[Tagging] Direct reduced iron plants

[_ _]

Hi Daniel !

The third seems to me the best solution if there isn't already a tag. This
will allow you to add information rather than modify existing ones.

I'd like to point out that there's also another way of tagging steel mills:
man_made=works + product=steel wich is way more common (260 times while
industrial=steel_mill is used 70 times)

Have a nice day !
Romain

Le jeu. 25 avr. 2024 à 23:14, Daniel Evans <daniel.fred.evans at gmail.com> a
écrit :

> Hi all,
>
> In the steel industry, a process which has started gaining adoption in
> recent years is the production of steel from Direct Reduced Iron (DRI),
> rather than from pig iron produced from iron ore in a blast furnace.
>
> To give context, the two existing widespread methods of steel production
> are:
> * Blast Furnace + Basic Oxygen Furnace (BOF), where the blast furnace
> produces pig iron from iron ore, and the BOF refines it into steel
> * Electric Arc Furnace (EAF), where scrap steel and/or pig iron is refined
> into steel
>
> In contrast to this existing arrangement where the inputs are converted to
> steel within a single facility, a number of DRI facilities have been built
> independently of existing steel mills (often supplying EAF facilities). The
> solid pig iron is then transported to steel mills for further processing,
> either within a single company's range of sites, or sold on the open market
> to steel producers.
>
> For the time being, DRI plants remain less common, but most large
> steelmakers are investing in the technology for decarbonisation and cost
> reasons.
>
> How should DRI plants be tagged? I can see three options:
>
> 1. DRI plants receive a separate `industrial=???` tag to differentiate
> them from steel mills, because of the technical argument that they do not
> produce steel, only pig iron, the precursor to steel.
>
> 2. DRI plants are tagged as `industrial=steel_mill` with no
> differentiation from normal mills, because they're very closely associated
> with steelmaking. Additionally, OSM currently has very minimal industrial
> tagging (both in terms of the accepted tags, and how many sites are
> tagged), and so a special tag for such a small number of sites isn't worth
> it yet.
>
> 3. A new tag such as `steel_mill:process` is introduced to differentiate
> between different steel mills, with values along the lines of `integrated`
> (blast furnace+BOF), `basic_oxygen`, `electric_arc`, and
> `direct_reduction`. It is easy to determine what value is appropriate to a
> plant based on aerial photos or public information.
>
> An example of an independently located DRI plant is Cleveland-Cliff's
> Toledo plant: https://www.openstreetmap.org/way/758332131
> And US Steel is reportedly investing in DRI facilities at its iron ore
> mines:
> https://gmk.center/en/news/us-steel-completes-pilot-project-in-minnesota-to-produce-dr-pellets/
>
> Cheers,
> Daniel
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>


-- 
Romain
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