Latest news with #rubidium
Sustainability Times
12 hours ago
- Science
- Sustainability Times
'China Achieves Unthinkable Feat': This Bold Extraction of 99.9% Ultra-Pure Rubidium from Salt Lake Brine Stuns the World
IN A NUTSHELL 🔬 Chinese scientists have developed a method to extract 99.9% pure rubidium chloride from low-grade brine, marking a significant breakthrough. from low-grade brine, marking a significant breakthrough. 🇨🇳 This achievement reduces China's reliance on foreign imports, particularly from Canada, strengthening its strategic mineral supply chain . . 💡 The new process involves innovative techniques like ore washing , rubidium leaching, and solvent extraction, offering substantial cost savings. , rubidium leaching, and solvent extraction, offering substantial cost savings. 🌍 China's advancement in rubidium extraction underscores its commitment to technological innovation and industrial resilience amid global competition. In a groundbreaking development, Chinese scientists have unveiled a novel method for extracting ultra-pure rubidium chloride from brine containing trace amounts of the metal. This achievement is a significant milestone for China's critical minerals supply, potentially reducing the country's dependency on foreign imports. As the world's largest consumer of rubidium, China has been reliant on countries like Canada for the majority of its imports. The breakthrough, reported by the Qinghai Institute of Salt Lakes, showcases China's growing expertise in strategic mineral extraction, promising a more self-sufficient future in high-tech and defense applications. The Significance of 99.9% Pure Rubidium The Qinghai Institute of Salt Lakes (ISL), a division of the Chinese Academy of Sciences, announced this remarkable achievement. Researchers succeeded in producing rubidium chloride with an astounding 99.9% purity from potassium chloride material, which contained a mere 0.001% rubidium. Previously, this ultra-low concentration was deemed commercially unviable, but the new process has changed that perception entirely. Rubidium is a soft alkali metal with critical applications across multiple sectors. It plays a vital role in high-tech fields, including atomic clocks, perovskite solar cells, aerospace systems, and specialized glass. The importance of rubidium is underscored by its use in ultra-precise atomic clocks, which lose less than one second over 3.7 million years. Additionally, its applications extend to medical research, particularly in imaging tumor cells. Despite holding some of the world's largest rubidium reserves, China has faced challenges in domestic development, primarily because over 97% of its rubidium is locked in low-grade hard rock deposits that are difficult and costly to process. Only a small fraction of rubidium is found in more accessible forms, such as salt lake brine, predominantly in Qinghai province and Tibet. This breakthrough could mark a turning point in China's rubidium industry. 'Biggest Wind Turbine Ever': China Smashes All Records With This Colossal Machine—But a Hidden Flaw Threatens the Whole Project A First for China: Reducing Dependency In 2021, China imported over 19,500 tons of rubidium concentrate, with a dependency rate of 66.3% on external sources like Canada and Zimbabwe. The addition of rubidium to the United States' critical minerals list in 2022 heightened the geopolitical stakes surrounding mineral access. He Xinyu, in China Mining Magazine, emphasized the need for China to bolster resource security through technological innovation and diplomatic engagement. The ISL's electrochemical separation group addressed the scientific and engineering challenges of rubidium extraction. They developed a high-fidelity model to trace rubidium's distribution during potassium salt processing, identifying the reasons for rubidium's resistance to enrichment. This model not only optimizes rubidium concentration but also has potential applications in resource mapping and separation techniques. The integrated process devised by ISL encompasses ore washing, rubidium leaching, enrichment, solvent extraction, and purification. This system has been successfully tested using potassium chloride from Qinghai's Qarhan Salt Lake, one of China's largest inland salt lakes, consistently yielding 99.9% pure rubidium chloride from low-grade feedstock, which was previously considered unusable. 'China Leaves West in the Dust': Its Small Nuclear Reactor Leap Puts Beijing Years Ahead in the Future of Clean Energy Impact on Costs and Industrial Resilience Beyond its technological significance, this innovative process could result in substantial cost savings. A 2022 cost analysis by ISL scientist Gao Dandan's team found that rubidium chloride produced through this method could be manufactured at just one-third of its current market price. This economic advantage could strengthen China's industrial resilience amid growing global competition for strategic minerals. Supported by the National Natural Science Foundation, CAS, and Qinghai provincial authorities, this development signifies a crucial step in China's pursuit of self-reliance in strategic mineral resources. By enhancing its capacity to produce rubidium internally, China is better positioned to withstand external pressures and maintain its lead in high-tech sectors. This breakthrough not only underlines China's commitment to technological advancement but also its determination to secure essential resources. As the global demand for strategic minerals intensifies, China's innovative approach could set a precedent for other nations seeking to bolster their mineral independence. China's Massive Nuclear Laser Project Exposed by U.S. Satellite—This Shocking Military Development Could Tip the Balance of Power The Future of Strategic Mineral Extraction The success of China's new rubidium extraction method is a testament to the country's growing capabilities in strategic minerals. As technological advancements continue to unfold, the implications for global mineral supply chains are profound. China's achievement could inspire similar innovations in other countries, potentially reshaping the landscape of mineral extraction worldwide. The Qinghai Institute of Salt Lakes' approach to overcoming challenges in rubidium extraction reflects a broader trend of leveraging scientific research to enhance resource security. By reducing dependency on foreign sources, China is strengthening its position in the high-tech and defense sectors, ensuring a more stable and sustainable future for its industries. As the world grapples with the complexities of mineral supply chains, China's breakthrough prompts an open-ended question: How will other nations respond to the increasing need for strategic mineral self-reliance in the face of evolving global dynamics? Our author used artificial intelligence to enhance this article. Did you like it? 4.7/5 (23)
South China Morning Post
7 days ago
- Science
- South China Morning Post
Rare metals war: China extracts critical mineral rubidium from brine for first time
Chinese scientists have achieved a breakthrough in the commercial extraction of the critical metal rubidium directly from salt lake brine, potentially slashing dependence on imports – mostly from Canada – that now supply two-thirds of China's needs. This industrial-scale method produces ultra-pure rubidium chloride from ultra-low concentrations, offering a new domestic source for this strategically vital material. The Qinghai Institute of Salt Lakes (ISL) of the Chinese Academy of Sciences (CAS) announced on Wednesday that researchers had produced 99.9 per cent pure rubidium chloride from potassium chloride material containing just 0.001 per cent rubidium. Rubidium, a strategically vital metal for emerging industries, is widely used in the electronics, specialty glass and aerospace sectors. The metal has extensive military, technological and civilian applications. For example, rubidium ions can help improve the performance of perovskite solar cells, while ultra-precise rubidium atomic clocks lose less than one second every 3.7 million years. Rubidium chloride is used in tumour cell imaging for medical research. China faces substantial challenges in rubidium resource development, including low ore grades, difficult extraction conditions and reliance on imports.
Forbes
23-05-2025
- Science
- Forbes
Volcanic Rocks Reveal How Gold Reaches Earth's Surface
Crystallized gold in rocky matrix. getty Gold is a surprisingly common metal (it is more common than lead if we consider the bulk composition of Earth), but more than 99.999 percent of Earth's stores of gold and other precious metals lie buried under 3,000 kilometers of solid rock, locked away within Earth's mantle and metallic core and far beyond the reaches of humankind. A new study published by researchers from the University of Göttingen suggests that at least some of the supplies of gold and other precious metals that we rely on for their value and applications in modern technology may have come from Earth's core. Compared to Earth's rocky mantle, the metallic core contains a slightly higher abundance of a particular isotope known as rubidium-100. When Earth formed around 4.5 billion years ago the rubidium was locked in the core together with gold and other precious metals. Standard rock analysis methods aren't sensitive enough to identify and quantify rubidium isotopes. The researchers were able to amplify the signal by first dissolving rocks in hot acid, condense the resulting steam back to a liquid, and finally measuring the rubidium signal in the concentrated samples. Analyzing lava from Hawaiʻi, the researchers found an unusually high rubidium-100 signal in the samples. Hawaiʻi's active volcanism is feed by large plumes of molten rock rising up in Earth's mantle. The origin, dynamics and composition of such mantle plumes is still debated among geologists. The rubidium signal suggests that these rocks ultimately originated from the core-mantle boundary. "Our findings not only show that Earth's core is not as isolated as previously assumed. We can now also prove that huge volumes of super-heated mantle material—several hundreds of quadrillion metric tons of rock—originate at the core-mantle boundary and rise to Earth's surface to form ocean islands like Hawaiʻi," explains study coauthor Professor Matthias Willbold, researcher at Göttingen University's Department of Geochemistry and Isotope Geology. 'When the first results came in, we realized that we had literally struck gold. Our data confirmed that material from the core, including gold and other precious metals, is leaking into Earth's mantle above, ' explains study author Dr. Nils Messling, a geochemist working at the same department, the Pure gold is inert in Earth's mantle and tends to stay there. However, gold atoms can bound with three sulfur atoms forming a gold-trisulfur complex. This complex is highly mobile in the molten sections of the mantle called magma. Where material from Earth's core-mantle zone has the opportunity to rise to the surface, like along subduction zones or in a mantle plume, it can mix with sulfur-rich fluids and form gold-bearing magmas. As the magma rises to the surface, degassing and circulation of hydrothermal fluids further concentrate the gold in veins and clusters, forming a deposit that can be mined. The study,"Ru and W isotope systematics in ocean island basalts reveals core leakage," was published in the journal Nature. Additional material and interviews provided by the University of Göttingen.
