CN113372104B

CN113372104B - Vitrified tile and preparation method thereof

Info

Publication number: CN113372104B
Application number: CN202110823432.2A
Authority: CN
Inventors: 王婷婷; 曾晓; 高源�
Original assignee: Yantai Hejing Ceramic New Materials Co ltd
Current assignee: Shandong Hejing Ceramic New Material Industry Technology Research Institute Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-10-11
Anticipated expiration: 2041-07-21
Also published as: CN113372104A

Abstract

The invention relates to a vitrified brick and a preparation method thereof, wherein a waste fused quartz crucible is used as a main raw material, kaolin, feldspar and talc are matched for ball milling, high-content silicon dioxide in the raw material can increase the hardness and wear resistance of a vitrified brick blank, meanwhile, a particle grading mode is adopted, particles with different particle sizes are used for mutually filling gaps, the blank forming and firing are facilitated, and a vitrified brick with high density, low porosity and high strength can be obtained under the condition of reducing the thickness of the vitrified brick.

Description

Vitrified tile and preparation method thereof

Technical Field

The invention relates to the field of building ceramics, in particular to a vitrified tile and a preparation method thereof.

Background

The fused silica crucible is a container for filling silicon materials in the polycrystalline silicon ingot casting process, and is a key consumable material which is discarded after being used once, and the storage amount of the discarded fused silica crucible is correspondingly increased continuously. The fused silica crucible is converted to cristobalite after the ingot is completed, becomes an industrial waste, and is generally used as a building filler after simple crushing. As industrial waste, the treatment cost is generally required to be paid, so that the resource waste is caused, and the ingot casting cost is increased. The cristobalite is a high-temperature homogeneous isomer of quartz, and has excellent performances of corrosion resistance, thermal shock resistance, bright color, scratch resistance, scrubbing resistance, low thermal expansion coefficient, acid and alkali resistance, high thermal stability, high insulating property and the like.

The vitrified tile is one of main products of building ceramics, and the vitrified tile becomes the mainstream of home decoration at present. The general vitrified tiles use traditional high-quality raw materials such as feldspar, silica, kaolin and the like, the product cost is high, and the traditional high-quality mineral raw material resources are gradually exhausted, and the price is gradually increased. At present, the thickness of the vitrified tile is 10-15mm, and if the thickness is reduced, the vitrified tile is in risks of deformation, cracking, breakage and the like in the manufacturing process.

Disclosure of Invention

The invention provides a vitrified tile and a preparation method thereof, wherein a waste crucible block after a fused quartz crucible is used as a main raw material, and an ultrathin vitrified tile is prepared in a particle grading mode, and the preparation cost of the vitrified tile is reduced.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation method of a vitrified tile comprises the following raw materials: 60-70 parts of fused quartz crucible waste, 10-20 parts of kaolin, 15-20 parts of feldspar and 2-5 parts of talc; the preparation process comprises the following steps:

the first step is as follows: crushing the fused quartz crucible waste into powder to obtain a quartz granular material containing silicon dioxide;

the second step is that: mixing and ball-milling the quartz particle material, the kaolin, the feldspar and the talc according to the proportion of 60-70 parts, 10-20 parts, 15-20 parts and 2-5 parts respectively, and then discharging slurry according to particle grading to obtain a plurality of batches of slurry with particle gradient difference;

the third step: uniformly mixing the plurality of batches of mud and ageing for 24 hours to obtain the mud;

the fourth step: mixing the slurry with 1% of water-soluble polyvinyl alcohol, granulating by a spray dryer to obtain powder with the water content of 5-10%, and ageing the powder for 24 hours;

the fifth step: injecting the aged powder into a mold, and performing compression molding to obtain a vitrified tile green body with the thickness of 5-7 mm;

and a sixth step: and (3) preserving the heat of the green vitrified tile at 400 ℃, then heating to 1100-1200 ℃ for sintering, and gradually cooling to room temperature after sintering to obtain a finished vitrified tile.

Preferably, the particle grading mode is as follows: discharging ball milling slurry in three batches, and passing the slurry through a screen for the first time, wherein the weight of the slurry accounts for 60%; continuing ball milling for the second slurry discharge, wherein the weight accounts for 30 percent; and (5) continuing ball milling to discharge slurry for the third time, wherein the weight of the slurry accounts for 10 percent.

Preferably, the mesh number of the screen is 200-300 meshes, the grain size of the second slurry discharge reaches 10-20 microns, and the grain size of the third slurry discharge reaches 3-6 microns.

Preferably, the pressing pressure in the fifth step is 30 to 60MPa.

Preferably, the heat-retaining time and the firing time in the sixth step are each 1 hour.

The invention also provides a vitrified tile which is prepared by using the preparation method of any scheme.

The invention can effectively utilize the waste fused silica crucible, solves the problem of the cost of processing the waste fused silica crucible by ingot enterprises, converts the waste into raw materials, realizes resource regeneration, ensures that the content of silicon dioxide in the waste fused silica crucible reaches more than 99 percent, can increase the hardness and the wear resistance of the vitrified tile blank by improving the content of the silicon dioxide, adopts a particle grading mode, utilizes particles with different particle diameters to fill gaps mutually, is beneficial to forming and firing the blank, and can obtain the vitrified tile with high density, low porosity and high strength under the condition of reducing the thickness of the vitrified tile.

Drawings

FIG. 1 is a diagram of a glass block according to the present invention.

Detailed Description

The embodiments of the present invention are described in the following detailed description, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

To facilitate an understanding of the invention for those skilled in the art, a specific embodiment thereof will be described below with reference to the accompanying drawings.

Example one

A preparation method of a vitrified tile comprises the following raw materials: 40-50 parts of fused quartz crucible waste, 30-40 parts of kaolin, 5-10 parts of feldspar and 10-15 parts of talc in parts by weight; the preparation process comprises the following steps:

the first step is as follows: crushing the fused quartz crucible waste into powder by a crusher to obtain a quartz granular material with the silicon dioxide content of more than 99 percent;

the second step is that: mixing and ball-milling the crushed quartz particle material, kaolin, feldspar and talc according to the proportion of 40-50 parts, 30-40 parts, 5-10 parts and 10-15 parts respectively, then discharging slurry according to the particle size distribution, and passing the slurry through a 200-300-mesh screen for the first time, wherein the weight accounts for 60%; discharging 30% of slurry with the particle size of 10-20 microns; discharging the residual slurry with the particle size of 3-6 microns to obtain three batches of slurry with particle gradient difference;

the third step: uniformly mixing the three batches of slurry and ageing for 24 hours to obtain slurry;

the fifth step: injecting the aged powder into a mold, and pressing and molding under the pressure of 30-60MPa to obtain a vitrified tile green body with the thickness of 5-7 mm;

and a sixth step: and (3) preserving the heat of the obtained vitrified tile green body for 1 hour at the temperature of 400 ℃, then heating to 1100-1200 ℃ for sintering for 1 hour, and gradually cooling to room temperature after sintering to obtain a vitrified tile finished product.

The performance parameters of the vitrified tile obtained in the first embodiment are as follows:

performance parameter	Thickness (mm)	Density (g/cm) ³ )	Water absorption rate	Modulus of rupture (N)	Breaking Strength (N)
						Example one	5	2.419	0.30％	38	2180

Example two

A preparation method of a vitrified tile comprises the following raw materials: 50-60 parts of fused quartz crucible waste, 20-30 parts of kaolin, 10-15 parts of feldspar and 5-10 parts of talc; the preparation process comprises the following steps:

the second step is that: mixing and ball-milling the crushed quartz particle material, kaolin, feldspar and talc according to the proportion of 50-60 parts, 20-30 parts, 10-15 parts and 5-10 parts respectively, then performing slurry discharge according to the particle size distribution, and enabling the slurry to pass through a 200-300-mesh screen for the first time, wherein the weight accounts for 60%; the grain diameter reaches 10-20 microns and 30 percent of pulp is discharged; discharging the residual slurry with the particle size of 3-6 microns to obtain three batches of slurry with particle gradient difference;

The performance parameters of the vitrified tile obtained in the second embodiment are as follows:

performance parameter	Thickness (mm)	Density (g/cm) ³ )	Water absorption rate	Modulus of rupture (N)	Breaking Strength (N)
						Example two	5	2.675	0.15％	42	2420

EXAMPLE III

A preparation method of a vitrified tile comprises the following raw materials: 60-70 parts of fused quartz crucible waste, 10-20 parts of kaolin, 15-20 parts of feldspar and 2-5 parts of talc in parts by weight; the preparation process comprises the following steps:

the first step is as follows: crushing the fused quartz crucible waste into powder by a crusher to obtain a quartz granular material with the silicon dioxide content of more than 99%;

the second step: mixing and ball-milling the crushed quartz particle material, kaolin, feldspar and talc according to the proportion of 60-70 parts, 10-20 parts, 15-20 parts and 2-5 parts respectively, then performing slurry discharge according to particle grading, and performing slurry discharge for the first time through a 200-300-mesh screen, wherein the weight accounts for 60%; discharging 30% of slurry with the particle size of 10-20 microns; discharging the residual slurry with the particle size of 3-6 microns to obtain three batches of slurry with particle gradient difference;

The performance parameters of the vitrified tile obtained in the third embodiment are as follows:

performance parameter	Thickness (mm)	Density (g/cm) ³ )	Water absorption rate	Modulus of rupture (N)	Breaking Strength (N)
						EXAMPLE III	5	2.824	0.06％	47	2750

Example four

A preparation method of a vitrified tile comprises the following raw materials: 70-80 parts of fused quartz crucible waste, 0-5 parts of kaolin, 20-25 parts of feldspar and 2-5 parts of talc; the preparation process comprises the following steps:

the second step: mixing and ball-milling the crushed quartz particle material, kaolin, feldspar and talc according to the proportion of 70-80 parts, 0-5 parts, 20-25 parts and 2-5 parts respectively, then performing slurry discharge according to particle grading, and performing slurry discharge for the first time through a 200-300-mesh screen, wherein the weight accounts for 60%; discharging 30% of slurry with the particle size of 10-20 microns; discharging the residual slurry with the particle size of 3-6 microns to obtain three batches of slurry with particle gradient difference;

The performance parameters of the vitrified tile obtained in the fourth example are as follows:

performance parameter	Thickness (mm)	Density (g/cm) ³ )	Water absorption rate	Modulus of rupture (N)	Breaking Strength (N)
						Example four	5	2.839	0.05％	44	2540

The performance parameters of the vitrified tiles produced by combining the four examples and the traditional technology are compared as follows:

performance parameter	Example one	Example two	EXAMPLE III	Example four	Traditional product
						Thickness (mm)	5	5	5	5	10
Density (g/cm) ³ )	2.419	2.675	2.824	2.839	2.258
						Water absorption rate	0.30％	0.15％	0.06％	0.05％	≤0.5％
Modulus of rupture (N)	38	42	47	44	≥35
						Breaking Strength (N)	2180	2420	2750	2540	1800

The weight comparison data of the finished product corresponding to the slurry particle composition (200-300 meshes: 10-20 microns: 3-6 microns) under the condition of the same proportioning process are as follows:

the ratio of the components	8:2:0	7:3:0	6:3:1	5:3:2
					Weight of finished product (Kg)	8.64	9.28	10.39	10.45

Compared with comprehensive experimental data, the raw material proportion of the third embodiment is adopted, namely 60-70 parts of fused quartz crucible waste, 10-20 parts of kaolin, 15-20 parts of feldspar and 2-5 parts of talc, and the slurry particle grading (200-300 meshes: 10-20 microns: 3-6 microns) adopts the following components in proportion of 6.

The invention can effectively utilize the waste fused silica crucible, solves the problem of the cost of processing the waste fused silica crucible by ingot enterprises, converts the waste into raw materials, realizes resource regeneration, ensures that the content of silicon dioxide in the waste fused silica crucible reaches more than 99 percent, can increase the hardness and the wear resistance of the vitrified tile blank by improving the content of the silicon dioxide, adopts a particle grading mode, utilizes particles with different particle diameters to fill gaps mutually, is beneficial to forming and firing the blank, and can obtain the vitrified tile with high density, low porosity and high strength under the condition of reducing the thickness of the vitrified tile. The invention reduces the energy use in the production process, achieves the aim of saving resources and has greater economic value and social significance.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed. The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The preparation method of the vitrified tile is characterized by comprising the following raw materials: 60-70 parts of fused quartz crucible waste, 10-20 parts of kaolin, 15-20 parts of feldspar and 2-5 parts of talc in parts by weight; the preparation process comprises the following steps:

the second step is that: mixing and ball-milling the quartz particle material, the kaolin, the feldspar and the talc according to the proportion of 60-70 parts, 10-20 parts, 15-20 parts and 2-5 parts respectively, and then discharging slurry according to particle grading to obtain a plurality of batches of slurry with particle gradient difference; the particle grading mode is as follows: discharging ball-milling slurry in three batches, and screening the slurry through a screen for the first time, wherein the weight of the slurry accounts for 60 percent; continuing ball milling for the second slurry discharge, wherein the weight accounts for 30 percent; continuing ball milling and discharging slurry for the third time, wherein the weight is 10 percent; the mesh number of the screen is 200-300 meshes, the grain size of the second slurry discharge reaches 10-20 microns, and the grain size of the third slurry discharge reaches 3-6 microns;

and a sixth step: and (3) preserving the heat of the green vitrified tile at 400 ℃, heating to 1100-1200 ℃ for sintering, and gradually cooling to room temperature after sintering to obtain a finished vitrified tile, wherein the heat preservation time and the sintering time are respectively 1 hour.

2. The method for manufacturing a vitrified tile according to claim 1, wherein the pressing pressure in the fifth step is 30 to 60MPa.

3. A vitrified tile produced by the production method according to any one of claims 1 to 2.