Ceramic tile prepared from waste fly ash and preparation method thereof

Abstract

The invention belongs to the technical field of solid waste environmental protection treatment and building material production, the invention discloses a preparation method of a ceramic tile from waste fly ash, the preparation method comprises: the incineration waste fly ash is mixed with a stabilizer and aged to obtain stabilized fly ash; a composite powder material is prepared from, by weight,25-45% of the stabilized fly ash , 22-55% of a ridge material and 15%-48% of a correcting material by uniformly mixing; the composite powder material is subjected to dry-press molding and natural drying to obtain a to-be-sintered body; and the to-be-sintered body is sintered at a high temperature, and then cooled to obtain the ceramic tile, wherein the stabilizer is roasted hydrotalcite. The method provided by the invention realizes the treatment of fly ash, and harmless and resource utilization of fly ash disposal and utilization are taken into consideration; the dependence on natural resources is reduced from the designed angle of the material, and the fly ash and other solid wastes can be treated and utilized cooperatively, so that harmless and resource synchronization of the bulk solidwaste can be realized.

Description

technical field [0001] The invention relates to the technical fields of solid waste environmental protection disposal and building material production, in particular to a ceramic brick prepared from garbage fly ash and a preparation method thereof. Background technique [0002] The main component of waste incineration fly ash is SiO 2 、Al 2 o 3 , CaO, MgO, Fe 2 o 3 , CuO, K 2 O, Na 2 O, etc., is a useful material that can be utilized as a resource. Through the batching and supporting technology, the resource utilization of waste can be realized, and huge fly ash treatment costs can be saved. For the harmless disposal and resource utilization of fly ash, the current direction of resource utilization of fly ash is mainly the utilization of building materials. By adding a large amount of chemical reagents, clay, industrial waste residue, natural sand, etc., adding water to mix, molding, drying, and sintering at about 1000 ° C to prepare bricks for building materials, th...

AI Technical Summary

Problems solved by technology

However, there is a pursuit of a large amount of fly ash, and the adverse effects of a large amount of calcium oxide in fly ash on the product are not considered; at the same time, it is highly dependent on natural resources, and the compatibility of raw materials is out of touch with the actual production process, especially for sintered products. Compatibility with plastic correction materials may cause cracking or low strength of the product; there is secondary treatment of waste water in wet press molding, especially some inventions do not consider the safety hazards of fly ash to the environment and production personnel, and do not affect the safety of fly ash For pretreatment, although some inventions have done harmless pretreatment on fly ash, the disposal process is complicated, the cost of chemicals is high, and the pretreatment produces secondary wastewater, waste, waste, etc., and the fly ash has not been considered in the entire process design. Safe and efficient control of the whole process of harmlessness and resource utilization