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Burn-free brick and its preparation method

A technology that does not burn bricks and incinerates ash and slag, which is applied in the fields of environmental protection and circular economy, and can solve the problems of difficult disposal of incineration fly ash.

Active Publication Date: 2021-04-27
LIAONING HAITIANGE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects described in the prior art, so as to provide a burn-free brick and its preparation method, which has high environmental safety and strong economic feasibility, and effectively solves the current difficulties in the disposal of fly ash from domestic waste incineration. problems; the prepared large unburned bricks have good environmental friendliness and strength, and can be applied as building bricks with strong practicability

Method used

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  • Burn-free brick and its preparation method

Examples

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Effect test

Embodiment 1

[0030] This embodiment is to comprehensively utilize domestic garbage incineration residues to make sidewalk paving bricks.

[0031] A process for making non-burning bricks by using domestic waste incineration fly ash and industrial waste slag, the process includes the following steps:

[0032] (1) Place domestic waste incineration fly ash, alkaline substances, industrial waste residue, water glass and solvent in their respective feeding systems;

[0033] The alkaline substances include waste alkali slag, waste alkali liquor and red mud with pH>12, and the ratio of parts by weight is 1:7:2; the industrial waste residue is waste calcium carbonate and waste sand of castings, and the parts by weight are The ratio is 3:1; the solvent is the landfill leachate concentrate;

[0034] The mass percentages of the domestic waste incineration fly ash, alkaline substances, industrial waste residue, water glass and solvent are respectively 40%, 15%, and 15% of the total mass of domestic wa...

Embodiment 2

[0038] This embodiment is to comprehensively utilize fly ash to make building bricks.

[0039] A process for making non-burning bricks by using domestic waste incineration fly ash and industrial waste slag, the process includes the following steps:

[0040] (1) Household waste incineration fly ash, alkaline substances, industrial waste residues, water glass and solvents are placed in their respective feeding systems;

[0041] The alkaline substances include waste sodium hydroxide and ground red mud, and the ratio of parts by weight is 7:3; the industrial waste is waste calcium carbonate and iron ore tailings, and the ratio of parts by weight is 5:1 ; The solvent is clear water, landfill leachate and landfill leachate concentrate, and its weight and number ratio is 80:5:3;

[0042]The mass percentages of the domestic waste incineration fly ash, alkaline substances, industrial waste residue, water glass and solvent are respectively 45%, 10%, and 10% of the total mass of domesti...

Embodiment 3

[0047] A process for making non-burning bricks by using domestic waste incineration fly ash and industrial waste slag, the process includes the following steps:

[0048] (1) The mixture of domestic waste incineration fly ash and residue, alkaline substances, industrial waste residue, water glass and solvent are placed in their respective feeding systems; the domestic waste incineration residue is fly ash and incineration ash, and The ratio of parts by weight of garbage fly ash, fly ash and incineration ash is 8:3:2; the waste alkaline substances include waste sodium hydroxide and waste lye with pH>12, and the ratio of parts by weight is 15 : 10; the industrial waste slag is waste calcium carbonate, casting waste sand and iron ore tailings slag, and its weight and number ratio is 4:2:1; the solvent is the landfill leachate concentrate;

[0049] The mass percentages of the mixture of domestic waste incineration fly ash and residue, alkaline substances, industrial waste residue, ...

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Abstract

The invention discloses a burning-free brick and a preparation method thereof. The burning-free brick comprises 30-45 parts of domestic waste incineration fly ash, 10-15 parts of alkaline substances, 5-10 parts of industrial waste residue, 30-45 parts of water glass and Solvent 0-25 part; Wherein, described industrial waste slag is two or three kinds in waste calcium carbonate, casting waste sand, iron ore tailings slag; Waste slag, water glass and solvent are excited and stirred by alkali to make brick slurry, and then the slurry is discharged into the mold, and after shaking, pressing and curing, it is made into non-burning brick. The process of the invention is simple and the cost is low, and the unburned bricks produced by the invention also have good environmental friendliness and strength, can be applied as building bricks, have strong practicability, and effectively solve the problem of difficult disposal of fly ash from domestic waste incineration .

Description

technical field [0001] The invention relates to the technical fields of environmental protection and circular economy, and in particular to burn-free bricks made by using domestic garbage incineration fly ash and industrial waste slag and a preparation method thereof. Background technique [0002] Domestic waste incineration fly ash refers to the catches of the flue gas purification system in the domestic waste incineration equipment and the bottom ash settled at the bottom of the flue and chimney. Because it contains heavy metals such as lead, mercury, and chromium, and highly carcinogenic dioxins, fly ash from domestic waste incineration is included in the waste category HW18 (waste code 772-002-18) in my country's "National Hazardous Waste List". Although the "Standards for Pollution Control of Domestic Waste Landfill Sites" (GB16889-2008) stipulates that domestic waste incineration fly ash can enjoy the right to exempt hazardous waste during the landfill process under ce...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/006C04B2111/00767C04B2201/50C04B18/106C04B12/04C04B18/14C04B18/0481C04B18/0409C04B18/04C04B2103/0068C04B22/0046C04B18/12C04B22/062C04B22/002C04B18/08C04B18/10
Inventor 宋军孔德勇刘光聪
Owner LIAONING HAITIANGE ENVIRONMENTAL PROTECTION TECH
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