Back to results
US 11,667,989 B2Granted
Metallic ore pellets
AssigneeS. A. Lhoist Recherche et Developpement
InventorsEduardo Da Costa, Marc Pelletier
Life of this patent
Estimating the term…
Abstract
The present invention concerns the use of a magnesium-including compound as binder for producing metallic ore fluxed pellets, in particular iron ore fluxed pellets, said magnesium-including compound comprising semi-hydrated dolime fitting the general formula aCa(OH)2·bMg(OH)2·cMgO, a, b, and c being weight fractions wherein the weight fraction b of Mg(OH)2 is between 0.5 and 19.5 % by weight with respect to the total weight of said semi-hydrated dolime.
Claims8
A process for manufacturing metallic ore fluxed pellets, comprising the steps of:
- feeding a fine metallic ore concentrate into a container, wherein said fine metallic ore concentrate presents a Blaine fineness comprised between 1500 cm2/g and 2500 cm2/g;
- feeding a binder in said container;
- adjusting moisture in said container to form a wet mixture;
- balling and sieving said wet mixture into crude metallic ore fluxed pellets;
- wherein said binder is a compound which includes magnesium, the compound comprising a semi-hydrated dolime fitting the general formula aCa(OH)2·bMg(OH)2·cMgO, a, b and c being weight fractions wherein the weight fraction b of Mg(OH)2 is between 0.5 and 19.5% by weight with respect to the total weight of said semi-hydrated dolime.
2 more elements
Dependencies are inferred from the claim text.