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Heat-resistant basalt fibre filter material and preparation method thereof

A technology of basalt fiber and high temperature resistance is applied in the field of high temperature resistant filter material and its preparation, which can solve the problems of increased production cost, inability to meet the actual needs of filtration, and high requirements for high temperature resistance performance of filter materials.

Active Publication Date: 2010-10-13
昆山万瑞达工业纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature of the flue gas generated by some flue gas emission points or dust points in the carbon black industry, iron and steel industry, non-ferrous metal industry, chemical industry, cement industry, waste incineration industry, etc. Or equal to 250°C, the high temperature resistance of filter materials is very high, so the filter materials currently used can no longer meet the actual needs of filtration under high temperature conditions
Some working conditions have to add cooling facilities in front of the dust collector to avoid high temperature damage to the filter material, which greatly increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. The basalt fiber is drawn into shape, then impregnated with polytetrafluoroethylene emulsion (wherein the content of polytetrafluoroethylene is 25wt%), and then the treated basalt yarn is 1 / 1 by air-jet loom. The modified basalt base cloth of 350g / m2 is woven by the plain weave process. Its warp strength is ≥1600N, and weft strength is ≥1600N.

[0016] 2. Unpack the basalt short fiber raw material, spread it evenly, spray an aqueous solution containing 1wt% softener, and after standing for 24 hours, go through the following procedures: pre-opening → main opening → cotton box mixing → carding → made into 180g / m2~200g / m2 basalt fiber mesh. Pre-opening is to feed the pre-treated basalt short fibers to the card opener through the conveying flat curtain.

[0017] 3. Pass the basalt fiber single net output by the carding machine through the cross-folding net lapper to make it a multi-layer fiber net with the required width and unit weight, and evenly stack it on the upp...

Embodiment 2

[0021] 1. The basalt fiber is drawn into shape, and then impregnated with polytetrafluoroethylene emulsion, and then the treated basalt yarn is woven into 400g / m2 modified basalt by an air-jet loom using a 1 / 1 plain weave process base cloth. Its warp strength is ≥1750N; weft strength is more than 1750N

[0022] 2. Unpack the basalt short fiber raw material, spread it evenly, spray an aqueous solution containing 3wt% softener, and after standing for 24 hours, go through the following procedures: pre-opening → main opening → cotton box mixing → carding → made into 275g / m2~295g / m2 basalt fiber mesh. Pre-opening is to feed the pre-treated basalt short fibers to the card opener through the conveying flat curtain.

[0023] 3. Pass the basalt fiber single net output by the carding machine through the cross-folding net lapper to make it a multi-layer fiber net with the required width and unit weight, and evenly stack it on the upper and lower sides of the basalt base cloth. The fo...

Embodiment 3

[0027] 1. The basalt fiber is drawn into shape, then impregnated with polytetrafluoroethylene emulsion, and then the treated basalt yarn is woven into 550g / m2 modified basalt by an air-jet loom using a 1 / 1 plain weave process base cloth. Its warp strength ≥ 2300N; weft strength ≥ 2300N

[0028] 2. Unpack the basalt short fiber raw material, spread it evenly, spray an aqueous solution containing 5wt% softener, and after standing for 24 hours, go through the following procedures: pre-opening → main opening → cotton box mixing → carding → made into 190g / m2~210g / m2 basalt fiber mesh. Pre-opening is to feed the pre-treated basalt short fibers to the card opener through the conveying flat curtain.

[0029] 3. Pass the basalt fiber single net output by the carding machine through the cross-folding net lapper to make it a multi-layer fiber net with the required width and unit weight, and evenly stack it on the upper and lower sides of the basalt base cloth. The following process: ...

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Abstract

The invention provides a heat-resistant basalt fiber filter material and a preparation method thereof. The filter materials of the invention can be used in environment of ultra-high temperature, and has excellent folding endurance, corrosion resistance and abrasive resistance. The preparation method of the heat-resistant basalt fiber filter material has the technical scheme as follows: firstly, preparing a basalt fiber foundation and basalt fiber meshes; putting the basalt fiber foundation between the upper basalt fiber mesh and the lower basalt fiber mesh to be manufactured into the filter material; and preparing basalt fiber used for the basalt fiber foundation and then carrying out dipping treatment of teflon mix emulsion.

Description

technical field [0001] The invention relates to a high-temperature-resistant filter material and a preparation method thereof, in particular to a high-temperature-resistant basalt fiber filter material and a preparation method thereof. Background technique [0002] At present, organic fibers such as P84, PPS, and aramid fibers are mostly used in the field of high-temperature filtration as high-temperature resistant filter materials, and their temperature resistance is generally below 250°C. Due to the high temperature of the flue gas generated by some flue gas emission points or dust points in the carbon black industry, iron and steel industry, non-ferrous metal industry, chemical industry, cement industry, waste incineration industry, etc. Or equal to 250°C, the high temperature resistance performance of the filter material is very high, so the filter material currently used can no longer meet the actual needs of filtration under high temperature conditions. Some working c...

Claims

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Application Information

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IPC IPC(8): B01D39/14B32B3/12B32B19/00
Inventor 宋朋泽
Owner 昆山万瑞达工业纺织品有限公司
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