Cradle to Gate
Identity ID
31ef7ef8-ea41-4e7a-bab7-ff16b8470c4d
Materials
Associated ID
8f986a95-8a98-49b8-9eba-adcf60180f77
Included activities starts
Included activities ends
Description
This dataset represents a product that is metallic magnesium, a lightweight silvery-white metal with distinctive core physicochemical characteristics: a density of only approximately 1.74 g/cm³, making it one of the lightest among structural metals; a melting point of approximately 650℃ and a boiling point of 1090℃, with good plasticity but relatively limited ductility at room temperature, and a tendency to undergo oxidation reactions. It also has advantages such as low density, high specific strength, excellent thermal and electrical conductivity and outstanding vibration-damping performance, giving it prominent application value. This metallic magnesium is prepared via a magnesium-electrolysis production process; its upstream core raw material is magnesium chloride, and the downstream can be widely used in alloy manufacturing, structural-material production and various chemical reactions, specifically applied in automotive, aerospace, electronics, metallurgy and other industrial fields; it is a key material for lightweight manufacturing and high-end industrial fields. The dataset includes the main raw and auxiliary materials, energy and wastes in the production process; infrastructure such as the manufacture of production equipment and plant construction is not included within the boundary of the dataset; the data inventory is formed by merging data from multiple sources.
Activity Description
The entire production process adopts multipolar magnesium electrolytic cell electrolysis technology. The process mainly includes two stages: molten salt preparation and electrolysis reaction. The entire process covers the process from magnesium chloride to metal magnesium.
Process Description
Magnesium metal is a lightweight silver-white metal with a density of only about 1.74 g/cm³. It is one of the lightest metals among structural metals and has the characteristics of low density, high specific strength, good thermal and electrical conductivity, and excellent vibration damping performance. Its melting point is about 650°C and boiling point is 1090°C. It has good plasticity but relatively limited ductility at room temperature and is susceptible to oxidation. It can be used in alloy manufacturing, structural materials and chemical reactions, and is widely used in automobiles, aerospace, electronics, metallurgy and other industrial fields.
Time period
2021
2026
Geography
China
Geography comment
Generated by merging multiple data sets in this geographical location.
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Using multipolar magnesium electrolytic cell electrolysis technology, the process mainly includes two stages: molten salt preparation and electrolysis reaction. First, the dehydrated and refined magnesium chloride molten salt is added to the electrolytic tank and heated to a suitable electrolysis temperature. Subsequently, electrolysis is performed under a multi-polar electrode structure. The magnesium ions in the molten salt are precipitated at the cathode to form metallic magnesium, and the chloride ions are discharged at the anode to generate chlorine gas. Finally, the generated magnesium liquid automatically floats due to its low density and is regularly drawn out for collection and sent for further purification. The chlorine gas is centrally recovered through the export system and used for chloride regeneration.
Multipolar magnesium electrolyzers have the following advantages: the electrolysis chamber is compact and the cell has a large production capacity per unit area, which is about three times that of a unipolar magnesium electrolyzer without separators. Low power consumption (DC power consumption 9500~11000kWh/t-Mg). The electrolytic cell is fully sealed, with good environmental and sanitary conditions. There is no exhaust from the magnesium collecting chamber. The chlorine recovery volume is greater than that of the unipolar magnesium electrolytic cell without partitions, and the chlorine concentration is greater than that of the advanced large-scale magnesium electrolytic cells without partitions. The tank current intensity is small, which can reduce the investment in rectifier equipment.