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A kind of porous ceramic brick and its preparation method

A ceramic brick and drying technology, which is applied to ceramic products, ceramic material production, clay products and other directions, can solve the problems of high preparation cost and complicated preparation process, and achieve the effect of simple preparation method, easy availability of raw materials and reduction of production cost.

Active Publication Date: 2021-05-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a ceramic tile with connected pores and a preparation method thereof, which can effectively utilize municipal sludge, and prepare ceramic tiles with connected pores by using municipal sludge as a raw material to solve the problem of existing problems. The preparation process that some methods exist is complicated, the problem of high preparation cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A ceramic tile with connected holes, the preparation method of which comprises the following steps:

[0033] (1) Dry the municipal sludge at 300°C for 15 hours, then continue to dry at 470°C for 2 hours to obtain dry sludge, then add an equal volume of water to the dry sludge and mix well to obtain pretreated sludge ;

[0034] (2) polydiphenylmethane diisocyanate and polyester are mixed according to a mass ratio of 5:1 to obtain a polyurethane prepolymer;

[0035] (3) The polyurethane prepolymer prepared in step (2) is added in the pretreatment sludge in step (1), and catalyst, foam stabilizer and fiber pore-forming agent are added thereto to obtain a mixture, and the mixture is stirred until Foaming reaction finishes, stops stirring, obtains precursor, and wherein, the mass ratio of pretreatment sludge, polyurethane prepolymer, catalyzer, foam stabilizer and fiber pore-forming agent is 1000:3:1:5:10, and catalyzer is Triethylenediamine, the foam stabilizer is liquid ...

Embodiment 2

[0038] A ceramic tile with connected holes, the preparation method of which comprises the following steps:

[0039] (1) Dry the municipal sludge at 330°C for 18 hours, then continue to dry at 520°C for 3 hours to obtain dried sludge, then add an equal volume of water to the dried sludge and mix well to obtain pretreated sludge ;

[0040] (2) polydiphenylmethane diisocyanate and polyester are mixed according to a mass ratio of 6:1 to obtain a polyurethane prepolymer;

[0041] (3) The polyurethane prepolymer prepared in step (2) is added in the pretreatment sludge in step (1), and catalyst, foam stabilizer and fiber pore-forming agent are added thereto to obtain a mixture, and the mixture is stirred until Foaming reaction finishes, stops stirring, obtains precursor, and wherein, the mass ratio of pretreatment sludge, polyurethane prepolymer, catalyzer, foam stabilizer and fiber pore-forming agent is 900:2:1:5:8, and catalyzer is Triethylenediamine, foam stabilizer is liquid so...

Embodiment 3

[0044] A ceramic tile with connected holes, the preparation method of which comprises the following steps:

[0045] (1) Dry the municipal sludge at 300°C for 16 hours, then continue to dry at 500°C for 3 hours to obtain dried sludge, then add an equal volume of water to the dried sludge and mix well to obtain pretreated sludge ;

[0046] (2) polydiphenylmethane diisocyanate and polyester are mixed according to a mass ratio of 7:1 to obtain a polyurethane prepolymer;

[0047] (3) The polyurethane prepolymer prepared in step (2) is added in the pretreatment sludge in step (1), and catalyst, foam stabilizer and fiber pore-forming agent are added thereto to obtain a mixture, and the mixture is stirred until Foaming reaction finishes, stops stirring, obtains precursor, and wherein, the mass ratio of pretreatment sludge, polyurethane prepolymer, catalyzer, foam stabilizer and fiber pore-forming agent is 1000:2:1:6:10, and catalyzer is Triethylenediamine, the foam stabilizer is liq...

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Abstract

The invention provides a ceramic brick with connected pores and a preparation method thereof. The preparation method comprises the following steps: drying municipal sludge to obtain dry sludge, then adding water to the dry sludge and mixing to obtain pretreated sludge ; Mix polydiphenylmethane diisocyanate and polyester to obtain a polyurethane prepolymer; add the prepared polyurethane prepolymer to the pretreatment sludge, and add catalyst, foam stabilizer and fiber pore-forming agent to it , to obtain a mixture, stir the mixture until the end of the foaming reaction, stop stirring, and obtain a precursor; dry the precursor at 500-700°C for 4-6h to obtain. The preparation method uses urban sludge as a raw material, and the preparation process is simple and easy to operate, which can effectively solve the problems of complicated preparation process and high preparation cost in the existing method.

Description

technical field [0001] The invention belongs to the field of ceramic brick preparation, and in particular relates to a ceramic brick with connected holes and a preparation method thereof. Background technique [0002] With the development of the economy and the improvement of people's living standards, my country will enter the golden age of the sewage treatment market in the next few years. Thousands of sewage treatment plants will be built, which will provide a greater guarantee for the quality of people's domestic water. At the same time, with the improvement of sewage treatment rate, the output of urban sludge is also increasing, and the problem of sludge treatment and disposal is becoming more and more prominent. As an inevitable product of sewage treatment, sludge with a moisture content as high as 99% and a huge amount has become an urgent need. Problems to deal with. [0003] Sludge is mainly sedimentary substances produced by sewage treatment, including solid parti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/06C04B33/30C04B33/32
CPCC04B33/1305C04B33/1315C04B33/1321C04B33/30C04B33/32C04B38/0675C04B38/0074C04B38/0067Y02P40/60
Inventor 林彬罗天勇肖扬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA