Rotary Kiln Heat Transfer Chain

Min. Order: 100

Port: Qingdao, China

Production Capacity: 100000PCS/Month

Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

Multiple material options: Carbon Steels, Ferritic Material, Austenitic Steels, Austenitic Manganese Steels.

Application: Cement industry, metallurgical industry, lime calcining rotary kilns, solid and hazardous waste incineration kilns, chemical calcining kilns and other industries.

Package: Carton, Pallet, Wooden Box, or according to the customer's request.

Basic Info

The full name of the kiln chain is Rotary Kiln Heat Transfer Chain. It is a special high-temperature-resistant hanging link chain exclusively for rotary kilns. Mainly installed in the low-temperature feeding section of cement and lime rotary kilns, it improves heat efficiency through metal heat exchange, removes crusts on kiln walls, and breaks wet raw materials. It is an essential energy-saving and wear-resistant component for kiln furnaces.

Common Sizes (Wire Diameter)

Standard Series: 16 mm, 19 mm, 22 mm, 25 mm, 28 mm, 32 mm; Imperial: 5/8“, 7/8”, 1“, 1-1/4”. Standard pitch: 76 mm, 90 mm, 100 mm, 110 mm. Custom lengths and numbers of coils are available.

NOMINAL SIZE	PITCH	UNIT WEIGHT/LINK	WEIGHT/100FT
(in)	(in)	(Lbs)	(Lbs)
5/8	2-3/4	0.95	413
5/8	4	1.63	497
3/4	2-9/16	1.43	672
3/4	2-3/4	1.39	605
3/4	3	1.48	592
3/4	2-9/16	1.48	693
3/4	2-3/4	1.54	672
3/4	3	1.65	665
3/4	3-5/6	1.7	663
3/4	3-1/8	1.72	655
3/4	4	2.05	625
7/8	3	2.05	822
7/8	3-1/8	2.14	815
7/8	4	2.51	766
7/8	3	2.25	902
7/8	3-1/8	2.36	899
7/8	4	2.51	765
1	3	2.71	1088
1	3-1/8	2.85	1083
1	3-1/2	3.09	1057
1	4	3.35	1021
1-1/8	4	4.3	1310
1-3/16	4	5.03	1532
1-1/4	4	5.84	1781

Product Description

Kiln chain, also known as rotary kiln heat transfer chain, is a high-temperature resistant and wear-resistant core part installed inside the rotary kiln barrel. It rotates synchronously with the kiln body. Widely used in the feeding section of cement, lime, metallurgical, and chemical rotary kilns, it realizes heat exchange, material breaking, caking prevention, and crust cleaning. It effectively reduces flue gas temperature, saves energy, increases output, and protects refractory bricks, supporting 24-hour continuous operation under high-temperature, dusty, and fatigue working conditions.

Key Product Advantages

1. Significantly save energy and reduce consumption: greatly improve the heat exchange efficiency between flue gas and raw materials, and cut the coal consumption of kilns.

2. Self-cleaning to reduce shutdowns: chains rotate along with the kiln to continuously scrape the cylinder wall, inhibit crust adhesion on the kiln, and lower the frequency of manual kiln shutdown for cleaning.

3. Suitable for harsh high-temperature and corrosive working conditions: multiple grades of heat-resistant alloy materials are optional, with targeted solutions for kilns ranging from low temperatures up to 1200°C and high-sulfur corrosive environments.

4. High strength and fatigue resistance with low fracture risk: subjected to overall quenching and tempering plus weld reinforcement treatment, resistant to high-temperature creep, and unlikely to elongate or break during long-term operation.

Applications

1. Cement Industry (Largest Application Scenario): The feed preheating section of new dry-process cement rotary kilns, used for dispersing raw meal and recovering waste heat from flue gas.

2. Lime Calcining Rotary Kilns: Kilns for active lime and metallurgical lime, designed to process wet limestone materials and reduce heat consumption.

3. Metallurgical Industry: Rotary kilns for roasting bauxite, kaolin, and iron ore fines.

4. Solid Waste and Hazardous Waste Incineration Kilns: Rotary incinerators for hazardous waste and sludge, resistant to high-temperature and corrosive flue gas.

5. Chemical Calcining Kilns: Drying and calcining equipment for calcium carbonate, lithium carbonate, and powdered chemical raw materials.

Structural Composition

The complete kiln chain set features a simple structure and easy installation. It mainly consists of standard round link chains, hanging plates, connecting shackles, and anti-loose fasteners. Single-chain and double parallel-chain types are available.

Multiple chains are arranged and combined to form a chain curtain system, including dense curtains, sparse curtains, and freely suspended sections.
All chain links feature closed-loop structures with complete welds, securely fixed to the inner wall of the kiln, ensuring high stability and easy replacement.

1. Basic Unit: Ring Chain Link

Standard oval closed links. The steel wire is forged/rolled and then flash butt-welded. The welding seams receive integral heat treatment without stress notches.

2. Complete Suspension Assembly

(1)Single chain set: single continuous chain, customized in length according to the suspension height inside the kiln.

(2)Double chain set: two chains arranged in parallel, featuring higher load capacity and larger swing amplitude.

(3)Hanging plates / lifting lugs: matched steel suspension bases welded to the inner wall of the kiln barrel; the top ends of chains are sleeved and fixed on them.

(4)Complete chain curtain: multiple sets of single/double chains are densely arranged to form a Chain Curtain, classified into dense chain curtain, sparse chain curtain and free-hanging section.

3. Accessories

connecting shackles, fixing clamps, wear-resistant hanging plates, anti-falling retaining rings

Materials and Manufacturing Process Characteristics

(1) Material Specifications(Selecting a Model Based on Temperature Conditions)

Metallographic Structure	DIN Standard Material Number	DIN Standard	AISI Standard	Temp Range	Recommended Installation in the Kiln
Carbon Steels	1.0402	C 22	C1022	Up to 500°C	dust curtain plastic zone
	1.0501	C35	C1035
	1.6523	21NiCrMo2	8620
Ferritic Material	1.4713	X10CrAl7 (8F)	8F	500°C - 800°C	preheating zone
	1.4724	X10CrAl13 (9F)	9F	500°C - 900°C	preheating zone
	1.4742	X10CrAl18 (10F)	10F	800°C - 1100°C	hot zone
Austenitic Steels	1.4301	X5CrNi1810	304	500°C - 850°C	preheating zone
	1.4541	X6CrNiTi1810	321	500°C - 850°C	preheating zone
	1.4841	X15CrNiSi2520	310	800°C - 1200°C	hot zone
Austenitic Manganese Steels	1.4892	14872-92	85MA	500°C - 850°C	preheating zone
	1.4872-93	14872-93	105MA	750°C - 1050°C	hot zone
	1.4872-91	14872-91	115MA	850°C - 1200°C	hot zone

(2) Complete Production Process

Steel Rolling / Forged Round Steel Wire Rod → Ring Bending Forming
Automatic Flash Butt Welding with fully fused weld seams free of slag inclusions
Overall, Quenched and Tempered Heat Treatment (Quenching + High-temperature Tempering) to eliminate welding stress
Surface Treatment: Black Oxide Anti-rust Coating, Shot Blasting Polishing, High-temperature Oxidation Resistant Coating
Fixed-length Cutting, Lifting Lug Fitting, Packaging for Delivery

(3) Process Advantages

Forged base material with refined grains, resistant to high-temperature elongation and plastic deformation;
The entire process can be customized in terms of materials, size, and single-chain or double-chain structure.

Our team is ready to provide expert support, competitive pricing, and customized recommendations based on your specific requirements. Share your application details with us, and we'll help you select the right product for maximum performance and long-term reliability.

Email:info@starmachinechina.com

Phone/Whatsapp:+86-15163798011

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