Aligned with the development needs of Zimbabwe’s local manufacturing sector, ZOZEN Boiler has successfully supplied an SZL 12 tph Chain Grate Coal-Fired Steam Boiler to the Baobab paper mill, supporting the stable operation of its wastepaper recycling and packaging paper production lines. The mill focuses on the recycling and reuse of wastepaper to produce paper for corrugated board and packaging products, serving the core demand of Zimbabwe’s packaging and logistics industries.

The SZL 12 tph Chain Grate Coal-Fired Steam Boiler is a horizontal double-drum water-tube boiler specifically developed for medium-capacity industrial steam applications. Its structural design and operating characteristics make it well suited to paper mills, which require uninterrupted steam output over long production cycles.

Key technical features include:

Thermal capacity：6-35 t/h

Working pressure：1-2.5 MPa

Outlet temperature：184-350 ℃

Thermal Efficiency：>81%

Available fuel：Bituminous coal, lean coal, anthracite

 ZOZEN SZL 12 tph Chain Grate Coal-Fired Steam Boiler

The chain grate combustion system ensures uniform fuel feeding and stable combustion conditions, while the independent air chambers allow more accurate air distribution across different combustion zones. This design promotes more complete coal combustion, reduces unburned carbon losses, and improves overall boiler efficiency. As a result, the SZL 12 tph Chain Grate Coal-Fired Steam Boiler can operate reliably under long-term, high-load conditions common in the paper industry.

By adopting the SZL 12 tph Chain Grate Coal-Fired Steam Boiler, the Baobab paper mill secures a dependable steam source that supports stable production, consistent product quality, and improved overall operational efficiency.

ZOZEN Boiler: strong manufacturing capability and global recognition

As a professional industrial boiler manufacturer deeply engaged in overseas markets, ZOZEN Boiler has built a strong reputation through decades of technical accumulation and project experience. The company holds key manufacturing qualifications, including China’s A-grade boiler manufacturing license and D1/D2 pressure vessel manufacturing licenses, and has passed ISO 9001 quality management system certification. ZOZEN is also certified with ASME “S” and “U” stamps, demonstrating its compliance with internationally recognized standards.

In terms of technical strength, ZOZEN has established a dedicated R&D system and long-term cooperation with leading universities and research institutes. This enables continuous optimization of boiler structures, combustion systems, and thermal efficiency. Its modern production base is equipped with advanced welding, machining, and non-destructive testing facilities, ensuring stable product quality and manufacturing consistency.

ZOZEN’s products—including coal-fired, gas-fired, biomass-fired steam boilers, and thermal oil heaters—have been exported to South Africa and many other African countries. This extensive export experience allows ZOZEN to fully understand local fuel characteristics, operating habits, and environmental conditions, enabling it to deliver solutions that are both reliable and practical for African industries.

Conclusion and call to action

The successful application of the SZL 12 tph Chain Grate Coal-Fired Steam Boiler at Zimbabwe’s Baobab paper mill once again demonstrates ZOZEN Boiler’s ability to provide efficient and dependable steam solutions for the paper industry. With stable performance, proven chain grate technology, strong manufacturing capability, and suitability for local fuel conditions, this boiler supports continuous production and long-term cost-effective operation.

If your paper mill or industrial facility is looking for a reliable coal-fired steam solution tailored to your operating conditions, contact ZOZEN Boiler to learn more about the SZL 12 tph Chain Grate Coal-Fired Steam Boiler and receive a customized proposal for your project.