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Ceramic sound absorbing material

A technology of sound-absorbing materials and ceramics, applied in the field of sound-absorbing materials, can solve problems such as salinization of fertile fields, and achieve the effects of saving energy, reducing forming temperature, and reducing firing temperature

Inactive Publication Date: 2018-09-07
HAIMEN CITY RUITAI TEXTILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term accumulation of carbide slag will cause salinization of fertile land

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0022] Another aspect of the preferred embodiment of the present invention also provides the preparation method of the ceramic sound-absorbing material, which includes:

[0023] (1) According to the weight percentage, 23-28% of combined process red mud, 23-28% of steel slag, 13-18% of coal gangue, 8-12% of carbide slag, 8-12% of boiler slag, 3-8% of quartz sand, And 10% sodium hydroxide solution 8~12% for standby; (2) Steel slag, coal gangue, calcium carbide slag and boiler slag are respectively coarsely crushed into particles below 10mm by a crusher, and then put into a ball mill for ball milling to make steel slag , coal gangue, carbide slag and boiler slag have a particle size between 0.5-1mm; (3) the steel slag, coal gangue, carbide slag and boiler slag after ball milling in step (2) and the combined Red mud, quartz sand and sodium hydroxide solution were mixed evenly, and soaked for 0.5h to obtain the mixed material; (4) Add the mixed material obtained in step (3) into th...

Embodiment 1

[0025] A manufacturing process of a low-cost porous ceramic sound-absorbing material, comprising the following steps:

[0026] (1) According to the weight percentage, 25% of combined method red mud, 25% of steel slag, 15% of coal gangue, 10% of carbide slag, 10% of boiler slag, 5% of quartz sand and 10% of sodium hydroxide solution are taken according to the weight percentage. %spare;

[0027](2) The steel slag, coal gangue, calcium carbide slag and boiler slag are roughly crushed into particles below 10mm by a crusher, and then put into a ball mill for ball milling to make the particle size of steel slag, coal gangue, carbide slag and boiler slag Between 0.5-1mm.

[0028] (3) Mix the steel slag, coal gangue, calcium carbide slag and boiler slag after ball milling in step (2) and the combined process red mud, quartz sand and sodium hydroxide solution taken in step (1), and soak for 0.5h to obtain mixed materials;

[0029] (4) Add the mixed material obtained in step (3) into...

Embodiment 2

[0040] A manufacturing process of a low-cost porous ceramic sound-absorbing material, comprising the following steps:

[0041] (1) According to the weight percentage, take 23% of combined process red mud, 26% of steel slag, 13% of coal gangue, 12% of carbide slag, 8% of boiler slag, 7% of quartz sand, and 11% of 10% sodium hydroxide solution for use;

[0042] (2) The steel slag, coal gangue, calcium carbide slag and boiler slag are roughly crushed into particles below 10mm by a crusher, and then put into a ball mill for ball milling to make the particle size of steel slag, coal gangue, carbide slag and boiler slag Between 0.5-1mm.

[0043] (3) Mix the steel slag, coal gangue, calcium carbide slag and boiler slag after ball milling in step (2) and the combined process red mud, quartz sand and sodium hydroxide solution taken in step (1), and soak for 0.5h to obtain mixed materials;

[0044] (4) Add the mixed material obtained in step (3) into the mold, and press it under a pre...

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Abstract

The invention discloses a ceramic sound absorbing material, which comprises: 20-28% of combined method red mud, 22-28% of steel slag, 13-18% of coal gangue, 8-12% of calcium carbide slag, 8-12% of boiler slag, 3-8% of quartz sand, and 8-15% of a 10% sodium hydroxide solution. According to the present invention, the steel slag, the coal gangue and the red mud are used as the main raw materials, wherein the coal gangue and the red mud are rich in Na2O and K2O, and can form low melting point eutectic mixtures and a large amount of glass phases with CaO, Al2O3 and SiO2 so as to be used as the fluxfor the sintering reaction, the steel slag contains a lot of simple oxides and complex oxides, the complex oxides in the steel slag absorb a large amount of latent heat during the being formed, and the latent heat is used during the firing of the ceramic sound absorbing material, such that the forming temperature of calcium aluminum melilite is lowered and is 50 DEG C lower than the firing temperature of the original sound absorbing material so as to achieve the low-carbon production of the porous ceramic sound absorbing material and save rge energy.

Description

technical field [0001] The invention relates to a sound-absorbing material, in particular to a low-cost porous ceramic sound-absorbing material and its manufacturing process, belonging to the technical field of sound-absorbing materials. Background technique [0002] Red mud is the waste discharged during the production of alumina, which is about twice the output of alumina, and is currently stored in the open air. Steelmaking slag has a utilization rate of about 25% due to its f-CaO content and unstable composition. Long-term accumulation of carbide slag will cause salinization of fertile land. my country's coal gangue increases by 200 million tons every year, forming gangue hills. Boiler slag contains high content of carbon, silicon dioxide and aluminum oxide, which can be reused as the skeleton of silicate products. Recycling secondary resources through a process with simple cost and realizing turning waste into treasure is of great significance to environmental prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/132C04B33/135C04B33/138G10K11/162
CPCC04B33/131C04B33/132C04B33/1322C04B33/1328C04B33/135C04B33/138C04B2235/3418G10K11/162Y02P40/60
Inventor 姜惠敏
Owner HAIMEN CITY RUITAI TEXTILE TECH CO LTD
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