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A method for sintering foamed ceramics with construction spoil

A technology of construction spoil and ceramics, which is applied in the direction of ceramic products, ceramic material production, clay products, etc., and can solve the problem that construction spoil has not been properly disposed of

Active Publication Date: 2021-05-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for sintering building spoils to foam ceramics in order to solve the above problems, to solve the problem that the building spoils in the prior art have not been properly handled, and to process the difficult-to-use building spoils and Compounding, so that it can be used as a raw material for sintered foamed ceramics, and at the same time improve the performance of traditional foamed ceramics

Method used

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  • A method for sintering foamed ceramics with construction spoil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The construction spoil is excavated with earth and stone, and the spoil is blended with fly ash.

[0079] Follow the steps below to implement:

[0080] Collect earthwork excavation spoil, put earthwork excavation spoil into mobile crusher, crush it, pass through 6-mesh sieve, and screen to obtain construction spoil raw materials with a particle size not greater than 3.35mm. Add fly ash to the earth and stone excavation spoil, by weight, take 50 parts of earth and stone excavation spoil particles, 25 parts of fly ash, put the raw materials into a horizontal ribbon mixer, and stir for 20 minutes to obtain sintered bone material.

[0081] In parts by weight, 80 parts of the above sintered aggregate, 5 parts of animal hoof horn foaming agent, 5 parts of sodium bentonite, 5 parts of ordinary silicate glass shards and 60 parts of tap water are taken. Put the above-mentioned materials weighed into a ball mill, ball mill for 1 hour, add water to refine the mud, and inject it ...

Embodiment 2

[0088] The construction spoil is made of muddy construction spoil and prepared with diatomaceous earth.

[0089] Follow the steps below to implement:

[0090] Collect the silty construction spoil, and stack the silty construction spoil for 15 days, pass through a 6-mesh sieve, and screen to obtain construction spoil raw materials with a particle size not greater than 3.35mm. Add diatomite to the silty construction spoil, by weight, take 70 parts of earthwork excavation spoil particles, 25 parts of diatomite, put the raw materials into a horizontal ribbon mixer, and stir for 20 minutes to obtain sintered bone material.

[0091]In parts by weight, 80 parts of the above-mentioned sintered aggregate, 7 parts of animal hoof horn foaming agent, 7 parts of sodium bentonite, 7 parts of ordinary silicate glass shards and 20 parts of tap water are taken. Put the above-mentioned materials weighed into a ball mill, ball mill for 1 hour, add water to refine the mud, and inject it into a ...

Embodiment 3

[0098] For construction spoil, earthwork excavation spoil and silty construction spoil can be used in a mixed ratio of 1:1, without compounding.

[0099] Follow the steps below to implement:

[0100] Collect earth and stone excavation spoil, put the earth and stone excavation spoil into the mobile crusher, and crush it; collect muddy construction spoil, and pile up muddy construction spoil for 15 days. Pass the preliminarily treated construction spoil through a 6-mesh sieve to obtain construction spoil raw materials with a particle size not greater than 3.35mm.

[0101] In terms of parts by weight, 35 parts of excavation spoil for earth and stone; 35 parts of muddy construction spoil; 5 parts of animal hoof horn foaming agent; 7 parts of sodium bentonite; 5 parts of ordinary silicate glass fragments; 40 parts of tap water. Put the above-mentioned materials weighed into a ball mill, ball mill for 1 hour, add water to refine the mud, and inject it into a mold with a size of 100...

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Abstract

The invention relates to a method for sintering building spoils into foamed ceramics, comprising the following steps: (1) collecting building spoils, and processing the building spoils to prepare sintered aggregate; (2) preparing materials according to the following formula, and sintering 70-80 parts of aggregate, 5-7 parts of animal foaming agent, 5-7 parts of bentonite, 5-7 parts of glass fragments, 20-60 parts of water; (3) Put the components of step (2) into a ball mill for ball milling , adding water to smelt the mud, pouring it into a mold, forming it under pressure, and demoulding to obtain a green body; (4) drying the green body to obtain a dried green body, and then putting the dried green body into a muffle furnace for sintering to prepare foamed ceramics. Compared with the prior art, the invention processes and recombines the difficult-to-use building waste soil so that it can be used as raw material for sintered foamed ceramics, and at the same time improves the performance of traditional foamed ceramics.

Description

technical field [0001] The invention belongs to the field of special materials for construction engineering, and in particular relates to a method for sintering foamed ceramics from construction waste soil. Background technique [0002] Construction waste includes construction waste and construction spoil. Construction spoils mainly refer to the spoils and silt excavated by earth and rock in new construction and reconstruction projects in cities. Domestic construction waste accounts for 30% to 40% of the total urban waste every year. Therefore, the total amount of construction waste is huge, and the amount of these construction wastes is Arbitrary disposal not only occupies land resources, but also causes serious pollution and damage to water, air and soil. At present, almost no construction spoils have been properly treated, and the total utilization rate of construction wastes is less than 5%. The main reason is that the construction spoils are of poor quality and difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/02
CPCC04B33/1305C04B33/132C04B33/1352C04B38/02C04B2235/3418C04B2235/36C04B2235/66C04B2235/77C04B2235/96C04B2235/9607C04B38/0067C04B38/0074Y02P40/60
Inventor 肖建庄胡晓龙马志鸣
Owner TONGJI UNIV
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