CN104671747A - A rare earth aluminum oxide ceramic roller and a preparing method thereof - Google Patents
A rare earth aluminum oxide ceramic roller and a preparing method thereof Download PDFInfo
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- CN104671747A CN104671747A CN201310604659.3A CN201310604659A CN104671747A CN 104671747 A CN104671747 A CN 104671747A CN 201310604659 A CN201310604659 A CN 201310604659A CN 104671747 A CN104671747 A CN 104671747A
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Abstract
The invention discloses a rare earth aluminum oxide ceramic roller and a preparing method thereof, and particularly relates to a rare earth aluminum oxide ceramic roller used in a mainstream wide roller kiln for firing floor tiles and a preparing method thereof. The technical problems to be overcome are that common ceramic rollers at present are thick in wall, and are large in high-temperature deformation, easy to bend, and liable to damage under quick cooling and quick heating conditions during using processes. The ceramic roller is prepared from following raw materials by weight: 15-20 parts of porcelain clay, 8-15 parts of ball clay, 20-35 parts of calcinated aluminum oxide, 25-45 parts of fused alumina, 3-9 parts of zirconium silicate and 0.3-1 part of a rare earth oxide the melting point of which is higher than 2400 DEG C. By adopting the technical scheme, high-temperature strength and bearing capacity of the ceramic roller are improved, and the horizontal operation degree of floor tiles in wide roller kilns is largely increased, thus ensuring the yield of the floor tiles.
Description
Technical field
The present invention relates to a kind of ceramic rod, be specifically related to a kind ofly be used in rare earth alumina ceramic rod instantly burnt till on wide roller kiln that floor tile is main flow and preparation method thereof.
Background technology
High resistance roller rod be mainly used in instantly burn till floor tile main flow wide roller kiln on, wide roller kiln work inner width > 3m, common roller-way firer makes inner width 2.5-2.7m, the increase of work inner width, the more common kiln of the output of wide roller kiln is made to improve 30%(for 800mm*800mm and 600mm*600mm floor tile, common kiln burns till 2 pieces and 3 pieces respectively side by side, and wide roller kiln burns till 3 pieces and 4 pieces side by side); Simultaneously advanced kiln technological design and the use of novel energy-conserving firing system, make wide roller kiln in unit consumption of energy, be better than common kiln.
Existing wide roller kiln only uses the roller rod of external diameter 60mm and 65mm two kinds of external diameter specifications, length is at 4.4m-4.6m, two specification length-to-diameter ratio scopes are respectively between 73-77 and 67-71, wall thickness is at 6.3mm-6.5mm, the common kiln of same specification roller rod uses length within 4.2m, length-to-diameter ratio is less than 70 and 65 respectively, the raising of output, the roller rod length-to-diameter ratio (ratio of roller rod length and external diameter, the roller rod of equal material specification, when being subject to equivalent effect power, length-to-diameter ratio is larger, roller rod is more bending and fracture) increase and the increase of carrying, the high temperature of wide roller kiln roller rod is carried, the physicalies such as hot strength and high temperature anti-crawl agentdefiection are comparatively conventional roller rod improve 20% also.But also there is following shortcoming in ceramic rod conventional at present: wide roller kiln roller rod wall thickness is thicker, in use procedure, high temperature deformation amount is comparatively large, flexible, fragile in rapid heat cycle situation, in wide roller kiln, the level run degree of floor tile is low, thus the yield rate of floor tile is low.
Summary of the invention
The technical problem to be solved in the present invention is that the ceramic rod wall thickness commonly used at present is thicker, in use procedure, high temperature deformation amount is comparatively large, flexible, fragile in rapid heat cycle situation, there is provided a kind of high temperature deformation amount little, rare earth alumina ceramic rod of resistance to rapid heat cycle and preparation method thereof.
For achieving the above object, the present invention adopts following technical proposals: a kind of rare earth alumina ceramic rod and preparation method thereof, it is made up of the raw material of following weight part: china clay 15-20 parts, ball clay 8-15 parts, Calcined polishing aluminum oxide 20-35 parts, fused corundom 25-45 parts, zirconium silicate 3-9 parts, and fusing point is higher than rare earth oxide 0.3-1 part of 2400 degree.
It is made up of the raw material of following weight part: china clay 16-18 parts, ball clay 10-13 parts, Calcined polishing aluminum oxide 25-30 part, fused corundom 30-40 part, zirconium silicate 4-8 part, and fusing point is higher than rare earth oxide 0.5-0.8 part of 2400 degree.
It is made up of the raw material of following weight part: china clay 17 parts, ball clay 12 parts, Calcined polishing aluminum oxide 28 parts, fused corundom 35 parts, zirconium silicate 6 parts, and fusing point is higher than the rare earth oxide 0.6 part of 2400 degree.
The preparation method of rare earth alumina ceramic rod, it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, injects raw material gross weight 1-2 water mixing doubly and make slip in 4-6 hour in ball mill by wet process; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 2-5 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1500-1600 degree and make ceramic rod in 42-60 hour, go out cellar for storing things.
The present invention of technique scheme is adopted to have following advantage: 1, sintering reaction power is increased when introducing the rare earth oxide of fusing point higher than 2400 degree, reduce firing temperature, prior art firing temperature is close to 1580 degree, 30-40 degree is reduced after introducing rare earth oxide, thus the distance of the substrate material molecule that furthers, strengthen lattice energy, improve roller rod volume density, reduce void content, compact siro spinning technology between material molecule further reduces again the generation of substrate defects, under the prerequisite improving roller rod hot strength and bending resistance change ability, take into account again a part of heat impact strength.2, terminate in temperature-fall period in the insulation of roller rod, 1100 degree to 1200 degree time, can effectively suppress " geneva phase transformation " that a part of crystal of zirconium oxide transforms from tetragonal structure to monoclinic form, retain the better square zirconium white of high-temperature stability, reduce the tiny crack because " geneva phase transformation " crystal of zirconium oxide volumetric expansion causes, improve the roller rod compactness of matrix and the bonding strength between matrix and aggregate, improve roller rod high temperature Bending property.3, the generation of low-melting-point glass phase in roller rod can also be suppressed, in sintering process, a part of rare earth oxide moves in glassy phase, due to the intervention of rare earth oxide, changes the composition of roller rod low-melting-point glass phase, add the high temperature viscosity of glassy phase, improve hot strength and the carrying of roller rod.
The ceramic rod wall thickness that the present invention makes can be down to 6-6.3mm by more general wide roller kiln roller rod, estimate in use procedure that high temperature deformation amount is 4mm, normality 3 linearitys reach 0.04%, resistance to thermal shocks is 4-5 time, product performance are better than conventional ceramic roller rod, the level run degree of floor tile in wide roller kiln is improved greatly, thus better ensure the yield rate of floor tile, the raising of level run degree is because in roller rod insertion roller kiln side by side, roller rod just defines the plane of a load carrying floor brick, when floor tile burns till, the hot bending of roller rod is less, this plane is more flat, better to the quality of floor tile, namely level run degree is high, otherwise roller rod is bending large, then this face is high with regard to the low both sides, centre become, floor tile easily collides.
Embodiment
A kind of rare earth alumina ceramic rod, it is made up of the raw material of following weight part: china clay 15-20 parts, ball clay 8-15 parts, Calcined polishing aluminum oxide 20-35 parts, fused corundom 25-45 parts, zirconium silicate 3-9 parts, and fusing point is higher than rare earth oxide 0.3-1 part of 2400 degree.
It is made up of the raw material of following weight part: china clay 16-18 parts, ball clay 10-13 parts, Calcined polishing aluminum oxide 25-30 part, fused corundom 30-40 part, zirconium silicate 4-8 part, and fusing point is higher than rare earth oxide 0.5-0.8 part of 2400 degree.
It is made up of the raw material of following weight part: china clay 17 parts, ball clay 12 parts, Calcined polishing aluminum oxide 28 parts, fused corundom 35 parts, zirconium silicate 6 parts, and fusing point is higher than the rare earth oxide 0.6 part of 2400 degree.
Raw material granularity of the present invention joins level: 0.5-4 μm of granularity weight part is 28-35 part, a 4-5 μm granularity weight part is 26-33 part, a 20-150 μm granularity weight part is 37-44 part.
The preparation method of rare earth alumina ceramic rod, it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, injects raw material gross weight 1-2 water mixing doubly and make slip in 4-6 hour in ball mill by wet process; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 2-5 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1500-1600 degree and make ceramic rod in 42-60 hour, go out cellar for storing things.
The specific embodiment of raw material of the present invention is as follows:
Embodiment 1: china clay 17kg, ball clay 12 kg, Calcined polishing aluminum oxide 28 kg, fused corundom 35 kg, zirconium silicate 6 kg, fusing point is higher than rare earth oxide 0.6 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1 times in ball mill by wet process mixes 6 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 2 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1500 degree and make ceramic rod in 42 hours, go out cellar for storing things.
Embodiment 2: china clay 15kg, ball clay 8 kg, Calcined polishing aluminum oxide 20 kg, fused corundom 25 kg, zirconium silicate 3kg, fusing point is higher than rare earth oxide 0.3 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 2 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 5 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1600 degree and make ceramic rod in 60 hours, go out cellar for storing things.
Embodiment 3: china clay 20kg, ball clay 15kg, Calcined polishing aluminum oxide 35 kg, fused corundom 45 kg, zirconium silicate 9kg, fusing point is higher than rare earth oxide 1 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1.5 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 3 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1550 degree and make ceramic rod in 45 hours, go out cellar for storing things.
Embodiment 4: china clay 16kg, ball clay 10kg, Calcined polishing aluminum oxide 25 kg, fused corundom 30 kg, zirconium silicate 4kg, fusing point is higher than rare earth oxide 0.5 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1.8 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 4 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1580 degree and make ceramic rod in 50 hours, go out cellar for storing things.
Embodiment 5: china clay 18kg, ball clay 13kg, Calcined polishing aluminum oxide 30 kg, fused corundom 40 kg, zirconium silicate 8kg, fusing point is higher than rare earth oxide 0.8 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1.6 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 5 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1520 degree and make ceramic rod in 49 hours, go out cellar for storing things.
Embodiment 6: china clay 15kg, ball clay 10kg, Calcined polishing aluminum oxide 30 kg, fused corundom 36 kg, zirconium silicate 8kg, fusing point is higher than rare earth oxide 1 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1.3 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 3 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1590 degree and make ceramic rod in 55 hours, go out cellar for storing things.
Embodiment 7: china clay 20kg, ball clay 13kg, Calcined polishing aluminum oxide 27 kg, fused corundom 34 kg, zirconium silicate 5kg, fusing point is higher than rare earth oxide 1 kg of 2400 degree.
Its preparation method comprises the following steps: it comprises the following steps: 1, taken by corresponding weight part by above-mentioned raw materials, and the water injecting raw material gross weight 1.8 times in ball mill by wet process mixes 4 hours and makes slip; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 3 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1590 degree and make ceramic rod in 45 hours, go out cellar for storing things.
Claims (4)
1. a rare earth alumina ceramic rod, it is characterized in that: it is made up of the raw material of following weight part: china clay 15-20 parts, ball clay 8-15 parts, Calcined polishing aluminum oxide 20-35 parts, fused corundom 25-45 parts, zirconium silicate 3-9 parts, fusing point is higher than rare earth oxide 0.3-1 part of 2400 degree.
2. rare earth alumina ceramic rod according to claim 1, it is characterized in that: it is made up of the raw material of following weight part: china clay 16-18 parts, ball clay 10-13 parts, Calcined polishing aluminum oxide 25-30 part, fused corundom 30-40 part, zirconium silicate 4-8 part, fusing point is higher than rare earth oxide 0.5-0.8 part of 2400 degree.
3. rare earth alumina ceramic rod according to claim 2, it is characterized in that: it is made up of the raw material of following weight part: china clay 17 parts, ball clay 12 parts, Calcined polishing aluminum oxide 28 parts, fused corundom 35 parts, zirconium silicate 6 parts, fusing point is higher than the rare earth oxide 0.6 part of 2400 degree.
4. the preparation method of the rare earth alumina ceramic rod according to any one of claim 1-3, it is characterized in that: it comprises the following steps: 1, above-mentioned raw materials is taken by corresponding weight part, in ball mill by wet process, inject raw material gross weight 1-2 water mixing doubly make slip in 4-6 hour; 2, step 1 finish mix slurry is made mud cake by dewatering through pressure filter after the vibratory screening apparatus removal of impurity; 3, mud cake is made mud post by vacuum deairing machine, ageing 2-5 days; 4, the mud post after ageing makes the pipe work in-process of various outer diameter and length by vacuum-extruder, dry; 5, dried pipe work in-process are mounted in shuttle kiln, burn till under 1500-1600 degree and make ceramic rod in 42-60 hour, go out cellar for storing things.
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| CN201310604659.3A CN104671747B (en) | 2013-11-26 | 2013-11-26 | A kind of rare earth alumina ceramic rod and preparation method thereof |
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| CN104671747A true CN104671747A (en) | 2015-06-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020567A (en) * | 2018-08-08 | 2018-12-18 | 河津市欣中达精细陶瓷有限公司 | The formula and its manufacture craft of the aluminium oxide of resistance to rapid heat cycle roller stick |
Citations (4)
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| US3380849A (en) * | 1964-04-17 | 1968-04-30 | Du Pont | Alumina-zircon ceramic coatings and bodies |
| US5096858A (en) * | 1989-09-19 | 1992-03-17 | The University Of British Columbia | In situ production of silicon carbide reinforced ceramic composites |
| CN103073273A (en) * | 2011-11-18 | 2013-05-01 | 常熟市创新陶瓷有限公司 | Alumina toughened ceramic and preparation method thereof |
| CN104987113A (en) * | 2015-07-24 | 2015-10-21 | 合肥凯士新材料贸易有限公司 | Zirconium silicate whisker modified tabular alumina porous ceramic used in LED lamp heat dissipation, and preparation method thereof |
-
2013
- 2013-11-26 CN CN201310604659.3A patent/CN104671747B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3380849A (en) * | 1964-04-17 | 1968-04-30 | Du Pont | Alumina-zircon ceramic coatings and bodies |
| US5096858A (en) * | 1989-09-19 | 1992-03-17 | The University Of British Columbia | In situ production of silicon carbide reinforced ceramic composites |
| CN103073273A (en) * | 2011-11-18 | 2013-05-01 | 常熟市创新陶瓷有限公司 | Alumina toughened ceramic and preparation method thereof |
| CN104987113A (en) * | 2015-07-24 | 2015-10-21 | 合肥凯士新材料贸易有限公司 | Zirconium silicate whisker modified tabular alumina porous ceramic used in LED lamp heat dissipation, and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020567A (en) * | 2018-08-08 | 2018-12-18 | 河津市欣中达精细陶瓷有限公司 | The formula and its manufacture craft of the aluminium oxide of resistance to rapid heat cycle roller stick |
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| CN104671747B (en) | 2016-08-17 |
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