Method for sintering building spoil into foamed ceramic

A technology for building spoil and ceramics, which is applied in the direction of ceramic products, ceramic material production, clay products, etc., can solve the problem of building spoils not being properly handled and so on.

Active Publication Date: 2020-05-12
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 pr

Method used

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  • Method for sintering building spoil into foamed ceramic
  • Method for sintering building spoil into foamed ceramic

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0077] Example 1

[0078] The construction spoil is selected from earth and stone excavation spoil, and fly ash is used to mix the spoil.

[0079] Follow the steps below to implement:

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

[0081] In terms of parts by weight, take 80 parts of the above-mentioned sintered aggregate, 5 parts of animal hoof foaming agent, 5 parts of sodium bentonite, 5 parts of ordinary silicate glass fragments, and 60 parts of tap water. Put the weighed above-mentioned materials into a ball mill, ball mill for ...

Example Embodiment

[0087] Example 2

[0088] The construction spoil is selected from the silty construction spoil and is prepared by diatomite.

[0089] Follow the steps below to implement:

[0090] The silt construction spoil is collected, and the silt construction spoil is stacked for 15 days, passed through a 6-mesh sieve, and screened to obtain construction spoil raw materials with a particle size of not more than 3.35mm. Add diatomaceous earth to the silt construction spoil, take 70 parts of earth and stone excavation spoil particles and 25 parts of diatomaceous earth in parts by weight, put the raw materials into the horizontal spiral mixer and mix for 20 minutes to obtain sintered bone material.

[0091] In terms of parts by weight, take 80 parts of the above-mentioned sintered aggregate, 7 parts of animal hoof foaming agent, 7 parts of sodium bentonite, 7 parts of ordinary silicate glass fragments, and 20 parts of tap water. Put the weighed above-mentioned materials into a ball mill, ball mill...

Example Embodiment

[0097] Example 3

[0098] The construction spoil is selected from earth and stone excavation spoil and silt construction spoil, which can be used in a mixture ratio of 1:1, without compounding.

[0099] Follow the steps below to implement:

[0100] Collect earth and stone excavation spoil, and put the earth and stone excavation spoil into a mobile crusher for crushing treatment; collect silt construction spoil, and stack the silt construction spoil for 15 days. The preliminarily treated construction spoil is passed through a 6-mesh sieve, and the construction spoil raw materials with a particle size not greater than 3.35mm are obtained by screening.

[0101] In terms of parts by weight, take 35 parts of earth and stone excavation spoil; 35 parts of silt construction spoil; 5 parts of animal hoof foaming agent; 7 parts of sodium bentonite; 5 parts of ordinary silicate glass fragments; 40 parts of tap water. Put the weighed above-mentioned materials into a ball mill, ball mill for 1 ho...

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Abstract

The invention relates to a method for sintering building spoil into foamed ceramic. The method comprises the following steps: (1) collecting the building spoil, and treating the building spoil so as to prepare sintered aggregate; (2) preparing materials according to the following formula: 70-80 parts of the sintered aggregate, 5-7 parts of an animal foaming agent, 5-7 parts of bentonite, 5-7 partsof glass fragments and 20-60 parts of water; (3) putting the components in the step (2) into a ball mill for ball milling, adding water for pugging, injecting an obtained material into a mold, carrying out pressure molding, and carrying out demolding so as to obtain a green body; and (4) drying the green body so as to obtain a dried green body, then placing the dried green body into a muffle furnace, and carrying out sintering so as to prepare the foamed ceramic. Compared with the prior art, the method provided by the invention has the following advantages: the building spoil which is difficult to be utilized is treated and compounded, so the building spoil can be used as a raw material for sintering the foamed ceramic; meanwhile, the performance of traditional foamed ceramic is improved.

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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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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