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Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass

A technology of screen glass and microcrystalline stone, which is applied in the field of preparing nano-microcrystalline stone plate by using CRT screen glass, can solve the problems of inability to use architectural decorative plates on a large scale, low addition of CRT glass residues, etc., and achieves significant decorative effect and reduced High cost investment, high wear resistance effect

Active Publication Date: 2015-04-29
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

The addition of CRT glass residues in this method is low, and the prepared glass-ceramic contains some rare earth substances harmful to the environment and human body, so it cannot be used for large-scale building decorative plates

Method used

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  • Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass
  • Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass
  • Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Preparation of Concentrated Colorant

[0039] 1) First, clean the glass surface of the waste cathode ray tube after removing the electron gun, and remove the fluorescent coating and grid, then put the screen glass into a ball mill to crush, and pass through a 50-mesh standard sieve to obtain CRT screen glass powder;

[0040] The grinding medium in the ball mill is a zirconia ball, the diameter of the grinding medium is less than 5mm, and the mass ratio of the grinding medium to the feed material is controlled to be 2:1 when charging;

[0041] 2) Then, according to mass fraction, 75% CRT screen glass powder, 12% manganese dioxide, 5% ferric oxide, 1% nickel oxide, 3% calcium carbonate, 4% aluminum oxide Put it into a V-shaped strong mixer, mix until the uniformity is greater than 98%, and form a batch;

[0042] Manganese dioxide, ferric oxide, calcium carbonate, nickel oxide, aluminum oxide, carboxymethyl cellulose, and sodium silicate are all industrial raw mat...

Embodiment 2

[0067] Step 1: Preparation of Concentrated Colorant

[0068] 1) First, clean the glass surface of the waste cathode ray tube after removing the electron gun, and remove the fluorescent coating and grid, then put the screen glass into a ball mill to crush, and pass through an 80-mesh standard sieve to obtain CRT screen glass powder;

[0069] The grinding medium in the ball mill is a zirconia ball, the diameter of the grinding medium is less than 5mm, and the mass ratio of the grinding medium to the feed material is controlled to be 2:1 when charging;

[0070] 2) then, get 8% manganese dioxide by mass fraction, 3% ferric oxide, 1% nickel oxide, 3% calcium carbonate, 5% aluminum oxide mixes with 80% again Mix the CRT screen glass powder into a V-shaped strong mixer, and mix until the uniformity is greater than 98% to form a batch;

[0071] Manganese dioxide, ferric oxide, calcium carbonate, nickel oxide, aluminum oxide, carboxymethyl cellulose, and sodium silicate are all indust...

Embodiment 3

[0093] Step 1: Preparation of Concentrated Colorant

[0094] 1) First, clean the glass surface of the waste cathode ray tube after removing the electron gun, and remove the fluorescent coating and grid, then put the screen glass into a ball mill to crush, and pass through a 60-mesh standard sieve to obtain CRT screen glass powder;

[0095] The grinding medium in the ball mill is a zirconia ball, the diameter of the grinding medium is less than 5mm, and the mass ratio of the grinding medium to the feed material is controlled to be 2:1 when charging;

[0096] 2) then, get 7% manganese dioxide by mass fraction, 3% ferric oxide, 0.5% nickel oxide, 3% calcium carbonate, 3.5% aluminum sesquioxide mixes again with 83% Mix the CRT screen glass powder into a V-shaped strong mixer, and mix until the uniformity is greater than 98% to form a batch;

[0097] Manganese dioxide, ferric oxide, calcium carbonate, nickel oxide, aluminum oxide, carboxymethyl cellulose, and sodium silicate are a...

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Abstract

The invention relates to a method for preparing a nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass. The method disclosed by the invention comprises the following steps: firstly, crushing screen glass of a waste cathode ray tube, an electronic gun of which is removed, and melting by adding auxiliary raw materials to prepare concentrated pigment; and then, mixing and forming CRT screen glass power and concentrated pigment powder according to the mass fraction, heating, crystallizing, and cooling to obtain nano-microlite. The nano-microlite plate prepared by using the preparation method disclosed by the invention is low in porosity and water absorption, high in strength, small in colour difference, simple in sintering process and low in cost; the utilization rate of the CRT screen glass is high; furthermore, pollution to the environment cannot be generated in the production and use processes; the nano-microlite plate is high in acid-base resistance property and abrasion resistance and free from radioactivity harm, and can be used as a novel high-grade decorative plate; the preparation method disclosed by the invention is simple in operation process and low in cost; the production cost of nano-microlite can be effectively reduced; the environment is protected; wastes are turned into wealth; and thus, the method disclosed by the invention is applied to large-scale industrialization production and has obvious economic benefits and environment-friendly benefits.

Description

technical field [0001] The invention relates to a method for manufacturing nano-microcrystalline stone, in particular to a method for preparing nano-crystalline stone plates by using CRT screen glass. technical background [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] Li Yingxia and others used waste glass and slag as the main raw materials to prepare glass-ceramics by high-temperature melting method. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C6/02
Inventor 付玉生胡亚春黄信谋许建国易家吉王健于丰陈晓
Owner 天津仁新玻璃材料有限公司
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