ZGXT(SZ:000831) Sou Hu Cai Jing·2025-06-23 11:04Core Viewpoint - The article highlights the transformative impact of Xu Guangxian on China's rare earth industry, emphasizing how his innovative extraction methods shifted the global market dynamics, allowing China to dominate over 90% of the high-purity rare earth market and challenge Western monopolies [1][3][35]. Group 1: Historical Context - China previously sold rare earth materials at low prices and had to import refined products at high costs, leading to significant economic losses [1]. - In the 1970s, a critical military task required the separation of rare earth elements praseodymium (Pr) and neodymium (Nd), which was a recognized global challenge due to their similar chemical properties [7][9]. Group 2: Xu Guangxian's Contributions - Xu Guangxian, born in 1920, returned to China after studying in the U.S. and focused on rare earth extraction techniques [12][14]. - He developed a novel extraction method called "extraction method" that improved efficiency compared to the traditional "workshop" approach [16]. - Xu's team utilized a large number of separating funnels in a labor-intensive process to refine the extraction technique, which took over a hundred days for simulations [18][20]. Group 3: Technological Breakthroughs - Xu's innovative approach led to the creation of a mathematical model that simplified the extraction process, allowing for rapid optimization of production parameters [24][26]. - This breakthrough, termed "one-step amplification," enabled theoretical models to directly inform large-scale production, significantly enhancing efficiency [28]. Group 4: Industry Impact - By the 1990s, Chinese companies controlled over 90% of the global high-purity rare earth market, leading to the decline of international competitors [35]. - The article notes that the initial success led to price wars among domestic companies, undermining the value of rare earth resources [37]. Group 5: Strategic Concerns - Xu Guangxian raised concerns about the sustainability of China's rare earth resources, advocating for protective measures to prevent depletion and environmental damage [39][41]. - His efforts resulted in significant national policy changes aimed at safeguarding rare earth resources and promoting strategic advantages for China [43]. Group 6: Legacy - Xu's teachings and contributions have influenced generations of chemists and rare earth specialists in China, ensuring the continuation of his scientific spirit and dedication to national interests [46].