s demand.


Robot brick stacking machine


Our Services

Technology Transfer & Consultancy

(Project Implementation)

For 50,000/100,000 Pecs/Day Capacity Bricks Factory

Full Auto Tunnel Kiln & Dryer Machinery

A. Project Plan & Design:

Digital Sarver
Blower Section
Return Rail Line
Generator, Control Room & Sub-Station
Drain System
Office & Worker Shed
Clay & Coal Stock

B. Construction & Implementation

Construction Supervision
Equipment Installation

C. Installation (Machinery & Electrical System)

Electrical Design & Installation
Machinery Installation

D. Trial Production (Three Month)

Manpower Training
Machinery Trial
Dryer Trial
Kiln Firing Trial
Marketing Trial


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