Henan Hongke Heavy Machinery Co., Ltd. is pleased to announce the successful completion of a Φ 2.8×30m rotary kiln production line for iron powder calcination at a customer site in Qingdao, Shandong Province, China. This is a brand-new installation—not a refurbishment, not an upgrade of old equipment—delivered as a complete, engineered solution.
Project Background: Iron Powder Calcination in Qingdao
Qingdao, a major industrial port city in Shandong Province, hosts a strong metallurgical and chemical processing sector. Iron powder is a critical material used in powder metallurgy, magnetic materials, welding electrodes, and chemical catalysts. Its production often involves calcination—a high-temperature thermal treatment that removes impurities, controls oxidation state, and develops the required physical properties.
Our customer in Qingdao operates in the metal powder sector. They needed a new calcination line to expand their production capacity and improve product consistency. Their existing equipment was outdated and could not meet the quality or throughput requirements of their growing customer base.
They came to us with clear requirements:
Consistent product quality – stable chemical and physical properties
Reliable continuous operation – 24/7 production
Precise temperature control – critical for iron powder properties
Environmental compliance – dust and emission control
Brand-new equipment – no used or refurbished machinery
Complete line – not just a kiln, but the full production system
Why This Customer Chose Henan Hongke Machinery
After evaluating several suppliers, the customer selected Henan Hongke Heavy Machinery for several compelling reasons:
1. Experience with Metal Powder Processing
Iron powder calcination requires precise temperature profiles and atmosphere control. We demonstrated our understanding of the process and our ability to design a kiln that meets these requirements.
2. Custom-Engineered for Their Material
We don't sell generic kilns. Our engineering team designed this Φ 2.8×30m kiln around the customer's specific iron powder characteristics—particle size, moisture content, and target throughput.
3. Complete, Brand-New System
The customer wanted a purpose-built system, not a refurbished unit or a repurposed cement kiln. We delivered a complete production line, built from the ground up.
4. One-Stop Solution
We supplied the full scope—feed system, kiln, burner, dust collection, discharge, and controls. The customer didn't have to coordinate multiple suppliers.
5. Long-Term Support
The customer wanted a partner who would be there after installation. We provide spare parts, technical advice, and ongoing service.
What We Supplied
A complete iron powder calcination line built around a Φ 2.8×30m rotary kiln.
| Key Specification | Value |
|---|---|
| Kiln diameter | 2.8 meters |
| Kiln length | 30 meters |
| Application | Iron powder calcination |
| Operating temperature | Up to 1,100°C (adjustable by zone) |
| Kiln inclination | 3–4% |
| Rotation speed | Variable frequency drive |
| Drive system | Heavy-duty gear drive with auxiliary motor |
| Sealing system | Labyrinth seals with air purge |
The system includes:
Controlled feed system for consistent material entry
Φ 2.8×30m rotary kiln with high-alumina refractory lining
Multi-fuel burner (gas or pulverized coal)
Dust collection system (cyclone + bag filter)
Discharge and cooling system
PLC-based controls with temperature monitoring and data logging
How the Iron Powder Calcination Process Works
| Stage | What Happens |
|---|---|
| Feed | Iron powder enters through a controlled feed system |
| Heating | Material is gradually heated as it moves through the kiln |
| Calcination | At high temperature, impurities are removed and physical properties develop |
| Discharge | Calcined product exits at the lower end |
| Gas treatment | Exhaust gases pass through dust collection before release |
The rotary kiln operates on a simple principle: the drum rotates slowly, and internal lifting flights shower the material through the hot gas stream. This ensures uniform contact between the iron powder and the heat source—consistent calcination without hot spots.
Installation Results: Completed and Ready
The installation has been successfully completed. Key outcomes:
| Performance Metric | Result |
|---|---|
| Installation completion | On schedule |
| Mechanical alignment | Verified to specification |
| No-load testing | Smooth operation, normal bearing temperatures |
| System integration | All components connected and tested |
| Operational readiness | Ready for commissioning and production |
The system is now ready for trial operation and full production.
What This Means for Our Customer
| Benefit | Value |
|---|---|
| Consistent product quality | Stable chemical and physical properties |
| Reliable operation | Built for continuous production with minimal downtime |
| Precise temperature control | Multi-zone monitoring for optimal calcination |
| Environmental compliance | Dust emissions controlled |
| Lower operating costs | Optimized fuel consumption and maintenance |
| Full support | Installation, commissioning, spare parts, technical assistance |
| Brand-new reliability | No hidden wear, full service life ahead |
Building Long-Term Partnerships
At Henan Hongke Heavy Machinery, we view a successful installation as the start of a long-term relationship. Our commitment to the Qingdao customer includes:
Technical support – process optimization and troubleshooting
Spare parts availability – critical components stocked for quick delivery
Maintenance guidance – support for preventive maintenance planning
Future cooperation – ready to assist with capacity expansion or process changes
We're not just a supplier. We're a partner.
About Henan Hongke Heavy Machinery Co., Ltd.
Henan Hongke Heavy Machinery Co., Ltd. (Henan Hongke Machinery) has been designing and manufacturing industrial processing equipment since 2006. Our product portfolio includes:
Rotary Kilns – for iron powder, lime, dolomite, metallurgy, and mineral calcination
Rotary Dryers – for sludge, biomass, sand, and industrial materials
Ball Mills – for ore, slag, cement, and chemical grinding
Crushers – for primary and secondary size reduction
We focus on one-stop solutions for mining and materials processing—complete systems, not just individual machines. From engineering to installation and after-sales service, we stay with our customers every step of the way.
Let's Talk About Your Calcination Project
Whether you need a rotary kiln for iron powder, other minerals, or any thermal processing application, we're here to help.
Contact Henan Hongke Heavy Machinery Co., Ltd. – we'll listen to your needs and deliver equipment that works.
Henan Hongke Heavy Machinery Co., Ltd.
Rotary Kilns | Rotary Dryers | Ball Mills | Crushers – Built for Reliability, Backed by Service