WO2012119332A1 - 特种耐火耐酸砖及其制备方法 - Google Patents

特种耐火耐酸砖及其制备方法 Download PDF

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WO2012119332A1
WO2012119332A1 PCT/CN2011/072557 CN2011072557W WO2012119332A1 WO 2012119332 A1 WO2012119332 A1 WO 2012119332A1 CN 2011072557 W CN2011072557 W CN 2011072557W WO 2012119332 A1 WO2012119332 A1 WO 2012119332A1
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acid
resistant
brick
special
mullite
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PCT/CN2011/072557
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French (fr)
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赵永安
校松波
刘解华
郝凌君
李明欢
张晓磊
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巩义市五耐科技开发有限公司
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    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64Burning or sintering processes
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    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/185Mullite 3Al2O3-2SiO2
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    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427Silicates other than clay, e.g. water glass
    • C04B2235/3463Alumino-silicates other than clay, e.g. mullite
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Definitions

  • the invention relates to the field of refractory materials, in particular to a special refractory acid-resistant brick and a preparation method thereof.
  • Refractory acid-resistant bricks are mainly used in acid regenerating roasters.
  • a large number of fire-resistant acid-resistant bricks, electroplating chambers, towers, pools, tanks, Anti-corrosion engineering such as tanks also requires strong refractory and acid-resistant properties of building materials.
  • higher requirements have been placed on the performance of refractory acid-resistant bricks.
  • conventional refractory acid-resistant bricks are prepared by using quartz, feldspar, clay, etc. as the main raw materials, but their normal temperature compressive strength and thermal shock stability can not meet the requirements of relatively advanced acid regenerative roasters for refractory acid-resistant bricks. Performance requirements.
  • Mullite and quartz are also used as raw materials.
  • Mullite has high refractory and acid corrosion resistance, which can greatly improve the quality of refractory acid-resistant bricks, but mainly due to mullite mines. Distributed in the Czech Republic, Austria, Brazil, the United States and other countries, and mining is difficult, so the main domestic imports, the price of mullite is also relatively expensive.
  • fire-resistant acid-resistant bricks are generally prepared according to the following processes, and are prepared by using bauxite, coke gemstone, pyrophyllite, mullite, quartz, kyanite, white corundum, clay, silica micropowder, potassium feldspar, etc.
  • the present invention provides a special fire-resistant acid-resistant brick and a preparation method thereof, according to the present invention.
  • the refractory acid-resistant brick prepared by the technical scheme has the advantages of high bulk density, low porosity, high compressive strength and strong wear resistance.
  • the present invention provides a special refractory acid-resistant brick, expressed by weight percentage, containing mullite in the raw material. 20 ⁇ 80%, ⁇ -Al2O3 3 ⁇ 20%, sillimanite composite 3 ⁇ 5%, plus binder 3 ⁇ 5%
  • the binder is an organic binder and may be a sulfite pulp waste liquid or a dextrin.
  • the raw material ratio of the special refractory acid-resistant brick may be: mullite 20-70%, ⁇ -Al2O3 8 ⁇ 16%, sillimanite composite 3 ⁇ 17%, plus 3 ⁇ 5% binder.
  • the raw material ratio of the special refractory acid-resistant bricks may be: 20 to 50% of mullite, 13 to 20% of ⁇ -Al 2 O 3 , 6 to 14% of sillimanite composite, and 3 ⁇ binder. 5%.
  • the ratio of raw materials of the special refractory acid-resistant bricks may be: mullite 35-70% , ⁇ -Al 2 O 3 5 ⁇ 13%, sillimanite composite 3 ⁇ 16%, plus binder 3 ⁇ 5%.
  • the mullite is fused mullite or sintered mullite.
  • the mullite has a particle size of 3 to 1 mm, 1 to 0.1 mm, and -200 to -320 mesh; and the ⁇ -Al 2 O 3 has a particle size of -200 to -325 mesh.
  • the sillimanite composite has a particle size of -80 to -200 mesh.
  • the added sillimanite composite is heated to 1300 At °C, it will be converted into mullite, which increases the content of mullite in refractory acid-resistant bricks and enhances the fire resistance of refractory acid-resistant bricks.
  • andalusite can form a good mullite network during the conversion process.
  • the refractory and acid-resistant brick product prepared according to the technical scheme of the invention has the characteristics of high bulk density, low porosity, high compressive strength, strong wear resistance and strong acid corrosion resistance.
  • the performance indexes of the refractory and acid-resistant brick prepared by the invention are shown in Table 1.
  • the invention also provides a preparation method of special fire-resistant acid-proof brick, comprising:
  • Step 102 according to the weight percentage content of mullite 20-80%, ⁇ -Al 2 O 3 3 ⁇ 20%, sillimanite composite 3 ⁇ 5%, and external binder 3 ⁇ 5% raw material ratio Ingredients
  • Step 104 mixing the configured material and the bonding agent in a wheel mill
  • Step 106 placing the mixed material to make a trap
  • Step 108 forming the material into a brick blank
  • Step 110 drying the brick
  • Step 112 firing and heating the brick
  • Step 114 Cool the fired brick to obtain a special fire-resistant acid-resistant brick.
  • the mixing time is 10-20 In minutes
  • the amount of the binder added is from 3 to 5% of the total amount of the raw materials.
  • the step 106 In the process of trapping the material, the mixed materials are placed, and the various raw material components in the mixed material are thoroughly mixed, wherein the time for trapping the materials is 12 to 24 hours.
  • the material is formed into a brick by a press, wherein the forming pressure of the press is 315-1000 tons, and the bulk density of the forming brick is 2.65-2.75 g/cm 3 .
  • the drying temperature of the brick is 60 ° C ⁇ 150 ° C, and the drying time is 12-24. Hours.
  • the temperature at which the brick is fired is 1480 °C. ⁇ 1550 ° C, holding time is 8 ⁇ 12 hours.
  • the binding agent is dextrin.
  • the invention can significantly improve the bulk density, compressive strength, wear resistance, acid corrosion resistance, etc. of the fire-resistant acid-resistant brick, reduce the porosity of the fire-resistant acid-resistant brick, and make the fire-resistant acid-resistant brick can be applied in a more demanding place, and expand the fire-resistant acid-resistant brick. Application area.
  • Fig. 1 is a flow chart showing the preparation of a special refractory acid-resistant brick according to an embodiment of the present invention.
  • the technical properties of the raw materials selected for the special refractory and acid-resistant bricks of the invention are: mullite particle size 3 ⁇ 1mm, 1 ⁇ 0.1mm, -200 ⁇ -320 mesh; ⁇ -Al 2 O 3 particle size is -200 ⁇ -325
  • the sillimanite composite has a particle size of -80 ⁇ -280 mesh.
  • Embodiment 1 A special fire-resistant acid-resistant brick and a preparation method thereof.
  • binder 20 to 80% of mullite, 3 to 20% of ⁇ -Al 2 O 3 , 3 to 5% of sillimanite composite, and 3 to 5% of binder, wherein the binder is an organic binder, which can be Sulfite pulp waste or dextrin.
  • Fig. 1 is a flow chart showing the preparation of a special refractory acid-resistant brick according to an embodiment of the present invention.
  • the ingredients will be mixed.
  • the configured material and binder sulfite pulp waste liquid, specific gravity 1.25 g/cm 3
  • the mixing time is 20 minutes
  • the sulfite pulp waste liquid is added to the raw material.
  • 4% of the total amount after mixing for 24 hours, after the material is trapped, the material is formed into a brick by a press.
  • the forming pressure of the press is 400 tons
  • the bulk density of the formed brick is 2.70 to 2.75 g/cm 3 .
  • the drying temperature is 110 ° C
  • the drying time is 16 hours
  • the baking temperature is 1500 ° C
  • the holding time is 12 hours
  • the natural cooling method is used for cooling, and finally the product is obtained.
  • Special fire resistant acid brick After molding, it is dried, the drying temperature is 110 ° C, the drying time is 16 hours, and after drying, it is fired, the baking temperature is 1500 ° C, the holding time is 12 hours, and after the completion of the firing, the natural cooling method is used for cooling, and finally the product is obtained. Special fire resistant acid brick.
  • Embodiment 2 Basically the same as Embodiment 1, the difference is:
  • the preparation method of the special refractory acid-resistant brick is basically the same as that of the first embodiment, and the difference is that the mixing time is 15 Minutes, the sulfite pulp waste liquid is added in 3% of the total amount of raw materials, the trapping time is 22 hours, the press molding pressure is 370 tons, the drying temperature is 120 ° C, and the drying time is 14 In hours, the firing temperature is 1550 ° C and the holding time is 10 hours.
  • Embodiment 3 Basically the same as Embodiment 1, the difference is:
  • the preparation method of the special refractory acid-resistant brick is basically the same as that of the first embodiment, and the difference is that the mixing time is 10 Minutes, the sulfite pulp waste liquid is added in 5% of the total amount of raw materials, the trapping time is 26 hours, the press molding pressure is 350 tons, the drying temperature is 150 ° C, and the drying time is 11 In hours, the firing temperature was 1500 ° C and the holding time was 11 hours.
  • Embodiment 4 Basically the same as Embodiment 1, the difference is:
  • the preparation method of the special refractory acid-resistant brick is basically the same as that of the first embodiment, and the difference is that the mixing time is 15 Minutes, sulfite pulp waste liquid is added in 3.5% of the total amount of raw materials, the trapping time is 23 hours, the forming pressure of the press is 330 tons, the drying temperature is 130 ° C, and the drying time is 20 In hours, the firing temperature was 1480 ° C and the holding time was 12 hours.
  • the refractory and acid-resistant brick product prepared according to the technical scheme of the invention has the characteristics of high bulk density, low porosity, high compressive strength, strong wear resistance, strong acid corrosion resistance, and the high temperature index softening temperature of the product of the invention and Refractoriness due to conventional acid-resistant bricks.
  • the performance indexes of the refractory and acid-resistant brick prepared by the invention are shown in Table 1.

Description

特种耐火耐酸砖及其制备方法 技术领域
本发明涉及耐火材料领域,特别是涉及一种特种耐火耐酸砖及其制备方法。
背景技术
耐火耐酸砖主要应用在酸再生焙烧炉上,另外,在石油、化工、冶金、电力、化纤、造纸、制药、化肥等生产场所要大量用到耐火耐酸砖,电镀室以及塔、池、罐、槽等防腐工程也需要建筑材料具备很强的耐火耐酸性能。随着产业的发展,对耐火耐酸砖的性能也提出了更高的要求。目前,常规的耐火耐酸砖是以石英、长石、粘土等为主要原料制备而成,但其常温耐压强度和热震稳定性不能很好的满足比较先进的酸再生焙烧炉对耐火耐酸砖性能的要求。
在高级耐火耐酸砖的生产中,也采用莫来石、石英为原料,莫来石具有较高的耐火、耐酸腐蚀性能,可以极大的提高耐火耐酸砖的品质,但由于莫来石矿主要分布在捷克、奥地利、巴西、美国等国,且开采难度大,所以国内主要采用进口,莫来石的价格也比较昂贵。
相关技术中,通常按照如下工艺制作耐火耐酸砖,以特级矾土、焦宝石、叶腊石、莫来石、石英、蓝晶石、白刚玉、粘土、二氧化硅微粉、钾长石等位原料制备而成的一种体积密度较高、耐火度较好的耐火耐酸砖;但这种耐火耐酸砖的体积密度为2.26 g / cm3 、气孔率为16%,体积密度较低,气孔率较高,影响其耐火耐酸性能 。
技术问题
为了解决上述相关技术中耐火耐酸砖体积密度较低、显气孔率较高、耐火耐酸性不强的问题至少之一,本发明提供了一种特种耐火耐酸砖及其制备方法,根据本发明提供的技术方案制备的耐火耐酸砖具有较高的体积密度、低气孔率、高耐压强度、耐磨性强等优点。
技术解决方案
为了解决上述问题至少之一,本发明提供了一种特种耐火耐酸砖,以重量百分含量表示,原料中含有莫来石 20~80% , α-Al2O3 3~20% ,硅线石红柱石复合料 3~5%, 外加结合剂 3~5% ,其中,结合剂属于有机结合剂,可以是亚硫酸纸浆废液或糊精。
根据上述技术方案,优选地,特种耐火耐酸砖的原料配比可以是:莫来石 20~70%, α-Al2O3 8~16%, 硅线石红柱石复合料 3~17% ,外加结合剂 3~5% 。
优选地,特种耐火耐酸砖的原料配比可以是:莫来石 20~50% , α- Al2O3 13~20% ,硅线石红柱石复合料 6~14% ,外加结合剂 3~5% 。
优选地,特种耐火耐酸砖的原料配比还可以是:莫来石 35~70% α-Al2O3 5~13% ,硅线石红柱石复合料 3~16% ,外加结合剂 3~5% 。
在上述技术方案中,优选地,所述莫来石为电熔莫来石或者烧结莫来石。
在上述技术方案中,优选地,所述莫来石的粒度为 3~1mm 、 1~0.1mm 、 -200~-320 目;所述 α-Al2O3 的粒度为 -200~-325 目;所述硅线石红柱石复合料的粒度为 -80~-200 目。
在上述技术方案中,所加入的硅线石红柱石复合料,在加热到 1300 ℃时会转变为莫来石,增大了莫来石在耐火耐酸砖中的含量,增强了耐火耐酸砖的耐火强度,其中,红柱石在转化过程中,可以形成良好的莫来石网络,具有更强的耐火性能,耐火度达 1800 ℃以上,机械强度大,抗热冲击性强,荷重转化点高,并且具有极强的抗化学腐蚀性。
根据本发明技术方案制备的耐火耐酸砖产品具有较高的体积密度、低气孔率、高耐压强度、耐磨性强、耐酸侵蚀性强等特点。本发明制备的耐火耐酸砖的性能指标见表一。
本发明还提供了一种特种耐火耐酸砖的制备方法,包括:
步骤 102 ,按照重量百分比含量莫来石 20~80% 、α -Al2O3 3~20% 、硅线石红柱石复合料 3~5% 、外加结合剂 3~5% 的原料配比进行配料;
步骤 104 ,将配置好的物料和结合剂在轮碾机中混碾;
步骤 106 ,将混碾后的物料放置起来,进行困料;
步骤 108 ,将物料成型为砖坯;
步骤 110 ,对砖坯进行干燥;
步骤 112 ,将砖坯进行烧成、保温;
步骤 114 ,把烧成的砖进行冷却,得到特种耐火耐酸砖。
在上述技术方案中,优选地,所述步骤 104 中,混碾时间为 10~20 分钟,所述结合剂的加入量占原料总量的 3~5% 。
优选地,所述步骤 106 中,所述困料过程为:将混碾后的物料放置起来,使混碾后的物料中的各种原料组分充分混合,其中,困料的时间为 12~24 小时。
优选地,所述步骤 108 中,采用压力机将物料成型为砖坯,其中压力机的成型压力为 315~1000 吨,成型砖坯的体积密度为 2.65-2.75 g/ cm3
优选地,所述步骤 110 中,对砖坯进行干燥的温度为 60 ℃ ~150℃,干燥时间为12~24 小时。
优选地,所述步骤 112 中,对砖坯进行烧成的温度为 1480 ℃ ~1550℃,保温时间为8~12 小时。
在上述技术方案中,优选地,所述结合剂为糊精。
有益效果
本发明可以显著提高耐火耐酸砖的体积密度、耐压强度、耐磨性、耐酸腐蚀性等,降低耐火耐酸砖的气孔率,使得耐火耐酸砖可以应用在条件更加苛刻的场所,扩展耐火耐酸砖的应用领域。
附图说明
图 1 是根据本发明的一个实施例的特种耐火耐酸砖的制备流程图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点,下面结合附图和具体实施方式对本发明进行进一步的详细描述。
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是,本发明还可以采用其他不同于在此描述的其他方式来实施,因此,本发明并不限于下面公开的具体实施例的限制。
本发明特种耐火耐酸砖所选用的原料的技术性能为:莫来石的粒度 3~1mm 、 1~0.1mm 、 -200~-320 目; α -Al2O3 的粒度为 -200~-325 目;硅线石红柱石复合料的粒度为 -80~-280 目。
实施例一:一种特种耐火耐酸砖及其制备方法。
特种耐火耐酸砖的原料配方:(以重量百分比计)
莫来石 20~80% , α-Al2O3 3~20% ,硅线石红柱石复合料 3~5%, 外加结合剂 3~5% ,其中,结合剂属于有机结合剂,可以是亚硫酸纸浆废液或糊精。
图 1 是本发明的一个实施例的特种耐火耐酸砖的制备流程图。
如图 1 所示,特种耐火耐酸砖的制备方法为:
按照重量百分比含量莫来石 20~80% 、α -Al2O3 3~20% 、硅线石红柱石复合料 3~5% 、外加结合剂 3~5% 的原料配比进行配料,将配置好的物料和结合剂(亚硫酸盐纸浆废液,比重为 1.25 g/ cm3 )倒入轮碾机进行混碾,混碾时间为 20 分钟,亚硫酸盐纸浆废液的加入量占原料总量的 4% ,混碾后困料 24 小时,困料后将其物料采用压力机成型为砖坯,压力机的成型压力为 400 吨,成型砖坯的体积密度为 2.70 ~ 2.75 g/ cm3 ,成型后进行干燥,干燥温度为 110℃ ,干燥时间为 16 小时,干燥后进行烧成,烧成温度为 1500℃ ,保温时间 12 小时,烧成结束后采用自然降温的方法进行冷却,最后得到产品特种耐火耐酸砖。
实施例二:与实施例一基本相同,其不同之处在于:
莫来石 20~70%, α-Al2O3 8~16%, 硅线石红柱石复合料 3~17% ,外加结合剂 3~5% 。
特种耐火耐酸砖的制备方法与实施例一基本相同,其不同之处在于,混碾时间为 15 分钟,亚硫酸盐纸浆废液的加入量占原料总量的 3% ,困料时间为 22 小时,压力机的成型压力为 370 吨,干燥温度为 120℃ ,干燥时间为 14 小时,烧成温度为 1550℃ ,保温时间 10 小时。
实施例三:与实施例一基本相同,其不同之处在于:
莫来石 20~50% , α- Al2O3 13~20% ,硅线石红柱石复合料 6~14% ,外加结合剂 3~5% 。
特种耐火耐酸砖的制备方法与实施例一基本相同,其不同之处在于,混碾时间为 10 分钟,亚硫酸盐纸浆废液的加入量占原料总量的 5% ,困料时间为 26 小时,压力机的成型压力为 350 吨,干燥温度为 150℃ ,干燥时间为 11 小时,烧成温度为 1500℃ ,保温时间 11 小时。
实施例四:与实施例一基本相同,其不同之处在于:
莫来石 35~70% α-Al2O3 5~13% ,硅线石红柱石复合料 3~16% ,外加结合剂 3~5% 。
特种耐火耐酸砖的制备方法与实施例一基本相同,其不同之处在于,混碾时间为 15 分钟,亚硫酸盐纸浆废液的加入量占原料总量的 3.5% ,困料时间为 23 小时,压力机的成型压力为 330 吨,干燥温度为 130℃ ,干燥时间为 20 小时,烧成温度为 1480℃ ,保温时间 12 小时。
本领域的技术人员应该理解,以上四个实施例中的加工时间、施工压力、操作温度等仅为说明本发明的技术方案,并不仅限于这几个实施例的数值,以上实施例的原料配比和制备方法的重新组合,都应在本发明的保护范围之内。
根据本发明技术方案制备的耐火耐酸砖产品具有较高的体积密度、低气孔率、高耐压强度、耐磨性强、耐酸侵蚀性强等特点,并且本发明产品的高温指标荷重软化温度和耐火度由于常规耐酸砖。本发明制备的耐火耐酸砖的性能指标见表一。
表一
牌号
指标
1# 2#
体积密度 g/cm3 2.55 2.5
气孔 % 4.5 6.5
耐压 MPa 100 85
荷软 ℃ 1550 1470
吸水率 % 1.5 2.2
Al2O3 % 65 63
SiO2% 33 35
Fe2O3% 0.5 0.5
TiO2% 0.9 0.9
K2O+Na2O% 0.3 0.5
耐火度 ℃ 1790 1790
耐酸度 % 99.8 99.8
莫来石相 % 90 以上 80 ~ 90
耐磨性 ≤ 5 ≤ 6
热震 1100 8 5
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (15)

  1. 一种特种耐火耐酸砖 ,其特征在于,以重量百分比含量表示:以重量百分含量表示,所述特种耐火耐酸原料中含有莫来石 20~80% , α-Al2O3 3~20%,
    硅线石红柱石复合料 3~5%, 外加结合剂 3~5% 。
  2. 根据权利要求1所述的特种耐火耐酸砖,其特征在于,所述特种耐火耐酸砖原料中含有莫来石20~70%, α- Al2O3 8~16%, 硅线石红柱石复合料3~17%,外加结合剂3~5%。
  3. 根据权利要求1所述的特种耐火耐酸砖,其特征在于,所述特种耐火耐酸砖原料中含有莫来石20~50%,α- Al2O3 13~20%,硅线石红柱石复合料6~14%,外加结合剂3~5%。
  4. 根据权利要求1所述的特种耐火耐酸砖,其特征在于,所述特种耐火耐酸砖原料中含有莫来石35~70%,α- Al2O3 5~13%,硅线石红柱石复合料3~16%,外加结合剂3~5%。
  5. 根据权利要求1至4中任一项所述的特种耐火耐酸砖,其特征在于,所述莫来石为电熔莫来石或烧结莫来石。
  6. 根据权利要求1至4中任一项所述的特种耐火耐酸砖,其特征在于,所述添加剂具有助烧结作用;所述结合剂属于有机结合剂,所述结合剂包括:亚硫酸纸浆废液或糊精。
  7. 根据权利要求1至4中任一项所述的特种耐火耐酸砖,其特征在于:所述莫来石的粒度为3mm~1mm、1mm~0.1mm、-200目~-320目;所述α- Al2O3 的粒度为-200目~-325目;所述硅线石红柱石复合料的粒度为-80目~-280目。
  8. 根据权利要求1至4中任一项所述的特种耐火耐酸砖,其特征在于,所述硅线石红柱石复合料由硅线石和红柱石颗粒复合而成。
  9. 一种特种耐火耐酸砖的制备方法,其特征在于,包括以下步骤:
    步骤102,按照重量百分比含量莫来石20~80%、α- Al2O3 3~20%、硅线石红柱石复合料3~5%、外加结合剂3~5%的原料配行配料;
    步骤104,将配置好的物料和结合剂在轮碾机中混碾;
    步骤106,将混碾后的物料放置起来,进行困料;
    步骤108,将物料成型为砖坯;
    步骤110,对砖坯进行干燥;
    步骤112,将砖坯进行烧成、保温;
    步骤114,把烧成的砖进行冷却,得到特种耐火耐酸砖。
  10. 根据权利要求9所述的特种耐火耐酸砖的制备方法,其特征在于,所述步骤104中,混碾时间为10~20分钟,所述结合剂的加入量占原料总量的3~5%。
  11. 根据权利要求9所述的特种耐火耐酸砖的制备方法,其特征在于,所述步骤106中,所述困料过程为:将混碾后的物料放置起来,使混碾后的物料中的各种原料组分充分混合,其中,困料的时间为12~24小时。
  12. 根据权利要求9至11中任一项所述的特种耐火耐酸砖的制备方法,其特征在于,所述步骤108中,采用压力机将物料成型为砖坯,其中压力机的成型压力为315~1000吨,成型砖坯的体积密度为2.65-2.75 g/ cm3
  13. 根据权利要求9至11中任一项所述的特种耐火耐酸砖的制备方法,其特征在于,所述步骤110中,对砖坯进行干燥的温度为60℃~150℃,干燥时间为12~24小时。
  14. 根据权利要求9至11中任一项所述的特种耐火耐酸砖的制备方法,其特征在于,所述步骤112中,对砖坯进行烧成的温度为1480℃~1550℃,保温时间为8~12小时。
  15. 根据权利要求9至11中任一项所述的特种耐火耐酸砖的制备方法,其特征在于,所述结合剂为糊精。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1792949A (zh) * 2005-12-23 2006-06-28 郑州豫兴耐火材料有限公司 泥浆结合的抗热震耐火砖及其生产方法
CN101633579A (zh) * 2009-08-21 2010-01-27 巩义市五耐科技开发有限公司 特种耐火耐酸砖及其制备方法
CN101747066A (zh) * 2008-12-13 2010-06-23 新密市中原特种耐火材料有限公司 一种唇砖及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3149485A1 (de) * 1981-12-14 1983-06-30 Dr. C. Otto & Comp. Gmbh, 4630 Bochum Verfahren zur herstellung von ungebrannten feuerfesten steinen
CN1319895C (zh) * 2005-12-23 2007-06-06 郑州豫兴耐火材料有限公司 泥浆结合成型的抗热震耐火砖及其生产方法
CN100337978C (zh) * 2006-01-16 2007-09-19 宜兴市宝欣耐火材料有限公司 高热震性莫来石-堇青石耐火组合物
CN101157561B (zh) * 2007-09-05 2011-08-31 江苏国窑科技有限公司 耐磨耐火可塑料
CN101343190B (zh) * 2008-08-26 2011-07-20 巩义市第五耐火材料总厂 大型高炉热风炉用硅线石砖及其生产方法
CN101445379B (zh) * 2008-12-19 2011-08-24 周建国 水泥窑窑口、喷煤管专用浇注料及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1792949A (zh) * 2005-12-23 2006-06-28 郑州豫兴耐火材料有限公司 泥浆结合的抗热震耐火砖及其生产方法
CN101747066A (zh) * 2008-12-13 2010-06-23 新密市中原特种耐火材料有限公司 一种唇砖及其制备方法
CN101633579A (zh) * 2009-08-21 2010-01-27 巩义市五耐科技开发有限公司 特种耐火耐酸砖及其制备方法

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