Method for preparing building insulation materials using shell powder

A technology of building thermal insulation and fruit shell powder, which is applied in the field of building thermal insulation materials, can solve the problems of limited number of fruit shells, complex and high cost of multifunctional materials, achieve excellent performance, significant technical effects and economic advantages, and avoid environmental pollution. Effect

Active Publication Date: 2017-01-25
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned process of preparing multifunctional materials from nut shells is complex and costly, and the number of shells used each year is relatively limited. Most of them are discarded in the open air around the nut processing factory or buried in the surrounding pits, failing to fully recycle them. deal with

Method used

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  • Method for preparing building insulation materials using shell powder
  • Method for preparing building insulation materials using shell powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Ingredients: Weigh the ingredients according to the ratio of formula 1 in Table 1. The ratios are: feldspar powder 15kg, shale 60kg, sandstone 10kg, limestone 0kg, magnesite 5kg, water 61.2kg, control the particle size of raw materials less than 5cm;

[0043] (2) Ball mill mixing: Put the raw materials in (1) into a ball mill lined with 200 kilograms of corundum ceramics, stop the ball mill for 8 hours, discharge the slurry, put it into a 200L mixing drum, the slurry is 200-400 mesh, and mix 40 - 10kg of 120 mesh fruit shell powder is put into the mixing drum and stirred to obtain the evenly mixed slurry of the fruit shell;

[0044] (3) Granulation: use a laboratory-grade centrifugal granulator for the mixed slurry in (2), and granulate the slurry. The particle size range of the granulated powder is 1-3mm, and the moisture content is 8%;

[0045] (4) Firing: Place the granulated powder in (3) in a silicon carbide refractory mold, spread out flat, with a thickness o...

Embodiment 2

[0048] (1) Ingredients: Weigh the ingredients according to the ratio of formula 2 in Table 1. The ratios are: feldspar powder 13kg, shale 57kg, sandstone 11kg, limestone 1kg, magnesite 6kg, water 57.2kg, control the particle size of raw materials less than 5cm;

[0049] (2) Ball mill mixing: Put the raw materials in (1) into a ball mill lined with 200 kg of corundum ceramics, stop the ball mill for 10 hours, discharge the slurry, put it into a 200L mixing drum, and sieve the slurry with 200-400 mesh. Put 12kg of 120-160 mesh fruit shell powder into the mixing drum and stir to obtain a uniformly mixed slurry of fruit shells;

[0050] (3) Granulation: use a laboratory-grade centrifugal granulator for the mixed slurry in (2), and granulate the slurry. The particle size range of the granulated powder is 1-3mm, and the moisture content is 6%;

[0051] (4) Firing: Place the granulated powder in (3) in a silicon carbide refractory mold, spread out flat, with a thickness of 40 mm, he...

Embodiment 3

[0054] (1) Ingredients: Weigh the ingredients according to the ratio of formula 3 in Table 1. The ratios are: feldspar powder 13kg, shale 52kg, sandstone 12kg, limestone 2kg, magnesite 7kg, water 56.76kg, control the particle size of raw materials less than 5cm,

[0055] (2) Ball mill mixing: put the raw materials in (1) into a ball mill lined with 200 kg of corundum ceramics, stop the ball mill for 12 hours, discharge the slurry, put it into a 200L mixing drum, the slurry is 200-400 mesh, and mix 120 -14kg of 200 mesh fruit shell powder is put into the mixing drum,

[0056] (3) Granulation: use a laboratory-grade centrifugal granulator for the mixed slurry in (2), and granulate the slurry. The particle size range of the granulated powder is 1-1mm, and the moisture content is 5%.

[0057] (4) Firing: Place the granulated powder in (3) in a silicon carbide refractory mold, spread out flat, with a thickness of 50mm, heat, sinter and anneal in a heating furnace. The preheating, ...

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Abstract

The invention discloses a method for preparing building insulation materials using shell powder, wherein the building insulation materials are obtained by mixing the following raw materials and admixtures by mass percentage and stirring for slurrying, granulation by spray and high temperature firing: 50-60% of shale, 10-15% of feldspar, 10-13% of sandstone, 0-3% of limestone, 5-8% of magnesite and 10-16% of shell powder.The method for preparing building insulation materials not only utilizes the mine raw material and the waste shell powder to achieve the comprehensive utilization of the resources, and the product has fairly good mechanical property and heat preservation performance with low manufacturing cost and little environmental pollution.

Description

technical field [0001] The invention belongs to the field of building thermal insulation materials, and utilizes agricultural residues such as fruit shell powder to the maximum, adds low-grade feldspar, shale, sandstone, limestone, magnesite and other mine raw materials, mixes and sinters them to prepare building thermal insulation materials, and can use It meets the needs of urbanization and energy-saving construction of new rural buildings. Background technique [0002] At present, fruit shells are solid organic wastes left over from nut kernel processing. They have become a typical agricultural residue and are widely distributed in North China, including walnut shells, apricot shells, cherry shells, and jujube shells. The shells have a texture Hard, high hardness, high calorific value. The comprehensive utilization of fruit shells in our country is not yet sufficient. For example, walnuts were sold as dried fruits in the past, and the shells were difficult to recycle. No...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B33/132C04B33/13C04B33/32
CPCC04B33/13C04B33/132C04B33/32C04B38/0665C04B2235/3206C04B2235/3208C04B2235/3418C04B2235/3463C04B2235/349C04B2235/96C04B2235/9607C04B38/0067Y02P40/60
Inventor 田英良李思齐刘军徐长伟戚红
Owner BEIJING UNIV OF TECH
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