A kind of preparation method of environmental protection brick

Abstract

The invention discloses a method for preparing an environmentally friendly brick. The technical proposal includes: pouring a certain amount of rice husk, sawdust and rubber particles into a certain amount of sewage, adding sludge produced by Fenton oxidation, biochemical sludge and powder Coal ash, stirring to obtain a mixture A of rice husk, sawdust, rubber particles, sludge produced by Fenton oxidation, biochemical sludge and fly ash, transfer the mixture A to a hydrothermal reactor, control the reaction temperature and time, and naturally Cool, filter off the supernatant to obtain mixture B and supernatant; weigh a certain amount of mixture B, add a certain amount of supernatant, and add polypropylene fiber and cement to it, stir and filter to obtain mixture C; The mixture C is transferred to a brick-making mould, which is subjected to compression molding and steam curing to obtain an environmentally friendly brick. The environmentally friendly brick includes porous carbide, iron oxide, harmless sludge, fly ash polypropylene fiber, and cement. It has the advantages of light weight and high strength, reaching MU25 grade.

Description

technical field [0001] The invention relates to the field of environment-friendly building materials, in particular to a preparation method of environment-friendly bricks. Background technique [0002] As a typical way of utilizing solid waste, environmentally friendly bricks have gained widespread attention. The reuse of waste resources is an effective way of green environmental protection, energy saving and emission reduction. With the increasingly severe pressure of national environmental protection, a lot of solid wastes such as biochemical sludge, Fenton oxidation sludge and fly ash have been produced. These solid wastes are often used to make bricks by sintering process. Although they have been reused, they have caused new exhaust gas pollution problems such as sulfur oxides and nitrogen oxides, and the single sludge made of bricks has caused the density of bricks to increase. If it is too large, it cannot fully meet the requirements of energy conservation and environ...

AI Technical Summary

Problems solved by technology

The reuse of waste resources is an effective way of green environmental protection, energy saving and emission reduction. With the increasingly severe pressure of national environmental protection, a lot of solid wastes such as biochemical sludge, Fenton oxidation sludge and fly ash have been produced. These solid wastes are often used to make bricks by sintering process. Although they have been reused, they have caused new exhaust gas pollution problems such as sulfur oxides and nitrogen oxides, and the single sludge made of bricks has caused the density of bricks to increase. Too large, can not fully meet the requirements of energy saving and environmental protection

On the other hand, some original ecological wastes, such as rice husks, sawdust, etc., are commonly disposed of by landfill, incineration, etc., and the resources are not fully utilized.