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Case Study: Application of Cast Stone Composite Pipes for Tailing Transport at the Zhetysu Tungsten Mine in Kazakhstan
Kazakhstan’s Jetisu Tungsten Industry has constructed a tailings‑transport pipeline using cast‑stone composite pipes, with a total length of 4,600 meters. The project was commissioned in December 2023 to handle tungsten‑ore tailings, processing 36,000 tonnes of raw ore per day. To date, it has been operating steadily, with no wear, no leaks, and no unplanned shutdowns, ensuring stable and reliable performance throughout.
The project transports Jietesu (Bakuta) scheelite flotation tailings, which are high‑temperature hydrothermal quartz‑vein type tailings with a d₅₀ of 0.052 mm, 62% passing 200 mesh, a slurry density of 2.71 t/m³, and extremely low sulfur content; the slurry is weakly alkaline. The gangue consists predominantly of angular crystalline quartz, resulting in a slurry with low yield stress and severe erosive wear. Located in a high‑altitude cold climate zone and spanning a transport distance of approximately 5 km, this project serves as a benchmark for long‑distance tailings conveyance at typical quartz‑vein tungsten mines in Central Asia.
Faced with the demanding operating conditions of severe abrasive wear from angular quartz, extreme cold climates, and long-distance material transport, cast‑stone composite pipes deliver outstanding abrasion resistance and structural stability, ensuring long-term, trouble‑free operation. Their exceptional practicality and adaptability to harsh environments make them a mature and reliable solution for the high‑capacity, long‑distance conveyance of tungsten mine tailings in overseas cold‑climate regions.
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