A method for producing ceramsite by embedding and sintering ceramic tile waste as raw material

Abstract

An embedding and sintering method for production of ceramsite from raw material of tile waste belongs the technical field of ceramsite. The method is characterized by comprising the steps of: first formulating raw materials in accordance with the weight: 10-20% of polished waste, 22-32% tile green-pressing waste, 18% of tile edging material, 20% of Laiyang soil, 10% of green coke jewel, 10% of feldspar and 0-0.8% of silicon carbide; adding water and milling for two h; spraying the ground slurry to manufacture raw ceramsite, or manufacturing the powder obtained from drying of the slurry into raw ceramsite; sieving for grading, and mixing the raw ceramsite with embedding filler; sintering at 1170 DEG C for 15 minutes; cooling in the furnace and screening out the embedding filler to obtain the ceramsite using tile waste as raw material. The method uses a large amount of tile wastes; the embedding filler is mixed pellets of magnesia and quartz in a mass ratio of 0:1-0.2:1; the embedding filler after sintering and screening is reusable,; and the obtained ceramsite has good dispersion, uniform particle size and adjustable density.

Description

technical field [0001] A method for producing ceramsite by embedding and sintering waste ceramic tiles as raw materials belongs to the technical field of ceramsite. Background technique [0002] The raw materials in the existing ceramsite technology generally use natural materials such as clay, expanded perlite or argillaceous rock, and the produced ceramsite is widely used in the fields of filling, support column carrier and functional carrier. However, with the increasing scarcity of natural resources, it is increasingly important to develop technologies for the production of ceramsite using mining tailings or industry by-products as raw materials. For example, about 10 million tons of ceramic tile waste are generated in the construction tile industry every year, and about 1.7 million tons. Polished brick waste has excellent foaming performance. For example, patent CN1377859 discloses a method for producing ceramsite using ceramic waste mud produced by a ceramic polished ...

AI Technical Summary

Problems solved by technology

In these ceramsite production technologies, the raw material is rich in SiO 2 and solvent components such as Na 2 O, K 2 O and MgO, etc., when fired at high temperature, the melting reaction on the surface of ceramsite makes the surface of ceramsite smooth, and the fired ceramsite has good fluidity, but it is difficult to control the firing process during firing, and high temperature and long time can guarantee The sintering is sufficient, and the adhesion between ceramsite and ceramsite is easy to occur, resulting in the uneven size distribution of the produced ceramsite, and the surface of the ceramsite is damaged after mechanical sieving, which has an adverse effect on the water absorption, mechanical properties and service performance of the ceramsite.