Dr. Kaixi Jiang is currently the Chief Scientist of Zijin Mining Group Co., Ltd., a global leading company in mining and metal extraction of non-ferrous materials and a Fortune 500 company. Meanwhile, he also serves as a Professor in the Zijin School of Geology and Mining at Fuzhou University, China, and as the Chief Scientist at BGRIMM Group Co., Ltd. (Former Beijing General Research Institute of Mining & Metallurgy, the national research institute of non-ferrous materials in China). Since he was admitted to Northeastern Institute of Technology (current Northeastern University) in 1978, he has been engaged in the R&D of metal extraction process and engineering application, technology management, national industry strategy, and education in the field of non-ferrous metallurgy for 46 years. His research accomplishments and leadership have broadly impacted the non-ferrous metallurgy community nationally and internationally. 

Dr. Jiang began his college studies when he was 15 years old and his career at the age of 19. From there, he developed a persistent interest in non-ferrous metallurgy. Continuously learning in industry and research, he earned an MS degree from Northeastern University in China and Dr.-Ing. from RWTH Aachen University, Germany, both in non-ferrous metallurgy, respectively. When he returned to China in 1995 from Germany, he immediately became a key researcher in the BGRIMM's metallurgical department.

Over the last 30 years, Dr. Jiang and his team have undertaken over 200 R&D, consulting, and engineering projects in non-ferrous metallurgy funded by the government and industry. His research area covered a number of non-ferrous metals, including copper, nickel, cobalt, zinc, lead, tin, gold, silver, PMG, lithium, aluminum, gallium, germanium, indium, and other rare metals, as well as arsenic, antimony, bismuth, etc. Relying on insistent thinking, in-depth insight, and extensive practice, he proposed the "Principle of minimum chemical reaction quantity" for simplifying and optimizing process flow of metal extractions. The principle provided theoretical guidance how to reduce unnecessary or harmful by-reactions, further minimized the consumption of auxiliary materials, energy, and costs while reducing wastes during the operations. Based on the principle, he developed the controllable pressure leaching technology for the complex and refractory metal ores. This technology has been widely adopted over last 20 years and further developed the following metallurgical processes: (1) inverse leaching flow (atmospheric-pressure leaching) for nickel laterite ores; (2) pressure oxidation leaching of As2S3 filter cake from smelting off-gas washing; (3) pre-oxidation of low grade molybdenite concentrate; (4) all pressure leaching of Ni-Co-Cu of secondary Ni3S2-concentrate; (5) pressure leaching Zn-Ga-Ge of zinc concentrate by controlling oxidation potential; (6) combination of iron removal of hot acid solution and zinc concentrate pressure leaching, etc. All these techniques have been commercially implemented in the production lines of metal extraction by the companies in China, Peru, and the Philippines, and yielded great economic benefits to the industry.  

Dr. Jiang proposed the concept of "Preferring ore dressing to metallurgical extracting, complement each other”, resulting in a series of comprehensive processes developed for complex metal oxide ores, which have been applied in large-scale production lines. For example, (1) "ammonia leaching and residue flotation" was developed to explore Tangdan high alkaline gangue copper oxide - sulfide ore; (2) Tank leaching - SX-EW was firstly applied to produce copper cathode Yulong copper oxide ore with high clay content in Tibet; (3) the "beneficiation-metallurgy combination" has been put into large-scale industrial practice for several copper cobalt deposits in DRC (Congo); (4) the world first big-scale Wälz process for 145kt/a zinc oxide ore was commissioned in Peru in 2008; (4) his proposed Wälz process was adopted for Huoshaoyun project design, the largest lead-zinc mine in Asia, etc.

Dr. Jiang is an outstanding leader in scientific research and industry practices. In 2002, he was promoted to Vice President of BGRIMM, the top research institute of non-ferrous mining and metallurgy in China, and again to President in 2006. During his 14-year tenure, he led the construction of research platforms, solved many complicate technical challenges for the industry, and promoted BGRIMM's position in mining and metallurgy in the country, while expanded international cooperations with colleagues globally, including Australia, United States, Canada, United Kingdom, Germany, South Africa, Kazakhstan, Mongolia, Russia, Zambia, Finland, Romania, Ukraine, Serbia, Chile, Peru, South Korea, Pakistan, Saudi Arabia, etc. which brought BGRIMM into a prestigious institute of mining and metallurgy internationally. In 2016, he was engaged as the Chief Scientist of BGRIMM after a 10-year duty as President to continue his leadership in R&D of the institute. In 2019, Dr. Jiang was appointed as the Chief Scientist and Chief Engineer of Zijin Mining Group Co, Ltd, a leading company in non-ferrous mining and metallurgy and a Fortune 500 company, where he led the company's technical management and technological breakthroughs in major projects and solving world-class technology problems in operations, such as lithium extraction, carbon neutral metallurgical processes, consumption of Na2SO3 in Cu-Co leaching, lifespan of Wälz kiln, harmless treatment of arsenic slag, quality of cathode copper, PGM recovery, enhancing R&D capacity and training young engineers 

Dr. Jiang is also an active member and leader in the non-ferrous metallurgy communities, and played a critical role in the leading professional societies. He has served as the Vice Chairman of the Chinese Nonferrous Metal Society (2010-2021) and the Standing Director of the China Mining Association (2013 - 2018). He attracted numerous young researchers to participate in conferences in non-ferrous metallurgy, and was also a supporter of TMS-NFsoc joint conferences over the last few years. 

As a result, Dr. Jiang conducted more than 200 research projects funded by the government and industry, published more than 200 technical papers and books, issued more than 60 patents, and advised more than 30 graduate students for their project research. He was invited to several international conferences for keynote presentations. He received a number of prestigious awards and honors, including 4 “National Science and Technology Award” from the State Council of P. R. China (2009, 2012, 2015, 2018) and “National Outstanding Science and Technology Worker” from China Association for Science and Technology (2014). In 2024, he was awarded the “National Outstanding Engineer” by the State Council of P. R. China, the top honor for engineering in the country. He was also engaged by many leading organizations to guide their metallurgical strategy and engineering practices, such as Board Director of China Energy Conservation and Environmental Protection Group Co., Ltd (2016-2019). & China Gold Group Co, Ltd. (2017-2019), Expert Member of the 863 High-Tech Program Advisory Committee by the Ministry of Science and Technology of P. R. China (2012-2016), Member of Advisory Committee of the National Natural Science Foundation of China (2007-2019). He was selected as the leader of the national level scientific and technological innovation team for "Clean and Efficient Extraction and Comprehensive Utilization of Nonferrous Metals"