Method for preparing high-strength carbonized paving brick based on industrial waste residue-waste water-waste gas synergy

Abstract

The invention particularly relates to a method for preparing a high-strength carbonized paving brick based on industrial waste residue-waste water-waste gas synergy, aims to solve the problems of waste residue-waste water-waste gas generated in industrial production and the performance of the paving brick in the urban road construction process, and belongs to the technical field of civil engineering and environmental engineering. The carbonized paving brick is prepared from the following raw materials in parts by weight: 15-40% of industrial waste residue powder, 60-85% of industrial waste residue carbonized reinforcing material and 5-10% of an additive, and the mass ratio of the industrial waste water to the industrial waste residue powder is 0.2-0.5. The preparation method comprises the following steps: mixing and stirring the raw materials, pressing into a green brick, curing at normal temperature for 8 hours, and carbonizing in a carbonization box for 2-5 hours to obtain the high-strength carbonized paving brick. The paving brick has the advantages of short manufacturing time, low energy consumption, waste utilization, environmental protection, high finished product strength and good water permeability, and meets the market demand.

Description

technical field [0001] The invention relates to the technical field of civil engineering and environmental engineering, in particular to a method for synergistically preparing high-strength carbonized paving bricks based on industrial waste residue-waste water-waste gas. Background technique [0002] At present, in my country's urban construction, natural stone, bright brick, cement, asphalt and other rigid hardened materials with poor water permeability are often used to lay urban ground, and it is prone to slippery, waterlogged, and even local floods in rainy days. [0003] On the other hand, with the rapid development of China's industrialization, a large amount of industrial waste residues are produced in the production process. The accumulation of these industrial waste residues not only occupies a large amount of valuable land resources, but also brings great harm to the local soil, air and water environment. Great harm. Industrial waste slag contains a large amount o...

AI Technical Summary

Problems solved by technology

[0004] Traditional paving bricks more or less use cement as raw material and are made by firing, which consumes a lot of energy, takes a long time to make, and causes serious environmental pollution.

For example, the invention patent CN103011768A discloses a method for burning paving bricks by using urban sludge as a resource. Although part of the cement is replaced by sludge, the amount of cement is reduced, but the bricks are made by the firing process, which takes a long time to burn bricks and consumes a lot of energy. Large, polluting the environment to a certain extent, which is not conducive to sustainable development

Invention patent CN106082881A discloses a paving brick prepared by using waste clay bricks and its preparation method. It uses waste clay bricks to replace part of the cement, and does not need to be fired, which greatly reduces energy consumption. However, the production time is long, which is not conducive to production

The paving bricks prepared by the above two methods are all single in performance, have no water permeability, and are easy to accumulate water on the surface