Fecha de publicación: 29/12/2022 Fuente: WIPO "circular economy" The present invention relates to a composition [composition (C), herein-after] suitable for hot repairing refractories, comprising a particulate mixture consisting of at least one first fraction consisting of first particles having a first chemical composition and at least one second fraction consisting of second particles having a second chemical composition, wherein the first fraction has a first d50 particle size value between 0.5 - 10 mm and the at least one second fraction has a second d50 particle size value which is wherein the ratio between the second d50 particle size value of the second fraction and the first d50 particle size value of the first fraction is from 0.05 to 0.95, and wherein the first chemical composition, relative to the total weight of the first chemical composition comprises: - from 20.0 wt.% to 45.0 wt.% of at least one first magnesium oxide compound, as expressed in wt.% of MgO; - from 40.0 wt.% to 60.0 wt.% of at least one calcium oxide compound, as expressed in wt.% of CaO; - from 5.0 wt.% to 12.0 wt.% of at least one iron oxide compound, as expressed in wt.% of Fe2O3, and wherein the second chemical composition comprises at least one second magnesium oxide compound, wherein the total content of the first and the second magnesium oxide compounds in the particulate mixture, relative to the total weight of the particulate mixture is from 30.0 to 80.0 wt.%, as expressed in wt.% of MgO. The invention further relates to methods for manufacturing of the composition (C), and to method for hot-repairing a refractory lining (L) wherein said refractory lining (L) is hot-repaired with the composition (C).