Method for manufacturing foamed bricks based on construction waste soil

A technology of engineering dregs and foam bricks, which is applied in the field of waste utilization, can solve problems such as environmental pollution, surrounding surface water and groundwater pollution, and achieve the effects of reducing environmental pollution and improving mechanical properties

Inactive Publication Date: 2016-06-29
CHANGZHOU DAAO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: in view of the leachate or leachate produced by the fermentation of domestic garbage mixed in and the showering of rainwater and the immersion of surface water and groundwater during the stacking and landfill process of current engineering dregs, resulting in Serious pollution of surrounding surface water and groundwater, and serious environmental pollution, the present i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] First, remove the plastic, glass and rubber impurities in the engineering slag through manual screening, and then dry it naturally. When the moisture content is 5%, put it in a brick pulverizer for smashing and sieving to obtain a 20-mesh project The slag particles are then put into a magnetic separator. After the metal impurities are removed, they are mixed with 5% hydrogen peroxide at a material-to-liquid mass ratio of 1:2; the above container is pressurized to 0.5MPa, Heat to 120℃, keep the temperature for 50min, then naturally cool to room temperature, remove the impurities floating on the surface of the liquid, then filter, collect the filtrate and put it in an air dryer to air dry, get the pretreatment engineering residue; take 1kg of the pretreatment engineering residue Soil, 700g of 80 mesh kaolin, 120g of 100 mesh of bamboo shavings powder and 210g of 100 mesh of feldspar particles are mixed uniformly, and then calcined in a 900 ℃ calciner for 3...

Example Embodiment

[0022] Example 2

[0023] First, remove the plastic, glass and rubber impurities in the engineering slag through manual screening, and then dry it naturally. When the water content is 10%, put it in a brick crusher for crushing, and sieve to obtain a 20-mesh project The slag particles are then put into a magnetic separator. After the metal impurities are removed, they are mixed with 5% hydrogen peroxide at a material-to-liquid mass ratio of 1:2; the above-mentioned container is pressurized to 0.7MPa, Heat to 150℃, keep the temperature for 70min, then naturally cool to room temperature, remove the impurities floating on the liquid surface, then filter, collect the filtrate and put it in an air dryer to air dry, get pretreatment engineering residue; take 3kg pretreatment engineering residue Soil, 800g 80 mesh kaolin, 150g 100 mesh bamboo shavings powder and 260g 100 mesh feldspar particles are mixed uniformly, and then calcined in a 900 ℃ calciner for 40 minutes. The calcined mater...

Example Embodiment

[0025] Example 3

[0026] Firstly, the plastic, glass and rubber impurities in the engineering slag are removed by manual screening, and then they are naturally aired. When the moisture content is 8%, they are placed in a brick pulverizer for crushing, and then sieved to obtain a 20-mesh project. The slag particles are then put into a magnetic separator. After the metal impurities are removed, they are mixed with 5% hydrogen peroxide at a material-to-liquid mass ratio of 1:2; the above-mentioned container is pressurized to 0.6MPa, Heat to 140℃, keep the temperature for 60min, then cool to room temperature naturally, remove the impurities floating on the surface of the liquid, then filter, collect the filtrate and put it in an air dryer to air dry to obtain pretreatment engineering residue; take 2kg of pretreatment engineering residue Soil, 780g of 80 mesh kaolin, 140g of 100 mesh of bamboo shavings powder and 230g of 100 mesh of feldspar particles are mixed uniformly, and then ca...

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PUM

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Abstract

The invention relates to a method for preparing foam bricks based on engineering dregs, and belongs to the technical field of waste utilization. The present invention aims at leachate or leachate produced by the fermentation of domestic garbage mixed in and the showering of rainwater and the immersion of surface water and groundwater in the process of stacking and landfilling the current engineering dregs, causing damage to the surrounding surface water and groundwater. Serious pollution, and the problem of serious environmental pollution, the present invention first removes light impurities and metal impurities in engineering dregs by manual screening and magnetic separation, and then mixes them with hydrogen peroxide at high temperature and high pressure to remove harmful impurities. Substances and microorganisms, and then mixed with kaolin, feldspar particles, etc., supplemented with foaming agents, adhesives and other additives, and finally roasted to prepare foam bricks.

Description

technical field [0001] The invention relates to a method for preparing foam bricks based on engineering dregs, and belongs to the technical field of waste utilization. Background technique [0002] Engineering slag is mainly composed of soil, scattered mortar and concrete fragments, bricks and stones produced by chiseling, scrap metal, bamboo wood, waste generated in the process of building decoration, various packaging materials and other wastes, etc. , the proportion of soil is about 60%. Since the muck contains a lot of alkaline concrete, which seriously affects the growth of crops, it is generally used for deep pit landfill, and the disposal occupies a large area. [0003] Although most cities have fixed spoil points, with the continuous expansion of the urbanization process, the discharge of construction waste has increased year by year, seriously affecting the urban environment. Therefore, the government has issued relevant construction waste management measures, requ...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B38/10C04B18/02
CPCC04B28/08C04B18/023C04B2201/20C04B2201/32C04B2201/50
Inventor 王力威宋国
Owner CHANGZHOU DAAO NEW MATERIAL TECH CO LTD
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