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Ceramic frits incorporating CRT glass

a technology of ceramic frits and crt glass, which is applied in the field of ceramic frits, can solve the problems of limiting achieve the effects of reducing the amount of raw materials needed for frit production, reducing the emission of solid particles, and reducing the amount of raw materials

Inactive Publication Date: 2016-05-05
MUHAMMAD NAZIM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent provides ceramic frit compositions that contain a CRT glass component, such as CRT panel glass or CRT funnel glass. Using CRT glass in frit formulations can lead to higher efficiency in the manufacturing process, reduced emissions of solid particles, improved fuel economy, and recycling of CRT glass. The ceramic frit compositions can be used in ceramic coatings.

Problems solved by technology

The panel glass and / or funnel glass act as a supplier of oxides to the frit composition and thus limit the amount of raw materials needed for frit production.

Method used

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  • Ceramic frits incorporating CRT glass
  • Ceramic frits incorporating CRT glass
  • Ceramic frits incorporating CRT glass

Examples

Experimental program
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Effect test

example 1

Manufacture of Ceramic Frits

[0023]Manufacturing Process

[0024]Quality Control of Raw Materials Used

[0025]All raw materials used in the manufacture are controlled as to: 1—Color Burn; 2—Fusibility; 3—Grain Size and 4—Chemical Analysis (usually guaranteed by the supplier)

[0026]Weighing and Mixing

[0027]The raw materials are stored, weighed out and mixed as per the formulation to be used to form furnace feed material known as batch and mixed for approximately 20 minutes.

[0028]After this, the batch is discharged from the mixer and transferred to the feeding unit of the fusion furnace by mechanical transport, either by bucket elevator, conveyor or other means.

[0029]Fusion

[0030]The fusion is done in a continuous furnace fed by a screw conveyor with adjustable speed. The volume of the feed mixture and the temperature is dependent upon the formulation that is being produced. In an embodiment, the temperature is between 1350 to 1450 degrees Celsius.

[0031]The furnace is fired by natural gas wit...

example 2

Engobe and Cover Formulations

[0046]The engobe coating compositions are formulated with approximately 25% of frit, ground and mixed with other raw materials, and applied to the piece in a layer about 300 gram per square meter.

[0047]The cover coating compositions are made with approximately 90% of frit, ground and mixed with other raw materials and applied to the piece with engobe already applied, in a layer about 220 gram per square meter.

[0048]The ceramic tiles are fired or burned at a temperature of approximately 1050 degrees Celsius, to achieve the required consistence and fix the engobe and the cover on the ceramic tiles.

[0049]FIG. 3 shows a cross-sectional view of an engobe layer and a glaze and decoration layer applied to a compressed clay support.

[0050]Accordingly, the application of the frit at the end product is a very small percentage. The one square meter of ceramic tiles has the weight of approx 14 kg, approx 13.5 kg of clay, 0.3 kg of Engobe (0.075 kg frit) and 0.22 kg o...

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Abstract

Ceramic frit compositions including a cathode ray tube (CRT) glass component and methods for their manufacture are provided. Also provided are coating compositions including these ceramic frit compositions.

Description

BACKGROUND[0001]As used herein, a ceramic frit is a ceramic composition in a powdered or granulated state. The ceramic may be a glass. Ceramic frits are conventionally obtained from the mixing of raw materials such as feldspars (which supply Na2O, K2O and SiO2), barium oxide (BaO), strontium oxide (SrO), and sodium oxide (Na2O). The raw materials are then fused in a furnace and rapidly quenched in water. Frit compositions can be varied according to the quantities and types of oxides desired in their formulation. Frits are used mostly in the vitrifying of flooring, glazed ceramics and other ceramic products. Frits can also be used in enameling of Iron or Steel.[0002]Several strategies have been proposed for recycling of Cathode Ray Tubes (CRTs). CRTs typically include several different types of glass. The glass of the panel portion of the CRT is predominately SiO2 and often includes BaO and SrO. The glass of the funnel portion of the CRT is also predominately SiO2 and often has a hig...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C03C8/20C03C1/00C03C8/12
CPCC03C8/20C03C8/12C03C1/02C03C2209/00C03C1/00C03C1/002C03C3/105
Inventor MUHAMMAD, NAZIM
Owner MUHAMMAD NAZIM