✔ Advanced Lime Shaft Kiln - Sustainable & High-Efficiency Solution
Our vertical lime shaft kiln is a modern steel-structured furnace engineered for high-efficiency lime calcination, employing counter-current heat exchange technology (material descends while hot gases ascend) to achieve superior thermal performance compared to traditional rotary kilns. This eco-conscious design repurposes waste gases—such as converter gas, blast furnace gas, and carbide tail gas—as fuel while minimizing emissions through clean combustion technology. With a daily capacity ranging from 50 to 400 tons (customizable), the kiln delivers operational excellence via automated control systems that ensure precision, stability, and reduced labor costs, alongside 20–30% lower fuel consumption than conventional kilns. Economically advantageous, it significantly cuts production costs by utilizing low-cost or waste-derived fuels and offers an extended service life thanks to its robust steel construction.
✔Widely Used in Multiple Industries
Our lime shaft kilns are extensively applied in:
1. Metallurgy – Steelmaking, ironmaking, and non-ferrous metal processing
2. Building Materials – Cement, glass, and lime-based products
3. Chemical Industry – Calcium carbide and nano calcium carbonate production
4. Construction – Aerated concrete blocks and lightweight materials
5. Food Processing – Sugar purification and water treatment
Designed for cross-industry adaptability, our kilns deliver high-purity lime to meet diverse industrial demands.
✔Our Advantages
1. The kiln has great flexibility in operation, and can be adjusted from 60-100% to achieve stable production;
2. Applicable fuels are solid fuels such as coke and anthracite;
3. Low heat consumption and reasonable use of heat energy. The secondary high-temperature air preheated by cooling lime directly participates in combustion;
4. The vertical kiln adopts micro-negative pressure operation (kiln top) to make the airflow in the kiln evenly distributed, which is conducive to the calcination of lime.
Capacity (t/d) | 50 | 100 | 150 | 200 | 300 | 400 |
---|---|---|---|---|---|---|
Main Equipment | Main supporting equipment model and technical & economic index | |||||
Distributor | BL-1 | BL-2 | BL-2 | BL-3 | BL-3 | BL-4V |
Vertical Kiln | 60m³ | 150m³ | 200m³ | 250m³ | 400m³ | 500m³ |
Kiln chamber section form | Round | |||||
Lime discharging device | WF-1 | WF-2 | WF-2 | WF-3 | WF-4 | WF-5 |
Calcination temp./℃ | 1100±50 | |||||
Energy consumption index/(kCal/kg lime) | 950±50 | |||||
Power consumption index/(kW·h/t lime) | 25±5 | |||||
Limestone: lime | 1.6~1.75:1 | |||||
Light and over burnt rate /% | ≤13 | |||||
Lime activity /ml | 220~280 (depending on the composition of limestone) | |||||
Lime discharging temperature / ℃ | Ambient temperature +60 | |||||
Limestone feeding size /mm | 30~80/80~120 | |||||
Emission concentration/(mg/Nm3) | ≤30 | |||||
Annual working days/days | ≥340 | |||||
Overhaul cycle/year | 3~5 | |||||
Labor/ shift | 2 | |||||
Applicable fuels | Lumpy anthracite, Lumpy coke, Lumpy petroleum coke, Lumpy biomass fuel |