Preparation method of environment-friendly porous rock granular material

A granular material and porous rock technology, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve problems such as unstable product performance, and achieve the effects of easy control of foaming process, improvement of soil compaction, and high ventilation pores

Active Publication Date: 2015-01-07
天津仁新玻璃材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pumice is originally an environmentally friendly material with heat insulation and other functions, and has a water absorption rate of 50-60%. If it is combined with pumice indiscriminately, it will easily lead to unstable product performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) At first, clean the glass surface of the waste CRT after removing the electron gun, and remove the fluorescent coating and the grid, then crush the screen glass, ball mill and pass through a 150-mesh standard sieve to obtain CRT screen glass powder;

[0022] 2) Next, get 95% of the CRT screen glass powder by mass fraction, 3% of the particle size is greater than 300 mesh sodium nitrate, 1.85% of the particle size is greater than 300 mesh lithium nitrate, and 0.15% of the particle size is larger than 300 mesh antimony trisulfide. After manganese dioxide, sodium nitrate, lithium nitrate and antimony trisulfide are mixed evenly, they are mixed with CRT screen glass powder and ball milled, put into a ball mill and ball milled until they can pass through a 150-mesh standard sieve to form a batch;

[0023] The grinding medium in the ball mill is pebbles or ceramic balls, the diameter of the grinding medium is less than 20mm, and the mass ratio of the grinding medium to the ...

Embodiment 2

[0028] 1) At first, clean the glass surface of the waste CRT after removing the electron gun, and remove the fluorescent coating and the grid, then crush the screen glass, ball mill and pass through a 250-mesh standard sieve to obtain CRT screen glass powder;

[0029] 2) Next, get 94% of the CRT screen glass powder by mass fraction, 5% of the particle size is greater than 300 mesh manganese dioxide, 0.1% of the particle size is greater than 300 mesh sodium nitrate, 0.7% of the particle size is larger than 300 mesh lithium nitrate, 0.2% of the For antimony trisulfide with a particle size greater than 300 mesh, first mix manganese dioxide, sodium nitrate, lithium nitrate and antimony trisulfide evenly, then mix it with CRT screen glass powder, and put it into a ball mill until it can pass through a 150-mesh standard sieve. , forming a batch;

[0030] The grinding medium in the ball mill is pebbles or ceramic balls, the diameter of the grinding medium is less than 20mm, and the m...

Embodiment 3

[0035] 1) At first, clean the glass surface of the waste CRT after removing the electron gun, and remove the fluorescent coating and the grid, then crush the screen glass, ball mill and pass through a 180-mesh standard sieve to obtain CRT screen glass powder;

[0036] 2) Next, get 97% of the CRT screen glass powder by mass fraction, 0.5% of the particle size is greater than 300 mesh manganese dioxide, 2% of the particle size is greater than 300 mesh sodium nitrate, 0.3% of the particle size is larger than 300 mesh lithium nitrate, 0.2% of For antimony trisulfide with a particle size greater than 300 mesh, first mix manganese dioxide, sodium nitrate, lithium nitrate and antimony trisulfide evenly, then mix it with CRT screen glass powder, and put it into a ball mill until it can pass through a 150-mesh standard sieve. , forming a batch;

[0037] The grinding medium in the ball mill is pebbles or ceramic balls, the diameter of the grinding medium is less than 20mm, and the mass ...

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Abstract

The invention relates to a preparation method of an environment-friendly porous rock granular material, which comprises the following steps: carrying out crushing and ball milling on screen glass to obtain CRT (cathode ray tube) screen glass powder; putting the CRT screen glass powder, manganese peroxide, sodium nitrate, lithium nitrate and antimony trisulfide in a ball mill, and carrying out ball milling to form a mixture; adding the mixture into a mold, sending into a roller hearth kiln, keeping the temperature for 5-10 minutes, and heating to 770-780 DEG C at the rate of 4-8 DEG C/minute; heating to 780-790 DEG C at the rate of 0.2-1 DEG C/minute; and cooling to 50-80 DEG C below at the rate of 80-200 DEG C/minute, crushing and screening to obtain the environment-friendly porous rock granular material. The environment-friendly porous rock granular material has the advantages of high strength, high water absorptivity, high aeration porosity, low foaming temperature and low use cost, and can not generate environment pollution in the production and use process. The environment-friendly porous rock granular material can be stored underground as excellent rain water, is a water purification material of rivers, lakes, reservoirs, fish ponds and the like, and can also be used as a heat-insulation fireproof construction material and other novel materials.

Description

technical field [0001] The invention relates to a method for manufacturing a porous rock material, in particular to a method for preparing an environmentally friendly porous rock particle material by using discarded CRT screen glass. Background technique [0002] China is a big country in the production and consumption of household electrical appliances. At present, China has entered the peak period of TV and computer replacement, and the annual elimination will reach more than 8 million sets, accounting for 55 to 65 wt% of the total weight of the cathode ray tube (CRT). ) urgently need to find a suitable resource-based solution. Especially the lead-free screen glass in CRT, if it is not recycled, it will not only occupy land, but also waste resources. How to turn the discarded screen glass into treasure has become a problem that needs to be solved urgently. [0003] Lian Huihui et al. (Lian Huihui, Yuan Wenyi, Wu Xiaoyang, et al. Using waste CRT screen glass as raw materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03B19/09
CPCY02P40/57C03C14/00C03B19/06
Inventor 付玉生胡亚春黄信谋许建国易家吉王建于丰陈晓
Owner 天津仁新玻璃材料有限公司
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