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Low-cost porous ceramic sound absorbing material and preparation process thereof

A technology of porous ceramics and sound-absorbing materials, applied in the field of sound-absorbing materials, can solve problems such as noise pollution, and achieve the effects of saving energy, reducing formation temperature, and lowering firing temperature

Inactive Publication Date: 2015-06-03
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the above-mentioned technical problems and provide a low-cost porous ceramic sound-absorbing material and its manufacturing process. Highway and Railway Noise Pollution Problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0041] (1) According to weight percentage, 25% combined method red mud, 25% steel slag, 15% coal gangue, 10% carbide slag, 10% boiler slag, 5% quartz sand and 10% sodium hydroxide solution are taken according to the weight percentage 10% reserve;

[0042] (2) Steel slag, coal gangue, calcium carbide slag and boiler slag are roughly crushed into particles below 10mm by the crusher, and then put into ball mills for ball milling, so that the particles of steel slag, coal gangue, calcium carbide slag and boiler slag The diameter is 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 red mud, quartz sand and sodium hydroxide solution taken in step (1) evenly, and soak for 0.5h, get mixed material;

[0044] (4) Add the mixed material obtained in step (3) into the mo...

Embodiment 2

[0055] A manufacturing process of a low-cost porous ceramic sound-absorbing material, comprising the following steps:

[0056] (1) According to the percentage by weight, 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 are used for standby;

[0057] (2) Steel slag, coal gangue, calcium carbide slag and boiler slag are roughly crushed into particles below 10mm by the crusher, and then put into ball mills for ball milling, so that the particles of steel slag, coal gangue, calcium carbide slag and boiler slag The diameter is between 0.5-1mm.

[0058] (3) Mix the steel slag, coal gangue, calcium carbide slag and boiler slag after ball milling in step (2) and the combined red mud, quartz sand and sodium hydroxide solution taken in step (1) evenly, and soak for 0.5h, get mixed material;

[0059] (4) Add the mixed material obtained in step (3) into the mold, ...

Embodiment 3

[0069] A manufacturing process of a low-cost porous ceramic sound-absorbing material, comprising the following steps:

[0070] (1) According to the weight percentage, take 28% of combined process red mud, 23% of steel slag, 18% of coal gangue, 8% of carbide slag, 12% of boiler slag, 3% of quartz sand, and 8% of 10% sodium hydroxide solution for use;

[0071] (2) Steel slag, coal gangue, calcium carbide slag and boiler slag are roughly crushed into particles below 10mm by the crusher, and then put into ball mills for ball milling, so that the particles of steel slag, coal gangue, calcium carbide slag and boiler slag The diameter is between 0.5-1mm.

[0072] (3) Mix the steel slag, coal gangue, calcium carbide slag and boiler slag after ball milling in step (2) and the combined red mud, quartz sand and sodium hydroxide solution taken in step (1) evenly, and soak for 0.5h, get mixed material;

[0073] (4) Add the mixed material obtained in step (3) into the mold, and press it...

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Abstract

The invention relates to a low-cost porous ceramic sound absorbing material and a preparation process thereof. The ceramic sound absorbing material is prepared from the following raw materials in percentage by weight: 23-28 percent of combination-process red mud, 23-28 percent of steel slags, 13-18 percent of coal gangue, 8-12 percent of carbide slag, 8-12 percent of boiler slags, 3-8 percent of quartz sand and 8-12 percent of a 10% sodium hydroxide solution. By taking the metallurgical industrial waste red mud and steel slags as main raw materials, the sound absorbing material disclosed by the invention can be used for solving the problem of noise pollution of subways, urban roads, expressways and railways.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a low-cost porous ceramic sound-absorbing material and a manufacturing process thereof. 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 protection, resource regeneration and reu...

Claims

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Application Information

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IPC IPC(8): C04B38/00B09B3/00
Inventor 王维李武会逯峙王可桢姚怀
Owner HENAN UNIV OF SCI & TECH
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