Production method of metal magnesium
A production method and metal magnesium technology, applied in the field of comprehensive utilization of metallurgical waste slag, can solve the problems of limited utilization of ferronickel slag, failure of comprehensive utilization, and low reaction efficiency, so as to enrich heat energy, reduce the cost of magnesium smelting, and eliminate the impact on the environment. Harmful effect
Active Publication Date: 2022-07-12
北京中冶设备研究设计总院有限公司
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Problems solved by technology
[0008] In view of the problems referred to above, the purpose of this invention is to provide a kind of production method of metal magnesium, to solve current in the prior art, in the process of extracting metal magnesium from ferronickel slag, reaction efficiency is low, to the utilization amount of ferronickel slag Limited and inability to comprehensively utilize elements such as Fe, Mg, Si, Al and the thermal energy of high-temperature molten nickel-iron slag, resulting in a large waste of resources and other problems
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[0027] In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It will be apparent, however, that the embodiments may be practiced without these specific details.
[0028] In view of the above-mentioned problems in the prior art, the process of extracting metal magnesium from ferronickel slag has low reaction efficiency, limited utilization of ferronickel slag, and cannot comprehensively utilize elements such as Fe, Mg, Si, Al, etc. and high temperature melting. The thermal energy of the nickel-iron slag causes a lot of waste of resources and other problems. A production method of metal magnesium is proposed.
[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0030] In order to illustrate the production method of metallic magnesium provided by the invention, figure 1 Th...
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The invention provides a method for producing metallic magnesium, which comprises the following steps: adding high-temperature molten nickel-iron slag into a vacuum reaction vessel, and performing vacuum treatment on the vacuum reaction vessel; Spray the reducing agent powder; heat the vacuum reaction vessel into which the reducing agent powder is sprayed, so that the nickel-iron slag and the reducing agent powder undergo a sufficient reduction reaction to obtain low-silicon SiFe and high-grade magnesium-containing slag; The slag-reducing agent is added into the vacuum reaction vessel after that to obtain a liquid slag containing magnesium oxide; ferrosilicon is added to the vacuum reaction vessel after the slag-reducing agent is added, and the elemental magnesium produced in the vacuum reaction vessel is purified and recovered to obtain Magnesium metal. The invention can solve the problems in the prior art, such as low reaction efficiency, high cost, and limited utilization of ferronickel slag in the process of extracting metallic magnesium from ferronickel slag.
Description
technical field [0001] The invention belongs to the technical field of comprehensive utilization of metallurgical waste slag, and more particularly relates to a production method of metal magnesium. Background technique [0002] Ferronickel slag is the liquid or solid waste slag discharged from the ferronickel smelting process. About 6 tons of slag are produced for every ton of ferronickel produced. It has become the fourth largest smelting slag after iron slag, steel slag and red mud. Compared with other metallurgical slag, nickel-iron slag is difficult to recover valuable metals, and the amount of slag discharge is large, which has gradually become a major problem in metallurgical waste slag treatment. At present, the development of ferronickel slag disposal and utilization technology is relatively lagging behind. The comprehensive utilization rate of ferronickel slag in my country is less than 10%, and there is a lack of large-scale consumption. It will cause pollution t...
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IPC IPC(8): C22B26/22C22B7/04C22B5/04C21B13/00C22B9/04C22B9/10
CPCC22B26/22C22B7/04C22B7/001C22B5/04C21B13/0006C22B9/04C22B9/10Y02P40/10
Inventor 李凤善黄忠源梁文玉张富信刘猛张杰徐子涵陈欣舒
Owner 北京中冶设备研究设计总院有限公司