Method for preparing ceramic material utilizing magnetic separation tail sludge from steel slag wet process
2012
The invention discloses a method for preparing a ceramic material utilizing magnetic separation tail sludge from a steel slag wet process, and belongs to the fields of source comprehensive utilization and environmental protection. The mass percent of a tail sludge drier (converted into dry basis) is 5%-68% of the mixed raw material drier (converted into dry basis); and the mass percent of various component driers in the corresponding ingredients is as follows: 15-35% of clay, 3-25% of feldspar, 5-30% of pyrauxite, and 0.1-8% of quartz and on the like. The preparation method comprises the following steps: the wet tail sludge and the corresponding ingredients are added in a bal mill to be milled uniformly; then the mixed materials are dried, pelletized and pressed to mold, or the mixed materials are extruded and molded; and further, the molded materials are placed in a kiln and fired at 1100-1250 DEG C to obtain the ceramic product. By virtue of a deep iron selection process of steel works, the tail sludge slurry with granularity, iron content and water content meeting the requirements of ceramic raw material is obtained, so that the high power consumption and low efficiency of metallurgic slag utilized for the traditional ceramic preparation are reduced.
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