The world's first low-temperature reduction nickel-iron alloy production technology review

On November 6, the world's first scientific and technological achievements appraisal meeting on the "low-temperature reduction of nickel laterite + microwave grain growth and production of new technology for nickel-iron production" was held in Dafeng Port, Dafeng District, Yancheng. The evaluation will be organized by the Chinese Society of Metals. According to the national regulations concerning the transformation of scientific research results, seven experts including the academician of the Chinese Academy of Engineering, the former dean of the Chinese Academy of Engineering, and the chairman of the China Metal Society, Gan Yong, will form an expert group. Technology to evaluate.

The expert group formed a standard procedure of on-site inspection, inquiry of trial production records, and international technical investigation, and formed the opinion of the expert group on the principles of fairness, impartiality, openness, and seeking truth from facts: The technology has reached the international advanced level, in which high power is used. Microwave equipment to produce nickel-iron technology has reached the international advanced level.

The low-temperature reduction nickel-iron alloy production process is a patented technology researched by China Metallurgical Group's Xinye Group, and Jiangsu Dafeng Port Heshun Technology Co., Ltd., a subsidiary of Jiangsu Dafeng Seaport Holding Group, cooperates with the patent holders to carry out industrialization. . The total investment of the project is 170 million yuan, and a production line of 10 tons of nickel-iron alloy with an annual output of 30,000 tons has been completed. After five months of trial production, all production targets basically meet the requirements. The production line features low energy consumption, good environmental protection facilities, and low production costs. Compared with the traditional process, the smelting temperature is reduced by about 300°C, and the smelting electricity consumption is reduced by about 50%. Without the high-temperature melting conditions, the yield of nickel is as high as 92% or more. The lateritic nickel ore containing about 1.2% nickel can be economically treated. Production of 1 ton of nickel-iron alloy (containing 10% of nickel) can reduce carbon dioxide emissions by 2,096 kg, reduce sulfur dioxide emissions by 19.2 kg, reduce dust emissions by 544 kg, and eliminate the heavy pollution of sintering , smelting and other processes, completely changed the traditional metallurgy The process of heavy smoke, dust flying, the economic benefits and social benefits are significant.

The technology provided technical support for the “Belt and Road” nickel-iron project implemented in Indonesia by the Jiangsu Dafeng Seaport Holding Group, which opened up broad prospects for the export of complete sets of equipment and technology.