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rotary lime kiln
preheater
custom rotary kiln
cooler for lime manufacturing plant
rotary kiln

Lime Rotary Kiln

As an experienced rotary kiln manufacturer, we offer rotary kilns for lime production lines. We can also design lime rotary kilns for lime calcination to meet your process need and materials, from testing to finished product.

Processing Capacity: 100-1200t/d

Air volume:

Filtration area:

Spiral diameter:

Trough Length:

Remove material:

Max. Feeding Size:10-50mm

Application Fields: A Lime rotary kiln is suitable for calcining limestone in metallurgy, the chemical industry, and the building material products industry.

Applied Materials:

Customized Service:Custom rotary kilns are available.

Phone / Whatsapp: +86 13598867851 Email: info@greatwallmac.com


Introduction of Rotary Kiln for Lime Calcination


A rotary kiln for lime production is a high-temperature lime calcination kiln for processing limestone and other solid materials. Custom rotary kilns are available. Our highly-engineered rotary kilns have earned a reputation for durability, efficiency, and longevity.

The rotary lime kiln is the main equipment for calcined active lime production.



Advantages & Benefits of Rotary Lime Kiln


The rotary lime kiln is a new type of special rotary kiln for active lime production. This type of rotary kiln can be equipped with a vertical preheater and vertical cooler to form an energy-saving rotary kiln calcination system.


Lime Rotary Kiln Production Line manufacturer



1. The vertical cooler at the kiln head can not only quench the high-temperature lime but also increase the activity of the product.
The activity of lime is 30ml higher than that of lime made by the traditional
shaft lime kiln.

2. The output of the rotary kiln is stable, and suitable for large, medium, and small active lime production lines.

3. The kiln body has a simple structure. Uniform heating, stable product quality, and the rate of light and burnt are low.

4. High raw material utilization rate, uniform good quality, and large production capacity.

5. Accommodates various fuel types.
The rotary kilns can use pulverized coal, coke oven gas, semi-coke furnace gas, converter gas, blast furnace gas, calcium carbide furnace gas, natural gas, diesel, heavy oil, liquefied petroleum gas, biomass fuel, etc. as fuels.


Main Structures of Lime Rotary Kiln


The Lime rotary kiln is mainly composed of a supporting device, transmission device, sealing device, kiln head guard plate, kiln body, kiln tail, and so on.


rotary kiln shell    rotary kiln support roller    rotary kiln tyre

   

Rotary Kiln Working Principle


1. After being crushed by the jaw crusher, the limestone is fed into the kiln through the chute at the upper kiln tail. Due to the inclination and slow rotation of the cylinder, the limestone rolls along the circumference and moves axially from the upper kiln tail to the lower kiln head;

2. At the kiln head (lower end), the fuel is sprayed into the kiln for combustion through the burner, and the heat is transferred to the limestone by radiation, convection, and conduction. After the limestone is calcined into quicklime during the movement, it is discharged from the kiln head.

3. The high-temperature smoke enters the dust removal system at the kiln tail.


rotary kiln design structures


How to Arrange and Install Lime Rotary Kiln?


When we install and arrange the lime rotary kiln, we need to pay attention to many aspects. First of all, we need to consider the site, the future maintenance, as well as the requirements for electricity and water.


How to arrange and install the rotary kiln


1. First of all, when we arrange the lime rotary kiln, we should pay attention to its center height. It should be determined according to the type and layout of the clinker cooler.

 

2. We will use the foundation pier during installation to make the lime rotary kiln stable. The layout of the lime rotary kiln foundation pier should meet the following requirements.

(1) The installation size of the lime rotary kiln should be based on the cold kiln;

(2) In addition, regarding the distance between foundation piers, the design should be based on the principle of thermal expansion and contraction;

(3) The calculation of axial thermal expansion of the kiln shell should be based on the center of the tyre with thrust roller near the transmission device, and expand to both ends;

(4) The slope of the foundation surface should be equal to the slope of the kiln shell, and the foundation hole should be perpendicular to the foundation surface.


3. If there are more than two limestone rotary kilns to be installed, the center distance between the two kilns should comply with the following principles:

(1) Meet the layout requirements of kiln head and kiln tail equipment;

(2) To facilitate equipment operation and maintenance;

(3) Reasonable location of the central control room.


Technical Data of Lime Rotary Kiln Plant


Capacity (t/d)

100

150

200

250

300

350

400

500

600

800

1000

1200

Main Equipment

Models & Specifications

Vertical Preheater

PHT03

PHT04

PHT06

PHT06

PHT08

PHT08

PHT10

PHT12

PHT12

PHT14

PHT18

PHT20

Rotary Kiln

Φ2.2*30m

φ2.5*40m

φ2.8*43m

φ3.0*48m

φ3.2*50m

φ3.3*52m

φ3.6*55m

φ3.8*58m

φ4.0*60m

φ4.3*65m

φ4.9*70m

φ5.1*72m

Vertical Cooler

VC32

VC36

VC44

VC56

VC80

VC112

Calcination temperature

1100±50 ℃

Energy consumption Index

1200±100 kCal/kg

≤1150 kCal/kg

≤1100 kCal/kg

Power consumption index

40±5 kW·h/t

Limestone: Lime

1.7~1.78:1

Light Over Burnt Rate

≤5 %

Lime activity

≥340 ml depends on the composition of the limestone

 Lime discharge temperature

60℃ higher than the Ambient Temperature

Limestone feed size

10~50mm

Emission concentration

≤10 mg/Nm3

Working days per year

≥340 days

Maintenance cycle/Year

1~3 times/year

Labor/Shift

2~3 person/shift

Fuels type

Pulverized coal, coke oven gas, semi-coke furnace gas, converter gas, blast furnace gas, calcium carbide furnace gas, natural gas, diesel, heavy oil, liquefied petroleum gas, biomass fuel


FAQ


Q1. What are some general maintenance tips for lime rotary kilns?

A1. Regularly inspect the kiln for signs of wear and tear. Check for any corrosion or damage to the shell and lining, and replace or repair any damaged components. Make sure the seals and bearings are in good condition and that the kiln is properly lubricated. Clean the kiln regularly to prevent the build-up of deposits. Monitor the temperature of the kiln closely and keep the kiln at a consistent temperature.

 

Q2. How often should a lime rotary kiln be serviced?

A2. The frequency of service depends on the usage and environmental conditions. As a general rule of thumb, the kiln should be serviced at least once a year to ensure optimal performance and safety.

 

Q3. What should be done during a rotary kiln service?

A3. During a service, the kiln should be thoroughly inspected for any signs of damage and wear. The seals, bearings, and other components should be checked and replaced as necessary. The kiln should be cleaned to remove any build-up of deposits. The temperature of the kiln should also be monitored and adjusted as needed.

 

Q4. What are some common issues with rotary lime kilns?

A4. Common issues include corrosion and damage to the shell and lining, wear and tear of seals and bearings, and build-up of deposits.

 

Q5. How can I extend the life of my rotary kiln?

A5. Regular maintenance and inspection are essential to extending the life of a Lime Rotary Kiln. Make sure the seals and bearings are in good condition and that the kiln is properly lubricated. Clean the kiln regularly to prevent the build-up of deposits. Monitor the temperature of the kiln closely and keep the kiln at a consistent temperature.


Q6. What materials can be processed by rotary kiln?

 

Common materials which can be processed in a rotary kiln include alumina, bauxite, cement clinker, limestone, and charcoal. Additionally, a variety of specialty materials such as copper ore, zinc ore, nickel ore, magnetite ore, titanium oxide, graphite, iron ore, and phosphate rock can also be processed in a rotary kiln.


Q7. How to Inspect and Maintain Rotary Kiln Shell?

Please refer to this article: KILN SHELL INSPECTION AND MAINTENANCE.


Fire Inspection Methods for Rotary Kilns



The Market Situation and Forecast of Calcined Limestone 


 

calcined limestone lumps



Calcined limestone is widely used in the production of cement, steel, and other industries, and its demand is increasing. The market for calcined limestone is highly dependent on the global economy, as the product is used in a variety of industries.

 

In the short term, the market for calcined limestone is expected to remain steady, with some minor fluctuations, due to the current global economic uncertainty. However, the long-term forecast is optimistic, as the demand for calcined limestone is expected to increase as the global economy recovers.

 

In the long term, the growth of the calcined limestone market is expected to be driven by the increasing demand from the construction industry, particularly in emerging economies. The increasing demand for cement and steel is likely to drive the demand for calcined limestone, as these materials require calcined limestone in their production process. Furthermore, increasing the use of calcined limestone for water treatment and agriculture applications is expected to drive the market in the long term.

 

The pricing of calcined limestone is expected to remain relatively stable over the next few years, as the supply of calcined limestone is expected to remain steady. However, due to increasing demand, the prices may increase in the long term.

 

Overall, the market for calcined limestone is expected to remain steady in the short term, with some minor fluctuations, and is expected to grow in the long term, driven by increasing demand from the construction industry.



Rotary Lime Kiln.pdf


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