Production method for refractory brick for tuyere area in bottom-blowing furnace

The invention discloses a production method for a refractory brick for tuyere area in a bottom-blowing furnace, and different grain sizes of dense corundum particles, white corundum particles, chrome corundum particles, electrically melted chromium oxide particles, white corundum/chrome corundum fine powder, electrically melted chromium oxide fine powder, alumina powder and desilicication zirconia, with the addition of binding clays and binding agents are compounded in a certain proportion, and then are sintered into the refractory brick; The refractory brick has the advantages that essential minerals of a sintered refractory brick are continuous solid solution of alpha-Al2O3-Cr2O3-ZrO2 and a bit of spinel compounds, 15 to 25 percent of chromic oxide is contained, and besides, the continuous solid solution of alpha-Al2O3-Cr2O3-ZrO2 has obvious erosion resistance for acid materials in minerals and better adapts to acid environment of the bottom-blowing furnace; the refractory brick has high temperature property and good thermal shock resistance, high corrosion and infiltration resistibility for molten metal and high erosion resistibility, if the refractory bricks are used in the serious scoured and eroded areas of nonferrous metallurgy tuyere area in bottom-blowing furnaces, the service life can be prolonged to 30 to 60 days.