Brick making method

Abstract

The invention relates to a brick making method, which uses raw materials of coal gangue, furnace clinker, shale, coal ash and clay and prepared according to the steps of (1) smashing and grinding the raw materials to be particles with the particle size below 2mm; (2) evenly mixing the particles of the raw materials, adding warm water to mix and make mud materials, and then conducting ageing treatment for more than 24 hours; (3) adopting a vacuum brick squeezing machine with the vacuum degree of -0.07MPa to -0.08MPa and molding moisture of 13.5%-14.5% to make the mud materials into green bricks, and adding a transducer on a main motor of the vacuum brick squeezing machine; (4) placing the green bricks into a drying hole to remove moisture and dry in a concentration mode; (5) adopting residual carbon of raw material gangue, furnace clinker and coal ash, and roasting by adopting a method of taking internal combustion as the principal thing and external combustion as the minor thing; and (6) cooling to obtain end products and detecting the content of calcium oxide. The brick making method is low in coal consumption and power consumption and stable in quality of made bricks.

Description

technical field [0001] The invention relates to a brick making method for building bricks. Background technique [0002] A large number of demolition and construction projects have led to an increasing demand for building bricks, and the current building bricks are almost all fired from clay, which requires a large amount of mining of cultivated land, resulting in a large amount of loss and waste of cultivated land resources. The discharge of industrial waste such as fly ash and coal gangue has increased rapidly. If not utilized, it will occupy a large amount of ash storage space and pollute the environment. In order to reduce the amount of clay used in the brick-making industry and accelerate the resource utilization of industrial waste such as fly ash and coal gangue, many brick-making enterprises have begun to use fly ash and coal gangue to produce sintered bricks. However, the traditional brick-making process has high coal consumption and high power consumption. The cal...

AI Technical Summary

Problems solved by technology

However, the traditional brick-making process has high coal consumption and high power consumption. The calcium oxide content of some bricks exceeds the standard, the quality is unstable, and major quality accidents are prone to occur. Moreover, the drying and moisture removal efficiency is very low in rainy days.

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