Super fine Fiberglass dust filter bag used in blast furnace dry Gas
cleaning plant
We have involved in Blast furnace dry gas cleaning system 20 years
ago, At present , we have successfully applied our superfine glass
fiber needle punched filter bag FMS 9806 to the iron and steel
industries, now they are used for Bao steel, Tang Steel, Shan
Steel, JSPL , JSW, Bhushan steel ,SLR,Usha Martin and other foreign
large-scale iron and steel enterprises.
FMS dry dust filter bag is the most suitable material used in blast
furnace dry gas cleaning system which designed by Chinese MCC.
These dry GCP bag used in 65m3 75 m3, 120m3,
330m3,350m3,550m3,650m3 dry GCP silo for BF gas cleaning.
This kind fabric is needle punched by 3-4 fibers together, it has
high temperature repellent, good air permeability, easy to take
offer cake advantage. Now widely used in dry GCP system.
| Item | Thickness mm | Weight g/m2 | Work temp. | Air permeability dm3/m2.s | Tensile strength 25mm/N Warp/weft | Velocity m/min |
| FMS9803 | 2.2-2.5 | >850 | 260-280 | 15-30 | 1600 | 1400 | 0.5-0.8 |
| FMS9806 | 2.2-2.5 | >850 | 240-260 | 15-30 | 1600 | 1400 | 0.5-0.8 |
Note:All the parameters indicated the performance index of the
products, the reasonable filtration should be chosen according to
the specific working conditions. The above filter bag will adopt different post-processing
techniques according to the specific working conditions. |
The detail description of filter medium
For reducing resistance of filter media, except the special
technology for laying the fiber , we also choose different diameter
fiber to process, let’s the fabric can be graded structure, on the
fabric surface ,there is super fine fiber, to increase the fabric
filtration precision ,anti-acid and alkali ,and en-length the life
of fabric. In the actual application , the efficiency as same as
membrane coating fabric , but resistance is more lower.
1) Nonwoven fabric cross section choose graded structure , fiber
diameter from thin to thick, there are 4 layers, surface super fine
fiber layer--super fine fiber---scrim—thick fiber layer. The fiber
more thin, the ventilation channel more compact.
Filter fabric structure :
From up( face to ash) to down
Surface: Polyamides+ Fiberglass layer
( fiber dipping and PTFE coating)
Main part: Polyamides + Fiberglass layer
Scrim: high tensile fiberglass woven fabric
Post surface: Polyamides +Fiberglass layer
2) Learning from the technology of membrane fabric.
We change the same diameter fiber to different diameter fiber, then
blended together, turn the traditional filter media to graded
structure filter media.
The method of filtration from “ surface layer +deep layer” to
“surface layer” only. The super fine fiber layer can resistance
smaller particles, the nonwoven fabric surface will be more
compact, and easy to remove ash cake.
The special Applications
Blast furnace Dry GCP plant gas cleaning
Blast fuance volume: 250m3-5500m3
GCP plant : Dry
Dust silos No.s: 8-24 sets
Bag filter size: DN 130x6000mm& DN 160x8000mm length
Working temp.: 100-300 degree C
Life: 12-18 months
Customers: Sinosteel, MCC , JSW, Baosteel,JSPL, and so on.
