Artificial aggregate and preparation method thereof

An artificial bone and artificial technology, applied in the field of solid waste reuse, can solve the problems of large land occupation, low utilization rate, polluted land, rivers and lakes, etc., and achieve the effects of saving steel bars, low water absorption and low density

Pending Publication Date: 2020-03-10
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, waste dust residues are treated by filling, building fillers, etc., and a large amount of foundry waste ash is accumulated, and the utilization rate is extremely low. As time goes by, it will not only occupy a large amount of land, but also pollute the land and rivers and lakes under the action of rainwater.

Method used

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  • Artificial aggregate and preparation method thereof
  • Artificial aggregate and preparation method thereof
  • Artificial aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Prepare the mixture:

[0034] Put 250 parts of foundry regeneration ash, 250 parts of foundry dedusting ash and 50 parts of Ca-based bentonite ball-milled into 150-mesh raw materials into a mixer and stir for 10 minutes;

[0035] (2) Granulation and maintenance:

[0036] Granulate the mixed powder in a disc granulator with a rotating speed of 35r / min to obtain pellets with a particle size of 5mm, and then maintain them in a thermostat at 120°C for 24 hours;

[0037] (3) Sintering:

[0038] The artificial aggregate was obtained by sintering at 1125° C. for 30 minutes.

Embodiment 2

[0040] (1) Prepare the mixture:

[0041] Put 250 parts of foundry regenerated ash, 250 parts of foundry dedusting ash, 50 parts of Ca-based bentonite, and 50 parts of fly ash into 100 mesh particle size, put them into the mixer and stir for 5 minutes;

[0042] (2) Granulation and maintenance:

[0043] Granulate the mixed powder in a disc granulator with a rotating speed of 30r / min to obtain pellets with a particle size of 3mm, and then maintain them in a thermostat at 120°C for 24 hours;

[0044] (3) Sintering:

[0045] The artificial aggregate was obtained by sintering at 1150° C. for 30 minutes.

Embodiment 3

[0047] (1) Prepare the mixture:

[0048] Put 250 parts of foundry regenerated ash, 250 parts of foundry dedusting ash, 75 parts of Ca-based bentonite and 75 parts of fly ash into 150 mesh particle size and put them into the mixer and stir for 15 minutes;

[0049] (2) Granulation and maintenance:

[0050] Granulate the mixed powder in a disc granulator with a rotating speed of 40r / min to obtain pellets with a particle size of 8mm, and then maintain them in a thermostat at 120°C for 24 hours;

[0051] (3) Sintering:

[0052] The artificial aggregate was obtained by sintering at 1150° C. for 30 minutes.

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PUM

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Abstract

The invention provides an artificial aggregate and a preparation method thereof. The artificial aggregate comprises the following components in parts by mass: 500-1000 parts of casting waste ash, 50-100 parts of bentonite, 0-100 parts of fly ash and 0-5 parts of coal powder. According to the invention, the artificial aggregate has advantages of low density, low water absorption, high strength andthe like; with the application of the artificial aggregate to construct large-span bridges and super high-rise buildings, the self-weight of the constructed structure can be reduced by 30-40%, the labor intensity can be reduced by about 20%, the material transportation amount can be reduced by 30-40%, the steel bar amount can be saved by about 10%, the construction cost can be comprehensively reduced by 10%, the self-weight of the structures can be greatly reduced, and the foundation load can be reduced; with the method, the casting waste ash and the fly ash are used as the raw materials, so that the waste ash in the casting process and the fly ash generated by the coal-fired power plant are effectively utilized so as to reduce the production cost; and the product yield is consistent, andthe stability is high.

Description

technical field [0001] The invention relates to a method for reusing solid waste, in particular to an artificial aggregate prepared by using solid waste as a raw material and a preparation method thereof. Background technique [0002] The foundry industry is an energy- and resource-intensive industry that consumes a lot of energy and a variety of raw and auxiliary materials. Every 1 ton of castings produced will produce about 1.2 to 1.4 tons of waste sand, and at the same time it will produce a large amount of waste such as foundry waste slag, foundry Remove dust and other waste. In the prior art, waste dust residues are treated by filling, building fillers, etc., and a large amount of foundry waste ash is accumulated, and the utilization rate is extremely low. As time goes by, it will not only occupy a large amount of land, but also pollute the land and rivers and lakes under the action of rainwater. . Therefore, the current resource utilization of solid waste is called "...

Claims

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Application Information

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IPC IPC(8): C04B33/138C04B33/135C04B33/13
CPCC04B33/138C04B33/1352C04B33/1305C04B2235/77C04B2235/96Y02P40/60
Inventor 窦明岳张宏生王光
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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