Baking-free bricks prepared from casting waste residues through recycling

Abstract

The invention discloses baking-free bricks prepared from casting waste residues through recycling. The baking-free bricks are prepared from the following components: gel materials, fly ash, calcium phosphate, coal gangue, clay, dibutyl phthalate, calcium carbonate powder, bauxite, the casting waste residues and a proper amount of water. According to the baking-free bricks, the clay and the bauxite are blended and combined with the added casting waste residues and gel materials, so that while the strength of the baking-free bricks is guaranteed and improved, the admixing amount of other aggregate is reduced, exploitation of mineral resources is reduced, the cost of the baking-free bricks is reduced, the production process is simple, and the cost is low; by means of the cooperativity effect of the materials, the prepared baking-free bricks have high strength, low thermal conductivity coefficient and quite good anti-crack effect, are energy-saving and environment-friendly, meet demands of constructional engineering and meet the environment-friendly requirement; due to the recycling of the casting waste residues, environmental pollution is reduced, and the ecological environment is protected; a preparation method is simple, working time is shortened, energy is saved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of preparation of burn-free bricks, in particular to burn-free bricks prepared by recycling foundry waste slag. Background technique [0002] With the increasing pressure on my country's resources and the environment, the government has promptly put forward the requirements of "realizing sustainable development and building a resource-saving and environment-friendly society"; The goal of reducing energy consumption by 20% and reducing the total discharge of major pollutants by 10%; and decided to set off a new round of "energy saving and emission reduction" in the country in 2007. ways to improve economic efficiency. The main waste produced in the production process of ferroalloy castings is waste sand, waste slag, dust and waste gas. Foundry waste slag is an inevitable product in the cupola melting process. According to statistics, for every 1 ton of qualified castings produced, about 300kg of waste slag will be disc...

AI Technical Summary

Problems solved by technology

Foundry waste slag is an inevitable product in the cupola melting process. According to statistics, for every 1 ton of qualified castings produced, about 300kg of waste slag will be discharged. The national foundry industry produces a total of 6 million tons of waste slag every year. If it cannot be recycled, it will The environment has caused great damage; the existing unburned brick production needs to consume a lot of materials, which puts great pressure on various resources