东北大学工学部新井邦夫教授等人,利用水的高温高压超临界流体技术,开发了磁卡等磁性材料的高质量氧化铁的简单批量生产方法。超临界流体在高温、高压状态下,具有液体和气体双重性能,化学反应速度快,可利用这种技术从某些物质中萃取有用成份。这次使用这种技术从岩石中提取必要的金属,开发的氧化 Northeastern University, Professor Niu Banfu and others, the use of water, high temperature and pressure supercritical fluid technology, the development of magnetic cards and other magnetic materials, high-quality iron oxide simple batch production methods. Supercritical fluid at high temperature and pressure conditions, with dual liquid and gas properties, chemical reaction speed, you can use this technology to extract useful substances from certain substances. This time using this technique to extract the necessary metals from the rock, the development of oxidation