A kind of high-strength ceramic floor tile doped with coal gangue and preparation process thereof

A coal gangue and high-strength technology, which is applied in the field of high-strength ceramic floor tiles doped with coal gangue and its preparation technology, can solve the problems of limiting the utilization rate of coal gangue and low added value of products, so as to reduce the sintering temperature, save energy, reduce dependent effect

Inactive Publication Date: 2020-04-03
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the domestic utilization of coal gangue is mainly concentrated in the production of lightweight building materials as cementitious materials, but the low added value of the product limits the utilization rate of coal gangue

Method used

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  • A kind of high-strength ceramic floor tile doped with coal gangue and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation process for high-strength ceramic floor tiles doped with coal gangue:

[0024] (1) Coarse crushing: bake coal gangue and boiler slag at 150°C for 4 hours, and then pass through a crusher to coarsely crush them into particles below 10mm;

[0025] (2) Fine grinding and sieving: Put the coal gangue and boiler slag particles in the ball mill for 8 hours, and then pass through a 250-mesh sieve to obtain fine powder;

[0026] (3) Mixing: Weigh 62% of coal gangue fine powder, 34% of boiler slag fine powder and 4% of molybdenum trioxide (industrial grade molybdenum trioxide) by weight percentage, and mix them in a three-dimensional mixer for 10 hours to obtain Mixture;

[0027] (4) Blank making: Take the mixed material, add distilled water, press it with a hydraulic press under a pressure of 20MPa to obtain a green compact, and dry it at 150°C;

[0028] (5) Firing: The green body dried at 150°C is put into the muffle furnace to heat up according to the following...

Embodiment 2

[0034] A preparation process for high-strength ceramic floor tiles doped with coal gangue:

[0035] (1) Coarse crushing: bake coal gangue and boiler slag at 150°C for 4 hours, and then pass through a crusher to coarsely crush them into particles below 10mm;

[0036] (2) Fine grinding and sieving: Put the coal gangue and boiler slag particles in the ball mill for 8 hours, and then pass through a 250-mesh sieve to obtain fine powder;

[0037] (3) Mixing: Weigh 69% of coal gangue fine powder, 26% of boiler slag fine powder and 5% of molybdenum trioxide (industrial grade molybdenum trioxide) by weight percentage, and mix them in a three-dimensional mixer for 10 hours to obtain Mixture;

[0038] (4) Blank making: Take the mixed material, add distilled water, press it with a hydraulic press under a pressure of 25MPa to obtain a green compact, and dry it at 150°C;

[0039] (5) Firing: The green body dried at 150°C is put into the muffle furnace to heat up according to the following...

Embodiment 3

[0045] A preparation process for high-strength ceramic floor tiles doped with coal gangue:

[0046] (1) Coarse crushing: bake coal gangue and boiler slag at 150°C for 4 hours, and then pass through a crusher to coarsely crush them into particles below 10mm;

[0047] (2) Fine grinding and sieving: Put the coal gangue and boiler slag particles in the ball mill for 8 hours, and then pass through a 250-mesh sieve to obtain fine powder;

[0048](3) Mixing: Weigh 56% of coal gangue fine powder, 38% of boiler slag fine powder and 6% of molybdenum trioxide (industrial grade molybdenum trioxide) by weight percentage, and mix them in a three-dimensional mixer for 10 hours to obtain Mixture;

[0049] (4) Blank making: Take the mixed material, add distilled water, press it with a hydraulic press under a pressure of 25MPa to obtain a green compact, and dry it at 150°C;

[0050] (5) Firing: The green body dried at 150°C is put into the muffle furnace to heat up according to the following ...

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Abstract

The invention relates to a coal gangue-doped high-strength ceramic floor tile and a preparation technology thereof. The ceramic floor tile is prepared by using 55-70 wt% of coal gangue, 26-40 wt% of boiler cinder and 4-6 wt% of molybdenum trioxide as raw materials. During the preparation process, coal gangue and silicon dioxide and aluminium oxide in the boiler cinder undergo high-temperature sintering under the action of a catalyst so as to form mullite. In the ceramic floor tile sintering process, coal gangue and magnesium oxide, potassium oxide and sodium oxide in the boiler cinder can be used as sintering aids of the sintering reaction. Therefore, lots of liquid-phase substances are provided, mass transfer in the raw materials is promoted, the solid solution reaction is complete, and a solid phase and glass are fully bonded together. According to the ceramic floor tile, density is 1.6 g / cm<3>, bending strength reaches 165 Mpa, apparent porosity is lower than 0.5%, and water absorption is lower than 0.04%. The purposes of light weight and high strength of the finished product are achieved.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a high-strength ceramic floor tile doped with coal gangue and a preparation process thereof. Background technique [0002] Coal gangue is a kind of solid waste produced in the process of coal mining and washing, and its emissions account for about 10% to 15% of coal production. With the rapid development of industry, there are about 400 million tons of coal gangue piles in my country every year. In the environment, it not only takes up a lot of fertile land, but also greatly damages the ecological environment, especially not conducive to the growth of animals and plants. In recent years, the utilization of coal gangue in China is mainly concentrated in the production of lightweight building materials as cementitious materials, but the low added value of the product limits the utilization rate of coal gangue. Improving the comprehensive utilization value and utiliza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/32
CPCC04B33/132C04B33/32C04B2235/3256C04B2235/5436C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/96Y02P40/60
Inventor 王维陈位杰李玉芝刘伟刘海洋朱雁风
Owner HENAN UNIV OF SCI & TECH
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