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Waste sintered brick powder non-sintered foamed ceramsite and preparation method

A technology of brick powder and ceramsite, which is applied in the field of solid waste utilization and non-fired ceramsite, can solve the problems of affecting material properties, efflorescence, and excessive alkali content, so as to reduce production costs, improve utilization rate, and improve economic efficiency. benefit effect

Active Publication Date: 2014-07-30
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Xu Rulin, Active stimulation of construction waste powder and its application. [D] Wuhan University of Technology, 2013.) However, in this process, the amount of alkali mixed is large, and the resulting products will have efflorescence at a certain age, which will affect the quality of materials. performance

Method used

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  • Waste sintered brick powder non-sintered foamed ceramsite and preparation method

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example 1

[0016] Example 1. Grind waste fired bricks and glass powder to 200 meshes, mix raw materials according to the proportion of waste fired brick powder 45%, glass powder 20%, cement 20%, red mud 15%, and add 1% interface agent (rubber powder) and 0.1% catalyst (manganese dioxide), and stir them evenly with a mixer; take 10% hydrogen peroxide solution of the total mass of waste fired brick powder, glass powder, red mud, and cement, and mix it according to w / t=0.4 Dilute, add to the mixer and stir, add the evenly stirred mixture into the granulator, process it into round particles with a diameter of 13mm, prepare a certain concentration of clean slurry, and wrap a layer of cement clean slurry on the ceramsite; The pellets were steam-cured for 6 hours under the conditions of 90° C. and 90% humidity to obtain the product. Density 835kg / m 3 , Strength 2.4MPa.

example 2

[0017] Example 2. Grind waste fired bricks and glass powder to 200 meshes, mix raw materials according to the proportion of waste fired brick powder 50%, glass powder 20%, cement 20%, red mud 10%, and add 1% interface agent (rubber powder) and 0.1% catalyst (manganese dioxide), and stir them evenly with a mixer; take 10% hydrogen peroxide solution of the total mass of waste fired brick powder, glass powder, red mud, and cement, and mix it according to w / t=0.4 Dilute, add to the mixer and stir, add the evenly stirred mixture into the granulator, process it into round particles with a diameter of 13mm, prepare a certain concentration of clean slurry, and wrap a layer of cement clean slurry on the ceramsite; The pellets were steam-cured for 6 hours under the conditions of 90° C. and 90% humidity to obtain the product. Density 830kg / m 3 , Strength 2.5MPa.

example 3

[0018] Example 3. Grind waste fired bricks and glass powder to 200 meshes, mix raw materials according to the ratio of waste fired brick powder 55%, glass powder 15%, cement 15%, red mud 15%, and add 1% interface agent (rubber powder) and 0.1% catalyst (manganese dioxide), and stir them evenly with a mixer; take 10% hydrogen peroxide solution of the total mass of waste fired brick powder, glass powder, red mud, and cement, and mix it according to w / t=0.4 Dilute, add to the mixer and stir, add the evenly stirred mixture into the granulator, process it into round particles with a diameter of 13mm, prepare a certain concentration of clean slurry, and wrap a layer of cement clean slurry on the ceramsite; The pellets were steam-cured for 6 hours under the conditions of 90° C. and 90% humidity to obtain the product. Density 842kg / m 3 , Strength 2.08MPa.

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Abstract

A waste sintered brick powder non-sintered foamed ceramsite and a preparation method belong to the technical fields of solid waste utilization and non-sintered ceramsite. The ceramsite comprises: 45-60% of waste sintered brick powder, 15-25% of glass powder, 10-15% of red mud, 10-20% of cement, 0.1% of catalysts, and hydrogen peroxide used as a foaming agent. The preparation process comprises the following steps: drying, crushing, grinding, and sieving the raw materials; mixing and uniformly stirring the raw materials according to the ratio; preparing a hydrogen peroxide solution, adding the hydrogen peroxide solution into the mixture, uniformly stirring, preparing ceramsite, preparing cement paste, wrapping the ceramsite with the cement paste; and performing steam curing of the ceramsite. The preparation method of the invention adopts construction wastes as the raw materials, adopts hydrogen peroxide as the foaming agent, and performs steam curing of the ceramsite to obtain light-weight ceramsite. The non-sintered ceramsite is energy-saving and environment-friendly, and increases the utilization added value of construction wastes.

Description

technical field [0001] The invention belongs to the technical field of solid waste utilization and non-fired ceramsite, and relates to a preparation method of waste fired brick powder non-fired foamed ceramsite. technical background [0002] In recent years, as my country's economic construction continues to accelerate, my country's urban construction and transportation construction processes are also speeding up. In this process, a large amount of construction waste is produced. The current construction waste treatment in our country is still dominated by accumulation and landfill, and the environmental impact and loss caused by this treatment method are very huge. Some data show that the construction waste that is currently landfilled and piled up in our country has caused huge pollution to the soil and groundwater, causing direct economic losses of 20 billion yuan. Therefore, it is very necessary to find a sustainable development path for the recycling of construction w...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B41/50
Inventor 严建华周朋冷发光张程浩庞保雪张东梅柏晓强
Owner BEIJING UNIV OF TECH
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