Antique brick prepared by utilizing foundry waste sand and preparation method of antique brick

Abstract

The invention discloses an antique brick prepared by utilizing foundry waste sand and a preparation method of the antique brick, and belongs to the technical field of solid waste resource utilization.The antique brick is composed of the following raw materials, in parts by mass: 40-50 parts of the foundry waste sand, 20-30 parts of rubble, 20-25 parts of fly ash, 0-2 parts of a coloring agent, and 10-15 parts of a binding agent. The antique brick is prepared by the following steps: 1) putting the foundry waste sand and the rubble into a ball mill, performing grinding, and performing spray drying to form powder for standby application; 2) mixing the raw materials according to the ratio, adding an appropriate amount of water, and performing uniform stirring; 3) putting the mixed material into a mold, and performing press molding by adopting a pressing machine; and 4) after press molding is finished, performing demolding, and performing drying. The method provided by the invention has asimple production process; the foundry waste sand is recycled, so that the costs are reduced, pollution of the foundry waste sand to the environment is effectively prevented, energy is saved, the environment is protected, and the method is easy to promote.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, and in particular relates to an antique brick manufactured by using foundry waste sand and a preparation method thereof. Background technique [0002] In order to adapt to the development of my country's equipment manufacturing industry and the demand of the international market, the total output of castings will show an increasing trend. It is estimated that the total output of castings will reach about 55 million tons in 2020. According to empirical calculations, the amount of various raw sand (powder) consumed per ton of qualified castings, including silica sand (powder), coated sand, pearl sand and special sand, is 1.2 times the quality of the casting, that is, 66 million tons. At present, the utilization rate of foundry waste sand in my country is only 30%-40% (data source: 2016 edition of "China Foundry Yearbook"). Therefore, the resource utilization of foundry w...

AI Technical Summary

Problems solved by technology

At present, many places in China are carrying out the construction of characteristic towns and ancient towns and villages, which require a large amount of antique materials, and the country strictly prohibits the firing of clay bricks. The development of clay will cause damage to the soil and affect the environment.