Refractory Solutions for
Waelz Process & Resource Recycling
Zhengzhou Jinheyuan Refractories Co., Ltd. (JHYRef) specializes in providing refractory solutions for the Waelz rotary kiln process. Serving the global zinc oxide and zinc-bearing material recycling industry, we are dedicated to providing specialized refractory systems that enhance metal recovery efficiency and reduce energy consumption through a deep understanding of operational conditions.
Operational Challenges
01
Ring Formation (Accretion Build-up)
Unstable feed chemistry and low-melting phases promote sticky accretions that restrict kiln cross-section and disturb heat transfer, often forcing burn-down actions or shutdowns.
02
High-Temperature Scouring & Mechanical Stress
Flame instability and lining loss create local hot spots, while cyclic mechanical loads near riding rings accelerate cracking and structural damage.
03
Chemical Attack (Alkali / Chlorides / Zn Vapors)
Volatile alkali, chlorides, and zinc-bearing vapors infiltrate the lining at ~1200°C, degrading strength and accelerating corrosion.
04
Spalling & Erosion (Thermal Cycling + Abrasion)
Frequent start-stop and lining instability trigger thermal spalling, while bed movement and dust-laden gas streams cause progressive abrasion.
Why Choose JHYRef?
Core Capabilities in Waelz Refractory Solutions
- Beyond Product Supply: JHYRef delivers engineering-driven refractory solutions that extend beyond materials alone. By integrating design, application, operation, analysis, and optimization, we ensure reliable lining performance in Waelz kilns operating under complex materials, high-temperature, and highly cyclic conditions.
- Lifecycle Engineering Support: In Waelz zinc recycling, lining performance depends not only on refractory properties but also on zoning design, installation quality, and operational compatibility. We connect material science with field engineering to maximize kiln performance while reducing total cost of ownership (TCO).
Our Integrated Approach
Design
Engineering-based refractory zoning and lining design aligned with thermal, mechanical, and zinc vapor conditions to enhance lining durability and kiln stability.
Application
On-site engineering support to ensure proper material selection, high installation quality, and controlled heat-up procedures that reduce early-stage failures.
Operation
Performance monitoring focused on temperature uniformity, lining service condition and thermal efficiency to maintain stable long-term operation.
Analysis
Root-cause technical analysis of alkali, acid and iron attack, zinc vapor effects, and structural degradation to prevent recurrent failures.
Optimization
Data-driven optimization to extend lining life, reduce maintenance frequency, and minimize total cost of ownership (TCO).
