METHOD FOR PRODUCING magnesian modifiers and magnesian MODIFIER

摘要

The invention relates to the field of metallurgy, in particular to the modifier (flux) composition and a method for producing thereof, and can be used for applying a slag scull (protective layer) on the lining of metallurgical units and induction of the slag (modification) during smelting. A method for producing a magnesia modifier comprises mixing products containing a magnesium compounds and/or carbon component forming gaseous agent while heating, which is calcined in a rotary and/or shaft furnace, magnesia components and binding materials, mixed starting components are briquetted or pelletized, at that at the stage of mixing the unfired calcium component is additionally introduced to the charge, and at least one of the fired magnesia components are introduced as a fraction of less than , for this purpose one of the fired components is wholly or partially milled or it is trapped in the suction units of firing systems. Briquettes or pellets are dried. The invention provides an increased resistance of the refractory lining of metallurgical units, increases the degree of purification of steel or cast iron, at their melting with the use of the said modifier due to the increasing of its rate of dissolution in the slag.