Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
steelmaking process
|
| gptkbp:alsoKnownAs |
gptkb:Siemens-Martin_process
|
| gptkbp:category |
metallurgy
industrial processes |
| gptkbp:declinedAfter |
mid-20th century
|
| gptkbp:developedBy |
gptkb:Pierre-Émile_Martin
|
| gptkbp:environmentalImpact |
gptkb:air_pollution
high energy consumption |
| gptkbp:fuelType |
gptkb:oil
natural gas coal gas |
| https://www.w3.org/2000/01/rdf-schema#label |
open-hearth process
|
| gptkbp:introducedIn |
1860s
|
| gptkbp:inventedBy |
gptkb:Carl_Wilhelm_Siemens
|
| gptkbp:lastMajorUse |
1980s
|
| gptkbp:material |
gptkb:iron_ore
pig iron scrap steel |
| gptkbp:notableFeature |
slow process
allows precise control of composition |
| gptkbp:operatingSystem |
about 1600°C
|
| gptkbp:output |
gptkb:steel
|
| gptkbp:primaryUse |
20th century
|
| gptkbp:replacedBy |
gptkb:basic_oxygen_process
gptkb:electric_arc_furnace |
| gptkbp:usedFor |
steel production
|
| gptkbp:bfsParent |
gptkb:Bessemer_steel_process
|
| gptkbp:bfsLayer |
7
|