Zhang Guocheng

Zhang Guocheng

Zhang Guocheng, male, Han nationality, born in Kunming, Yunnan Province on October 12, 1931, is an academician of Chinese Academy of engineering, an expert in rare earth metal smelting and separation, and a senior engineer and doctoral supervisor of Beijing General Research Institute of nonferrous metals.

From 1950 to 1952, Zhang Guocheng worked in the culture and Engineering Corps of the Political Department of the logistics of the fourth corps of the second field army of the Chinese people's Liberation Army; from 1952 to 1954, he studied in the Department of metallurgy of Yunnan University; from 1954 to 1956, he was recommended to study in the Department of metallurgy of Kunming Institute of Technology (the predecessor of Kunming University of science and Technology); in 1956, he was assigned to work in Beijing General Research Institute of nonferrous metals as the special director of the research office In 1995, he was elected academician of the Chinese Academy of engineering.

Zhang Guocheng has been engaged in smelting various rare earth concentrates and separating single rare earth elements for a long time.

Character experience

On October 12, 1931, Zhang Guocheng was born into a poor family in Kunming, Yunnan Province. from January 1950 to January 1952, he worked in the cultural and Arts Troupe of the Political Department of the rear service of the fourth corps of the second field army of the Chinese people's Liberation Army. From January 1952 to January 1954, he studied in Metallurgy Department of Yunnan University. From January 1954 to January 1956, he was recommended to the metallurgy department of Kunming Institute of Technology (the predecessor of Kunming University of Technology). In January 1956, he was assigned to work in Beijing General Research Institute of nonferrous metals as the special director of the research office. in 1995, he was elected academician of Chinese Academy of Engineering (Ministry of chemical industry, metallurgy and Materials Engineering).

Main achievements

Achievements in scientific research

According to the official website of Chinese Academy of Engineering in April 2020, Zhang Guocheng has successfully researched and popularized a new process of smelting bastnaesite by oxidation roasting catalytic leaching method; invented a new process of smelting mixed rare earth concentrate by sulfuric acid enhanced roasting extraction method, with a smelting capacity of about 100000 t / A; successfully studied a new process of extracting and separating rare earth elements from rare earth sulfate solution by P204 extractant; and invented a new process of extracting and separating rare earth elements from rare earth sulfate solution by P204 extractant The new technologies, such as the production of fluorescent grade europium oxide by alkalinity method, the production of neodymium oxide by P204 extraction method, and the oxidation and reduction of cerium and europium ions by electrochemical method, have been popularized in industry. as of September 2016, Zhang Guocheng has completed more than 20 major rare earth smelting technology researches, most of which have been promoted and applied in industry. He built the world's largest rare earth production plant with his invention patent; actively participated in the western development, cooperated with Gansu rare earth company, built the world's largest production line of europium oxide, and successfully developed the unique process of producing high purity europium oxide, which contributed to the localization of color TV fluorescent materials; created the third generation of acid smelting process of Baotou rare earth concentrate (Baotou mine for short) To establish the international advantages of China's rare earth industry; to provide a complete set of technology for Gansu rare earth company, the world's largest production base of rare earth chloride (hereinafter referred to as Gansu company); to develop rare earth high-tech products and change the world's rare earth raw materials; to cooperate with Gansu company to build the world's largest production line of high purity europium oxide. In the 1970s, Zhang Guocheng aimed at the mixed rare earth ore stored in Baotou, China. After repeated deliberation, he proposed the process of using rotary kiln sulfuric acid roasting to treat the ore, resulting in the first generation of acid process: sulfuric acid roasting, double salt precipitation and alkali conversion to produce mixed rare earth chloride. In order to solve the shortcomings of the first generation of acid process, Zhang Guocheng led everyone Finally, the second generation of acid process, sulfuric acid enhanced roasting extraction, was successfully studied. Its recovery rate was increased by about 20% and the cost was reduced by about 25%. It has been successfully applied to the production practice, and has become the main technological process for the production of rare earth chloride from Baotou mine in China. in the 1980s, Zhang Guocheng and his colleagues started the experiment of the third generation of new acid smelting process, that is, the new technology of extracting and separating rare earth from sulfuric acid solution. Through hard work, the third generation of new acid smelting process was born, that is, Baotou ore was roasted with sulfuric acid and cleaned by water leaching to obtain pure rare earth sulfate solution, which was directly extracted and separated with p-204 to produce samarium, europium, gadolinium concentrates, pure neodymium oxide and rare earth chloride products. in the 1990s, with the support of the natural science foundation of China and the national key basic research project - "973", Zhang Guocheng successfully researched a new process for the rare earth mine in Sichuan. Because the nature of the mine is similar to that of many countries in the world, the new technology is not only conducive to the development and application of the mineral resources, but also has a great impact on the development of the world's rare earth industry influence. according to the official website of Chinese Academy of Engineering in April 2020, Zhang Guocheng published more than 30 academic papers.

personnel training

Zhang Guocheng believes that it is very hard to come up with some achievements in scientific research. It is difficult to become a scientist only by working eight hours a day. We must integrate ourselves into our work, be good at conceiving, boldly practice, and strive for innovation. We should have our own things in the achievements, get rid of the shackles of others, and strive to surpass others. Zhang Guocheng believes that if you want to make original craft, you should love your work, be familiar with your work, and understand the nature of what you want to do. Only in this way can you find out the shortcomings and shortcomings in your work and come up with solutions. For innovation, Zhang Guocheng believes that innovation does not fall from the sky, it is gradually evolved from the accumulation of knowledge. Zhang Guocheng also suggested that students should love their work, be familiar with their work, find out its faults and find ways to solve the problems, so as to promote the progress of science and technology. "If you hate your work and don't feel comfortable doing it, you can't get good grades in your major." Zhang Guocheng warned the students: scientific research should not be satisfied with the status quo. After finishing a job, you should ask yourself what belongs to you in this job, "bitter, short life", always face the difficulties in the process with an optimistic attitude, "adventure and fearlessness", and in the face of success and failure, academician Zhang believes that no matter when you succeed or fail Only in this way can we do a good job. On March 8, 2012, Zhang Guocheng attended a series of academician's reports on "my ideal, practice and sentiment" sponsored by Central South University. on the morning of November 23, 2012, at the invitation of School of materials science and engineering of Henan University of technology, Zhang Guocheng came to the circular lecture hall of the university to give a report entitled "general situation and current situation of rare metals in China".

Honorary recognition

Social service

Zhang Guocheng is also executive director of China Rare Earth Society, part-time professor of Henan University of technology, senior executive director of the 6th China Nonferrous Metals Society and honorary chairman of rare metal metallurgy Academic Committee of China Nonferrous Metals Society.

Character evaluation

As one of the early members of China's rare earth metallurgy development and research, Zhang Guocheng has made great contributions to the development of China's rare earth industry and the establishment of China's important position in the world. Zhang Guocheng is one of the leaders of rare earth materials metallurgy in China, and has made great contributions to the development of China's nonferrous metals industry. (Shanghai Xinshuo metal materials Co., Ltd.) Zhang Guo has made outstanding contributions to China's rare earth industry and has been praised as "father of acid process" by some foreign rare earth peers in China. (review by Chinese Academy of Engineering) Baidu Encyclopedia content is shared by netizens. If you find that your data content is inaccurate or incomplete, you are welcome to use your own data service (free) to participate in the correction. Go to > > now

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