Content deleted Content added
m →Decarburization: Add hyperlinks to related pages e.g. lime (material), fluorspar, smelting slag, partial pressure |
m Open access bot: url-access updated in citation with #oabot. |
||
| (4 intermediate revisions by 3 users not shown) | |||
Line 3:
'''Argonoxygen decarburization''' ('''AOD''') is a process primarily used in [[stainless steel]] [[steel making|making]] and other high grade alloys with oxidizable elements such as [[chromium]] and [[aluminium]]. After initial melting the metal is then transferred to an AOD vessel where it will be subjected to three steps of refining; [[decarburization]], [[Reduction (chemistry)|reduction]], and [[desulfurization]].
The AOD process was invented in 1954 by the Lindé Division of The [[Union Carbide Corporation]]<ref name=krivsky73>{{cite journal | doi = 10.1007/BF02667991| bibcode = 1973MT......4.1439K| title = The linde argon-oxygen process for stainless steel; A case study of major innovation in a basic industry| journal = Metallurgical Transactions| volume = 4| issue = 6| pages = 1439–1447| last1 = Krivsky| first1 = W. A.| year = 1973| s2cid = 135951136|url=https://link.springer.com/article/10.1007/BF02667991| url-access = subscription}}</ref><ref name=jalkanen14>{{cite journal |last1=Jalkanen |first1=Heikki |last2=Holappa |first2=Lauri |editor1-last=Seetharaman |editor1-first=Seshadri |title=Converter Steelmaking |journal=Treatise on Process Metallurgy: Industrial Processes |date=2014 |doi=10.1016/C2010-0-67121-5 |publisher=Elsevier|isbn=9780080969886 }}</ref> (which became known as [[Praxair]] in 1992).<ref name=uchist>[http://www.unioncarbide.com/History History] {{Webarchive|url=https://web.archive.org/web/20170609104241/http://www.unioncarbide.com/history |date=2017-06-09 }}. Unioncarbide.com (1917-11-01). Retrieved on 2013-12-28.</ref>
==Process==
Line 53:
=== Carbon Capture and Utilization ===
AOD slag has shown promising potential for usage as a carbon-capture construction material due to its high capacity for
=== Cementitious Activity and Modifiers ===
AOD slag exhibits cementitious activity, but its properties can be changed by modifiers. Studies have focused on the impact of modifiers, such as B2O3 and P2O5 on preventing the crystal transition of β-C2S and improving the cementitious activity of the slag. Addition of B2O3 and P2O5 has shown curing effects and increased compressive strength. These findings suggest that proper selection of modifiers can enhance the performance of stainless steel slag in cementitious applications.<ref>{{cite journal |last1=Baciocchi
=== Chromium Leachability and Carbonation ===
Another aspect of AOD slag research is its carbonation potential and its impact on chromium leachability. Carbonation of the dicalcium silicate in AOD slag leads to the formation of various compounds, including amorphous calcium carbonate, crystalline calcite, and silica gel. The carbonation ratio of the slag affects the mineral phases, which subsequently influence chromium leachability. Optimal carbonation ratios have been identified to minimize chromium leaching risks during carbonation-related production activities.<ref>{{cite journal |last1=Wang
== References ==
| |||