【Ten Years of Rapid Development in Chemical Processing Equipment】From 1422 to 2024: Domestic production of heavy slurry pumps for use in medium and high-temperature preheaters

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Happy New Year 2024 **********************【Ten Years of Rapid Development in Chemical Processing Equipment】A continuously updated summary post is available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** On the morning of December 12, 2023, Hubei Technology Exchange held a meeting in Wuhan to assess the scientific and technological achievements related to the project \"Development of a certain type of heavy-duty slurry pump\" carried out by a pump manufacturing company. After a comprehensive and rigorous evaluation by the expert panel, it was determined that the achievements of this project are at an internationally advanced level as a whole. The expert panel for this evaluation meeting consisted of Professor Kong Jianyi from Wuhan University of Science and Technology, Professor Mei Shunqi from Wuhan Textile University, Professor Sheng Buyun from Wuhan University of Technology, Professor Xu Jianfeng from Huazhong University of Science and Technology, and Professor Huazhong Ping from Hubei University of Technology. Professor Kong Jianyi served as the panel leader, while Professor Mei Shunqi acted as the deputy leader. The meeting was chaired by Meng Zhe, director of Hubei Technology Exchange. Wu Zhihong, deputy general manager for technology at the pump manufacturing company, delivered a welcome speech; Deng Jiaxiang, head of the Science, Technology and Quality Department, gave an appreciation speech; and Liu Kuishan, an engineer from the product research and development department, presented a report on the project. At the meeting, the committee’s expert group reviewed the evaluation materials, listened to reports on the outcomes, and conducted inquiries and discussions. Through careful examination and thorough discussion by the experts on the evaluation committee, it was concluded that the \"certain heavy-duty slurry pump\" developed features a highly efficient hydraulic model for its flow-through components, which improves the pump’s hydraulic efficiency and effectively reduces wear caused by the medium on the impeller outlet and the pump’s flow channels ； A new high-carbon, ultra-high-chromium duplex stainless white cast iron material named WH15 has been developed for multi-stage series heavy slurry pumps, endowing this material with excellent properties in terms of corrosion resistance, wear resistance, heat shock resistance, and high-pressure tolerance ； A mechanical seal system for heavy-duty slurry pumps with multi-stage series operation, capable of handling solid-liquid two-phase flow as well as variable temperature and pressure conditions, has been developed, addressing the issue of self-balancing of the seal fluid pressure. As a result, the product exhibits high efficiency, long service life, high reliability, and easy maintenance under the extremely harsh conditions of transporting mineral metallurgical slurry in mines. It enables the domestic substitution of feed pumps used in medium- and high-temperature preheaters, filling a gap in China’s market. Its key technical parameters are on par with those of advanced international products, making it suitable for widespread application.