A filter bag for filtering and recovering non-ferrous metal dust and its preparation method

A non-ferrous metal and filter bag technology is applied in the field of filter bags for filtration and recovery of non-ferrous metal dust and its preparation, which can solve the problems of low filtration efficiency and low dust cleaning and recovery rate, so as to improve the filtration efficiency, improve the effectiveness of dust removal, The effect of reducing the emission concentration

Active Publication Date: 2020-05-08
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention lies in the low filtration efficiency and low dust recovery rate of the filter bags used in the existing bag filter, and a filter bag for filtering and recovering non-ferrous metal dust and its preparation method are provided

Method used

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  • A filter bag for filtering and recovering non-ferrous metal dust and its preparation method
  • A filter bag for filtering and recovering non-ferrous metal dust and its preparation method
  • A filter bag for filtering and recovering non-ferrous metal dust and its preparation method

Examples

Experimental program
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Embodiment 1

[0044] A filter bag for filtering and recovering non-ferrous metal dust, comprising a filter bag body, the filter bag body contains 85% by weight of microporous composite filter material and 15% by weight of microporous composite filter material with an average particle size of 30nm. Magnetic nano-iron oxide, dispersant emulsion and solid content of 60% polytetrafluoroethylene dispersion emulsion three blends are solidified to form an adsorption layer; the microporous composite filter material from top to bottom is surface layer, Needle-punched felt with needle-punched mechanical consolidation of the base fabric layer and the bottom layer, wherein the bottom layer and the surface layer are both obtained by blending ultra-fine polyphenylene sulfide fibers and polytetrafluoroethylene fibers, and the base fabric layer is polytetrafluoroethylene yarns The mesh structure formed by interweaving warp and weft; the dispersant emulsion is a mixed emulsion of titanate coupling agent, pol...

Embodiment 2

[0055] A filter bag for filtering and recovering non-ferrous metal dust, comprising a filter bag body, the filter bag body contains 90% by weight of microporous composite filter material and 10% by weight of microporous composite filter material with an average particle size of 90nm. Magnetic nano iron oxide, dispersant emulsion and solid content of 60% polytetrafluoroethylene dispersion emulsion three mixtures are solidified to form the adsorption layer; the microporous composite filter material is surface layer, Needle-punched felt with needle-punched mechanical consolidation of the base fabric layer and the bottom layer, wherein the bottom layer and the surface layer are both obtained by blending ultra-fine polyphenylene sulfide fibers and polytetrafluoroethylene fibers, and the base fabric layer is polytetrafluoroethylene yarns The mesh structure formed by interweaving warp and weft; the dispersant emulsion is a mixed emulsion of titanate coupling agent, polyvinyl alcohol s...

Embodiment 3

[0066] A filter bag for filtering and recovering non-ferrous metal dust, comprising a filter bag body, the filter bag body contains 95% by weight of microporous composite filter material and 5% by weight of microporous composite filter material with an average particle size of 150nm. The adsorption layer formed after the blend of magnetic nano iron oxide, dispersant emulsion and polytetrafluoroethylene dispersion emulsion with solid content of 60% is cured; the microporous composite filter material is surface layer, base cloth from top to bottom The needle-punched felt with the needle-punched mechanical consolidation of the layer and the bottom layer, in which the bottom layer and the surface layer are both obtained by blending ultra-fine polyphenylene sulfide fibers and polytetrafluoroethylene fibers, and the base fabric layer is polytetrafluoroethylene yarns interwoven in warp and weft The formed network structure; the dispersant emulsion is a mixed emulsion of titanate coupl...

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Abstract

The invention discloses a filter bag for filtering and recovering non-ferrous metal dust and a preparation method thereof. The filter bag contains 85% to 95% by weight of microporous composite filter material and the weight loaded on the microporous composite filter material. The adsorption layer with a percentage of 5%-15%, the adsorption layer is a mixture obtained by blending magnetic nano iron oxide, polytetrafluoroethylene dispersion emulsion and dispersant emulsion after curing treatment, and the weight percentage of magnetic nano iron oxide in the mixture is 3%-25%, the weight percentage of polytetrafluoroethylene is 55%-70%, and the balance is the cured product of the dispersant emulsion. The filter bag prepared by the invention has stronger adsorption force for metal dust, effectively shortens the formation time of the powder cake layer, and improves the recovery rate of non-ferrous metals and the effectiveness of cleaning dust; the filter bag of the invention has higher filtration precision and electrical conductivity. It will be significantly improved to obtain excellent anti-static and explosion-proof capabilities.

Description

technical field [0001] The invention belongs to the technical field of functional filter materials, and in particular relates to a filter bag for filtering and recovering non-ferrous metal dust and a preparation method thereof. Background technique [0002] At present, it is very serious to solve the problem of dust pollution generated by non-ferrous metals in the process of smelting, processing and coating. Toxic dust generated during the smelting process will seriously endanger the survival of organisms. For example, beryllium dust can cause lung granuloma; lead to pneumoconiosis; arsenic dust can induce lung cancer, and the dust falls on the rotating parts of the machine, which will accelerate the wear of the parts and reduce the working accuracy and life of the machine. With the increasing awareness of environmental protection around the world, air quality and air visibility have received more and more attention. It is of great significance to accelerate the research on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/04B01D39/14B01D46/00B01D46/02B01D46/04
CPCB01D39/14B01D46/0034B01D46/0036B01D46/023B01D46/04B01D2239/0407B01D2239/10D06N3/0006D06N3/0013D06N3/0015D06N3/0061D06N3/0063D06N3/0077D06N3/047D06N2201/029D06N2205/10D06N2209/045D06N2209/046D06N2209/148D06N2211/30
Inventor 古俊飞刘江峰周冠辰徐辉
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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