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Filter bag for filtering and recovering nonferrous metal dust and preparation method thereof

A non-ferrous metal and filter bag technology, which is applied in the field of filter bags for filtering and recovering non-ferrous metal dust and its preparation, can solve the problems of low dust cleaning and recovery rate, low filtering efficiency, etc., so as to improve filtering efficiency, reduce emission concentration, and reduce escape Effect

Active Publication Date: 2018-05-25
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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  • Filter bag for filtering and recovering nonferrous metal dust and preparation method thereof
  • Filter bag for filtering and recovering nonferrous metal dust and preparation method thereof
  • Filter bag for filtering and recovering nonferrous metal dust and preparation method thereof

Examples

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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 nonferrous metal dust and a preparation method thereof. The filter bag comprises the following components in percentage by weight: 85-95% of a micro-porous composite filter material and 5-15% of an adsorption layer supported onto the micro-porous composite filter material, wherein the adsorption layer is a mixture obtained by blending magnetic nanocrystalline iron oxide, a polytetrafluoroethylene dispersion emulsion and a dispersing agent emulsion and performing curing treatment; the mixture comprises the following components inpercentage by weight: 3-25% of the magnetic nanocrystalline iron oxide, 55-70% of the polytetrafluoroethylene and the balance of a cured dispersing agent emulsion. The filter bag prepared by the invention has high adsorption capacity on the metal dust, the formation time of a pressed powder layer is effectively shortened, and the nonferrous metal recovery rate and ash removal effectiveness are improved. The filter bag disclosed by the invention is high in filtering precision, the conductivity is obviously improved, and excellent antistatic and explosion-proof properties are obtained.

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 Applications(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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