Gas External Heating Calcining Rotary Kiln

Introduction of Gas External Heating Calcining Rotary Kiln

A rotary kiln is a kind of industrial equipment used for material heating and processing, which is widely used in cement, metallurgy, chemical industry, etc. Gas External Heating Calcining Rotary Kiln refers to various parts and components which are necessary for maintaining and repairing the normal operation of the rotary kiln, such as cylinder, baffle wheel, pallet, sealing device and so on.

Features and advantages of Gas External Heating Calcining Rotary Kiln

High-temperature resistance: Due to the extremely high temperature of the working environment of the rotary kiln, the spare parts are usually made of refractory materials or special alloys to ensure that they can work stably under high temperatures.

High abrasion resistance: Long time material friction and chemical erosion require spare parts to have excellent abrasion resistance to prolong service life.

High structural strength: in order to withstand heavy loads and the pressure of continuous operation, the design of spare parts will place special emphasis on structural strength and reliability.

Easy to install and maintain: Considering the need for frequent replacement, many spare parts are designed to be simpler and easier for quick installation and maintenance.

Strong adaptability: different industries have different needs for rotary kilns, so spare parts need to have good versatility and adaptability to meet diverse application conditions.

(Gas External Heating Calcining Rotary Kiln)

Specifications of Gas External Heating Calcining Rotary Kiln

This gas external heating calcining rotary kiln handles high-temperature thermal processing. It heats materials indirectly using external gas burners. This design offers precise temperature control and energy efficiency. The kiln suits calcining applications needing consistent heat transfer. The cylinder rotates slowly to move material through the heating zone. This ensures uniform exposure to heat. It processes various minerals and industrial powders.

The kiln shell is constructed from high-grade, heat-resistant alloy steel. This material withstands prolonged exposure to extreme temperatures. The internal refractory lining protects the shell. It minimizes heat loss and endures harsh chemical conditions. The lining material is chosen based on the specific processed material. Common choices include high-alumina or fireclay bricks.

Typical cylinder diameters range from 1.5 meters to 4 meters. Lengths vary significantly, often between 15 meters and 60 meters. Larger sizes handle higher production volumes. The rotation speed is adjustable. Speeds usually fall between 0.5 and 3.5 RPM. This controls the material residence time inside the kiln. The slope angle is also adjustable. Angles typically range from 1 to 5 degrees. This slope aids material movement along the cylinder.

Operating temperatures reach up to 1300°C. Some specialized versions may operate even hotter. Gas burners supply the external heat source. Natural gas or propane are common fuels. The kiln features robust support rollers and a sturdy drive system. An electric motor powers the rotation. Gears or chains transmit the power reliably. Advanced models include automated control systems. These systems manage temperature, rotation speed, and gas flow. They optimize performance and ensure safety. Instrumentation monitors key parameters continuously. This includes temperature profiles and pressure readings. Operators get real-time data for process adjustments.

(Gas External Heating Calcining Rotary Kiln)

Applications of Gas External Heating Calcining Rotary Kiln

Gas external heating calcining rotary kilns are vital tools in many industries. Calcination means heating materials to very high temperatures. This process drives off volatile components. It causes chemical decomposition. It changes the physical properties of the material. These kilns are large, long, rotating cylinders. They are slightly inclined. The material slowly travels down the length. External gas burners provide intense heat. The heat transfers through the kiln shell. This heats the material inside. This design allows precise temperature control. It creates an efficient heating environment.

One major application is cement production. The kiln heats limestone and clay. This forms clinker. Clinker is the key ingredient in cement. The high temperatures cause chemical reactions. These reactions form the necessary compounds. The rotary action ensures even mixing. It ensures consistent heating. This results in a uniform product.

Lime production is another key use. Limestone enters the kiln. The intense heat drives off carbon dioxide. This leaves behind quicklime. Quicklime has many uses. It is used in steelmaking. It is used in chemical production. It is used in environmental applications. The gas-fired kiln provides clean, controllable heat. This is important for lime quality.

Processing alumina from bauxite relies on these kilns. The kiln removes chemically bound water. It prepares the alumina for further refining. This step is essential for aluminum production. The rotary design handles the material well. The external heating avoids contamination.

Treating certain wastes uses these kilns too. They destroy hazardous components at high heat. They stabilize materials for safe disposal. The enclosed design prevents emissions. The gas burners offer reliable operation.

These kilns handle tough materials. They withstand harsh conditions. They deliver consistent performance. Industries depend on them for quality products.

Company Introduction

Established in 2001, plant Machinery Equipment Co.,ltd. focus on metal research and mining machinery spare parts. 2 factories over an area of 13,300 square meters, based on 100+ sets of equipment, our production capacity reaches 12000 Tons/Year. has passed ISO 9001 quality managment system certification in 2008.

Our mainly products are dragline excavator spare parts,rotary kiln spare parts, large modulus gear (gear shaft), gearbox ect. 40+ patents with over 45 years experience to help focus on improve the service life of spare parts. We belive that more than 80% reason of mechanical parts’ working life depends on hot processing (steel making/forging/casting/welding/heat treatment). Eight material engineers will control the quality from the original resource.

If you are interested, please feel free to contact us.

5 FAQs of Gas External Heating Calcining Rotary Kiln

Gas External Heating Calcining Rotary Kiln FAQs

1. What is this kiln?
This is a large, rotating drum. It heats materials using gas burners placed outside the drum. The drum rotates. This keeps the material moving. The heat causes calcination. Calcination changes the material chemically. It removes water or carbon dioxide.

2. Why use external gas heating?
External heating offers precise temperature control. You adjust the burners easily. This control is crucial for consistent product quality. It also helps save fuel. The heat transfers efficiently to the material inside the drum.

3. Is it safe?
Yes, safety is a priority. External heating keeps the hot combustion gases separate. These gases stay outside the drum. They don’t mix with the material being processed. This separation reduces fire risk. It also prevents contamination of your product.

4. What about emissions?
Modern designs focus on lower emissions. External burners can be very efficient. Efficient burning means less wasted fuel. It also means fewer harmful exhaust gases. Systems often include scrubbers. Scrubbers clean the exhaust before release.

5. Can it handle different materials?
Yes, the kiln is versatile. You can process various minerals and chemicals. Common materials include limestone and gypsum. The temperature and rotation speed are adjustable. Adjusting these allows processing different stuff. The kiln design can be customized. Customization meets specific production needs.

(Gas External Heating Calcining Rotary Kiln)