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Zig Zag kiln
Zig Zag kiln

zig zag bhatta (kiln) offer 15-20% reduction in Specific Energy Consumption and upto 80% reduction in SPM emissions over FC-BTK.

A higher percentage of Class first bricks are produced as compared to FC-BTK (80-85% Class first bricks as compared to 55-60% in FC-BTK).

High Draught brick kiln
High Draught brick kiln

High Draught Kiln technologies that are more energy-efficient and cause lesser pollution.One such technology named fixed chimney Zig – Zag kiln. The Zig-Zag kiln or the High Draught kiln is similar to firing technologies with essential variations in brick setting patterns where the kiln basic structure remains the same.

Jalai Mistri
Jalai Mistri

Jalai Mistri: We provide the Jalai Labour to the brick field. They are highly experienced abut manage the bricks and burning the fuel. Labour availability is always 24x7

CHIMNEY DESTRUCTION
CHIMNEY DESTRUCTION

Our company provides the facility of chimney destruction within one day by the experts. Somebody wants the destroy the existing brickfield, Our experts destroy within minimum time. We destroy the chimney without any Bomb. 80 Percent of bricks will be safe after the destruction of the chimney.

HYBRID HOFFMANN BHATTA
HYBRID HOFFMANN BHATTA

Which takes the form of two parallel tunnels built side by side, connected by curved tunnels at either end.

With such an arrangement.

Sixteen chambers are about the minimum for effective working; twenty-two chambers are preferable.

Coal Arrangement
Coal Arrangement

Coal Arrangement: We are supplier all over india of coal.
Labour availability is always 24x7

ZIG ZAG KILN ID FAN
ZIG ZAG KILN ID FAN

Zig zag kiln id fan Backed by years of industry experience, we are engaged in offering a premium quality rangeZig zag Kiln ID Fans.

id fan used to reduce air pollutions and also increase the quality of bricks.

HIGH DRAFT KILN ID FAN
HIGH DRAFT KILN ID FAN

We offer High draft Bhatta fans, Heavy Duty fan for high draft Bhatta in ss, FRB Coated big fan, High Draft Bhatta ID Fan, Zig-Zag Kiln ID Fan, and Brick Kiln high draft Fan from India.

BRICKS CLAY MIXING MACHINE
BRICKS CLAY MIXING MACHINE

Boosting our revenue growth and future expansion, we are engaged as manufacturer and exporter of Clay Mixing Machine in Sambhal Uttar Pradesh, India. A single and double screw clay mixing machine with the capacity of i.e. 60000 and 40000 bricks daily. Driven by tractor and JCB also required.

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zig zag bhatta
zig zag bhatta

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Zig Zag technology
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Natural zig zag kiln

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ZIG ZAG BRICK KILN

In a zig-zag brick Kiln, air flows in a zigzag path. Zigzag Kilns are an improvement over Fixed Chimney Bull’s Trench Kilns (FCBTK), in which air flows in a straight-line path. The zigzag airflow considerably improves the combustion of fuel and heat transfer in a Zigzag Kiln, because of which its performance is better than an FCBTK.


what is zig-zag brick kiln technology

In which technology airflow in a zig-zag way. zig zag bricks kiln technology is an improvement over the fixed.

History of Zig zag Brick Kiln

The zigzag firing concept was first used in the Buhrer Kiln, which was patented in 1868 by Jacob Buhrer of Switzerland. The Buhrer Kiln was similar to a Hoffmann Kiln in construction. The main innovation was the zigzag path of airflow. The zigzag path increased the distance traveled by air in the kiln and created turbulence. A fan was used to induce the necessary draught for the airflow.

The zigzag firing concept was later used in Habla Kilns, which were widely used in Germany between the first and second World Wars. They were also popular in Australia. In India, the Zigzag Kiln was first introduced by the Central Building Research Institute (CBRI) during the early 1970s, which was later replicated in Bangladesh and Nepal. These kilns were called Induced/High Draught Zigzag Kilns as they used a fan to create draught for airflow in the kiln.

In the past 40 years, many modifications have happened to the original design and several different variations of High Draught Zigzag Kilns can be found in the field. In recent years, some brick makers have modified the brick setting and practices and are successfully operating the kiln with the natural draught of the chimney without using a fan.


What are the main characteristics/features of Zigzag Kiln technology?

The main characteristics/ features of Zigzag Kiln technology are as given below.

  1. Zig-zag brick Kiln is of rectangular shape. The bricks are fired in the space (called ‘trench’ or ‘dug’) between the rectangular central part of the kiln and the rectangular outer wall of the kiln.
  2. The chimney can be located either at the centre of the kiln or on any side of the kiln.
  3. It is a continuous moving-fire kiln in which the fire burns continuously and moves in a closed rectangular circuit through the bricks stacked in the trench.
  4. The draught required for the flow of air in the kiln is created either by the chimney or by a fan.
  5. In Zigzag Kilns, the bricks are stacked in a manner such that distinct chambers are formed in the brick setting. In alternate chambers, the openings for the flow of air through the brick sets are provided in such a way that it causes the zigzag flow of air in the kiln.
  6. Usually, solid fuels such as coal, wood, sawdust, and agriculture residues are used in Zigzag Kilns.
  7. The size (footprint) of the kiln is generally 65–100 feet (20–30 m) in width and 200–250 feet (60–75 m) in length.
  8. Typical production capacity: 20,000–50,000 bricks per day.
  9. Capital investment required: Rs 30 lakh to Rs 50 lakh (excluding the cost of land and working capital).
  10. Area of land required: 4–6 acres (15,000–25,000 square metres) excluding the land required for excavation of clay.
  11. Seasonal operation: the kiln operates during the dry season only.

What are various types of the zigzag brick setting being practised in Zigzag Kilns?

Single zigzag brick setting (one zigzag air flow stream)

Double zigzag brick setting (two parallel zigzag airflow streams)

Triple zigzag brick setting (three parallel zigzag airflow streams)

In Zigzag Kilns, air flows in a zigzag path. There can be one, two, or three parallel zigzag airflow streams in a kiln. Accordingly, the airflow and the brick sets are called single, double, or triple zigzag airflow and single, double, or triple zigzag brick setting, respectively.

Depending upon the trench width and the draught available in the kiln, single, double, or triple zigzag brick setting is practised in the kiln. For the same trench width, the draught required for airflow in a single zigzag brick setting is higher than that required in the double and triple zigzag brick setting. Also, the draught requirement increases with increase in trench width. Nowadays, in some of the bigger kilns, the quadruple zigzag brick setting is also practised in which there are four parallel zigzag airflow streams.

What are the types of Zigzag kilns?

Zigzag kilns are of two types.

  1. Natural Draught Zigzag Kiln (NDZK), in which the draught required for airflow in the kiln is created by the chimney.
  2. Induced or High Draught Zigzag Kiln (IDZK), in which a fan is used to create the draught for airflow in the kiln.

What are the differences between Natural Draught Zigzag Kilns and Induced Draught Zigzag Kilns?

Natural Draught Zigzag KilnInduced Draught Zigzag Kiln
Draught for airflow
Chimney creates the draught required for the airflow.The fan creates the draught required for the airflow.
Role of chimney
To create necessary draught as well as to expel the flue gases at a certain height as required under environmental rules.Mainly to expel the flue gases at a certain height as required under environmental rules.
Chimney height
Taller chimney (130–150 feet high); the height of the chimney is usually determined by draught requirement.Height of the chimney is relatively lower (80–90 feet); height is usually determined by environment rules.
Kiln draught
Kiln operates at lower draught (6–8 mm water column).Kiln operates at higher draught (30–50 mm water column).
Zigzag setting
Usually, double or triple zigzag brick settings are practised.Usually, a single zigzag brick setting is practised.
Setting density
Relatively loose brick setting (no. of bricks per unit volume is lower).Relatively denser brick setting (no. of bricks per unit volume is higher).
Electricity/diesel requirement
Not required in the operation of the kiln.       Required in the operation of the kiln (to power fan).

What is the typical performance of Zig zag brick Kiln technology?

The performance of Zigzag Kiln technology in terms of energy consumption, product quality, and pollutant emission is given below.

  1. Specific energy consumption (SEC) of Zigzag kiln technology: 0.95–1.15 MJ/kg of fired bricks.
  2. Usually, over 80% of the bricks produced in a Zigzag kiln are of Class-1 quality. The remaining are either over-burnt, under-burnt or breakages.
  3. The emission of particulate matter (PM) in the flue gases is in the range of 30 to 250 mg/Nm3 or about 0.23 g/kg of fired bricks.

What are the main advantages of Zig zag brick Kiln technology?

Zigzag Kilns have several advantages over the traditional FCBTKs:

  1. About 20%–25% savings in fuel consumption.
  2. Better product quality – over 90% of bricks are of Class-1 quality.
  3. Substantial reduction in carbon dioxide (CO2) and PM emissions.

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Zig Zag Bhatta Price

zig zag Bhatta price depends on your city. In India, the price of the material is different for each city.
If you want to make zig-zag kiln then the below material will be required.

zig zag Bhatta price depends on your location.

zig-zag Bhatta price in India


It will cost Rs 30 lakhs to make Zig Zig Bhatta. As per the Government of India rule, you will always have to convert the allowance into Zig Zig Allowance.

zig zag Bhatta (kiln) offers a 15-20% reduction in Specific Energy Consumption and up to 80% reduction in SPM emissions over FC-BTK.

A higher percentage of Class first bricks are produced as compared to FC-BTK (80-85% Class first bricks as compared to 55-60% in FC-BTK).

There is an option for easy Convert of FC-BTK to natural draught Zig-zag kiln and Savings from reduced fuel consumption and an increase in revenue due to a higher percentage of Class I bricks.

The capital cost of retrofitting of existing FC-BTKs ranges from INR 10-25 lakhs and pays back in 3 months-2 years. 

The payback period for the new construction of Zig-zag kiln is 2-3 years. Zig-zag kiln required skilled manpower for its operation.

However, the same workforce working in FC-BTK can be easily trained for operating Zig-zag kilns.

four persons are required for firing at a 6 -hour shift. Natural Draught Zigzag firing kiln is a moving fire kiln in which the fire moves in a closed rectangular circuit.

It has many similarities with FCBTK technology; the main difference being the zigzag airflow path.

The bricks are stacked in such a manner to guide the airflow in a zigzag path.

Zig zag Bhatta flow increases the airflow path length and turbulence in the air, thereby resulting in improved combustion & heat transfer rate and uniform temperature across the kiln cross-section.

 the long firing zone and fuel feeding practice improve the combustion efficiency of the kiln.

The main innovation in natural draught zigzag kiln is that while the traditionally zigzag firing was done with the assistance of fan draught, in this ki

ln, the zig-zag Bhatta operation is achieved through the chimney draught.

The main advantages of natural draft zigzag kilns are reduced energy consumption, reduced pollutant emissions, and improved product quality


Now two technologies are being used in India

1-zig zag kiln technology

1-high draught kiln technology


Zig Zag Bhatta Company is the only company that makes Zig Zig Bhatta and High Draft Bhatta.


We are making allowances for the last 30 years in India. Every year 30 to 40 allowances are being made all over India


The Indian government has now banned the furnace. Now you have to change the allowance to zig-zag or high draft allowance.

2-high draft technology in India

High Draught Kiln technologies that are more energy-efficient and cause lesser pollution.One such technology named fixed chimney Zig – Zag kiln. The Zig-Zag kiln or the High Draught kiln is similar to firing technologies with essential variations in brick setting patterns where the kiln basic structure remains the same. The principle followed in this family of high draught kiln types is to prolong the travel path of the fire. This high thermal efficiency of the kiln reduces fuel consumption by 25%. The earliest type of this technology was termed as Zig-Zag kiln and high draught kiln developed in the early 1900s. Various reforms were also built which were relatively inexpensive variants adopted by small brick manufacturers. The design of this type of kiln ensures continuous operation of the kiln. zig zag bhatta price
One of the more developed variants was The Habla Kiln. It was essentially an arch less zig-zag kiln patented in 1920 by British Engineer A. Habla. This had very wide and continuous open firing channels. Unlike zig-zag variants, there were no permanently built dividing walls. Thus, the energy savings were higher. However, the most important aspect of this kiln was that bricks could be loaded into the firing spaces through vehicular movement.
In Asian countries of India, Nepal, Bangladesh, and Pakistan the High Draught or HD Kiln is the most popular technology of Zig-Zag firing. Their difference with European variation is the absence of any dividing walls. In the European variety of HD kilns, the length of the kiln gallery is increased by zigzagging the chambers and the fire follows a zig-zag path instead of a straight path followed in BTK. In the early 1900s, these types of kilns were widely used in developed countries particularly in Germany and Australia. In Europe, the interior cross-section of the kiln used to be small in original zig-zag kilns (7.5 ft wide x 7.5 ft high) and the kiln used to have 16-20 chambers each 20-25 ft long. Fan draught was provided and the kiln operated on high draught at a very fast rate of fire travel (50-100 ft per day).
The High Draught or HD Kiln in India also follows the Zig-Zag firing concept. The Indian variation has several similarities with the Habla kiln. The kiln consists of a rectangular gallery which is divided into 24 chambers by providing temporary partition walls with green bricks. The wall of each chamber runs along the width of the gallery except one end, wherein a space of 60 to 65 cm is left for communication to the next chamber. Draught is created by an induced draught fan with a 20-35 HP motor for proper combustion of fuel. Depending on the design capacity of a kiln, a chamber can hold 7,500 to 15,000 bricks. Normally, two chambers are fired per day and an output of 15,000 to 30,000 bricks per day can be obtained. When brought to full firing, the kiln operates on a draught of 50 mm Hg.
High Draught kiln is a series of batch process kilns. Hoffmann kilns are the most common kiln used in the production of bricks and some other ceramic products. Patented by German Friedrich Hoffmann for brick making in 1860, it was later used for lime-burning and was known as the Hoffmann continuous kiln. The first Hoffmann kilns were in the form of a great circular ring chamber, with massive walls and a large chimney at the center, to which underground radial flues converged from the inside walls of each of the twelve chambers. The barrel-arched chambers (like a railway tunnel) have several small feed holes in the roof arches through which fine coal could be fed into spaces made among the bricks to be fired.
The Hoffmann kiln is a series of batch process kilns. Hoffmann kilns are the most common kiln used in the production of bricks and some other ceramic products. Patented by German Friedrich Hoffmann for brick making in 1858, it was later used for lime-burning and was known as the Hoffmann continuous kiln.
The first high draught kiln was in the form of a great circular ring chamber, with massive walls and a large chimney at the center, to which underground radial flues converged from the inside walls of each of the twelve chambers. The barrel-arched chambers (like a railway tunnel) have several small feed holes in the roof arches through which fine coal could be fed into spaces made among the bricks to be fired.
Around the outer wall of the kiln were the twelve openings for loading and unloading the individual firing chambers. These chambers were separated from each other by very large metal dampers that could be raised and lowered as the fire moved around the kiln from chamber to chamber.
Once the kiln is lit it is allowed to go out, and the sequence of operation is continuous. At regular intervals, the firing zone is moved forward and the corresponding changes made to the dampers between the chambers and into the chimney.
The chambers were loaded and unloaded move forward in the sequence, and this way heat is extracted from the cooling bricks and also from the hot combustion gases. As the fire passes round the kiln, the chambers in front of the actual firing zone are gradually warmed and the chambers behind cool off slowly.

Pak mail mixing machine

Pak mail mixing machine

we are supplying Pak mail mixing machine all over India.

Salient Features of Clay Mixing Machine:-

Boosting our revenue growth and future expansion, we are engaged as a manufacturer and exporter of Clay Mixing Machine in Sambhal Uttar Pradesh, India. A single and double screw clay mixing machine with the capacity of i.e. 60000 and 40000 bricks daily. Driven by tractor and JCB also required.

Brick TypeClay Bricks
MaterialMild Steel
Tractor RequiredReverse PTO Operated
Suitable HP Range45-50 Hp
Number of Tyres2

Product Description

Being a popular entity, we are providing an inclusive series of Simple Bricks Clay Mixing Machine. Our range is extensively employed by our customers owing to high strength and longer life service.

Product image

Pak mail mixing machine

Bricks Clay Mixing Machine

we are supplying the clay mixing machine all over india.we are manufacture clay mixer machine zig-zag kiln id fan and high draught kiln id fan -, coal mixture machine.

Rs 3.2 Lakh/Unit Get Latest Price

Model/Typesingle screw & double screw
Capacity50000-60000
Materialclay
Design TypeCustomized
ConditionNew
I Deal InNew 

Product Description Pak mail mixing machine

We are a supplier of Clay Mixing Machine Tractor Driven, Hydra Blower and Coal Crusher. The clay mixing machine is with the dual capacity 40000 bricks and 60000 bricks, the bricks kiln owner must be held JCB machine.
It can control gearbox also. 8 MM AND 4 mm plate used for its cover and a very superior production
This machine is a maintenance-free, probably rare chance to breakdown the only screw can be replaced after about two seasons
Double wheel and four truck tyre can be used in this and mostly used tyre is capable to run this
Weight of this machine about 2200 kg
And tyre set depend on the customer choose because tyre cost not included in this.

ZIG ZAG KILN ID FAN

Zig zag kiln id fan Backed by years of industry experience, we are engaged in offering a premium quality range Kiln ID Fans.

id fan used to reduce air pollutions and also increase the quality of bricks.

Product Specification

MaterialMild Steel
Surface FinishColor Coated
Outer Diameter6 feet
Motor Power Required15 hp
Power SourceElectric Motor, Diesel Engine
Minimum Order Quantity1 Piece

Zig zag Id Fan

We offering zig-zag kiln id fans Heavy Duty fans for high draft Bhatta in ss, FRB Coated big fans, High Draft Bhatta ID Fans, Brick Kiln high draft Fans from India.

Heavy Duty fan for Zig zag kiln id fans in ss

Rs 1.5 Lakhs / PieceGet Latest Price

Minimum Order Quantity: 1 Piece

TypeBrick kiln induced draft fan
Fan Speed180
MaterialStainless steel
Power15
Material Grade304 SS
Impeller Size6 fit
Outer Diameter6 feet
Power SourceElectric Motor, Diesel Engine

Advantage of zig-zag kiln id fans

1-zig zag id fan used to pass the air

2-zig zag id fans used to reduce air pollutions.

3-zig zag kiln id fans increase the quality of the first-class bricks.

4- zig zag Kiln technologies that are more energy-efficient and cause lesser pollution.One such technology named fixed chimney Zig – Zag kiln. The Zig-Zag kiln or the High Draught kiln is similar to firing technologies with essential variations in brick setting patterns where the kiln basic structure remains the same. The principle followed in this family of high draught kiln types is to prolong the travel path of the fire. This high thermal efficiency of the kiln reduces fuel consumption by 25%.

The earliest type of this technology was termed as Zig-Zag kiln and high draught kiln developed in the early 1900s.

Various reforms were also built which were relatively inexpensive variants adopted by small brick manufacturers. The design of this type of kiln ensures continuous operation of the kiln.

Bricks Clay Mixing Machine

we are supplying bricks clay mixing machine all over India.

Salient Features of Clay Mixing Machine:-

Boosting our revenue growth and future expansion, we are engaged as manufacturer and exporter of Clay Mixing Machine in Sambhal Uttar Pradesh, India. A single and double screw clay mixing machine with the capacity of i.e. 60000 and 40000 bricks daily. Driven by tractor and JCB also required.

Brick TypeClay Bricks
MaterialMild Steel
Tractor RequiredReverse PTO Operated
Suitable HP Range45-50 Hp
Number of Tyres2

Product Description

Being a popular entity, we are providing an inclusive series of Simple Bricks Clay Mixing Machine. Our range is extensively employed by our customers owing to high strength and longer life service.

Product image

bricks clay mixing machine

Bricks Clay Mixing Machine

we are supplying the clay mixing machine all over india.we are manufacture clay mixer machine zig-zag kiln id fan and high draught kiln id fan- coal mixture machine.

Rs 3.2 Lakh/Unit Get Latest Price

Model/Typesingle screw & double screw
Capacity50000-60000
Materialclay
Design TypeCustomized
ConditionNew
I Deal InNew 

Product Description bricks clay mixing machine

We are a supplier of Clay Mixing Machine Tractor Driven, Hydra Blower and Coal Crusher. The clay mixing machine is with the dual capacity 40000 bricks and 60000 bricks, the bricks kiln owner must be held JCB machine.
It can control gearbox also. 8 MM AND 4 mm plate used for its cover and a very superior production
This machine is a maintenance-free, probably rare chance to breakdown the only screw can be replaced after about two seasons
Double wheel and four truck tyre can be used in this and mostly used tyre is capable to run this
Weight of this machine about 2200 kg
And tyre set depend on the customer choose because tyre cost not included in this.

clay mixing machine

we are supplying clay mixing machine, coal mixer machine and all equipment of zig-zag Bhatta & high draught Bhatta. Pak mail mixer machine used to mix clay for making bricks.

We are a supplier of Pak mail mixer machine and Coal Crusher. The clay mixing machine is with the dual capacity 50000 bricks and 60000 bricks, the bricks kiln owner must be held JCB machine.
It can control gearbox also. 8 MM AND 4 mm plate used for its cover and very superior production.
This machine is a maintenance-free, probably rare chance to breakdown the only screw can be replaced after about two ya three seasons.


Double wheel and four truck tyre can be used in this and mostly used tyre is capable to run this Weight of this machine about 2200kg.
And tyre set depend on the customer choose because tyre cost not included in this.

Pak mail mixer machiner is used to mixing clay for making bricks. zig zag Bhatta technology and high draught Bhatta are used to making the best quality bricks. Natural zig-zag Bhatta is a new technology for making good quality.

High Draft Kiln ID Fans

high draft id fans Backed by years of industry experience, we are engaged in offering a premium quality range of High Draft Kiln ID Fans.

high draft id used to reduce air pollutions and also increase the quality of bricks.

Product Specification

MaterialMild Steel
Surface FinishColor Coated
Outer Diameter6 feet
Motor Power Required15 hp
Power SourceElectric Motor, Diesel Engine
Minimum Order Quantity1 Piece

High Draft Id Fans

We offer High draft Bhatta fans, Heavy Duty fan for high draft Bhatta in ss, FRB Coated big fan, High Draft Bhatta ID Fan, Zig-Zag Kiln ID Fan, and Brick Kiln high draft Fan from India.

source:-high draft id fans

Heavy Duty fan for high draft Bhatta in ss

Rs 1.7 Lakhs / PieceGet Latest Price

Minimum Order Quantity: 1 Piece

TypeBrick kiln induced draft fan
Fan Speed180
MaterialStainless steel
Power15
Material Grade304 SS
Impeller Size6 fit
Outer Diameter6 feet
Power SourceElectric Motor, Diesel Engine

Advantage of high draft kiln id fan

1-high draft id fan used to pass the air

2-high draft id fans used to reduce air pollutions.

3-high draft kiln id fan increases the quality of the first-class bricks.

4- High Draught Kiln technologies that are more energy-efficient and cause lesser pollution.One such technology named fixed chimney Zig – Zag kiln. The Zig-Zag kiln or the High Draught kiln is similar to firing technologies with essential variations in brick setting patterns where the kiln basic structure remains the same. The principle followed in this family of high draught kiln types is to prolong the travel path of the fire. This high thermal efficiency of the kiln reduces fuel consumption by 25%.

The earliest type of this technology was termed as Zig-Zag kiln and high draught kiln developed in the early 1900s.

Various reforms were also built which were relatively inexpensive variants adopted by small brick manufacturers. The design of this type of kiln ensures continuous operation of the kiln.

HYBRID HOFFMANN BHATTA

BHATTA CONSTRUCTION COMPANY

zig-zag Bhatta company is a national Bhatta construction,

which takes the form of two parallel tunnels built side by side, connected by curved tunnels at either end.

With such an arrangement.

Sixteen chambers are about the minimum for effective working; twenty-two chambers are preferable.

Although the burning time is only about three days or four days the bricks are in the kiln.

kiln for about ten days to allow for raising the temperature and,

after burning, subsequent lowering of the temperature before unloading the chambers. or

The Hybrid Hoffman kiln is no longer in use in India.

With such an arrangement. Sixteen chambers are about the minimum for effective working; twenty-two chambers are preferable.

the burning time is only about three days and bricks are in the kiln for about ten days to allow raising the temperature and after burning, subsequent lowering of the temperature.

Hoffmann kiln was superseded because it had such a large heat absorbing mass and

and the tapering firing chambers were small and unnecessarily complicated to load.

the very large damper between chambers was cumbersome and awkward to operate.

BHATTA CONSTRUCTION CHIMNEY

the above picture has shown the square chimney of zig-zag Bhatta.

Two firing zones running simultaneously are possible on the larger kilns. and in principle,

so they do not differ from the Hoffmann Kiln,

but with a high rate of fire travel, assisted by a strong fan draught system,

air passed through the id fan in high draught kiln process or zig-zag kiln process air passed through the chimney.

Advantages of Hoffmann Bhatta:

  • their use of waste heat the bricks Efficiency figures for Hoffmann kilns using coal as a fuel, in England and China and ranging from 1,800 at best to 2,350 kJ per kg fired brick at worst.
  • They have the capacity to fire very large quantities of bricks evenly and with minimal wastage.
  • The use of the down or cross draught system, with the fuel being burnt at regular intervals amongst the bricks, provides an even firing throughout the kiln.
  • The firing is controllable by the use of the dampers and careful stoking.
  • This is necessary when burning biomass fuels that have a higher mass and lower calorific value than other fuels, like coal or coke.
BHATTA CONSTRUCTION
zig-zag Bhatta filing process shown in the picture

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