CN103896605B - A kind of method of kyanite synthesis of dichroite-mullite composite - Google Patents
A kind of method of kyanite synthesis of dichroite-mullite composite Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 46
- 239000010443 kyanite Substances 0.000 title claims abstract description 34
- 229910052850 kyanite Inorganic materials 0.000 title claims abstract description 34
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 title description 3
- 238000003786 synthesis reaction Methods 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000454 talc Substances 0.000 claims abstract description 19
- 229910052623 talc Inorganic materials 0.000 claims abstract description 19
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 15
- 239000012153 distilled water Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims description 9
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 238000010304 firing Methods 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
本发明涉及一种用蓝晶石合成堇青石‑莫来石复合材料的方法。其技术方案是:将60~80wt%的蓝晶石和20~40wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料48~72h,机压成型;然后在100~120℃条件下干燥12~24h,在1220~1370℃条件下保温2‑6h,随炉冷却,即得堇青石‑莫来石复合材料。本发明具有成本低、烧成温度低和转化率高的特点,所合成的堇青石‑莫来石复合材料杂质相少、体积密度较大和耐压强度高。The invention relates to a method for synthesizing cordierite-mullite composite material with kyanite. Its technical scheme is: put 60~80wt% kyanite and 20~40wt% talc into a ball mill tank, ball mill for 3~5h, and pass through a 180 mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1 ︰(0.03~0.04) mix evenly, trap the material for 48~72h, press to form; then dry at 100~120℃ for 12~24h, keep warm at 1220~1370℃ for 2‑6h, and cool in the furnace to get the product Cordierite‑mullite composites. The invention has the characteristics of low cost, low firing temperature and high conversion rate, and the synthesized cordierite-mullite composite material has less impurity phase, larger volume density and high compressive strength.
Description
技术领域 technical field
本发明属于堇青石-莫来石复合材料技术领域。具体涉及一种用蓝晶石合成堇青石-莫来石复合材料的方法。 The invention belongs to the technical field of cordierite-mullite composite materials. It specifically relates to a method for synthesizing cordierite-mullite composite material with kyanite.
背景技术 Background technique
蓝晶石矿是具有多种形态的无水铝硅酸盐矿物,属高铝矿物原料。化学组成一般为Al2O3·SiO2或Al2SiO5,由于其膨胀效应可以抵消某些材料的收缩,使产品具有高温体积变化小、热稳定性好、耐抗渣和抗磨的特点,不需煅烧出料直接使用,能适应快速烧成,节约能源,被广泛应用于冶金、陶瓷、玻璃、机械、电力和化工等领域。 Kyanite ore is an anhydrous aluminosilicate mineral with various forms, which belongs to high alumina mineral raw material. The chemical composition is generally Al 2 O 3 ·SiO 2 or Al 2 SiO 5 , because its expansion effect can offset the shrinkage of some materials, so that the product has the characteristics of small volume change at high temperature, good thermal stability, slag resistance and wear resistance It can be used directly without calcination, can adapt to rapid sintering, saves energy, and is widely used in metallurgy, ceramics, glass, machinery, electric power and chemical industries.
作为二十一世纪高温领域基础材料之一的堇青石-莫来石复合材料是一种重要的窑具材料,具有高温性能好、高温机械强度高、抗热震性好、荷重软化温度高、使用温度高和化学稳定性好的优点,被广泛用于烧成软磁(铁氧体)和电子绝缘陶瓷的窑具、高温陶瓷辊棒、匣钵材料、推板材料、棚板材料和耐火砖材料等,被认为是当今最有发展前途的高温抗热震陶瓷材料之一,得到广泛关注。 As one of the basic materials in the high-temperature field in the 21st century, the cordierite-mullite composite material is an important kiln furniture material, which has good high-temperature performance, high-temperature mechanical strength, good thermal shock resistance, and high softening temperature under load. With the advantages of high service temperature and good chemical stability, it is widely used in kiln furniture for firing soft magnetic (ferrite) and electronic insulating ceramics, high-temperature ceramic rollers, sagger materials, push plate materials, shed board materials and refractory materials. Brick materials, etc., are considered to be one of the most promising high-temperature and thermal-shock-resistant ceramic materials today, and have received widespread attention.
目前,一般采用天然原料或纯氧化物固相烧结合成堇青石-莫来石复合材料。雷中兴(雷中兴,原位莫来石-堇青石复合物的物理机械性能、耐火性能和显微结构[J],2007,32(3):34~37)以高岭石、滑石、氧化铝合成堇青石-莫来石复合材料,烧成温度为1400℃,体积密度为1.9g/m3左右,耐压强度最高为111MPa;马林(马林,吕戌生,薛娜等.堇青石-莫来石复相陶瓷制备[J],2008,40(6):756~758)等以滑石、苏州土、工业氧化铝为原料在1390℃下合成堇青石-莫来石复相陶瓷材料,样品最大耐压强度为278MPa,体积密度为2.13g/m3。 At present, cordierite-mullite composites are generally synthesized by solid-phase sintering of natural raw materials or pure oxides. Lei Zhongxing (Lei Zhongxing, Physical and mechanical properties, refractory properties and microstructure of in-situ mullite-cordierite composites[J], 2007,32(3):34~37) using kaolinite, talc, oxidation The aluminum-synthesized cordierite-mullite composite material has a firing temperature of 1400°C, a bulk density of about 1.9g/m 3 , and a maximum compressive strength of 111MPa; Marin (Ma Lin, Lu Xusheng, Xue Na, etc. cordierite- Preparation of mullite composite ceramics [J], 2008, 40(6):756~758), etc., using talc, Suzhou soil, and industrial alumina as raw materials to synthesize cordierite-mullite composite ceramic materials at 1390 ° C, The maximum compressive strength of the sample is 278MPa, and the bulk density is 2.13g/m 3 .
上述技术中,采用天然原料或纯氧化物固相烧结合成堇青石-莫来石复合材料,虽有其优点,但存在烧成温度高、原料混合不均匀和易造成资源浪费的缺点,其制品致密度不高、杂质相较多和性能未明显改善。 In the above-mentioned technologies, solid-phase sintering of natural raw materials or pure oxides is used to synthesize cordierite-mullite composite materials. Although it has its advantages, it has the disadvantages of high firing temperature, uneven mixing of raw materials, and easy waste of resources. The density is not high, the impurity phase is more and the performance has not been significantly improved.
发明内容 Contents of the invention
本发明旨在克服现有技术缺陷,目的是提供一种合成成本低、烧成温度低和转化率高的用蓝晶石合成堇青石-莫来石复合材料的方法;用该法合成的堇青石-莫来石复合材料的杂质相少、体积密度较大和耐压强度高。 The present invention aims to overcome the defects of the prior art, and the purpose is to provide a method for synthesizing cordierite-mullite composite material with kyanite with low synthesis cost, low firing temperature and high conversion rate; cordierite synthesized by this method The bluestone-mullite composite material has less impurity phase, higher bulk density and high compressive strength.
为实现上述目的,本发明所采用的技术方案是:将60~80wt%的蓝晶石和20~40wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料48~72h,机压成型;然后在100~120℃条件下干燥12~24h,在1220~1370℃条件下保温2-6h,随炉冷却,即得堇青石-莫来石复合材料。 In order to achieve the above object, the technical solution adopted in the present invention is: the kyanite of 60~80wt% and the talc of 20~40wt% are packed in the ball mill jar, ball mill 3~5h, cross 180 mesh sieves, obtain mixture; The mixture and distilled water are mixed evenly according to the mass ratio of 1: (0.03~0.04), and the material is trapped for 48~72h, and machine-pressed; then dried at 100~120°C for 12~24h, and kept at 1220~1370°C for 2 hours -6h, cooling with the furnace to obtain the cordierite-mullite composite material.
所述蓝晶石的主要化学成分是:Al2O3含量≥55wt%,SiO2含量≥35wt%,ZrO2含量≥3wt%,Fe2O3含量≤1.5wt%。 The main chemical components of the kyanite are: Al 2 O 3 content ≥ 55 wt%, SiO 2 content ≥ 35 wt%, ZrO 2 content ≥ 3 wt%, Fe 2 O 3 content ≤ 1.5 wt%.
所述滑石的主要化学成分是:MgO含量≥30wt%,SiO2含量≥60wt%,Fe2O3含量≤1wt%。 The main chemical components of the talc are: MgO content ≥ 30 wt%, SiO 2 content ≥ 60 wt%, Fe 2 O 3 content ≤ 1 wt%.
所述机压成型的成型压力为20~40Mpa。 The molding pressure of the machine pressing molding is 20-40Mpa.
采用上述技术方案,本发明具有如下积极效果: Adopt above-mentioned technical scheme, the present invention has following positive effect:
由于本发明所采用的原料为天然矿石—蓝晶石和滑石,并且二者储量充足价格低,故所得制品成本低;由于本发明所采用的原料杂质相少,所得制品的纯度高;由于本发明采用合理的烧成制度原位合成,所得制品的体积密度较大,耐压强度高。 Because the raw materials adopted in the present invention are natural ores—kyanite and talc, and both reserves are sufficient and the price is low, the cost of the products obtained is low; because the raw materials used in the present invention have few impurities, the products obtained have high purity; Using a reasonable firing system for in-situ synthesis, the resulting product has a large volume density and high compressive strength.
因此,本发明具有成本低、烧成温度低和转化率高的特点,所合成的堇青石-莫来石复合材料杂质相少、体积密度较大和耐压强度高。 Therefore, the invention has the characteristics of low cost, low firing temperature and high conversion rate, and the synthesized cordierite-mullite composite material has less impurity phase, higher bulk density and high compressive strength.
具体实施方式 detailed description
下面结合具体实施方式对本发明作进一步描述,并非对其保护范围的限制。 The present invention will be further described below in combination with specific embodiments, which are not intended to limit the protection scope thereof.
为避免重复,现将本具体实施方式所涉及的原料统一描述如下,实施例中不再赘述: In order to avoid repetition, the raw materials involved in this specific embodiment are now described in a unified manner as follows, and will not be repeated in the examples:
所述蓝晶石的主要化学成分是:Al2O3含量≥55wt%,SiO2含量≥35wt%,ZrO2含量≥3wt%,Fe2O3含量≤1.5wt%。 The main chemical components of the kyanite are: Al 2 O 3 content ≥ 55 wt%, SiO 2 content ≥ 35 wt%, ZrO 2 content ≥ 3 wt%, Fe 2 O 3 content ≤ 1.5 wt%.
所述滑石的主要化学成分是:MgO含量≥30wt%,SiO2含量≥60wt%,Fe2O3含量≤1wt%。 The main chemical components of the talc are: MgO content ≥ 30 wt%, SiO 2 content ≥ 60 wt%, Fe 2 O 3 content ≤ 1 wt%.
实施例Example 11
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将60~70wt%的蓝晶石和30~40wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料48~56h,在20~30Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1220~1270℃条件下保温4~6h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 60~70wt% kyanite and 30~40wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 48~56h, and press it under the condition of 20~30Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1220~1270℃ for 4~6h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为320~350MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 320-350 MPa.
实施例Example 22
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将60~70wt%的蓝晶石和30~40wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料48~56h,在20~30Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1270~1320℃条件下保温3~5h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 60~70wt% kyanite and 30~40wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 48~56h, and press it under the condition of 20~30Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1270~1320℃ for 3~5h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为1.9~2.1g/m3,耐压强度为420~450MPa。 The cordierite-mullite composite material synthesized in this embodiment is tested: the bulk density is 1.9-2.1 g/m 3 , and the compressive strength is 420-450 MPa.
实施例Example 33
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将60~70wt%的蓝晶石和30~40wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料48~56h,在20~30Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1320~1370℃条件下保温2~4h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 60~70wt% kyanite and 30~40wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 48~56h, and press it under the condition of 20~30Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1320~1370℃ for 2~4h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为370~400MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 370-400 MPa.
实施例Example 44
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将65~75wt%的蓝晶石和25~35wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料56~64h,在25~35Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1220~1270℃条件下保温4~6h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 65~75wt% of kyanite and 25~35wt% of talc into a ball mill jar, ball mill for 3~5h, and pass through a 180 mesh sieve to obtain a mixture; the mixture and distilled water are in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 56~64h, and press it under the condition of 25~35Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1220~1270℃ for 4~6h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为320~350MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 320-350 MPa.
实施例Example 55
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将65~75wt%的蓝晶石和25~35wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料56~64h,在25~35Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1270~1320℃条件下保温3~5h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 65~75wt% of kyanite and 25~35wt% of talc into a ball mill jar, ball mill for 3~5h, and pass through a 180 mesh sieve to obtain a mixture; the mixture and distilled water are in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 56~64h, and press it under the condition of 25~35Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1270~1320℃ for 3~5h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为370~400MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 370-400 MPa.
实施例Example 66
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将65~75wt%的蓝晶石和25~35wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料56~64h,在25~35Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1320~1370℃条件下保温2~4h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 65~75wt% of kyanite and 25~35wt% of talc into a ball mill jar, ball mill for 3~5h, and pass through a 180 mesh sieve to obtain a mixture; the mixture and distilled water are in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 56~64h, and press it under the condition of 25~35Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1320~1370℃ for 2~4h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为320~350MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 320-350 MPa.
实施例Example 77
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将70~80wt%的蓝晶石和20~30wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料64~72h,在30~40Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1220~1270℃条件下保温4~6h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 70~80wt% kyanite and 20~30wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 64~72h, and press it under the condition of 30~40Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1220~1270℃ for 4~6h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为320~350MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 320-350 MPa.
实施例Example 88
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将70~80wt%的蓝晶石和20~30wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料64~72h,在30~40Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1270~1320℃条件下保温3~5h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 70~80wt% kyanite and 20~30wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 64~72h, and press it under the condition of 30~40Mpa; then dry it at 100~120℃ for 12~24h, keep it at 1270~1320℃ for 3~5h, and cool it with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为350~380MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 350-380 MPa.
实施例Example 99
一种用蓝晶石合成堇青石-莫来石复合材料的方法。将70~80wt%的蓝晶石和20~30wt%的滑石装入球磨罐中,球磨3~5h,过180目筛,得到混合料;将混合料和蒸馏水按质量比为1︰(0.03~0.04)混合均匀,睏料64~72h,在30~40Mpa条件下机压成型;然后在100~120℃条件下干燥12~24h,在1320~1370℃条件下保温2~4h,随炉冷却,即得堇青石-莫来石复合材料。 A method for synthesizing cordierite-mullite composite material from kyanite. Put 70~80wt% kyanite and 20~30wt% talc into a ball mill jar, ball mill for 3~5h, and pass through a 180-mesh sieve to obtain a mixture; mix the mixture and distilled water in a mass ratio of 1: (0.03~0.04 ) mix evenly, trap the material for 64~72h, machine press molding under the condition of 30~40Mpa; then dry at 100~120℃ for 12~24h, keep warm at 1320~1370℃ for 2~4h, and cool with the furnace, that is A cordierite-mullite composite was obtained.
本实施例合成的堇青石-莫来石复合材料经检测:体积密度为2.0~2.2g/m3,耐压强度为350~380MPa。 The cordierite-mullite composite material synthesized in this example is tested: the bulk density is 2.0-2.2 g/m 3 , and the compressive strength is 350-380 MPa.
采用上述技术方案,本发明具有如下积极效果: Adopt above-mentioned technical scheme, the present invention has following positive effect:
由于本发明所采用的原料为天然矿石—蓝晶石和滑石,并且二者储量充足价格低,故所得制品成本低;由于本发明所采用的原料杂质相少,所得制品的纯度高;由于本发明采用合理的烧成制度原位合成,所得制品的体积密度为1.9~2.2g/m3,耐压强度为320~450MPa,故体积密度较大,耐压强度高。 Because the raw materials adopted in the present invention are natural ores—kyanite and talc, and both reserves are sufficient and the price is low, the cost of the products obtained is low; because the raw materials used in the present invention have few impurities, the products obtained have high purity; Using a reasonable firing system to synthesize in situ, the bulk density of the obtained product is 1.9~2.2g/m 3 , and the compressive strength is 320~450MPa, so the bulk density is high and the compressive strength is high.
因此,本发明具有成本低、烧成温度低和转化率高的特点,所合成的堇青石-莫来石复合材料杂质相少、体积密度较大和耐压强度高。 Therefore, the invention has the characteristics of low cost, low firing temperature and high conversion rate, and the synthesized cordierite-mullite composite material has less impurity phase, higher bulk density and high compressive strength.
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