CN101654358A - Anti-static wearable ceramic carrier roller and manufacturing method thereof - Google Patents
Anti-static wearable ceramic carrier roller and manufacturing method thereof Download PDFInfo
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- CN101654358A CN101654358A CN200910044313A CN200910044313A CN101654358A CN 101654358 A CN101654358 A CN 101654358A CN 200910044313 A CN200910044313 A CN 200910044313A CN 200910044313 A CN200910044313 A CN 200910044313A CN 101654358 A CN101654358 A CN 101654358A
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Abstract
The invention aims to provide an anti-static wearable ceramic carrier roller and a manufacturing method thereof. 5-60% of ceramic aggregate, 5% of hydroxymethyl cellulose, 3-5% of Sb2O5, 15-75% of Fe2O3, 3-5% of SnO2, 2-3% of titanium oxide and 3-7% of zinc oxide are adopted to be processed with the steps of proportioning, ball-milling, mud pressing, mud smelting, extruding for shaping, drying, sintering, assembling and the like or processed with the steps of proportioning, ball-balling, spray granulation, isostatic pressing, sintering, assembling and the like or processed with the steps of proportioning, ball-milling, mud casting, drying, sintering, assembling and the like. The service life of the anti-static wearable ceramic carrier roller is 15-48 months, wall thickness is 6-20mm, abrasive resistance is 3-5 times of that of a steel tube carrier roller, and weight is 2/3 that of the steel tube carrier roller; in addition, the anti-static wearable ceramic carrier roller resists acid for 98.6% and resists alkali for 84.7%, abrasion is smaller than 0.25%, and does not burn, and each performance index conforms to the national coal safety standard.
Description
Technical field
The present invention relates to a kind of anti-static wearable ceramic carrier roller and preparation method thereof.
Background technology
Rotary conveyor is widely used in the suitability for industrialized production of all trades and professions, and carrying roller is its important building block, and its wear resistance directly influences the production efficiency of rotary conveyor.The carrying roller of domestic rotary conveyor but has only about external 30-40% work-ing life, and this has seriously restricted the development of China's rotary conveyor.At present domestic traditional a kind of of endless belt conveyor is to adopt the steel pipe carrying roller, but the steel pipe carrying roller wears no resistance, and has only 5-6 month duration of service, also easily tears adhesive tape after indivedual steel pipe carrying roller iron sheets mills are saturating; Steel pipe carrying roller and belt friction produce static, adsorb powdered iron ore and dust etc., have strengthened the friction resistance of carrying roller and conveying belt, have shortened the life-span of steel pipe carrying roller and conveying belt; The steel pipe carrying roller easily gets rusty in severe environment such as soda acid, contaminated material; Some transfer roller high-altitude maintenance is inconvenient, the maintenance cost height, and also very serious to the wearing and tearing of conveying belt.
Another kind is to adopt the macromolecular material carrying roller to comprise rubber idler, nylon carrying roller and glass fibre carrying roller etc., but its wear resistance is limited, and poor fire, also has only 6-7 month work-ing life.Have some carrier rollers to occur now on the market, but its overall weight is 3-5 times of steel carrying roller and macromolecular material carrying roller.Though its vitrified pipe is wear-resisting like this, bearing wear is more much bigger than the two kinds of carrying rollers in front, thereby has seriously restricted its work-ing life, 8-10 month its duration of service; Its resistance is 5 * 10
13More than the Ω, in use the static charge of Chan Shenging can not in time be discharged, so this carrier roller does not use in the colliery now.
China's coal-mine quantity is many, surpasses the colliery sum of other countries of mainly mining in the world.The carrying roller that whole nation coal industry uses is just up to ten thousand/year of 500-1000, the marketable value height of carrying roller.Anti-static wearable ceramic carrier roller is at the various medicine food chemical industry that need anti-electrostatic simultaneously, and industry annual requirements such as metallurgical cement are ten thousand/year of 1000-4000, and every year is with 5% speed increment.At the problems referred to above and phenomenon, necessaryly work out a kind of new anti-static wearable carrying roller, solve the steel pipe carrying roller and wear no resistance, duration of service is short, and friction produces problems such as static; It is limited to solve macromolecular material carrying roller wear resistance, and poor fire has only 6-7 month work-ing life; The 3-5 that to solve existing carrier roller overall weight be steel carrying roller and macromolecular material carrying roller doubly, the big ratio of bearing wear, problem such as have only 8-10 month duration of service.
Summary of the invention
Technical problem to be solved by this invention provides a kind of anti-static wearable ceramic carrier roller and preparation method thereof.This carrying roller has following performance: the density of the anti-static wearable ceramic pipe in the anti-static wearable carrying roller is at 2.5-3.5g/cm
3, wall thickness is at 6-20mm, and thermal expansivity is in 3-8 * 10
-6/ K, bending strength 180-250MPa, resistance is 3 * 10
6-3 * 10
7Ω, good anti-static, water-intake rate 0-0.2% can bear-60 ℃ of-70 ℃ of temperature, the densification of body smooth surface, Mohs' hardness is at 7-9; Anti-static wearable carrying roller 15-48 in work-ing life month, wear resistance be the steel pipe carrying roller 3-5 doubly, weight be the steel pipe carrying roller 2/3, acidproof 98.6%, alkaline-resisting 84.7%, abrasion＜0.25%, do not burn and every performance index meet national safe coal standard.
Technical scheme of the present invention is: a kind of anti-static wearable ceramic carrier roller and preparation method thereof is characterized in that adopting following prescription and preparation method:
(1) prescription of anti-static wearable ceramic pipe (in weight ratio):
Anti-static wearable ceramic pipe prescription: 5-60% ceramic aggregate, 5% Walocel MT 20.000PV, 3-5%Sb
2O
5, 15-75%Fe
2O
3, 3-5%SnO
2, 2-3% titanium oxide, 3-7% zinc oxide.
Described ceramic aggregate is meant by several in aluminum oxide, aluminium vanadine, kaolin, silicon carbide, feldspar, barium carbonate and the microcrystalline glass powder or all by the composition of arbitrary proportion, perhaps only is made up of a kind of raw material.
(2) making method of anti-static wearable ceramic carrier roller
Making method 1
A, batching.With ceramic aggregate, Walocel MT 20.000PV, Sb
2O
5, Fe
2O
3, SnO
2, titanium oxide, zinc oxide prepare burden by the formula rate requirement;
B, ball milling.With above-mentioned compound ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.8 obtains ceramic size, after sieve;
C, press filt.The hybrid ceramic slip for preparing in the B step is dewatered in slip drying press, make moisture content about 25%, obtain mud cake;
D, pugging.With C step gained mud cake, in vacuum deairing machine, carry out pugging, obtain the mud section, and old 24h, obtain old mud section;
E, extrusion moulding.With the old mud section of D step gained, put into vacuum deairing machine and carry out extrusion moulding, obtain the wet base of anti-static wearable ceramic pipe;
F, drying.With the wet base of the anti-static wearable ceramic pipe of the E step gained 48h that dries in the shade, dry 12h in 70 ℃ of drying rooms obtains anti-static wearable ceramic pipe dry body again;
G, sintering.The anti-static wearable ceramic pipe dry body of F step gained is put into kiln reducing atmospheres such as shuttle kiln or tunnel furnace hang burning, heat-up rate with 3-15 ℃/min heats up, 1200 ℃ of-1350 ℃ of hot stages insulations 1-3 hour, obtain the anti-static wearable ceramic pipe;
H, assembling.With the anti-static wearable ceramic pipe of G step gained with have the labyrinth seal bearing and axle adopts a shrink-fit to assemble, paste one deck sealing ply in palace sealing member outside again, obtain anti-static wearable ceramic carrier roller;
Perhaps making method 2
A, batching.With ceramic aggregate, Walocel MT 20.000PV, Sb
2O
5, Fe
2O
3, SnO
2, titanium oxide, zinc oxide require batching in proportion;
B, ball milling.With above-mentioned compound ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.8, sieving obtains ceramic size;
C, mist projection granulating.The ceramic size of B step preparation is sent into the mist projection granulating tower carry out granulation, obtain the granulation powder;
D, moulding.Granulation powder in the C step is adopted the isostatic pressing method moulding, obtain anti-static wearable ceramic pipe dry body;
E, sintering.The anti-static wearable ceramic pipe dry body of D step gained is put into kiln reducing atmospheres such as shuttle kiln or tunnel furnace hang burning, heat-up rate with 3-15 ℃/min heats up, 1200 ℃ of-1350 ℃ of hot stages insulations 1-3 hour, obtain the anti-static wearable ceramic pipe;
F, assembling.With the anti-static wearable ceramic pipe of E step gained, have the labyrinth seal bearing and axle adopts a shrink-fit to assemble, paste one deck sealing ply in the labyrinth seal outside again, obtain anti-static wearable ceramic carrier roller;
Or making method 3
A, batching.With ceramic aggregate, Walocel MT 20.000PV, Sb
2O
5, Fe
2O
3, SnO
2, titanium oxide, zinc oxide prepare burden by the formula rate requirement;
B, ball milling.With above-mentioned compound ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.8 obtains ceramic size, after sieve;
C, injection forming.With hybrid ceramic slip common slip casting or slip casing by pressure or the centrifugal grouting moulding in gypsum mold for preparing in the B step;
D, drying.With the wet base of the anti-static wearable ceramic pipe of the C step gained 48h that dries in the shade, again 70 ℃ of bakings
Dry 12h in the room obtains anti-static wearable ceramic pipe dry body;
E, sintering.The anti-static wearable ceramic pipe dry body of D step gained is put into kiln reducing atmospheres such as shuttle kiln or tunnel furnace hang burning, heat-up rate with 3-15 ℃/min heats up, 1200 ℃ of-1350 ℃ of hot stages insulations 1-3 hour, obtain the anti-static wearable ceramic pipe;
F, assembling.With the anti-static wearable ceramic pipe of E step gained with have the labyrinth seal bearing and axle adopts a shrink-fit to assemble, paste one deck sealing ply in palace sealing member outside again, obtain anti-static wearable ceramic carrier roller;
Among the present invention, the ball milling of anti-static wearable ceramic carrier roller, press filt, pugging, drying, mist projection granulating all are known technology.
The present invention has following advantage:
1. adopt the anti-static wearable ceramic material to make the body material of carrying roller, this is the main body innovative point, and the resistance of now domestic carrier roller is 10
13More than the Ω, the static charge that produces in time can not be discharged, thereby can cause the electric charge enrichment, cause coal dust explosion.The resistance of the anti-static wearable ceramic carrier roller body of the present invention's development is 3 * 10
6-3 * 10
7Ω is much smaller than national standard 3 * 10
8Ω can discharge the static charge that produces fast, guarantees the operating safety in colliery.
2. adopt thin-walled anti-static wearable ceramic body, body thickness is reduced to 6-20mm from the 25mm of industry, carrying roller weight is 1/2 of existing carrier roller weight, it is 2/3 of steel carrying roller, because the weight that has alleviated carrying roller had so both prolonged 1 times of work-ing life of Idler bearing, save the operation energy consumption 25% of rotary conveyor again.Can industrialized production.
3. adopt the outside of labyrinth seal that one deck sealing ply is arranged again; double shielding is arranged like this; find under study for action; carrying roller inefficacy 80% is because bearing is subjected to due to the dust pollution; if solve this difficult problem; all use labyrinth seal abroad, but this can not solve dust pollution fully in the transportation and environment for use of complexity.Adding sealing ply one, solved this difficult problem at the skin of labyrinth seal fully, made prolong 60% the work-ing life of carrying roller.
4. bearing adopts labyrinth seal and vitrified pipe body formation shrink-fit, and assembly precision improves much like this, and production efficiency improves 15%, overcomes traditional error that the epoxy bond method causes of passing through, and it is low with production efficiency to cause the carrying roller motion to be obstructed.
Embodiment
The following stated example is understood the present invention in detail.In example, all umbers and per-cent are all by weight.
Embodiment 1
1, takes by weighing 300Kg aluminium vanadine, 300Kg kaolin, 50Kg Walocel MT 20.000PV, 30KgSb by prescription
2O
5, 240Kg Fe
2O
3, 30Kg SnO
2, 20Kg titanium oxide, 30Kg zinc oxide;
2, with the compound of 1 step ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.8, sieving obtains ceramic size 1800Kg;
3, the ceramic size of 2 steps preparation is sent into the mist projection granulating tower and carry out granulation, obtain granulation powder 1050Kg;
4, the 1050Kg granulation powder in 3 steps is adopted the isostatic pressing method moulding, obtain 300 of anti-static wearable ceramic pipe dry bodies;
5,300 dry bodies of anti-static wearable ceramic pipe of 4 step gained being put into kilns such as shuttle kiln or tunnel furnace carries out reducing atmosphere and hangs burning, heat-up rate with 5 ℃/min heats up, 1300 ℃ of hot stage insulations 2 hours, obtain 300 of anti-static wearable ceramic pipes;
6,300 anti-static wearable ceramic pipes of 5 step gained, 600 are had the labyrinth seal bearing and 300 axles adopt shrink-fit to assemble, paste one deck sealing ply in the labyrinth seal outside again, obtain 300 of anti-static wearable ceramic carrier rollers;
Embodiment 2
1, takes by weighing 45Kg aluminium vanadine, 30Kg kaolin, 15Kg feldspar, 50Kg Walocel MT 20.000PV, 30KgSb by prescription
2O
5, 750KgFe
2O
3, 30KgSnO
2, 20Kg titanium oxide, 30Kg zinc oxide;
2, with the compound of 1 step ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.8, sieving obtains ceramic size 1800Kg;
3, the 1800Kg hybrid ceramic slip for preparing in 2 steps is dewatered in slip drying press, make moisture content about 25%, obtain the 1250Kg mud cake;
4, with 3 step gained 1250Kg mud cakes, in vacuum deairing machine, carry out pugging, obtain 100 of mud sections, and old 24h, 100 of old mud sections obtained;
5, with 100 old mud sections of 4 step gained, put into vacuum deairing machine and carry out extrusion moulding, obtain 200 of the wet bases of anti-static wearable ceramic pipe;
6, the wet base of 200 anti-static wearable ceramic pipes of 5 step gained is dried in the shade 48h, dry 12h in 70 ℃ of drying rooms obtains 200 of anti-static wearable ceramic pipe dry bodies again;
7,200 dry bodies of anti-static wearable ceramic pipe of 6 step gained being put into kilns such as shuttle kiln or tunnel furnace carries out reducing atmosphere and hangs burning, heat-up rate with 5 ℃/min heats up, 1280 ℃ of hot stage insulations 2 hours, obtain 200 of anti-static wearable ceramic pipes;
8,200 anti-static wearable ceramic pipes of 7 step gained, 400 are had the labyrinth seal bearing and 200 axles adopt shrink-fit to assemble, paste one deck sealing ply in the labyrinth seal outside again, obtain 200 of anti-static wearable ceramic carrier rollers;
Embodiment 3
1, takes by weighing 30Kg aluminum oxide, 10Kg kaolin, 10Kg feldspar, 4Kg barium carbonate, 5Kg Walocel MT 20.000PV, 3KgSb by prescription
2O
5, 30KgFe
2O
3, 3KgSnO
2, 2Kg titanium oxide, 3Kg zinc oxide;
2, with the compound of 1 step ball milling 24 hours in ball mill, wherein material: ballstone: water=1: 2: 0.3, sieving obtains ceramic size 130Kg;
3, will behind the 130Kg hybrid ceramic slip injection 15 cover gypsum mold injection forming 10h that prepare in 2 steps redundant sizing agent be poured out;
4, the wet base of 15 anti-static wearable ceramic pipes of 3 step gained is dried in the shade 48h, dry 12h in 70 ℃ of drying rooms obtains 15 of anti-static wearable ceramic pipe dry bodies again;
5,15 anti-static wearable ceramic pipe dry bodies of 4 step gained are put into kiln reducing atmospheres such as shuttle kiln or tunnel furnace and hang burning, heat-up rate with 3-15 ℃/min heats up, 1200 ℃ of-1350 ℃ of hot stages insulations 1-3 hour, obtain the anti-static wearable ceramic pipe;
6,15 anti-static wearable ceramic pipes of 5 step gained, 30 are had the labyrinth seal bearing and 15 axles adopt shrink-fit to assemble, paste one deck sealing ply in the labyrinth seal outside again, obtain 15 of anti-static wearable ceramic carrier rollers.
Claims (7)
1. an anti-static wearable ceramic carrier roller is characterized in that: adopt following proportioning: (by weight percentage)
The 5-60% ceramic aggregate, 5% Walocel MT 20.000PV, 3-5%Sb
2O
5, 15-75%Fe
2O
3, 3-5%SnO
2, 2-3% titanium oxide, 3-7% zinc oxide.
2. according to the described anti-static wearable ceramic carrier roller of claim 1, it is characterized in that: described ceramic aggregate is meant several in aluminum oxide, aluminium vanadine, kaolin, silicon carbide, feldspar, barium carbonate and the microcrystalline glass powder or all by the composition of arbitrary proportion, perhaps only is made up of a kind of raw material.
3. preparation method who prepares the described anti-static wearable ceramic carrier roller of claim 1, can adopt operations such as batching, ball milling, press filt, pugging, moulding, drying, sintering and assembling, it is characterized in that: it is characterized in that: described moulding is meant the employing extruding forming method.
4. the preparation method of anti-static wearable ceramic carrier roller according to claim 3, it is characterized in that: described sintering, be meant with reducing atmosphere and hang firing technique, heat up, 1200 ℃ of-1350 ℃ of hot stages insulations 1-3 hour with the heat-up rate of 10-15 ℃/min.
5. the preparation method of anti-static wearable ceramic carrier roller according to claim 3, it is characterized in that: described assembling, be meant the anti-static wearable ceramic pipe, have the labyrinth seal bearing and axle adopts a shrink-fit to assemble, paste one deck sealing ply in the labyrinth seal outside again, obtain anti-static wearable ceramic carrier roller.
6. a preparation method who prepares the described anti-static wearable ceramic carrier roller of claim 1 can also adopt operation preparations such as batching, ball milling, mist projection granulating, isostatic pressing, sintering and assembling, and it is characterized in that: described moulding is meant isostatic pressing.
7. preparation method who prepares the described anti-static wearable ceramic carrier roller of claim 1, can also adopt operation preparations such as batching, ball milling, injection forming, drying, sintering and assembling, it is characterized in that: described moulding is meant common injection forming or slip casing by pressure moulding or centrifugal grouting moulding.
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Cited By (10)
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| CN102303209A (en) * | 2011-02-14 | 2012-01-04 | 黄文才 | Method for manufacturing yarn roller of computer flat knitting machine |
| CN102674807A (en) * | 2012-06-12 | 2012-09-19 | 湖北大地环保设备有限公司 | Underground anti-static ceramic roller and preparation method thereof |
| CN102729318A (en) * | 2011-04-07 | 2012-10-17 | 佛山市南海金刚新材料有限公司 | Ceramic roller molding process |
| CN102731099A (en) * | 2011-04-07 | 2012-10-17 | 佛山市南海金刚新材料有限公司 | Spray granulation processing technology of ceramic rod blank |
| CN102863226A (en) * | 2011-07-07 | 2013-01-09 | 佛山市南海金刚新材料有限公司 | Preparation process of ceramic roller rod |
| CN102874571A (en) * | 2012-08-20 | 2013-01-16 | 陈黎娜 | Manufacturing method for carrier roller and roller body of belt conveyor |
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| CN105236999A (en) * | 2015-09-11 | 2016-01-13 | 洛阳科创新材料股份有限公司 | Preparation method for normalizing-furnace hearth roll |
| CN108395219A (en) * | 2018-01-12 | 2018-08-14 | 海南大学 | A kind of carrying roller ceramic material and preparation method thereof |
| CN108726996A (en) * | 2018-04-30 | 2018-11-02 | 浙江中硅新材料有限公司 | A kind of production technology of antistatic property ceramic rod |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303209A (en) * | 2011-02-14 | 2012-01-04 | 黄文才 | Method for manufacturing yarn roller of computer flat knitting machine |
| CN102729318B (en) * | 2011-04-07 | 2014-09-03 | 佛山市南海金刚新材料有限公司 | Ceramic roller molding process |
| CN102729318A (en) * | 2011-04-07 | 2012-10-17 | 佛山市南海金刚新材料有限公司 | Ceramic roller molding process |
| CN102731099A (en) * | 2011-04-07 | 2012-10-17 | 佛山市南海金刚新材料有限公司 | Spray granulation processing technology of ceramic rod blank |
| CN102731099B (en) * | 2011-04-07 | 2014-07-09 | 佛山市南海金刚新材料有限公司 | Spray granulation processing technology of ceramic rod blank |
| CN102863226A (en) * | 2011-07-07 | 2013-01-09 | 佛山市南海金刚新材料有限公司 | Preparation process of ceramic roller rod |
| CN102674807A (en) * | 2012-06-12 | 2012-09-19 | 湖北大地环保设备有限公司 | Underground anti-static ceramic roller and preparation method thereof |
| CN102874571A (en) * | 2012-08-20 | 2013-01-16 | 陈黎娜 | Manufacturing method for carrier roller and roller body of belt conveyor |
| CN103253490A (en) * | 2013-04-26 | 2013-08-21 | 湖北红花高温材料有限公司 | Ceramic supporting wheel made of forsterite and preparation method thereof |
| CN103253490B (en) * | 2013-04-26 | 2015-11-18 | 湖北红花高温材料有限公司 | A kind of take forsterite as ceramic support roller of raw material and preparation method thereof |
| CN105236999A (en) * | 2015-09-11 | 2016-01-13 | 洛阳科创新材料股份有限公司 | Preparation method for normalizing-furnace hearth roll |
| CN108395219A (en) * | 2018-01-12 | 2018-08-14 | 海南大学 | A kind of carrying roller ceramic material and preparation method thereof |
| CN108395219B (en) * | 2018-01-12 | 2020-04-17 | 海南大学 | Ceramic material for carrier roller and preparation method thereof |
| CN108726996A (en) * | 2018-04-30 | 2018-11-02 | 浙江中硅新材料有限公司 | A kind of production technology of antistatic property ceramic rod |
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Application publication date: 20100224 |