A clean and continuous process for reducing metal magnesium

A metal magnesium and process technology, applied in the field of non-ferrous light metal metallurgy, can solve problems such as complex processes and multiple equipment, and achieve the effects of strong controllability, low labor productivity, and reduced labor intensity

Active Publication Date: 2021-11-23
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

This process can realize the one-time simultaneous production of metal magnesium and magnesium aluminum spinel in the same reduction furnace, which solves the problem of complex production of metal magnesium and magnesium aluminum spinel in previous similar processes with multiple equipment and multiple processes

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  • A clean and continuous process for reducing metal magnesium

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Embodiment Construction

[0028] The present invention will be described in detail below in combination with specific embodiments.

[0029] A clean, continuous process for reducing metal magnesium is carried out in the following process steps. First, magnesium oxide and aluminum powder are ground and mixed uniformly, wherein the weight ratio of magnesium oxide and reducing agent aluminum powder is MgO:Al=2.7~3.1:1, The change of the proportion of ingredients has little effect on the quality and reduction rate of magnesium (the quality and reduction rate of magnesium are determined by the process temperature and time), but it has a greater impact on magnesium aluminum spinel. When MgO:Al= When the ratio is 2.7:1, high-quality magnesium-aluminum spinel products with a magnesium-aluminum spinel content of more than 90% can be obtained; when the ratio of MgO:Al=3.1:1, a magnesium-aluminum spinel content of more than 75% can be obtained The magnesium-rich magnesium-aluminum spinel product; then the mixed ma...

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Abstract

The invention discloses a process for clean and continuous reduction of metal magnesium. Magnesium oxide and aluminum powder are evenly mixed according to a certain mixing ratio, pressed into agglomerates, added into a vacuum feeding device, and then fed into a reactor by the vacuum feeding device. A reduction reaction occurs in the induction heating zone to produce magnesium vapor and solid reduction slag, and the magnesium vapor is condensed to obtain solid magnesium metal; the reduction slag enters the microwave heating zone for further reaction to form Alcoa spinel products. The technical method of the present invention has high thermal efficiency, low power consumption, fast heating speed and strong controllability; the production process does not generate waste residue and waste gas, the production process is energy-saving and environmentally friendly, reduces the labor intensity of workers under high-temperature conditions, and improves work efficiency. At the same time, it also provides an effective process method for the comprehensive utilization of metal magnesium reduction slag.

Description

technical field [0001] The invention belongs to the field of nonferrous light metal metallurgy, and in particular relates to a clean and continuous reduction process for metallic magnesium. Background technique [0002] Magnesium, as a unique strategic resource and new structural material in my country, will play a greater role in the fields of lightweight transportation, new energy materials, environmental protection industry, consumer electronics, marine engineering, aerospace, military industry support, and military-civilian integration. Among them, the in-depth implementation of the national "Energy Saving and New Energy Automobile Industry Development Plan (2012-2020)" will provide a broad application space for magnesium alloys. At the same time, the rapid development of my country's construction and operation of intercity rail transit will also make magnesium alloy castings, profiles, and plates useful. Especially in the future, China will further increase efforts to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B26/22C22B5/04C01F7/02
CPCC01F7/162C22B5/04C22B26/22
Inventor 李长勇赵秀峰李晗钰李峰
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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