Method for producing porous water-collecting sponge brick by using filter type activated carbon steel slag

The invention provides a method for producing a porous water-collecting sponge brick by using filter type activated carbon steel slag. The method comprises the following steps of sampling ingredients of the porous water-collecting sponge brick according to the proportions: 10 to 20 weight percent of cement, 45 to 65 weight percent of steel slag opened hollow microbeads with the particle size of 100 to 250mu.m, 5 to 15 weight percent of sodium silicate with the modulus of 3.2 to 3.5, 3 to 10 weight percent of fly ash with the ignition loss of 1.1 percent, 0.5 to 3.0 weight percent of polyvinyl alcohol high water-absorbent resin fiber and 10 to 30 weight percent of activated carbon with the particle size of 100 to 150mu.m, and uniformly mixing the ingredients; pulping the mixed ingredients according to the water-cement ratio of 0.5 to 0.7; then adding aluminum powder paste which accounts for 0.2 to 1.0 percent of total weight of the mixed ingredients; performing hydration reaction on the aluminum powder paste t