Method for preparing porous material by use of eggshell and waste glass

A technology for porous materials and waste glass, applied in the field of waste resource utilization, can solve problems such as no research reports on porous materials, and achieve the effects of effective recovery and resource reuse, short production cycle, and good thermal insulation performance.

Inactive Publication Date: 2015-05-13
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many existing methods for producing porous materials, and the sources and types of raw materials are also different, there are no relevant research reports on the preparation of porous materials using eggshells and waste glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a porous material from eggshells and waste glass, characterized in that it is prepared according to the following method:

[0027] (1) Waste glass pretreatment: the waste glass is fully washed with clear water 3 times and dried, then crushed by a crusher and a ball mill respectively, and ball-milled into glass powder with a particle size of 140 mesh;

[0028] (2) eggshell pretreatment: the cleaned and dried eggshells are placed in a ball mill and ball-milled into eggshell powder with a particle size of 20 mesh;

[0029] (3) Preparation of porous material: uniformly mix 1wt% of eggshell powder, 3.5wt% of additives and the rest of glass powder in proportion and put them into a rectangular stainless steel mold. Then, it was placed in a resistance furnace and heated to 800° C. and held for 20 minutes to form a porous material, which was cooled to room temperature with the furnace and released from the mold to obtain a porous material. The additives a...

Embodiment 2

[0032] A method for preparing a porous material from eggshells and waste glass, characterized in that it is prepared according to the following method:

[0033] (1) Waste glass pretreatment: The waste glass is fully washed with clear water 3 times and dried, then crushed by a crusher and a ball mill respectively, and ball-milled into a certain particle size of 170 mesh glass powder;

[0034] (2) Eggshell pretreatment: the cleaned and dried eggshell is placed in a ball mill and ball-milled into eggshell powder with a particle size of 100 mesh;

[0035] (3) Preparation of porous material: uniformly mix 2wt% of eggshell powder, 12wt% of additives and the rest of glass powder in proportion and put them into a rectangular stainless steel mould. Then, it was placed in a resistance furnace and heated to 900° C. and held for 40 minutes to form a porous material, which was cooled to room temperature with the furnace and released from the mold to obtain a porous material. The additives...

Embodiment 3

[0038] A method for preparing a porous material from eggshells and waste glass, characterized in that it is prepared according to the following method:

[0039] (1) Waste glass pretreatment: The waste glass is fully washed with clean water three times and dried, then crushed by a crusher and a ball mill respectively, and ball-milled into glass powder with a particle size of 200 mesh.

[0040] (2) Eggshell pretreatment: the cleaned and dried eggshells are ball milled in a ball mill to form eggshell powder with a particle size of 170 mesh.

[0041] (3) Preparation of porous material: uniformly mix 3wt% of eggshell powder, 12wt% of additives and the rest of glass powder in proportion and put them into a rectangular stainless steel mould. Then, it was placed in a resistance furnace and heated to 1000° C. and kept at a temperature of 50 minutes to form a porous material, which was cooled to room temperature with the furnace and released from the mold to obtain a porous material. T...

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PUM

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Abstract

The invention discloses a porous material with eggshell as a foaming agent and a preparation method of the porous material. The pretreated eggshell and waste glass are evenly mixed with an appropriate amount of additives in a certain ratio, and as the eggshell can be decomposed to release gas when heated, the porous material can be formed by virtue of sintering. The porous material produced by use of the method has the advantages of light weight, uniform pore diameter, high strength, good thermal insulation property, stable product quality, low cost and the like, and can be widely applied as a thermal insulation material for housing buildings. The porous material is prepared from easily available raw materials, the preparation process is simple and equipment operation is simple; the effective recovery and reutilization of the solid wastes are realized, the waste materials are changed into things of value, and therefore, remarkable economic and social benefits are produced.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste, in particular to a method for preparing porous materials by using eggshells and waste glass. Background technique [0002] Because of its high chemical stability and harmlessness, glass is widely used in house construction and in the manufacture of various daily necessities with high hygiene requirements, but it will inevitably produce a lot of glass waste because it is relatively easy to break. The massive accumulation of these waste glass not only seriously affects the surrounding environmental sanitation, but also a major safety hazard for human and animal activities. At present, the recycling technology of waste glass mainly includes: 1. Re-melting, 2. Production of glass fiber, 3. Substitution of natural minerals as flux, 4. Production of glass mosaics, artificial marble and granite, etc. [0003] At the same time, with the improvement of living standards and the rapid developme...

Claims

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Application Information

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IPC IPC(8): C03C11/00
CPCC03C11/007
Inventor 田如锦
Owner DALIAN JIAOTONG UNIVERSITY
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