CN102698524A - Method for making ore dressing filter bag with high abrasion resistance - Google Patents
Method for making ore dressing filter bag with high abrasion resistance Download PDFInfo
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- CN102698524A CN102698524A CN2012101985355A CN201210198535A CN102698524A CN 102698524 A CN102698524 A CN 102698524A CN 2012101985355 A CN2012101985355 A CN 2012101985355A CN 201210198535 A CN201210198535 A CN 201210198535A CN 102698524 A CN102698524 A CN 102698524A
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Abstract
The invention relates to a method for making an ore dressing filter bag with high abrasion resistance. The method is characterized by comprising raw material selection, warping, cloth weaving, calendaring, cutting, sewing and formation of the finished bag and specifically comprises the following steps of: a) selecting '66' nylon monofilaments with high abrasion resistance; b) waving the nylon monofilaments into double-layer structural cloth by adopting a KT566 flexible rapier loom, wherein the double-layer structural cloth consists of a surface filtration layer and an inner abrasion-resistant layer, the surface filtration layer has a 1/3 twill weave structure, and the inner abrasion-resistant layer has a 2/3 twill weave structure; c) performing after finishing and double-side calendaring on the woven double-layer structural cloth, wherein the temperature of an upper roller is 180 to 240 DEG C, the temperature of a lower roller is 160 to 230 DEG C, and the cloth feeding speed is 1.6 to 1.8 meters per minute; and d) forming the filter bag by cutting and sewing. The double-layer twill weave has a good filter effect and a good abrasion-resistant effect; and compared with the conventional filter bag, the filter bag has the advantages that the service life is doubled.
Description
Technical field
The invention belongs to the air cleaning filter technical field, especially relate to the preparation method of a kind of ore dressing with the high abrasion filter bag.
Background technology
All can there be dust to produce on a lot of in process of production process equipments in ore dressing plant; Want to make the ore dressing plant respectively to produce be up to state standards working condition and exhaust gas discharged of dirt pits and reach discharging standards; Must control the dust that produces the dirt pits generation; For example the disintegrating machine of mine raw material crushing system or the positions such as Tou Liao Kou ﹑ discharging opening, vibratory sieve top and ribbon conveyer reloading point of pulverizer are established obturator or dust gathering arrester, all adopt filter bag on its obturator or the dust gathering arrester.
The raw material of the ZPG disk filter filter bag that is used for the iron ore beneficiation field that the at present domestic bigger living factory of filter cloth is produced mainly contains polyamide multifilament, polypropylene chopped fiber etc.; These raw materials have filoplume because of the filament surface; So when knitting the filter bag of processing and on filter, using; Air permenbility is bad, easy to be stopped up, and causes filter cake to approach (about 10 millimeters), moisture content high (about 11%).Relatively poor because of its raw material wearability, small opening easy to wear causes the short bad filter effects such as (about 160 hours) of filter bag life cycle.The institutional framework of present domestic filter bag generally is plain weave individual layer or twill individual layer, adopts polyamide fibre " 6 " multifilament raw material usually, its wearing coefficient: 1.8, and silk dawn number: 500D; Plain weave (individual layer) institutional framework and conventional back satinage technology, its preparation method is: warping-weave-become a cloth-calendering processing-cutting to make-finished bag.Owing to be plain weave (individual layer) institutional framework, its up-down rollers temperature is: 170 ± 5 ℃ in its calendering treatment process; Cloth speed is gone in calendering: 2-2.2 meters/minutes.The filter bag that adopts this raw material and operation to make owing to be monolayer organization, will cause the wearing and tearing small opening after about 160 hours of service life, causes the filter bag life cycle short.Owing to life cycle is short, it is frequent to cause filter bag to be changed, and the related accessory loss of filter is increased, and stops platform rate height, reduces production efficiency, influences filter effect.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art, and a kind of long service life is provided, base cloth intensity is high, and the low ore dressing of production cost is with the preparation method of high abrasion filter bag.
The objective of the invention is to realize through following technical proposals:
According to the preparation method of ore dressing of the present invention with the high abrasion filter bag, it is characterized in that comprising material choice-warping-be woven into a cloth-calendering processing-cutting to make-finished bag, concrete steps are following:
A) at first select high abrasion " 66 " nylon monofilament line;
B) adopt KT566 type flexible rapier loom; Described nylon monofilament line is made into double-layered structure's cloth; A described double-layered structure cloth is made up of by wearing layer both surface filtration layer and nexine; Described both surface filtration layer is made into 1/3 twill-weave structure, and described nexine wearing layer is made into 2/2 twill-weave structure;
C) cloth of the double-layered structure after described the weaving is carried out finishing process and carry out two-sided calendering processing, roll temperature is on it: 180 ℃-240 ℃, following roll temperature is: 160 ℃-230 ℃, go into cloth speed and be 1.6-1.8 meters/minutes;
D) form filter bag through the cutting sewing.
Advantage of the present invention is:
1) owing to adopted high abrasion " 66 " nylon monofilament line, its wearing coefficient is brought up to more than 3.0 by former 1.8;
2) double-layered structure's cloth improves service life filter bag greatly, and this institutional framework has improved the anti-wear performance of filter bag in all directions, though consumption of raw materials than original increase about 10%, effectively reduced cost than original raising about 87% service life;
3) reasonably control the finishing process calender process settings, make double-layered structure's fabric tight more, stable, prolonged service life, prolonged the replacement cycle of filter bag, reduced the replacing number of times of filter bag, improved equipment operation rate.
The specific embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1
Ore dressing of the present invention is with the preparation method of high abrasion filter bag, it is characterized in that comprising material choice-warping-be woven into a cloth-calendering processing-cutting to make-finished bag, and concrete steps are following:
A) at first select high abrasion " 66 " nylon monofilament line, the wearing coefficient of this high abrasion " 66 " nylon monofilament line can reach more than 3.0; The bright and clean no plumage in this raw material thread surface, fine ore is difficult for stopping up filter bag during use, helps filter cake and peels off, and good wear-resisting effect is arranged, and can not stop using because of wearing and tearing small opening in the short time;
B) adopt known KT566 type flexible rapier loom and knitting skill; Described nylon monofilament line is made into double-layered structure's cloth; A described double-layered structure cloth is made up of by wearing layer both surface filtration layer and nexine, and described both surface filtration layer is made into 1/3 twill-weave structure, and described nexine wearing layer is made into 2/2 twill-weave structure; This institutional framework has improved the anti-wear performance of filter bag in all directions;
C) cloth of the double-layered structure after described the weaving is carried out finishing process and carry out two-sided calendering processing, roll temperature is on it: 180 ℃-240 ℃, following roll temperature is: 160 ℃-230 ℃, go into cloth speed and be 1.6-1.8 meters/minutes; Make double-layered structure's fabric tight more, stable, further improved the combination property of filter bag; Its two-sided calendering can make fabric accept heat, increases the stability of fabric.Last roll temperature is higher than lower roll, is because of top roll and the roll compacting of fabric filtration layer, and temperature is high slightly to make cloth cover smooth, helps filtering, peeling off.Lower roll and the roll compacting of fabric wearing layer, temperature is too high can to reduce fabric wearing layer fracture strength, influences wear-resisting effect, so roll temperature is lower than upward roll temperature slightly down.Cloth speed is gone in calendering directly influences fabric smoothness and stability.Through a large amount of repeatedly practising, heat and the increase of roll compacting time that cloth speed can make for 1.6-1.8 meters/minutes fabric accept gone in calendering, helps the stable and smooth of fabric;
It is smooth that this calender process settings can make two-layer fabric stablize more, be difficult for to stop up, and helps filter cake and peel off and regenerate, and reduces filter cake moisture content, improves wear-resisting effect;
D) form filter bag according to the known technology mode through the cutting sewing then.
The present invention can make double-layered structure's cloth reach different flatness and anti-wear performances through control up-down rollers temperature, lower roll and the roll compacting of fabric nexine wearing layer, and temperature is too high can to reduce the wearing layer fracture strength, so roll temperature is lower slightly than top roll down; Top roll and fabric are crossed the roll compacting of both surface filtration layer, and temperature is high slightly to make cloth cover smooth, help filtering.
According to method and the step of embodiment 1, control up-down rollers temperature is made filter bag of the present invention in the cloth calendering operation of the double-layered structure shown in the employing table 1, and product reaches following technical indicator.
Table 1
The existing good filter effect of double-deck twill-weave of the present invention has good wear-resisting effect again, and be doubled than existing filter bag service life.
The filter bag that uses the present invention to process can reach more than 300 hours in life cycle on the ZPG disk filter, reduces and filters cost, enhances productivity.Concrete technical indicator contrasts as follows:
| Original index parameter | The present technique index parameter | Beneficial effect |
| Wearing coefficient: 1.8; | Wearing coefficient: 3.0; | Improve wear-resisting effect |
| Tissue: plain weave individual layer; | Tissue: top layer 1/3 twill, nexine 2/2 twill; | Improve wear-resisting effect, improve surface smoothness |
| Through fracture strength: 2500N/5*20cm; | Through fracture strength: 3000N/5*20cm; | Improve |
| Latitude fracture strength: 2000N/5*20cm; | Latitude fracture strength: 2500N/5*20cm; | Improve |
| Air permenbility: 300-400L/ ㎡ S; | Air permenbility: 200-300L/ ㎡ S; | Confirm through practice.Air permenbility: 200-300L/ ㎡ S is an optimum value. |
| Filter cake thickness: about 10 millimeters; | Filter cake thickness: about 15 millimeters; | Improve (improving filter cake thickness can enhance productivity) |
| Filter cake moisture content: about 11%; | Filter cake moisture content: about 10%; | Reduce (but reducing filter cake moisture content energy savings) |
| Service life: about 160 hours; | Service life: about 300 hours; | Improve |
In sum, the existing good filter effect of double-deck twill-weave of the present invention has good wear-resisting effect again, and be doubled than existing filter bag service life.
Claims (1)
1. an ore dressing is with the preparation method of high abrasion filter bag, it is characterized in that comprising material choice-warping-be woven into a cloth-calendering processing-cutting to make-finished bag, and concrete steps are following:
A) at first select high abrasion " 66 " nylon monofilament line;
B) adopt KT566 type flexible rapier loom; Described nylon monofilament line is made into double-layered structure's cloth; A described double-layered structure cloth is made up of by wearing layer both surface filtration layer and nexine; Described both surface filtration layer is made into 1/3 twill-weave structure, and described nexine wearing layer is made into 2/2 twill-weave structure;
C) cloth of the double-layered structure after described the weaving is carried out finishing process and carry out two-sided calendering processing, roll temperature is on it: 180 ℃-240 ℃, following roll temperature is: 160 ℃-230 ℃, go into cloth speed and be 1.6-1.8 meters/minutes;
D) form filter bag through the cutting sewing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101985355A CN102698524A (en) | 2012-06-17 | 2012-06-17 | Method for making ore dressing filter bag with high abrasion resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101985355A CN102698524A (en) | 2012-06-17 | 2012-06-17 | Method for making ore dressing filter bag with high abrasion resistance |
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| CN102698524A true CN102698524A (en) | 2012-10-03 |
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| CN2012101985355A Pending CN102698524A (en) | 2012-06-17 | 2012-06-17 | Method for making ore dressing filter bag with high abrasion resistance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64317A (en) * | 1987-06-22 | 1989-01-05 | Mazda Motor Corp | Intake air device for engine |
| JPH10317A (en) * | 1996-06-17 | 1998-01-06 | Kawasaki Steel Corp | Filter cloth for collection of dust |
| CN101269285A (en) * | 2008-05-15 | 2008-09-24 | 于志华 | Monofilament double-layer filtering cloth |
| CN201482321U (en) * | 2009-07-22 | 2010-05-26 | 浙江省天台县工业用布厂 | Dual-layer filter cloth |
| CN201768439U (en) * | 2010-09-03 | 2011-03-23 | 浙江三星特种纺织有限公司 | Double-layer polyamide single yarn filter cloth |
-
2012
- 2012-06-17 CN CN2012101985355A patent/CN102698524A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64317A (en) * | 1987-06-22 | 1989-01-05 | Mazda Motor Corp | Intake air device for engine |
| JPH10317A (en) * | 1996-06-17 | 1998-01-06 | Kawasaki Steel Corp | Filter cloth for collection of dust |
| CN101269285A (en) * | 2008-05-15 | 2008-09-24 | 于志华 | Monofilament double-layer filtering cloth |
| CN201482321U (en) * | 2009-07-22 | 2010-05-26 | 浙江省天台县工业用布厂 | Dual-layer filter cloth |
| CN201768439U (en) * | 2010-09-03 | 2011-03-23 | 浙江三星特种纺织有限公司 | Double-layer polyamide single yarn filter cloth |
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Application publication date: 20121003 |