Scientific and technological projects realize the efficient use of hard-to-select iron ore
On February 29, the reporter learned from Northeastern University that recently, the research project of “Anshan-type micro-particle refractory iron ore efficient use research and practice†completed by the research team of Professor Dong Yuexin of Northeastern University has achieved double breakthroughs in theory and technology, and many technologies. It has filled the gaps at home and abroad, and the overall technology has reached the international leading level and has become a landmark achievement in the development of national iron ore resources.
For the first time, the project successfully applied the new technology of “fine-grain iron ore flotation separation†and “two-stage continuous grinding-single magnetic separation-fine screening and re-grinding†to the production practice. The accumulated new benefits in the past three years were 2.816 billion yuan, which was huge. Economic and social benefits.
Due to the low grade of China's iron ore resources and high mining and selection costs, domestic iron ore production is far from meeting the needs of the development of the steel industry. The dependence on foreign countries is as high as 70%, which has a serious impact on the healthy and sustainable development of China's steel industry.
The reporter learned that Anshan-type iron ore is the most common type of iron ore in China, with reserves of 450 billion tons, accounting for more than 70% of all iron ore. In the Anshan-type iron ore mine, there are more than 20 billion tons of fine-grained iron ore. How to strengthen the efficient development and utilization of fine-grained refractory iron ore has important strategic significance.
In 2008, Northeastern University and Anshan Iron and Steel Group Mining Co., Ltd. launched the “Research and Practice of Key Technologies for Efficient Utilization of Anshan-type Micro-Grain Refractory Iron Oreâ€. Through research, the project team put forward the technology of “fine flotation separation of fine-grained iron ore†and “two-stage continuous grinding-single magnetic separation-fine screening and re-grindingâ€, and successfully applied in industrial practice to realize the difficulty of Anshan-type fine particles. Efficient use of iron ore resources.
It is understood that at present, the research results of the project have been successfully promoted and applied in the Donganshan Sintering Plant and the Dagushan Pellet Plant, which has revitalized 1.12 billion tons of refractory iron ore resources and realized the Anshan-type fine-grained refractory iron ore. effective use of technological advances metallurgical mining enterprises played an exemplary and leading role.
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