Low-carbon granulated metallic units
A low-carbon granulated metallic unit having a mass fraction of carbon between 0.1 wt. % and 4.0 wt. % is disclosed herein. Additionally or alternatively, the granulated metallic unit can comprise a mass fraction of phosphorous of at least 0.025 wt. %, a mass fraction of silicon between 0.25 wt. % and 1.5 wt. %, a mass fraction of manganese of at least 0.2 wt. %, a mass fraction of sulfur of at least 0.0001 wt. %, and/or a mass fraction of iron of at least 94.0 wt. %.
1. A plurality of granulated metallic units, individual granulated metallic units comprising:
a mass fraction of phosphorous of at least 0.025 wt. %;
a mass fraction of silicon between 0.25 wt. % and 1.5 wt. %;
a mass fraction of manganese of at least 0.2 wt. %;
a mass fraction of carbon between 0.1 wt. % and 4.0 wt. %;
a mass fraction of sulfur of at least 0.0001 wt. %; and
a mass fraction of iron of at least 94.0 wt. %,
wherein the plurality of granulated metallic units has a size distribution such that at least 50 wt. % of the plurality of granulated metallic units is at least 6 millimeters, and
wherein the plurality of granulated metallic units has a melting point between 1100° C. and 1600° C.
2. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of carbon is between 0.1 wt. % and 3.0 wt. %.
3. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of carbon is between 0.1 wt. % and 2.0 wt. %.
4. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of carbon is between 0.1 wt. % and 1.0 wt. % and the plurality of granulated metallic units is granulated steel.
5. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of sulfur is between 0.0001 wt. % and 0.08 wt. %.
6. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of carbon is between 0.1 wt. % and 4.0 wt. % and the mass fraction of sulfur is between 0.0001 wt. % and 0.01 wt. %.
7. The plurality of granulated metallic units of claim 1 , wherein the plurality of granulated metallic units is a plurality of granulated pig irons.
8. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of phosphorous is between 0.025 wt. % and 0.085 wt. %.
9. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of silicon is between 0.25 wt. % and 0.75 wt. %.
10. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of manganese is between 0.2 wt. % and 0.4 wt. %.
11. The plurality of granulated metallic units of claim 1 , wherein the mass fraction of iron is between 94.0 wt. % and 96.0 wt. %.
12. The plurality of granulated metallic units of claim 1 , wherein an average particle size of the plurality of granulated metallic units is between 6 and 25 millimeters.
13. The plurality of granulated metallic units of claim 1 , wherein the size distribution is such that at least 50 wt. % of the plurality of granulated metallic units is between 6 and 12 millimeters.
14. The plurality of granulated metallic units of claim 1 , wherein the size distribution is such that at most 2.5 wt. % of the plurality of granulated metallic units is less than 4 millimeters.
15. The plurality of granulated metallic units of claim 1 , wherein the size distribution is such that:
at most 0.41 wt. % of the plurality of granulated metallic units is less than 2 millimeters;
at most 1.31 wt. % of the plurality of granulated metallic units is between 2 and 4 millimeters;
at most 7.24 wt. % of the plurality of granulated metallic units is between 4 and 6 millimeters;
at most 7.53 wt. % of the plurality of granulated metallic units is between 6 and 8 millimeters;
at least 53.46 wt. % of the plurality of granulated metallic units is between 8 and 12 millimeters;
at least 18.79 wt. % of the plurality of granulated metallic units is between 12 and 16 millimeters;
at least 10.92 wt. % of the plurality of granulated metallic units is between 16 and 25 millimeters; and
at least 0.07 wt. % of the plurality of granulated metallic units is more than 25 millimeters.
16. The plurality of granulated metallic units of claim 1 , wherein a bulk density of the plurality of granulated metallic units is between 250 and 500 pounds per cubic foot.
17. The plurality of granulated metallic units of claim 1 , wherein a specific gravity of the plurality of granulated metallic units is between 5.0 and 6.5.
18. The plurality of granulated metallic units of claim 1 , wherein the plurality of granulated metallic units is produced at a production rate of at least 1000 tons per day.
19. A plurality of granulated metallic units, individual granulated metallic units comprising:
a mass fraction of phosphorous of at least 0.025 wt. %;
a mass fraction of silicon between 0.25 wt. % and 1.5 wt. %;
a mass fraction of manganese of at least 0.2 wt. %;
a mass fraction of carbon between 0.1 wt. % and 4.0 wt. %;
a mass fraction of sulfur of at least 0.0001 wt. %; and
a mass fraction of iron of at least 94.0 wt. %,
wherein the plurality of granulated metallic units has a size distribution such that at least 50 wt. % of the plurality of granulated metallic units is at least 6 millimeters, and
wherein a bulk density of the plurality of granulated metallic units is between 250 and 500 pounds per cubic foot.
20. A plurality of granulated metallic units, individual granulated metallic units comprising:
a mass fraction of phosphorous of at least 0.025 wt. %;
a mass fraction of silicon between 0.25 wt. % and 1.5 wt. %;
a mass fraction of manganese of at least 0.2 wt. %;
a mass fraction of carbon between 0.1 wt. % and 4.0 wt. %;
a mass fraction of sulfur of at least 0.0001 wt. %; and
a mass fraction of iron of at least 94.0 wt. %,
wherein the plurality of granulated metallic units has a size distribution such that at least 50 wt % of the plurality of granulated metallic units is at least 6 millimeters, and
wherein a specific gravity of the plurality of granulated metallic units is between 5.0 and 6.5.