Brick making method

Abstract

The invention relates to a brick making method. The brick making method comprises the following steps: 1) smashing the following raw materials in parts by volume: 30-40 parts of building waste materials, 20-30 parts of shale, 10-15 parts of coal cinder and 50-80 parts of clay, and then mixing to obtain a brick making raw material; 2) adding water into the brick making raw material, stirring to obtain pug, and then ageing for more than two days; 3) preparing the pug into green bricks by adopting a vacuum brick extruding machine; and 4) roasting at the temperature of 700-800 DEG C under the condition that the vacuum degree of the green bricks is less than 0.1, so that the finished product brick is obtained. The method provided by the invention is environment-friendly, and brick making efficiency is high.

Description

Technical field [0001] The invention relates to a method for making bricks. Background technique [0002] Currently, a large amount of domestic sewage is treated in urban landfills-the sludge whose water content is still between 60-85% (including crystal water) after pressure, filtration and pre-dewatering is prohibited by local governments because it contains harmful substances such as heavy metals Landfill in situ, although it can be dewatered by a chemical method and then burned in a furnace or disposed of by a cement plant, the amount of digestion is far from sufficient. [0003] The sludge of the domestic sewage treatment plant is saturated with 80% of the water, most of which are crystalline water that is difficult to evaporate under the sun. Even if exposed to the sun, only a small amount of crystalline water can be emitted, and the water content is as high as 80%. In order to reduce the water content of sludge from urban domestic sewage plants (even if the water content is...

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment of a large amount of domestic sewage in urban filling - the sludge with a water content of 60-85% (including crystal water) after the sedimentation sludge is pressed, filtered and pre-dehydrated is strictly prohibited by local governments because it contains harmful substances such as heavy metals. Landfill on site, although it is dehydrated by chemical method and then incinerated or disposed of by cement factory, but the amount of digestion is far from meeting the amount of production

[0003] The sludge of domestic sewage treatment plants is full of 80% water, and most of them are crystalline water bodies that are difficult to evaporate even if they are exposed to the sun. In order to reduce the water content of sludge from urban domestic sewage plants (even if the water content is reduced to 80% to 60%), the investment in energy and funds required is seriously outweighed by the gains, and secondary pollution is also inevitable