Method for preparing a molding material mixture, wherein the molding material mixture is prepared by bringing together at least three of the following components, each of which is provided separate from each another: • component comprising at least a refractory basic molding material and no water glass in the form of an aqueous solution of alkali silicates; • component comprising at least a water glass in the form of an aqueous solution of alkali silicates as inorganic binder wherein the water glass has a [SiO 2] / [M 2 O] molar ratio of 1.90 to 2.47 and does not comprise particulate amorphous SiO 2 and • component comprising at least particulate amorphous SiO 2 as an additive component and no water glass in the form of an aqueous solution of alkali silicates, wherein the components and together have a [Li 2 O active] / [M 2 O] molar ratio of 0.03 to 0.17 wherein [M 2 O] is the amount of substance in mol of alkali metal M, calculated as M 2 O, wherein ultimately only the following compounds enter into the calculation: amorphous alkali silicates, alkali metal oxides and alkali metal hydroxides, including the hydrates thereof, wherein Li is included as part of M without an activity factor, [Li 2 O active] is the amount of substance in mol Li, calculated as Li 2 O, wherein ultimately only the following compounds enter into the calculation: amorphous lithium silicates, lithium oxides and lithium hydroxide, including the hydrates thereof, [SiO 2] is the amount of substance in mol Si, calculated as SiO 2, wherein ultimately only the following compounds enter into the calculation: amorphous alkali silicates, wherein an activity factor enters into the calculation of the molar amount of [Li 2 O active] as follows: [Li 2 O active] = 1 * amorphous lithium silicates, which are added as constituents of the inorganic binder component, calculated as mol Li 2 O, + 1 * lithium oxide, which is added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 1 * lithium hydroxide, which is added as a constituent of the inorganic binder component, calculated as mol Li 2 O + 0.33 * amorphous lithium silicates, which are not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 0.33 * lithium oxide, which is not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 0.33 * lithium hydroxide, which is not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, in each case including the hydrates thereof, wherein the component comprises LiO 2, LiOH and/or amorphous lithium silicate. • component comprising at least a refractory basic molding material and no water glass in the form of an aqueous solution of alkali silicates; • component comprising at least a water glass in the form of an aqueous solution of alkali silicates as inorganic binder wherein the water glass has a [SiO 2] / [M 2 O] molar ratio of 1.90 to 2.47 and does not comprise particulate amorphous SiO 2 and • component comprising at least particulate amorphous SiO 2 as an additive component and no water glass in the form of an aqueous solution of alkali silicates, [M 2 O] is the amount of substance in mol of alkali metal M, calculated as M 2 O, wherein ultimately only the following compounds enter into the calculation: amorphous alkali silicates, alkali metal oxides and alkali metal hydroxides, including the hydrates thereof, wherein Li is included as part of M without an activity factor, [Li 2 O active] is the amount of substance in mol Li, calculated as Li 2 O, wherein ultimately only the following compounds enter into the calculation: amorphous lithium silicates, lithium oxides and lithium hydroxide, including the hydrates thereof, [SiO 2] is the amount of substance in mol Si, calculated as SiO 2, wherein ultimately only the following compounds enter into the calculation: amorphous alkali silicates, [Li 2 O active] = 1 * amorphous lithium silicates, which are added as constituents of the inorganic binder component, calculated as mol Li 2 O, + 1 * lithium oxide, which is added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 1 * lithium hydroxide, which is added as a constituent of the inorganic binder component, calculated as mol Li 2 O + 0.33 * amorphous lithium silicates, which are not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 0.33 * lithium oxide, which is not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, + 0.33 * lithium hydroxide, which is not added as a constituent of the inorganic binder component, calculated as mol Li 2 O, in each case including the hydrates thereof,