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High-hardness sound insulation brick prepared from foundry waste sand and preparation method thereof

A technology of casting waste sand and high hardness, which is used in the production, application, and ceramic products of ceramic materials, can solve the problems of corner powder, poor sound insulation effect, poor compactness, etc., to improve hardness and compactness, and improve sound insulation effect. Effect

Active Publication Date: 2021-07-09
马鞍山市绿科环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, adding cement to foundry waste sand to make bricks is a common waste sand reuse method in the construction industry. However, the formed bricks have low hardness, poor compactness, poor sound insulation effect, short weather resistance time, and are easy to edge. Keratinization

Method used

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  • High-hardness sound insulation brick prepared from foundry waste sand and preparation method thereof
  • High-hardness sound insulation brick prepared from foundry waste sand and preparation method thereof
  • High-hardness sound insulation brick prepared from foundry waste sand and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] refer to figure 1 , a high-hardness sound-insulating brick produced by using foundry waste sand, including a porous layer 1, a self-dense layer 2 and a sealing layer 3, the self-dense layer 2 is a frame shape with both ends transparent, and a sealing layer is arranged inside it 3. There is a layer of porous layer 1 on the outside, and the ratio of the parts by weight of the raw materials used in the porous layer 1 is as follows:

[0091] 300 mesh to 500 mesh foundry waste sand 50;

[0092] Cr powder 18;

[0093] Amorphous carbon powder 29;

[0094] Foam stabilizer 2;

[0095] binder2;

[0096] Among them, the foundry waste sand is any one of water glass sand, resin sand and clay sand; wherein the foundry waste sand contains high-temperature gas-generating substances, such as sodium carbonate in water glass sand, organic components in resin sand, and clay sand. The coal components are all high-temperature gas-generating substances. The high-temperature gas-generatin...

Embodiment 2

[0113] The difference between the present embodiment and the first embodiment is only that the raw material ratio of the porous layer 1 is different, and the ratio of the parts by weight of the raw materials used in the porous layer 1 is as follows:

[0114] 300 mesh to 500 mesh foundry waste sand 60;

[0115] Cr powder 12;

[0116] Amorphous carbon powder 25;

[0117] Foam stabilizer 1;

[0118] binder2;

[0119] Among them, the foundry waste sand is any one of water glass sand, resin sand and clay sand; the binder is water glass, that is, the mixture particles of sodium silicate and potassium silicate; the foam stabilizer is polyacrylamide, polyethylene Any one or more of alcohol, protein, polypeptide, starch, cellulose and silicone amide.

Embodiment 3

[0121] The difference between the present embodiment and the first embodiment is only that the raw material ratio of the porous layer 1 is different, and the ratio of the parts by weight of the raw materials used in the porous layer 1 is as follows:

[0122] 300 mesh to 500 mesh foundry waste sand 70;

[0123] Cr powder 6;

[0124] Amorphous carbon powder 22;

[0125] Foam stabilizer 0.5;

[0126] binder 1.5;

[0127] Among them, the foundry waste sand is any one of water glass sand, resin sand and clay sand; the binder is water glass, that is, the mixture particles of sodium silicate and potassium silicate; the foam stabilizer is polyacrylamide, polyethylene Any one or more of alcohol, protein, polypeptide, starch, cellulose and silicone amide.

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Abstract

The invention discloses a high-hardness sound insulation brick prepared from foundry waste sand and a preparation method thereof, and belongs to the technical field of foundry waste sand re-utilization. The high-hardness sound insulation brick comprises a sparse hole layer, a self-sealing layer and a sealing layer, the self-sealing layer is in a frame shape with two through ends, the sealing layer is arranged inside the self-sealing layer, the sparse hole layer is arranged outside the self-sealing layer. The sparse hole layer is prepared from the following raw materials in parts by weight: 50-70 parts of casting waste sand of 300-500 meshes; 6 to 18 parts of Cr powder; 22 to 32 parts of amorphous carbon powder; 0.5-2 parts of a foam stabilizer; and 0.5-2 parts of an adhesive. Chromium and carbon are adopted to form chromic oxide at a high temperature, the hardness and compactness of a structural layer are improved, a porous groove structure is formed on the outer wall of the brick at the high temperature, a compact structure is formed on the inner wall of the brick, and the sound absorption and insulation performance is improved.

Description

technical field [0001] The invention relates to the technical field of recycling foundry waste sand, in particular to a high-hardness sound-insulating brick produced by using foundry waste sand and a preparation method thereof. Background technique [0002] Sand casting accounts for 80%-90% of the foundry industry. According to statistics, every 1t of qualified castings can produce about 1.2t of waste sand, and the foundry industry has a huge amount of casting waste. The foundry waste sand is mainly discharged in the field, and the cumulative discharge has reached more than 3 billion tons, and it is increasing at a rate of 30 million tons every year. A large amount of foundry waste sand piled up in the wild as garbage not only occupies a large amount of land resources, but also causes a huge waste of waste sand materials. Except for a small amount of waste sand for regeneration and reuse, most of them are mainly discarded, which is extremely harmful to limited resources. Wa...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B33/138C04B33/132C04B33/13
CPCC04B38/02C04B33/138C04B33/132C04B33/13C04B33/131C04B2235/96C04B2235/662C04B2235/6567C04B38/0074Y02P40/60
Inventor 刘涛
Owner 马鞍山市绿科环保科技有限公司
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