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Henan Hongke Heavy Machinery Co., Ltd. recently commissioned a molybdenum ore rotary kiln line in Weishi County, Kaifeng, Henan. The system has been running smoothly, and the customer is happy. Here's the story.
What the Customer Needed
This customer processes molybdenum concentrate. To turn it into a saleable product, they have to roast it—drive off sulfur and convert the material to molybdenum oxide. It's a critical step, and it has to be done right.
They needed:
Consistent roasting – complete sulfur removal, every batch
24/7 operation to meet demand
Dust and SO₂ control that meets environmental rules
Brand-new equipment – no used machines
A complete line, not just a kiln
They also wanted a partner they could count on for the long haul.
Why They Chose Us
They looked at several suppliers. Here's why they picked us:
We understand roasting – we've designed kilns for molybdenum and other minerals before
We built it for their material – sized for their feed, their moisture, their target output
We supplied the whole package – kiln, burner, dust collection, controls, everything
We don't disappear – spare parts, technical help, maintenance advice
What We Supplied
A complete roasting line built around a rotary kiln.
| Key Spec | Value |
|---|---|
| Application | Molybdenum concentrate roasting |
| Temp | Up to 1,000°C |
| Inclination | 3–4% |
| Drive | Heavy-duty gear with backup |
| Seals | Labyrinth with air purge |
The system includes:
Controlled feed system
Rotary kiln with refractory lining
Multi-fuel burner (gas or coal)
Dust collector (cyclone + bag filter)
Discharge and cooling system
PLC controls with temperature monitoring
How It Works – Simple and Effective
| Stage | What Happens |
|---|---|
| Feed | Molybdenum concentrate enters through a controlled feeder |
| Heating | Material heats up as it moves through the kiln |
| Roasting | At 500–650°C, MoS₂ reacts with oxygen → MoO₃ + SO₂ |
| Discharge | Roasted product exits at the lower end |
| Gas treatment | SO₂ and dust are captured before release |
The drum rotates slowly. Internal flights lift and shower the material through the hot gas stream. Uniform contact, consistent roasting, no hot spots.
The Results – Running Well
The system has been running since commissioning. Here's how it's doing:
| What We Checked | How It Performed |
|---|---|
| Operational stability | Continuous, minimal interruptions |
| Product quality | Consistent, complete sulfur removal |
| Throughput | Meets production targets |
| Emissions | Within regulatory limits |
| Customer feedback | Positive – system works as expected |
What the Customer Says
"The kiln has been running smoothly since startup. It handles our molybdenum concentrate without the issues we had before. Product quality is consistent, emissions are under control, and we're meeting our targets. Good equipment, good support." — Operations Manager, Weishi
What the Customer Got
| Benefit | Why It Matters |
|---|---|
| Consistent roasting quality | Uniform product, batch after batch |
| Reliable operation | Built for continuous production, less downtime |
| Environmental compliance | Dust and SO₂ under control |
| Lower operating costs | Optimized fuel use, less maintenance |
| Full support | Commissioning, spare parts, technical help |
| Brand-new reliability | No hidden wear, full service life ahead |
Building Long-Term Partnerships
A successful commissioning is just the start. Our commitment to the Weishi customer continues:
Technical support – process advice and troubleshooting
Spare parts – critical components ready to ship
Maintenance guidance – help with preventive maintenance planning
Future cooperation – ready to support growth as their business expands
We're not just a supplier. We're a partner.
About Us – Short Version
Henan Hongke Heavy Machinery Co., Ltd. has been making rotary kilns, rotary dryers, ball mills, and crushers since 2006. We focus on one-stop solutions—complete systems, not just individual machines.
Let's Talk About Your Roasting Project
Need a kiln for molybdenum, other minerals, or any thermal process? We can help.
Contact Henan Hongke Heavy Machinery Co., Ltd. – we'll listen and deliver equipment that works.
Henan Hongke Heavy Machinery Co., Ltd.
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