Patent · US Active

Process for manufacturing a slag conditioning agent for steel desulfurization

US12378619B2 · kind B2 · utility

0Cited by

2References

4Claims

0Family size

Assignee

S.A. Lhoist Recherche et Développement · BE

Inventors

Eric Perrin · Metz, FR
Souliyann Chunlamani · Brussels, BE

Key dates

Filing date	Feb 7, 2024
Grant date	Aug 5, 2025
Priority date	—
Expiry date	Feb 7, 2044

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A slag conditioning agent for steel desulfurization is shown which is made by a process in which a dried slag material obtained from a secondary steelmaking process is mixed with quicklime particles. The quicklime particles react with moisture in the slag material to dry the slag material and produce a blend of slag material, hydrated lime and any unreacted quicklime. The blend is then sieved to separate out the hydrated lime. The retained dried fraction after sieving is then mixed with an Al2O3 mass fraction from which the slag conditioning agent can be collected. The slag conditioning agent has an equivalent mass ratio which is between 0.55 and 1.5.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.