Standard brick preparation process and standard brick

Abstract

The invention relates to a standard brick preparation process and a standard brick, and relates to the field of building bricks and their preparation. The process comprises steps: 1. Making a brick; 2. Spraying a surface treatment liquid accounting for 1-5 wt% of the brick mass on the surface of the brick I; surface treatment liquid I is composed of: A, 5-8% of inorganic mineral powder with particle size ≤ 1.5mm, B, 3-5% of water-soluble polymer, C, 1.5-3.0% of fumed silica , D, water balance, composition; Inorganic mineral powder is the mixture of nano-alumina, cryolite powder and mica powder; Water-soluble polymer is the mixture of polyvinyl alcohol and water-soluble chitosan; 3, under the condition of 70-90 ℃ Drying the adobe sprayed with the treatment solution I; 4. Roasting. The standard brick preparation process of the present invention can effectively reduce the content of solid particles in brick-making waste gas, and has the advantage of reducing the emission of solid particles from the source, and the prepared standard brick has the advantages of good physical and mechanical properties and good permeability resistance.

Description

technical field

[0001] The invention relates to the technical field of building bricks and their preparation, in particular to a preparation process of standard bricks and standard bricks. Background technique

[0002] The artificial drying of brick and tile enterprises and the discharge of particulate matter from roasting kilns are one of the man-made sources of particulate matter in the polluted atmosphere. Due to environmental protection requirements, the emission standards for air pollutants in the brick and tile industry are becoming increasingly strict. Taking the national standard "Emission Standard of Air Pollutants for Brick and Tile Industry" GB29630-2013 promulgated in 2013 and implemented in 2014 as an example, it clearly stipulates that the maximum allowable particulate matter in exhaust gas discharged into the atmosphere is 30mg / m 3 (The special emission limit in key areas is 20mg / m 3 ).

[0003] For such a strict air pollution particle emission limit, brick...

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