CN105523769A - 一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 - Google Patents
一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 Download PDFInfo
- Publication number
- CN105523769A CN105523769A CN201610021949.9A CN201610021949A CN105523769A CN 105523769 A CN105523769 A CN 105523769A CN 201610021949 A CN201610021949 A CN 201610021949A CN 105523769 A CN105523769 A CN 105523769A
- Authority
- CN
- China
- Prior art keywords
- magnesia
- hercynite
- brick
- rotary kiln
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011449 brick Substances 0.000 title claims abstract description 57
- 229910001691 hercynite Inorganic materials 0.000 title claims abstract description 45
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000001095 magnesium carbonate Substances 0.000 claims description 21
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 21
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 21
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 21
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- -1 iron aluminate Chemical class 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- 239000003265 pulping liquor Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 241001504664 Crossocheilus latius Species 0.000 claims description 4
- 201000001883 cholelithiasis Diseases 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 description 12
- 239000011819 refractory material Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped 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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped 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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/061—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances by melting out
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/76—Crystal structural characteristics, e.g. symmetry
- C04B2235/762—Cubic symmetry, e.g. beta-SiC
- C04B2235/763—Spinel structure AB2O4
Abstract
本发明公开了一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，降低窑体外部温度，达到节能减排的效果。该镁铁铝尖晶石砖的组份为：3-1mm高纯镁砂或电熔镁砂；1-0mm高纯镁砂或电熔镁砂；小于0.088mm高纯镁砂或电熔镁砂；2-0mm电熔铁铝尖晶石或烧结铁铝尖晶石；化学纤维；纸浆废液4～5％；该方法的步骤包括：配料；混碾；压制成坯体；干燥；高温烧结。本发明使镁铁铝砖内部结构中的相应位置残留下均匀的纤维状微孔，增加了砖结构中气-固界面，增大了固相导热的声子散射，有效降低了砖的导热率，减少了窑内热量的散失。
Description
技术领域
本发明涉及耐火材料及其生产方法，特别是一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法。
背景技术
水泥回转窑烧成带用的镁铬砖在使用和废弃砖存放过程产生的六价铬对环境造成了严重危害，开发水泥回转窑烧成带用无铬化耐火材料已经成为耐火材料领域研究的重点。目前所开发的无铬产品主要有：镁尖晶石砖、白云石砖、镁锆砖和镁铁铝尖晶石等。通过长期对上述几种产品研究与使用发现，镁铁铝尖晶石砖高温性能优异,同时具有较好的挂窑皮性能及抗碱侵蚀能力，是取代镁铬砖用于水泥回转窑烧成带性价比最好的耐火材料。
在使用过程中发现，镁铁铝尖晶石砖存在导热率较高的缺点。一方面水泥回转窑窑衬耐火材料较高的导热率致使窑体外部温度升高，导致窑体钢结构在运转过程易发生变形，严重者会造成停窑停产事故；另一方面窑衬耐火材料导热率高会使窑内热量大量散失，造成能源的浪费。针对镁铁铝尖晶石砖存在的导热率高的问题，研究人员将降低材料的导热率的重点都集中在材质的优化上，例如通过复合砖的生产工艺制备整体较低导热率的铁铝尖晶石砖，这种方法生产成本高、成品率低、由于连接处容易发生断裂，使用寿命短，同时降低窑皮温度效果并不明显。
发明内容
本发明提供了一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，降低窑体外部温度，达到节能减排的效果。
一种水泥回转窑用低导热率镁铁铝尖晶石砖，该镁铁铝尖晶石砖的重量百分比组份如下：
其中：高纯镁砂：MgO≥96.5％，SiO2＜1.0％，颗粒体积密度≥3.27g/cm3；电熔镁砂：MgO≥97.0％，SiO2＜0.5％，颗粒体积密度≥3.50g/cm3；电熔铁铝尖晶石：Al2O360-62％，Fe2O338-40％，SiO2＜0.5％；烧结铁铝尖晶石：Al2O359-62％，Fe2O338-41％，SiO2＜0.5％；化学纤维：聚丙稀≥99.9％，软化点180-190℃；亚硫酸纸浆废液：比重1.18-1.20。
一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，该方法包括以下步骤：
a.按一种水泥回转窑用低导热率镁铁铝尖晶石砖的重量百分比组份配料：
按以上配比，称取3-1mm、1-0mm的高纯镁砂或电熔镁砂，2-0mm铁铝尖晶石或烧结铁铝尖晶石，化学纤维，于混砂机中干混碾2～3分钟，化学纤维分散均匀后，加入纸浆废液，混碾1～5分钟，然后再加入小于0.088mm的高纯镁砂或电熔镁砂，混碾5～8分钟；
b.将混合好的物料加入到模具中，在630吨～1000吨摩擦压砖机或者2000吨液压机上压制成坯体，成型压力控制在在200-250Mpa；
c.将坯体送入隧道式干燥窑进行干燥，干燥窑热风入口温度40～60℃，保温区间温度110℃，出口温度40～60℃，热处理12～16小时；
d.将干燥后的坯体送入隧道窑中进行高温烧结，烧结温度为1500℃-1580℃，保温时间在5～8小时。
本发明显著地有益效果体现在：
1.化学纤维在200℃～800℃温度范围内熔融、完全燃烧，使镁铁铝砖内部结构中的相应位置残留下均匀的纤维状微孔，增加了砖结构中气-固界面，增大了固相导热的声子散射，有效降低了砖的导热率，减少了窑内热量的散失。
2.解决了由于镁铁铝尖晶石砖使用过程中导热率高造成的窑体外部温度过高而引起的钢结构变形的问题，提高了回转窑的运转效率，降低窑的检修成本，延长回转窑的运转寿命。
3.本发明简单易行，不改变现有镁铁铝尖晶石砖的生产工艺，不增加生产成本。
4.提高了材料的抵抗热冲击能力，本发明可以应用于其他定型致密耐火材料降低导热率。
具体实施方式
下面通过实施例更详细描述本发明。
实施例1
一种水泥回转窑用低导热率镁铁铝尖晶石砖，该镁铁铝尖晶石砖的重量百分比组份如下：
其中：高纯镁砂：MgO≥96.5％，SiO2＜1.0％，颗粒体积密度≥3.27g/cm3；烧结铁铝尖晶石：Al2O359-62％，Fe2O338-41％，SiO2＜0.5％；化学纤维：聚丙稀≥99.9％，软化点180-190℃；纸浆废液：比重1.18-1.20。
一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，该方法的步骤如下：
a.按一种水泥回转窑用低导热率镁铁铝尖晶石砖的重量百分比组份配料：
按以上配比，称取3-1mm、1-0mm的高纯镁砂，2-0mm烧结铁铝尖晶石，化学纤维，于混砂机中干混碾2分钟，化学纤维分散均匀后，加入纸浆废液，混碾2分钟，然后再加入小于0.088mm的电熔镁砂，混碾5分钟；
b.将混合好的物料加入到模具中，在500吨～800吨摩擦压砖机上压制成坯体，成型压力控制在在200Mpa；
c.将坯体送入隧道式干燥窑进行干燥，干燥窑热风入口温度40～60℃，保温区间温度110℃，出口温度40～60℃，热处理12～16小时；
d.将干燥后的坯体送入隧道窑中进行高温烧结，烧结温度为1500℃，保温时间5小时；
实施例2
一种水泥回转窑用低导热率镁铁铝尖晶石砖，该镁铁铝尖晶石砖的重量百分比组份如下：
其中：高纯镁砂：MgO≥96.5％，SiO2＜1.0％，颗粒体积密度≥3.27g/cm3；电熔镁砂：MgO≥97.0％，SiO2＜0.5％，颗粒体积密度≥3.50g/cm3；电熔铁铝尖晶石：Al2O360-62％，Fe2O338-40％，SiO2＜0.5％；烧结铁铝尖晶石：Al2O359-62％，Fe2O338-41％，SiO2＜0.5％；化学纤维：聚丙稀≥99.9％，软化点180-190℃；纸浆废液：比重1.18-1.20。
一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，该方法的步骤如下：
a.按一种水泥回转窑用低导热率镁铁铝尖晶石砖的重量百分比组份配料：
按上述配比，称取3-1mm、1-0mm的两种镁砂及2-0mm两种铁铝尖晶石和化学纤维，于混砂机中预混碾2.5分钟，使化学纤维分散均匀后，加入设计的纸浆废液，混碾4分钟，然后再加入小于0.088mm高纯镁砂，混碾6.5分钟；
b.将混合好的物料加入到模具中，在500吨～800吨摩擦压砖机或者液压机上加压制成坯体，成型压力在225Mpa；
c.将坯体送入隧道式干燥窑进行干燥，干燥窑热风入口温度40～60℃，保温区间温度110℃，出口温度40～60℃，干燥时间12小时。
d.将干燥后的坯体送入隧道窑中进行高温烧结，烧结温度为1550℃，保温时间6小时。
实施例3
一种水泥回转窑用低导热率镁铁铝尖晶石砖，该镁铁铝尖晶石砖的重量百分比组份如下：
其中：电熔镁砂：MgO≥97.0％，SiO2＜0.5％，颗粒体积密度≥3.50g/cm3；电熔铁铝尖晶石：Al2O360-62％，Fe2O338-40％，SiO2＜0.5％；化学纤维：聚丙稀≥99.9％，软化点180-190℃；纸浆废液：比重1.18-1.20。
一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，该方法的步骤如下：
a.按一种水泥回转窑用低导热率镁铁铝尖晶石砖的重量百分比组份配料：
按上述配比，称取3-1mm、1-0mm的电熔镁砂及2-0mm电熔铁铝尖晶石和化学纤维，于混砂机中干混碾3分钟，使化学纤维分散均匀后，加入设计的纸浆废液，混碾5分钟，然后再加入小于0.088mm电熔镁砂，混碾8分钟；
b.将混合好的物料加入到模具中，在500吨～800吨摩擦压砖机或者液压机上加压制成坯体，成型压力在250Mpa；
c.将坯体送入隧道式干燥窑进行干燥，干燥窑热风入口温度40～60℃，保温区间温度110℃，出口温度40～60℃，干燥时间12小时；
d.将干燥后的坯体送入隧道窑中进行高温烧结，烧结温度为1580℃，保温时间8小时。
导热性能模拟测试：按本发明中实施例1、2、3配比，分别生产三组240mm×114mm×65mm标型砖，另设置一组不加化学纤维的对照组标型砖。利用高温电炉模拟镁铁铝尖晶石砖在回转窑烧成带的单面受热方式，四组砖体工作面置于炉内，非工作面置于炉外，控制电炉内温度与水泥回转窑烧成带温度一致(1450-1550℃)，以红外测温仪测定四组砖体非工作面温度。四组砖体工作面受热一致，非工作面的温度测试结果趋势见表1。
表1本发明加入化学纤维砖体与未加化学纤维砖体导热性测试结果趋势
注：表中“T0”代表施实例3砖体非工作面测试温度，“+”代表温度升高，越多表明温度越高，反应砖体热导热性越好。
从以上实验数据说明，与未加化学纤维的镁铁铝尖晶石砖相比，本发明在镁铁铝尖晶石砖中加入化学纤维能有效降低砖体的导热率。
Claims (2)
1.一种水泥回转窑用低导热率镁铁铝尖晶石砖，其特征是该镁铁铝尖晶石砖的重量百分比组份如下：
其中：高纯镁砂：MgO≥96.5％，SiO2＜1.0％，颗粒体积密度≥3.27g/cm3；电熔镁砂：MgO≥97.0％，SiO2＜0.5％，颗粒体积密度≥3.50g/cm3；电熔铁铝尖晶石：Al2O360-62％，Fe2O338-40％，SiO2＜0.5％；烧结铁铝尖晶石：Al2O359-62％，Fe2O338-41％，SiO2＜0.5％；化学纤维：聚丙稀≥99.9％，软化点180-190℃；亚硫酸纸浆废液：比重1.18-1.20。
2.一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法，其特征是该方法包括以下步骤：
a.按一种水泥回转窑用低导热率镁铁铝尖晶石砖的重量百分比组份配料：
按以上配比，称取3-1mm、1-0mm的高纯镁砂或电熔镁砂，2-0mm铁铝尖晶石或烧结铁铝尖晶石，化学纤维，于混砂机中干混碾2～3分钟，化学纤维分散均匀后，加入纸浆废液，混碾1～5分钟，然后再加入小于0.088mm的高纯镁砂或电熔镁砂，混碾5～8分钟；
b.将混合好的物料加入到模具中，在630吨～1000吨摩擦压砖机或者2000吨液压机上压制成坯体，成型压力控制在在200-250Mpa；
c.将坯体送入隧道式干燥窑进行干燥，干燥窑热风入口温度40～60℃，保温区间温度110℃，出口温度40～60℃，热处理12～16小时；
d.将干燥后的坯体送入隧道窑中进行高温烧结，烧结温度为1500℃-1580℃，保温时间在5～8小时。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021949.9A CN105523769B (zh) | 2016-01-14 | 2016-01-14 | 一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021949.9A CN105523769B (zh) | 2016-01-14 | 2016-01-14 | 一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105523769A true CN105523769A (zh) | 2016-04-27 |
| CN105523769B CN105523769B (zh) | 2018-06-29 |
Family
ID=55766347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021949.9A Expired - Fee Related CN105523769B (zh) | 2016-01-14 | 2016-01-14 | 一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105523769B (zh) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924194A (zh) * | 2016-04-28 | 2016-09-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热镁铁铝砖及其制备方法 |
| CN107602076A (zh) * | 2017-11-08 | 2018-01-19 | 邓凌霄 | 一种以污泥为原料的保温烧结砖的制备方法 |
| CN107793166A (zh) * | 2017-12-11 | 2018-03-13 | 辽宁科技大学 | Zn挥发窑用电熔再结合铝镁铬耐火砖及其制备方法 |
| CN111995376A (zh) * | 2020-08-27 | 2020-11-27 | 安徽海螺暹罗耐火材料有限公司 | 一种用于水泥回转窑的镁铁铝尖晶石砖及其生产工艺 |
| CN113603460A (zh) * | 2021-08-27 | 2021-11-05 | 郑州瑞泰耐火科技有限公司 | 一种水泥回转窑烧成带用微气孔镁铁铝尖晶石砖及其制备方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613214A (zh) * | 2009-07-23 | 2009-12-30 | 北京通达耐火技术股份有限公司 | 一种水泥窑高温带用镁铁铝尖晶石砖及其使用方法 |
| CN101851105A (zh) * | 2010-02-03 | 2010-10-06 | 山东圣川陶瓷材料有限公司 | 镁铁铝尖晶石砖及其制备方法 |
| CN101891491A (zh) * | 2010-08-06 | 2010-11-24 | 西安建筑科技大学 | 一种氧化镁铁铝尖晶石耐火材料的制备方法 |
| CN102584318A (zh) * | 2012-03-16 | 2012-07-18 | 北京科技大学 | 一种含Cr钢渣制备多孔保温材料的方法 |
| CN105130471A (zh) * | 2015-09-09 | 2015-12-09 | 郑州瑞泰耐火科技有限公司 | 一种镁铝铁尖晶石砖及其制备方法 |
-
2016
- 2016-01-14 CN CN201610021949.9A patent/CN105523769B/zh not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613214A (zh) * | 2009-07-23 | 2009-12-30 | 北京通达耐火技术股份有限公司 | 一种水泥窑高温带用镁铁铝尖晶石砖及其使用方法 |
| CN101851105A (zh) * | 2010-02-03 | 2010-10-06 | 山东圣川陶瓷材料有限公司 | 镁铁铝尖晶石砖及其制备方法 |
| CN101891491A (zh) * | 2010-08-06 | 2010-11-24 | 西安建筑科技大学 | 一种氧化镁铁铝尖晶石耐火材料的制备方法 |
| CN102584318A (zh) * | 2012-03-16 | 2012-07-18 | 北京科技大学 | 一种含Cr钢渣制备多孔保温材料的方法 |
| CN105130471A (zh) * | 2015-09-09 | 2015-12-09 | 郑州瑞泰耐火科技有限公司 | 一种镁铝铁尖晶石砖及其制备方法 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924194A (zh) * | 2016-04-28 | 2016-09-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热镁铁铝砖及其制备方法 |
| CN105924194B (zh) * | 2016-04-28 | 2018-09-04 | 郑州瑞泰耐火科技有限公司 | 一种低导热镁铁铝砖及其制备方法 |
| CN107602076A (zh) * | 2017-11-08 | 2018-01-19 | 邓凌霄 | 一种以污泥为原料的保温烧结砖的制备方法 |
| CN107793166A (zh) * | 2017-12-11 | 2018-03-13 | 辽宁科技大学 | Zn挥发窑用电熔再结合铝镁铬耐火砖及其制备方法 |
| CN111995376A (zh) * | 2020-08-27 | 2020-11-27 | 安徽海螺暹罗耐火材料有限公司 | 一种用于水泥回转窑的镁铁铝尖晶石砖及其生产工艺 |
| CN113603460A (zh) * | 2021-08-27 | 2021-11-05 | 郑州瑞泰耐火科技有限公司 | 一种水泥回转窑烧成带用微气孔镁铁铝尖晶石砖及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105523769B (zh) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102731121B (zh) | 高性能镁铝铬复合尖晶石砖及其制造方法 | |
| CN105523769A (zh) | 一种水泥回转窑用低导热率镁铁铝尖晶石砖及其生产方法 | |
| CN103992099B (zh) | 一种利用废矿渣制备环保型蜂窝陶瓷蓄热体的方法 | |
| CN108484138A (zh) | 一种添加复合氧化铝微粉及碳源的滑板砖及其制备方法 | |
| CN101239830B (zh) | 一种低温烧成高铝质耐火砖及其制备方法 | |
| CN104591749B (zh) | 一种焦炉炭化室炉墙用超高导热硅砖及其制备方法 | |
| CN106187238A (zh) | 铝矾土复合耐火砖及其制备方法和应用 | |
| CN103382116A (zh) | 含锆高强耐磨浇注料 | |
| CN104119081B (zh) | 焦炉用高导热硅砖 | |
| CN103880447B (zh) | Corex炉用刚玉莫来石复合砖及其制备方法 | |
| CN103641503B (zh) | 高炉用抗侵蚀莫来石砖及其制备方法 | |
| CN106187239A (zh) | 低蠕变焦宝石复合耐火砖及其制备方法和应用 | |
| CN103288465A (zh) | 一种叶腊石砖及其制备方法 | |
| CN103553578B (zh) | 一种凝胶结合低温烧成透气砖及其制备工艺 | |
| CN106242593A (zh) | 低蠕变红柱石复合耐火砖及其制备方法和应用 | |
| CN104355638B (zh) | 一种耐火材料、其制备方法及耐火砖 | |
| CN104291847A (zh) | 一种高强度硅莫砖及其制备方法 | |
| CN106187236A (zh) | 焦宝石复合耐火砖及其制备方法和应用 | |
| CN106187240A (zh) | 低蠕变耐火砖及其制备方法和应用 | |
| CN108083765A (zh) | 低导热抗剥落砖及其制备方法 | |
| CN102674858B (zh) | 塑性复合相抗剥落耐磨型莫来石砖及其制备方法 | |
| CN106187241A (zh) | 低蠕变高荷软耐火砖及其制备方法和应用 | |
| CN104016692B (zh) | 一种干熄焦炉冷却段用耐火材料及制备方法 | |
| CN104876605A (zh) | 锅炉用耐火砖 | |
| CN110577397A (zh) | 一种用废粘土砖生产的高性能粘土砖及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |