CN102491762B - High-temperature fireproof kiln material and preparing method thereof - Google Patents
High-temperature fireproof kiln material and preparing method thereof Download PDFInfo
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Abstract
The invention discloses a high-temperature fireproof kiln material, which comprises the following components, by weight, 40 to 80 parts of aluminum oxide, 40 to 60 parts of 80-mesh white corundum, 1 to 10 parts of secondary ripe porcelain, 2 to 8 parts of Suzhou lime sludge, 1 to 4 parts of silicon dioxide, 0.2 to 1.0 part of oleic acid, 3.2 to 7.8 parts of paraffin wax, 1.2 to 2.4 parts of wax and 0.1 to 0.5 part of ammonium polyacrylate. Air holes of the kiln material utilizing the secondary ripe porcelain as raw materials are more compact and higher in density, and the kiln material is much lower in contractibility rate and high in heat and shock resistance stability, is not easy to burst when used at a high temperature, capable of bearing high temperature ranging from 1800 DEG C to 2000 DEG C, long in service life and has excellent performances of high strength, high fire resistance, high wear resistance and the like by the aid of the secondary ripe porcelain which is resistant to high temperature and high in wear resistance. Further, the secondary ripe porcelain as waste can be recycled, so that cost is saved, waste can be changed into treasure, and pollution to the environment is reduced. The high-temperature fireproof kiln material is simple in preparing process, easy to control in conditions and can be produced in large scale industrially.
Description
Technical field
The present invention relates to a kind of refractory materials, relate in particular to a kind of high-temperature flame-proof kiln furniture material and preparation method thereof.
Background technology
Kiln furnitures are a kind of high grade refractories, and its quality quality has direct influence for the quality of burnt product, production cost.The material of kiln furnitures should possess higher refractoriness, good thermostability, higher normal temperature and hot strength, its goods that must stand and the load of kiln furnitures itself, good thermal conductivity, low heat storing and antioxidant property.
Since the eighties, carry out ceramic Fast Sintering technology both at home and abroad, silicon carbide ceramics becomes the preferred material that the Fast Sintering kiln is used Hightemperature Kiln Furniture, but there is the high-temperature oxide problem in the silicon carbide kiln furniture material, be that volumetric expansion can take place the high temperature oxidation product, make the kiln furnitures short texture, so that crack and directly influence work-ing life and the quality of kiln furnitures, at present, this problem is not well solved yet.
Adopt aluminum oxide as kiln furniture material because the character of aluminum oxide own limits, the kiln furniture material shrinking percentage of producing is big, density is low, pore size is big and be difficult to control, so the anti-thermal shock poor stability, high temperature uses easy explosion, when temperature is above above 1250 degree, high-temperature load raises with temperature and descends rapidly, and work-ing life is short.
Summary of the invention
The present invention is just in order to overcome above-mentioned deficiency, and technical problem to be solved provides that a kind of shrinking percentage is low, the high-temperature flame-proof kiln furniture material of stable strong, the long service life of anti-thermal shock.
The technical problem that the present invention also will solve provides the preparation method of above-mentioned high-temperature flame-proof kiln furniture material.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 90～95 parts of aluminium sesquioxides, 2～5 parts of calcium carbonate, 1～3 part of kaolin, 1.2～2.5 parts of silicon powders and 0.2～2 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 10～15 parts of paraffin, 0.2～0.6 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
As preferred version, a kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 93 parts of aluminium sesquioxides, 3 parts of calcium carbonate, 1.5 parts of kaolin, 1.6 parts of silicon powders and 0.8 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 13 parts of paraffin, 0.4 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
The preparation method of the fire-resistant kiln furniture material of above-mentioned temperature comprises the steps:
1, measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
2, the raw material in the step 1 is carried out ball mill mixing, be crushed to 300～400 orders;
3, by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture,, filter with 150～200 eye mesh screens then;
4, add in the step 3 wax liquid after 10%～20% the filtration in the container, the raw material that adds in the step 1 10%～20% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add the formula ratio ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 10～14 hours;
5, the slurry that mixes in the step 4 is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6Mpa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
6, adopt 25～30% γ-Al2O3 and 70～75% potter's clay mixtures to carry out de-waxing as wax removing powder, sintering gets product then.
Wherein, preferably, described binder burnout temperature condition control is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
Wherein, preferably, described sintering temperature condition control is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
Beneficial effect: high-temperature flame-proof kiln furniture material of the present invention, with the ripe porcelain of secondary as raw material, make the pore of kiln furniture material finer and close, density is bigger and since the ripe porcelain of secondary high temperature resistant, wear resistance is strong, the shrinking percentage of kiln furniture material is significantly reduced, anti-thermal shock stability is strong, and high temperature uses and is difficult for explosion, 1800～2000 ℃ the high temperature of loading, long service life has excellent performance such as high strength, refractoriness and high abrasion; In addition, the ripe porcelain of secondary is waste material, with its recycling, not only saves cost, becomes Fei Weibao, and reduces the pollution to environment.Preparation technology of the present invention is simple, and condition is easy to control, can realize large-scale industrialization production.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to various equivalents of the present invention or modification.
Embodiment 1:
A kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 93 parts of aluminium sesquioxides, 3 parts of calcium carbonate, 1.5 parts of kaolin, 1.6 parts of silicon powders and 0.8 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 13 parts of paraffin, 0.4 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
The preparation method of the fire-resistant kiln furniture material of above-mentioned temperature comprises the steps:
1, measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
2, the raw material in the step 1 is carried out ball mill mixing, be crushed to 300～400 orders;
3, by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture, filter with 150～200 eye mesh screens then;
4, add in the step 3 wax liquid after 15% the filtration in the container, the raw material that adds in the step 1 15% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add the formula ratio ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 12 hours;
5, the slurry that mixes in the step 4 is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6Mpa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
6, adopt 25% γ-Al2O3 and 75% potter's clay mixture to carry out de-waxing as wax removing powder, sintering gets product then,
Wherein, the control binder burnout temperature is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
The control sintering temperature is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
Embodiment 2:
A kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 90 parts of aluminium sesquioxides, 2 parts of calcium carbonate, 1 part of kaolin, 1.2 parts of silicon powders and 0.2 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 10 parts of paraffin, 0.2 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
The preparation method of the fire-resistant kiln furniture material of above-mentioned temperature comprises the steps:
1, measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
2, the raw material in the step 1 is carried out ball mill mixing, be crushed to 300～400 orders;
3, by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture, filter with 150～200 eye mesh screens then;
4, add in the step 3 wax liquid after 10% the filtration in the container, the raw material that adds in the step 1 10% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add the formula ratio ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 10 hours;
5, the slurry that mixes in the step 4 is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6Mpa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
6, adopt 25% γ-Al2O3 and 75% potter's clay mixture to carry out de-waxing as wax removing powder, sintering gets product then,
Wherein, the control binder burnout temperature is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
The control sintering temperature is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
Embodiment 3:
A kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 92 parts of aluminium sesquioxides, 2 parts of calcium carbonate, 1 part of kaolin, 1.2 parts of silicon powders and 1.5 parts of chromic oxide batchings, be crushed to 300～400 orders;
(2) 12 parts of paraffin, 0.2 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
The preparation method of the fire-resistant kiln furniture material of above-mentioned temperature comprises the steps:
1, measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
2, the raw material in the step 1 is carried out ball mill mixing, be crushed to 300～400 orders;
3, by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture,, filter with 150～200 eye mesh screens then;
4, add in the step 3 wax liquid after 15% the filtration in the container, the raw material that adds in the step 1 15% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add the formula ratio ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 12 hours;
5, the slurry that mixes in the step 4 is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6Mpa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
6, adopt 30% γ-Al2O3 and 70% potter's clay mixture to carry out de-waxing as wax removing powder, sintering gets product then,
Wherein, the control binder burnout temperature is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
The control sintering temperature is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
Embodiment 4:
A kind of high-temperature flame-proof kiln furniture material, it comprises the component of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 95 parts of aluminium sesquioxides, 5 parts of calcium carbonate, 3 parts of kaolin, 2.5 parts of silicon powders and 2 parts of chromic oxide batchings, be crushed to 300～400 orders;
(2) 13 parts of paraffin, 0.4 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MP, 60～70 ℃ of condition compacted unders.
(4) de-waxing, burn till and get product.
The preparation method of the fire-resistant kiln furniture material of above-mentioned temperature comprises the steps:
1, measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
2, the raw material in the step 1 is carried out ball mill mixing, be crushed to 300～400 orders;
3, by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture, filter with 150～200 eye mesh screens then;
4, add in the step 3 wax liquid after 20% the filtration in the container, the raw material that adds in the step 1 20% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add the formula ratio ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 14 hours;
5, the slurry that mixes in the step 4 is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6Mpa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
6, adopt 30% γ-Al2O3 and 70% potter's clay mixture to carry out de-waxing as wax removing powder, sintering gets product then,
Wherein, the control binder burnout temperature is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
The control sintering temperature is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
Embodiment 5
The high-temperature flame-proof kiln furniture material of above-described embodiment 1～gained is carried out Performance Detection, as shown in the table:
Claims (5)
1. high-temperature flame-proof kiln furniture material is characterized in that it comprises the raw material of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 90～95 parts of aluminium sesquioxides, 2～5 parts of calcium carbonate, 1～3 part of kaolin, 1.2～2.5 parts of silicon powders and 0.2～2 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 10～15 parts of paraffin, 0.2～0.6 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MPa, 60～70 ℃ of condition compacted unders;
(4) de-waxing, burn till and get product.
2. a kind of high-temperature flame-proof kiln furniture material according to claim 1, it comprises the raw material of following parts by weight:
Wherein, the ripe porcelain of described secondary is prepared from by following method:
(1) by weight, will carry out ball milling, batch mixing after 93 parts of aluminium sesquioxides, 3 parts of calcium carbonate, 1.5 parts of kaolin, 1.6 parts of silicon powders and 0.8 part of chromic oxide batching, be crushed to 300～400 orders;
(2) 13 parts of paraffin, 0.4 part of oleic acid are heated to fusing;
(3) raw material in the step (1) is anhydrated the back to the paraffin and the oleic acid that wherein add the fusing in the step (2), mix the back and adopt injection moulding at 0.5MPa, 60～70 ℃ of condition compacted unders;
(4) de-waxing, burn till and get product.
3. a method for preparing the described high-temperature flame-proof kiln furniture material of claim 1 is characterized in that, comprises the steps:
(1) measures raw material by prescription, aluminium sesquioxide, 80 order white fused aluminas, the ripe porcelain of secondary, Suzhou white clay and silicon-dioxide are heated to 160～180 ℃, dried 6～8 hours, naturally cool to room temperature then;
(2) raw material in the step (1) is carried out ball mill mixing, be crushed to 300～400 orders;
(3) by formula ratio oleic acid, paraffin and beeswax are mixed into wax liquid, are heated to 100～120 ℃ of moisture of removing in the mixture, filter with 150～200 eye mesh screens then;
(4) add in the step (3) wax liquid after 10%～20% the filtration in the container, the raw material that adds in the step (1) 10%～20% oven dry then stirs, add raw material and wax liquid while stirring, add a half and begin slowly to add 0.1～0.5 part of ammonium polyacrylate, continue to add remaining raw material and wax liquid simultaneously, after adding finishes, stir and mixed form slurry in 10～14 hours;
(5) slurry that mixes in the step (4) is adopted hot die-casting molding, wherein, forming pressure is 0.4～0.6MPa, and die temperature is 25～30 ℃, and slurry temperature is 60～70 ℃;
(6) adopt 25～30% γ-Al
2O
3Carry out de-waxing with 70～75% potter's clay mixtures as wax removing powder, sintering gets product then.
4. the method for preparing the high-temperature flame-proof kiln furniture material according to claim 3 is characterized in that: described binder burnout temperature condition control is as follows:
Room temperature to 750 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h, and insulation is 1 hour during to 750 ℃;
750～920 ℃ of scopes heat up with 200 ℃/h speed, and insulation is 1 hour to 920 ± 20 ℃ of scopes, come out of the stove after naturally cooling to room temperature.
5. the method for preparing the high-temperature flame-proof kiln furniture material according to claim 3 is characterized in that: described sintering temperature condition control is as follows:
Room temperature to 900 ℃ at the uniform velocity heats up with the speed of 110～120 ℃/h;
900～1300 ℃ of speed with 60 ℃/h at the uniform velocity heat up, and insulation is 2 hours under 1700 ± 20 ℃ of temperature, comes out of the stove after naturally cooling to room temperature.
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| CN103274709B (en) * | 2013-06-13 | 2014-05-28 | 常熟市塔帕工业陶瓷有限公司 | Ceramic load bearing board |
| CN104501603B (en) * | 2014-12-29 | 2016-08-24 | 临沂临虹无机材料有限公司 | Novel energy-conserving ceramic capacitor sintering kiln furnitures and the manufacture method of kiln furniture material |
| CN107540346B (en) * | 2017-10-12 | 2021-03-05 | 福建省德化臻南陶瓷有限公司 | High-temperature-resistant ceramic baking bowl and manufacturing process thereof |
| CN110734042A (en) * | 2018-07-20 | 2020-01-31 | 淄博华庆耐火材料有限公司 | corundum-SiAlON-silicon nitride gradient brick for sulfur recovery reaction furnace and preparation process thereof |
| CN112430070A (en) * | 2020-12-09 | 2021-03-02 | 常熟市创新陶瓷有限公司 | High-wear-resistance ceramic material, preparation method thereof and manufacturing method of ceramic plunger |
| CN114180944B (en) * | 2021-11-18 | 2023-04-11 | 新化柏盛陶瓷科技有限公司 | Large-size industrial ceramic hot-pressing manufacturing method |
| CN116768609A (en) * | 2022-07-29 | 2023-09-19 | 苏州瑞瓷新材料科技有限公司 | Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics |
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| CN1180678A (en) * | 1996-10-17 | 1998-05-06 | 唐山马家沟耐火材料厂 | Mohrkete iolite kiln furnitures material |
| CN101844931A (en) * | 2010-05-17 | 2010-09-29 | 徐生富 | Silicon carbide high temperature ceramic kiln furniture |
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