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Henan Hongke Heavy Machinery Co., Ltd. delivered a Φ 2.5×45m zinc oxide rotary kiln line in Kaifeng, Henan. Here's the short version.
Who the Customer Is
A zinc recovery plant in Kaifeng, Henan. They process zinc-bearing residues—steel mill dust, galvanizing waste, similar byproducts—and recover zinc as zinc oxide.
What Problem They Had
Their operation had issues:
Zinc recovery was inconsistent—value lost in slag
Reduction temperature was unstable—ZnO grade varied
Ring formation caused unplanned stops
Fuel consumption was high
Off-gas treatment was marginal
They wanted a line that could handle variable feed, hold stable reduction conditions, and deliver consistent ZnO.
Why They Chose Us
We talked process, not just price – reduction temperature, atmosphere, gas velocity, fume collection
We designed for variable feed – industrial residues, not uniform ore
We took full scope – feed prep, kiln, burner, oxidation chamber, cooling, bag filter, slag quench, PLC
They inspected our factory before signing
We stay available after handover – process support, spare parts
What We Supplied
A complete line around a Φ 2.5×45m rotary kiln.
| Key Spec | Value |
|---|---|
| Diameter | 2.5 m |
| Length | 45 m |
| Application | Zinc oxide recovery |
| Temp | Up to 1,100–1,200°C (reduction zone) |
| Drive | Heavy-duty gear with main + auxiliary motor |
Included: feed preparation (crushing, mixing, pelletizing), rotary kiln, multi-channel burner, oxidation settling chamber, cooling system, pulse-jet bag filter, slag quench system, PLC controls.
Delivery Timeline
| Stage | Status |
|---|---|
| Process design | Done |
| Manufacturing | Done |
| Factory testing | Done |
| Shipment to Kaifeng | Done |
| On-site installation | Done |
| Commissioning | Done |
| Handover | Done |
Commissioning Results
| Metric | Result |
|---|---|
| Zinc recovery | Improved vs. previous operation |
| ZnO grade | Consistent, meets spec |
| Reduction temperature | Stable across shifts |
| Ring formation | Reduced |
| Throughput | Meets design capacity |
| Emissions | Within limits |
What the Customer Said
"The kiln runs steady. Recovery is better than before, ZnO grade is consistent. The engineering team was responsive during installation and commissioning. We're satisfied." — Production Manager, Kaifeng
What It Means for Them
More saleable ZnO per ton of feed
Stable grade for offtake contracts
Lower fuel cost per ton
Fewer unplanned stops
Emissions in compliance
One supplier for the whole line
Long-Term Partnership
We don't stop at handover. We provide technical support, spare parts, maintenance guidance, and support for future expansion.
About Us
Henan Hongke Heavy Machinery Co., Ltd. has been making rotary kilns, rotary dryers, ball mills, and crushers since 2006. We do one-stop solutions—complete systems, not just machines.
Processing Zinc-Bearing Residues?
Tell us your feed material, zinc content, and target output. We'll propose a kiln configuration that fits.
Contact Henan Hongke Heavy Machinery Co., Ltd.
Henan Hongke Heavy Machinery Co., Ltd.
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