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Perforated sound-absorbing ceramic prepared by taking low-grade non-metal associated ore as main raw material and preparation method thereof

A main raw material, non-metal technology, applied in the field of sound-absorbing materials, can solve the problems of high price, poor safety, high added value, and achieve the effects of excellent sound-absorbing performance, good stability and high strength

Active Publication Date: 2021-04-13
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of high added value of high-grade minerals in the prior art, poor safety and high price of traditional sound-absorbing materials, the present invention provides a kind of low-grade non-metallic tuff and magmatic soil associated ore as main raw materials, which are prepared by microwave material science workstation The method of perforated sound-absorbing ceramics realizes the application of low-grade non-metallic associated minerals in perforated inorganic mineral sound-absorbing materials

Method used

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  • Perforated sound-absorbing ceramic prepared by taking low-grade non-metal associated ore as main raw material and preparation method thereof

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preparation example Construction

[0028] A method for preparing perforated sound-absorbing ceramics prepared from low-grade non-metallic associated ore as the main raw material, comprising the following steps:

[0029] 1) Weigh tuff, magmatic soil, glass powder, silicon carbide and carbon powder respectively according to the set mass, mix them evenly, spray into sodium bicarbonate solution with a mass fraction of 5% to activate, mix and granulate;

[0030] 2) Pour the wet pellets obtained in step 1) into a 16×16cm square mold, hold the pressure for 10 minutes under a pressure of 15-20Mpa, and form a green body;

[0031] 3) Dry the green body obtained in step 2) in a drying oven at 105°C for 12-18 hours, then move it into the furnace cavity of the microwave material science workstation, and make ceramic samples according to the set sintering and heat preservation system; the samples are analyzed by modern The test technology test obtains the apparent porosity and the average sound absorption coefficient of the ...

Embodiment 1

[0036] A perforated sound-absorbing ceramic prepared with low-grade non-metallic associated minerals as the main raw material: take 1900g of tuff, 700g of magmatic soil, 208g of glass powder, 30g of silicon carbide and 48g of carbon powder and mix them evenly, and then inject 5% carbonic acid Sodium hydrogen solution is activated, mixed, and granulated; the pellets are kept at a pressure of 15Mpa for 10 minutes to obtain a green body; the green body is dried in a drying oven at 105°C for 14 hours, and then moved into the furnace cavity of the microwave material science workstation, and set for sintering The temperature is 1190°C, and the holding time is 2 hours; the ceramic samples obtained by sintering are cut into disks of specific sizes, and then their related properties are tested by modern analysis and testing techniques.

[0037] The properties of perforated sound-absorbing ceramics prepared with low-grade non-metallic associated ore as the main raw material are as follow...

Embodiment 2

[0039] A perforated sound-absorbing ceramic prepared with low-grade non-metallic associated minerals as the main raw material: take 2100g of tuff, 700g of magmatic soil, 224g of glass powder, 42g of silicon carbide and 70g of carbon powder and mix them evenly, then inject 5% carbonic acid Sodium hydrogen solution is activated, mixed and granulated; the pellets are kept at a pressure of 18Mpa for 10 minutes to obtain a green body; the green body is dried in a drying oven at 105°C for 18 hours, and then moved into the furnace cavity of the microwave material science workstation, and set for sintering The temperature is 1190°C, and the holding time is 1h; the sintered ceramic samples are cut into disks of specific sizes, and then tested for their related properties by modern analysis and testing techniques.

[0040] The properties of perforated sound-absorbing ceramics prepared with low-grade non-metallic associated ore as the main raw material are as follows: the apparent porosit...

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Abstract

The invention discloses perforated sound-absorbing ceramic prepared by taking low-grade non-metal associated ore as a main raw material and a preparation method of the perforated sound-absorbing ceramic. The perforated sound-absorbing ceramic with high strength, good stability and excellent sound-absorbing performance is prepared by the processes of activation, granulation, blank making, sintering in a microwave material science workstation and the like. Performance of the perforated sound-absorbing ceramic is as follows: apparent porosity is 35.7-39.1%; and the average sound absorption coefficient at the frequency of 200-1600 Hz is 0.36-0.55. According to the invention, the defects of high additional value of high-grade minerals, poor safety, high price and the like of the traditional sound-absorbing material are overcome, the efficient utilization of low-grade natural resources is effectively improved, and environmental pollution and potential safety hazards are reduced. The invention provides a reliable preparation process for preparing the sound-absorbing ceramic material with the perforated holes (three-dimensional through hole channels), and the prepared perforated sound-absorbing ceramic has great potential in practical application of the environment-friendly sound-absorbing material.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a perforated sound-absorbing ceramic prepared from low-grade non-metallic associated ore as a main raw material and a preparation method thereof. Background technique [0002] With the continuous progress of society, efficient audio equipment, speeding high-speed rail and high-speed cars have brought great convenience to people's lives, but accompanied by increasingly prominent noise pollution. How to effectively control noise sources and reduce noise has become an important way to solve noise pollution. In terms of controlling the source of noise, there are great limitations to a certain extent; and in terms of noise reduction, the use of efficient sound-absorbing materials can often get twice the result with half the effort. [0003] Traditional sound-absorbing materials are mostly concentrated on inorganic fibers, organic foams and metal-based porous materia...

Claims

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Application Information

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IPC IPC(8): C04B35/00C04B35/622C04B35/64C04B38/00
CPCC04B35/00C04B35/622C04B35/64C04B38/00C04B2235/3201C04B2235/36C04B2235/422C04B2235/3826C04B2235/5436C04B2235/5454C04B2235/656C04B2235/6567C04B2235/667C04B2235/96C04B38/0074
Inventor 田永尚李水云吴庆念骆向阳井强山胡雄杰殷小丰刘鹏
Owner XINYANG NORMAL UNIVERSITY
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