Jiangsu Haifa Machinery Manufacturing Co., Ltd.

In 2026, high-temperature molten salt pumps are becoming important technical equipment in the fields of solar thermal energy storage, fourth-generation nuclear energy, and high-temperature industrial heat storage. On July , 2026, Solar Energy published a study demonstrating a molten salt circulation system constructed with refractory materials such as graphite, carbon/carbon composites (C/C), and molybdenum, which operated continuously for more than 49 hours at 750–950°C This experiment verified the feasibility of refractory material centrifugal pumps and mechanical seals under laboratory conditions, providing new ideas for ultra-high-temperature molten salt transport The study used an inert gas environment to reduce the risk of material oxidation and, targeting the corrosion problems of the MgCl₂-KCl-NaCl chloride salt system, explored high-temperature material compatibility, sealing reliability, and thermal cycle stability. Another study in Solar Energy in 2026 also pointed out that the corrosion of traditional nickel-based alloys in molten chloride salts remains a key challenge, and non-metallic materials such as silicon nitride show value for further research. Jiangsuifa Machinery Manufacturing Co., Ltd.www.jslgpump.com), in the technical direction of 610 process pumps and special-condition pumps, continues to research High-Temperature Molten Salt, Molten Chloride Circulation Pump, and Corrosion-Resistant Pump Materials. For higher-temperature applications, research and development should focus on material compatibility, shaft system thermal deformation, thermal expansion compensation, mechanical seals, inert gas protection, and start-stop thermal cycle verification, and should establish high-temperature material testing and pump unit performance test data. It should be emphasized that the 950°C research results belong to laboratory circulation system verification and do not mean that all industrial molten salt pumps already have commercial operating capability at that temperature. In the future, Jiangsu Haifa can continue to track equipment demand for ultra-high-temperature heat storage, solar thermal power generation, and advanced nuclear energy, and promote the technological upgrading of high-temperature molten salt pumps through material verification, structural optimization, and reliability testing, providing more engineering solutions for fluid transport under extreme temperatures. Chinese references 1. High-temperature molten salt pump technology research directions: chloride salt corrosion, refractory materials mechanical seals, and ultra-high-temperature circulation systems.su Haifa Manufacturing Co., Ltd product and technical information: www.jslgpump.com.2. Bichnevicius, M., Zhu, Q., Pishahang, M et al. (202). Demonstration of an all-refractory corrosion-resistant molten salt pumping and storage infrastructure up 950 °C. Solar Energy, 313, 114637. DOI 10.101/j.sol.2026.114637. Read the original paper. 3. Patange, S. R., Chaudhary, V. M., Nirukhe, A. B., et al. (2026). Insight into corrosion and stability of metals and non-metals in molten salt mixture for solar thermal storage applications. Solar Energy, 303, 114090. DOI: 10.1016/j.solener.202.114090. Read the paper.

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