250cea57-e3c1-40e2-81c1-839e52181aa8Magnesium production, electrolysisMaterials productionMetals and semimetalsIn this process, magnesium is produced via electrolysis. The data represent the state of a specific plant located in Israel.
For documentation please refer to Ehrenberger, S. et al: Life Cycle Assessment of Magnesium Components in Vehicle Construction, 2013
http://elib.dlr.de/87332/1/2013-12_IMA_LCA-Study_Report_Part-I-and-II_incl-summary.pdf11Electrochemical processes to make magnesium are based on salts containing chloride which can be found naturally or are transformed from other raw materials like serpentine, magnesite, bischofite or carnallite. The magnesium chloride salts are dried with various processes in order to
receive anhydrous MgCl2.
The raw material for magnesium production in this activity is an anhydrous carnallite (MgCl2-KCl). In the process, KCl represents the electrolyte. In the course of the MgCl2 decomposition, the KCl content increases until the (spent) electrolyte is partly pumped out and replaced with new carnallite. Finally, two by-products are produced: liquefied chlorine (Cl2) and KCl-rich salt (70% KCl).
Magnesium oxide (MgO) is formed as an impurity during dehydration. Concerning the CO2/CO equilibrium in the calcination process, there are numerous reactions that take place in the chlorination chambers and the carbon can be consumed by reaction with MgO, air, water, sulfates and other impurities. Theoretically, the predominant reactions are those in which carbon dioxide is formed. Thus, it is assumed that the carbon is entirely converted to CO2. The CO2 emissions from graphite anode consumption are expected to contribute less than 1 % of the overall emissions and are neglected in the module. In practice, the off gases are not released to the atmosphere as is, as they are treated in wet alkali scrubbers. That is that some of the CO2 (be it from the reaction or from the ambient dilution air) is converted to calcium carbonate. The input of petroleum coke contributes less than 1 % to the overall GWP results and is excluded from this datasets for reasons of confidentiality.Unit process, single operationAttributionalnoneEhrenberger, S. et al: Life Cycle Assessment of Magnesium Components in Vehicle Construction, 201395.0UndefinedNo statementDLR, Institute of Vehicle Concepts2018-02-01T00:00:00.000ILCD format 1.1thinkstep2018-02-01T00:00:00.00000.00.001Data set finalised; entirely publishedDLR, Institute of Vehicle ConceptstrueFree of charge for all users and usesGaBi (source code, database including extension modules and single data sets, documentation) remains property of thinkstep AG. thinkstep AG delivers GaBi licenses comprising data storage medium and manual as ordered by the customer. The license guarantees the right of use for one installation of GaBi. Further installations using the same license are not permitted. Additional licenses are only valid if the licensee holds at least one main license. Licenses are not transferable and must only be used within the licensee's organisation. Data sets may be copied for internal use. The number of copies is restricted to the number of licenses of the software system GaBi the licensee owns. The right of use is exclusively valid for the licensee. All rights reserved.MagnesiumOutput1.01.00Mixed primary / secondaryEstimated