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A light-burning solid waste 3D printing ventilation and airtight material and its preparation method

A 3D printing and airtight technology, which is applied in the field of light-burning solid waste 3D printing ventilation and airtight materials and its preparation, can solve problems that affect mine safety production, high construction costs, and brittle damage, and achieve resource utilization and excellent accumulation Performance and strength properties, the effect of avoiding brittle failure

Active Publication Date: 2021-12-28
HENAN INST OF ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a light-burning solid waste 3D printing ventilation and airtight material and its preparation method to overcome the high cost, low construction efficiency, Labor intensity is high, and brittle damage forms cracks to cause air leakage, which affects the safe production of mines. At the same time, it realizes the resource utilization of medical waste incineration ash, domestic waste incineration ash and phosphogypsum

Method used

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  • A light-burning solid waste 3D printing ventilation and airtight material and its preparation method
  • A light-burning solid waste 3D printing ventilation and airtight material and its preparation method
  • A light-burning solid waste 3D printing ventilation and airtight material and its preparation method

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preparation example Construction

[0051] The present invention also provides a method for preparing light-burned solid waste 3D printing ventilation and sealing materials. The preparation method is prepared by using the component raw materials contained in the light-burning solid waste 3D printing ventilation and sealing materials. The preparation method includes the following steps :

[0052] Step S1, pretreat the bottom ash of medical waste incineration, fly ash of domestic waste incineration and phosphogypsum, and then weigh the pretreated bottom ash of medical waste incineration, fly ash of domestic waste incineration and phosphogypsum according to the proportion and mix them evenly, Then it is calcined at a high temperature in a furnace, cooled at room temperature and ground to obtain an active admixture.

[0053] In a specific embodiment of the present invention, the pretreatment of medical waste incineration bottom ash, domestic waste incineration fly ash and phosphogypsum in step S1 is specifically at ...

Embodiment 1

[0073] This embodiment provides a light-burning solid waste 3D printing ventilation and sealing material, which includes the following raw materials in parts by weight: 25 parts of medical waste incineration bottom ash, 8 parts of phosphogypsum, Portland cement 40 parts of clinker, 6.5 parts of domestic waste incineration fly ash, 120 parts of spontaneous combustion coal gangue, 4.5 parts of carbide slag, 0.3 parts of aluminum sulfate, 0.2 parts of sodium carbonate, 0.5 parts of sodium methyl silicate, 4.5 parts of acrylic acid emulsion, carboxymethyl Base cellulose sodium 0.1 part, water 34 parts.

[0074] In this embodiment, the preparation method of light-burned solid waste 3D printing ventilation and airtight materials includes the following steps:

[0075] Step S1. Dry the bottom ash of medical waste incineration, fly ash of domestic waste incineration and phosphogypsum at 110°C to constant weight, screen out the metal impurities in the bottom ash of medical waste inciner...

Embodiment 2

[0084] This embodiment provides a light-burning solid waste 3D printing ventilation and sealing material. The ventilation and sealing material includes the following raw materials in parts by weight: 25 parts of medical waste incineration bottom ash, 5 parts of phosphogypsum, Portland cement 30 parts of clinker, 8 parts of domestic waste incineration fly ash, 60 parts of spontaneous combustion coal gangue, 3 parts of carbide slag, 0.2 parts of aluminum sulfate, 0.2 parts of sodium carbonate, 0.5 parts of sodium methyl silicate, 4 parts of acrylic emulsion, carboxymethyl Base cellulose sodium 0.1 part, water 28 parts.

[0085] The difference between the preparation method of light-burned solid waste 3D printing ventilation and airtight materials in this example and the preparation method in Example 1 is that the amount of raw materials in this example is according to the proportion of the above components in this example, and the calcination in step S1 The temperature is 850° C...

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Abstract

The invention provides a light-burning solid waste 3D printing ventilation and sealing material and a preparation method thereof. The ventilation and sealing material includes the following components in parts by weight: 15-30 parts of medical waste incineration bottom ash, 5-10 parts of phosphogypsum, Portland cement clinker 30-45 parts, domestic waste incineration fly ash 5-8 parts, spontaneous combustion gangue 60-180 parts, carbide slag 3-6 parts, aluminum sulfate 0.2-0.4 parts, sodium carbonate 0.1-0.3 parts , 0.3-0.8 parts of sodium methyl silicate, 4-5 parts of acrylic emulsion, 0.06-0.13 parts of sodium carboxymethyl cellulose or hydroxypropyl methyl cellulose, 28-40 parts of water. The 3D printing ventilating and sealing material prepared in the present invention is in the form of a slurry, which has excellent extrudability, stackability and strength properties, and has a certain pressure-releasing performance, and at the same time realizes the recycling of solid waste Utilization has better environmental and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and in particular relates to a light-burning solid waste 3D printing ventilation and airtight material and a preparation method thereof. Background technique [0002] Medical waste is infectious, toxic and other hazardous solid waste produced by medical institutions during medical activities. If not handled properly, medical waste will cause environmental pollution and spread of diseases, thereby threatening human physical and mental health. The output of medical waste is huge. With the outbreak of the new crown epidemic, the total amount of medical waste in my country will exceed 1.6 million tons. Medical waste disposal methods include cleaning and disinfection, high-temperature disinfection, landfill and incineration, etc. Incineration has the advantages of volume reduction, weight reduction, and high-temperature sterilization, and is widely popularized and applied. However,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B38/02C04B24/42C04B24/38C04B24/26C04B22/14C04B22/10C04B18/10B33Y10/00B33Y70/10
CPCC04B28/143C04B24/42C04B24/383C04B22/10C04B22/148C04B18/10C04B24/26C04B38/02B33Y10/00B33Y70/10C04B2111/00017C04B2111/00724C04B7/02C04B18/12C04B18/0427Y02W30/91
Inventor 卢前明孔林陈景卫陈永丰李强王静文
Owner HENAN INST OF ENG
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