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Building-waste-based thermal insulation material preparation method

A technology of construction waste and heat insulation materials, which is applied in the production of ceramic materials, clay products, ceramic products, etc., can solve the problems of low utilization rate of recycled aggregates, easy cracks, poor added value, etc., and solve the problem of large occupied area , low cost and energy consumption, and high value-added effects

Inactive Publication Date: 2018-07-13
SHANGHAI LAOGANG WASTE DISPOSAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the traditional inorganic materials, air-entrained concrete is the most widely used, but it is prone to cracks, which affects the actual application
Although organic thermal insulation materials have good performance, when they are removed, the added substances will often cause pollution to the environment
[0007] Therefore, in order to solve the problems of low utilization rate and poor added value of recycled aggregates separated from decoration waste sorting, and to implement the national requirements for energy saving and emission reduction in the construction industry, new thermal insulation materials were developed, and construction waste-based preparation and insulation materials were developed. Research on materials and provide a preparation method of construction waste-based insulation materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Select a certain quality of construction waste for crushing;

[0034] (2) The construction waste crushed in step (1) is passed through an 80-mesh sieve, and the under-sieved material is passed through a 120-mesh sieve to obtain a 120-mesh under-sieve powder;

[0035] (3) Put the 120-mesh powder under the sieve in step (2) into a grinding equipment, and further refine it to a specified number of meshes to obtain a refined powder;

[0036] (4) Take 10 parts by weight of NaOH and stir in 50 parts by weight of water glass solution (water glass modulus is 1.2), seal the mouth of the container with plastic wrap, and cool to room temperature to obtain a mixed solution;

[0037] (5) Take 10 parts by weight of the powder under the 120-mesh sieve in step (2), 65 parts by weight of the refined powder in step (3), 60 parts by weight of the mixed solution in (4), 3 parts by weight of hydrogen peroxide Solution, 0.5 parts by weight of sodium lauryl sulfate, placed in a mixer to mix and s...

Embodiment 2

[0041] (1) Select a certain quality of construction waste for crushing;

[0042] (2) The construction waste crushed in step (1) is passed through an 80-mesh sieve, and the under-sieved material is passed through a 120-mesh sieve to obtain a 120-mesh under-sieve powder;

[0043] (3) Put the 120-mesh powder under the sieve in step (2) into a grinding equipment, and further refine it to a specified number of meshes to obtain a refined powder;

[0044] (4) Take 8 parts by weight of NaOH in 50 parts by weight of water glass solution (water glass modulus is 1.4), seal the mouth of the container with plastic wrap, and cool to room temperature to obtain a mixed solution;

[0045] (5) Take 5 parts by weight of the powder under the 120-mesh sieve in step (2), 75 parts by weight of the refined powder in step (3), 56 parts by weight of the mixed solution in (4), 4 parts by weight of hydrogen peroxide The solution, 0.75 parts by weight of sodium stearate, is placed in a mixer to mix and stir to ob...

Embodiment 3

[0049] (1) Select a certain quality of construction waste for crushing;

[0050] (2) The construction waste crushed in step (1) is passed through an 80-mesh sieve, and the under-sieved material is passed through a 120-mesh sieve to obtain 120-mesh under-sieve powder;

[0051] (3) Put the 120-mesh powder under the sieve in step (2) into a grinding equipment, and further refine it to a specified number of meshes to obtain a refined powder;

[0052] (4) Take 8 parts by weight of NaOH in 50 parts by weight of water glass solution (water glass modulus is 1.2), seal the mouth of the container with plastic wrap, and cool to room temperature to obtain a mixed solution;

[0053] (5) Take 80 parts by weight of the powder refined in step (3), 60 parts by weight of the mixed solution in (4), 4 parts by weight of hydrogen peroxide solution, 1.25 parts by weight of sodium lauryl sulfate, and place in a mixer Mix and stir to obtain mixed materials;

[0054] (6) Put the materials mixed in step (5) int...

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Abstract

The invention discloses a building-waste-based thermal insulation material preparation method, which comprises: (1) selecting building waste, and breaking; (2) screening the broken base material by using a sieve to obtain powder under the sieve; (3) placing the obtained powder under the sieve into a powder grinding device, and further refining to obtain fine powder; (4) taking NaOH, and placing into a water glass solution to obtain a mixed solution; (5) taking the powder under the sieve, the fine powder, the mixed solution, a hydrogen peroxide solution and an auxiliary agent, placing into a stirrer, and mixing and stirring to obtain a mixture; and (6) placing the obtained mixture into a mold, placing into a muffle furnace, heating at a rate of 5-15 DEG C / min to a temperature of 800 DEG C,carrying out thermal insulation for more than 30 min, cooling, and demolding to obtain the building-waste-based thermal insulation material. According to the present invention, the preparation processis simple, the cost and the energy consumption are low, the problems of large occupation area and difficult consumption treatment of building waste are solved, and the resourced product has the highadded value and the wide application prospect.

Description

Technical field [0001] The invention relates to the technical field of comprehensive utilization of construction waste, in particular to a preparation method of construction waste-based thermal insulation material. Background technique [0002] At present, every year in my country, a large number of chemical, metallurgical, light industry, and processing enterprises face demolition or reconstruction, resulting in a large amount of contaminated decoration waste or construction waste. Among them, the decoration waste produced by industrial enterprises such as chemical industry, metallurgy and pesticide contains hazardous waste, which has complex features such as high pollutant content, uneven pollution distribution, and hidden environmental risks. [0003] The existing treatment processes of decoration waste include sorting, crushing, screening, and cleaning. The waste concrete, waste bricks, waste marble and other materials in the decoration garbage are crushed on site by a large g...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B38/10C04B38/02
CPCC04B33/1324C04B38/10C04B2235/3201C04B2235/3427C04B2235/6562C04B2235/77C04B2235/9607C04B2235/96C04B38/0074C04B38/02Y02P40/60
Inventor 王瑟澜郑毅周海燕张美兰赵由才黄仁华陈卫朱利忠
Owner SHANGHAI LAOGANG WASTE DISPOSAL CO LTD
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