The invention discloses a maintenance method for an iron notch of a European
smelting furnace. The method comprises the following operation steps that 1) a water-free
stemming iron plugging port withgood quick-
drying and quick-hardening performance is selected, and 1-2% of
silicon nitride and 2-3% of aluminum micropowder are added into
stemming, the
slag iron scouring resistance of the
stemming is improved,
sintering of stemming in a duct is accelerated in a mode of pre-opening of the iron notch and baking and temperature raising of an iron notch channel, the
slag iron scouring resistance ofthe stemming is further improved, and the iron tapping amount of a single furnace is controlled below 450 tons / furnace by controlling the iron tapping interval time; 2) an
oxygen supply parameter above the iron notch is controlled, and
oxygen supply at an air port above the iron notch is stopped; 3) tapping time is controlled to tap clean
slag iron as much as possible; and 4) sectional mud beatingis carried out, wherein the first section is only used as a channel for sealing the iron notch, after 10 seconds of stopping, after half
coke and
coke in a cavity at the front end of the iron notch settle down, a second section of stemming starts to be beaten to form an initial stemming bag, then after 10 seconds of stopping, a third section is beaten, and all the stemming is beaten in sequence in four sections, wherein the beating amount of each section is 40 L, and it is ensured that the beaten-in stemming forms a stable stemming bag in a furnace cylinder.