WhatsApp：+86 155 1698 1316
WeChat：+86 155 1698 1316
Email：sales@rotarykilnchina.com
Henan Hongke Heavy Machinery Co., Ltd. recently delivered a Φ2.2×42m rotary kiln for lime production to a customer in Mongolia. The system is designed for 50 tons per day. Here's the story.
The Situation: Mongolia Needs More Lime
Mongolia's mining and construction industries are growing fast. Copper and gold mines like Oyu Tolgoi and Erdenet need lime for processing. Builders need it for materials. But local production is limited—most lime has to be imported, which costs a lot and takes time.
Our customer saw the opportunity. They wanted a reliable lime kiln that could produce high-quality product locally and cut out the import costs.
What They Needed
| Requirement | Why |
|---|---|
| 50 tons per day | Matches local market demand |
| Consistent quality | Must meet metallurgical specs |
| Fuel flexibility | Coal or gas—whatever's available |
| Low operating cost | Preheater to save fuel |
| Clean operation | Must meet environmental standards |
What We Built
We supplied a complete lime production system built around a Φ2.2×42m rotary kiln.
| Key Spec | Value |
|---|---|
| Diameter | 2.2 m |
| Length | 42 m |
| Capacity | 50 tons/day |
| Temperature | 950–1,250°C |
| Drive | Heavy-duty gear + backup motor |
The full system includes:
Vertical preheater – catches waste heat, preheats stone to 900°C, cuts fuel use by ~30%
Φ2.2×42m kiln – main calcination unit with high-alumina refractory lining
Vertical cooler – quenches lime fast, preserves reactivity, recovers heat for the kiln
Dust collector – cyclone + bag filter keeps emissions low
PLC control – monitors temps, feed rate, and speed automatically
How the Process Works
| Stage | What Happens |
|---|---|
| Preheat | Limestone heated to ~900°C using waste gas |
| Calcination | 1,100–1,250°C in the kiln – limestone turns to lime |
| Cooling | Lime quenched from 1,100°C to <100°C – locks in reactivity |
| Dust control | Gases cleaned before they leave the stack |
Why This Kiln Works for Mongolia
| Feature | Why It's Good |
|---|---|
| Fuel-flexible burner | Can run on coal or gas—use what's cheaper |
| Preheater | Burns less fuel—saves money every day |
| Fast cooler | Keeps lime reactive—higher value for customers |
| Good seals | Keeps heat in, dust out |
| Simple operation | PLC controls—doesn't need a big crew |
What the Customer Gets
Once running, this plant will deliver:
50 tons of lime per day – consistent, high-quality product
Lower fuel costs – preheater saves ~30% on energy
No import delays – local production, local supply
Clean operation – meets Mongolian environmental rules
Who We Are
Henan Hongke Heavy Machinery Co., Ltd. has been building kilns, dryers, ball mills, and crushers since 2006. We design, manufacture, and support equipment for customers worldwide—from sizing to installation to after-sales.
Bottom Line
This Φ2.2×42m kiln is a simple, proven solution for 50 tons of lime per day. It saves fuel, keeps quality high, and helps our customer compete in a growing market.
Need a lime kiln? Talk to us.
Contact Henan Hongke Heavy Machinery Co., Ltd. – we deliver equipment that works.
Henan Hongke Heavy Machinery Co., Ltd.
Rotary Kilns | Dryers | Ball Mills | Crushers – Built for Real Work
