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Henan Hongke Heavy Machinery Co., Ltd. delivered a 200,000 TPY zinc oxide rotary kiln line to a customer in Tianjin. Here’s the short version.
Who the Customer Is
A zinc recovery plant in Tianjin. They process zinc-bearing residues—steel mill dust, galvanizing ash—and recover zinc as zinc oxide for rubber, ceramics, and paint industries.
What Problem They Had
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 needed a line that could handle variable feed, hold stable reduction conditions, and deliver consistent ZnO at scale.
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
What We Supplied
A complete line around a Φ3.2×60m rotary kiln.
| Key Spec | Value |
|---|---|
| Diameter | 3.2 m |
| Length | 60 m |
| Application | Zinc oxide recovery |
| Capacity | 200,000 TPY |
| 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 Tianjin | Done |
| On-site installation | Done |
| Commissioning | Done |
| Handover | Done |
Commissioning Results
| Metric | Result |
|---|---|
| Zinc recovery | Meets target for feed content |
| ZnO grade | Consistent, meets spec |
| Reduction temperature | Stable across shifts |
| Ring formation | Reduced |
| Throughput | Meets 200,000 TPY design |
| Emissions | Within limits |
What the Customer Said
“The line runs steady. Recovery is consistent with our feed, ZnO grade meets our customer requirements. The engineering team was responsive. We’re satisfied.” — Production Manager, Tianjin
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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