Patent · US Active

Process for manufacturing a slag conditioning agent for steel desulfurization

US11932914B2 · kind B2 · utility

0Cited by

2References

7Claims

0Family size

Assignee

S.A. Lhoist Recherche et Développement · BE

Inventors

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

Key dates

Filing date	Dec 17, 2019
Grant date	Mar 19, 2024
Priority date	—
Expiry date	Sep 20, 2040

Classification

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

Abstract

A process for manufacturing a slag conditioning agent for steel desulfurization is shown 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.