A method of adding tile waste and firing it into foamed red mud tiles in a roller kiln

Abstract

The invention relates to a method for adding ceramic tile wastes and burning them into foamed red mud tiles through a roller kiln, which belongs to the technical field of building ceramic production. Its characteristic is to prepare raw materials containing 10-25% of red mud, 5-15% of polished brick waste, 15% of green tile waste, 10-40% of tile edging material, 15% of kaolin, 15-40% of quartz, and add water ball mill After 2 hours, use the ground slurry to spray granulate or crush the dried powder to granulate, mold it under 200MPa, and burn it in a roller kiln at 1170ºC. The firing cycle is 70 minutes, and you can get ceramic tiles. Foamed red mud tiles produced from waste materials. The roller kiln has high production efficiency, and the fired foamed red mud tiles have small deformation, low water absorption, and the density and strength can be easily adjusted.

Description

technical field [0001] The invention relates to a method for adding ceramic tile wastes and burning them into foamed red mud tiles through a roller kiln, which belongs to the technical field of building ceramic production. Background technique [0002] Red mud is a by-product of alumina production in the aluminum industry, and 1 to 2 kg of red mud can be produced for every 1 kg of alumina produced. As the third largest country in the world in terms of aluminum production, my country produces 10 million tons of red mud waste every year. The amount of tile waste is also very large, and the amount of tile waste generated every year is as high as 10 million tons. Research on the recycling of red mud and ceramic tile waste has been carried out, but the development is slow. Most of the waste is still disposed of in open piles, which has adverse effects on soil, water resources and air environment. [0003] Because of its low density, low thermal conductivity and high mechanical ...

AI Technical Summary

Problems solved by technology

When the traditional roller kiln is used for continuous production, the tile body is too soft in the high-temperature firing section, and the phenomenon of ceramic tile wrapping the sintering roller will occur, which poses a great challenge to production safety.

However, when pallets (such as heat-resistant stainless steel molds, etc.) are used to support auxiliary sintering, the firing process and production process will become complicated, and the production cost of roller kiln will be greatly increased.