CN110452004B - 一种水泥回转窑过渡带用耐火衬砖及其制备方法 - Google Patents
一种水泥回转窑过渡带用耐火衬砖及其制备方法 Download PDFInfo
- Publication number
- CN110452004B CN110452004B CN201910833790.4A CN201910833790A CN110452004B CN 110452004 B CN110452004 B CN 110452004B CN 201910833790 A CN201910833790 A CN 201910833790A CN 110452004 B CN110452004 B CN 110452004B
- Authority
- CN
- China
- Prior art keywords
- mullite
- powder
- corundum
- meshes
- refractory lining
- 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.)
- Active
Links
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
- C04B35/01—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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- 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
- C04B2235/77—Density
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
- C04B2235/9623—Ceramic setters properties
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9692—Acid, alkali or halogen resistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Abstract
本发明涉及一种水泥回转窑过渡带用耐火衬砖及其制备方法,由下述重量百分比的原料制成:电熔莫来石20‑‑40%,烧结莫来石10‑‑30%,刚玉10‑‑30%,SiC 5‑‑15%,Si3N4 5‑‑10%,硅线石族矿物10‑‑30%,α‑Al2O3 3‑‑10%,优质结合粘土3‑‑7%,复合抗氧剂1‑‑5%;上述配比中:电熔莫来石的粒度组成为:5~3mm占10‑30%,3‑‑1mm占0‑20%,1‑0mm占0‑‑20%和200目占10‑20%。刚玉的粒度组成为:5‑‑3mm占0‑20%,3~1mm占10‑30%;烧结莫来石的粒度组成为:1~0mm烧结莫来石10~20%和200目烧结莫来石0‑‑20%。SiC的粒度组成为:150目97#SiC 5~15%。本水泥回转窑过渡带用耐火衬砖解决了传统镁铝尖晶石砖和硅莫砖的问题,该水泥窑过渡带用耐火衬砖具有抗挂窑皮性能强,抗氧化能力好,体积密度小,导热系数低,能够显著延长水泥窑过渡带使用寿命和降低能源消耗。
Description
技术领域
本发明涉及耐火材料技术领域,具体涉及一种水泥回转窑过渡带用耐火衬砖及其制备方法。
背景技术
水泥是国家基本建设重要的一种基础性材料,也是国民经济的一个支柱性行业。特别是近年来,水泥工业向大型化、原料能源多元化、节能减排高效化等趋势发展,致使水泥窑窑衬所用的耐火材料承受的热应力、机械应力和化学侵蚀大幅增加,严重影响了水泥窑的运转率和窑衬的使用寿命。
水泥回转窑过渡带是窑衬最易损坏的部位,该部位温度高,温度变化频繁,窑皮薄且不稳定,加之水泥熟料产能超产等因素,使衬体受到有害气体的侵蚀、应力作用和磨损加剧,窑皮的时挂时脱使得过渡带窑衬产生结构剥落的损坏更严重。
目前水泥回转窑过渡带用耐火材料主要是镁铝尖晶石砖和硅莫砖。这两种产品在使用时主要存在以下问题:一是抗氧化能力差,抗挂窑皮性能差;二是导热系数大,使窑筒体温度偏高,能耗大,容易造成筒体氧化、腐蚀变形和刚度下降,降低筒体使用寿命;三是衬体的体积密度高,窑体承重大,使窑体机械传动磨损和电耗增大。
发明内容
本发明的目的是为了解决目前产品使用存在的问题,提供一种水泥回转窑过渡带用耐火衬砖及其制备方法,该耐火衬砖具有高温强度高、抗碱硫侵蚀性好、热震稳定性优良、导热系数小和重量轻的特点。
本发明为解决上述技术问题,所提供的技术方案是:一种水泥回转窑过渡带用耐火衬砖,由下述重量百分比的原料制成:电熔莫来石20--40%,刚玉10--30%,烧结莫来石10--30%,SiC 5--15%,Si3N4 5--10%,硅线石族矿物10--30%,α-Al2O3 3--10%,优质粘土3--7%,复合抗氧化剂1--5%;
作为本发明进一步的方案:上述配比中:电熔莫来石的粒度组成为:5~3mm占10-30%,3--1mm占0-20%,1-0mm占0--20%和200目占10-20%。刚玉的粒度组成为:,5--3mm占0-20%,3~1mm占10-30%;烧结莫来石的粒度组成为:1~0mm烧结莫来石10~20%和200目烧结莫来石0--20%。SiC的粒度组成为:150目97#SiC 5~15%。
作为本发明再进一步的方案:硅线石族矿物的粒度组成为:1--0mm硅线石族矿物5~20%,0.2--0mm硅线石族矿物5--20%。复合抗氧化剂为金属Si 1--3%和淀粉类聚合物0--2%。
作为本发明再进一步的方案:金属硅粉的粒度为200目.α-Al2O3粒度≤5μm,Al2O3≥98.5%.优质结合粘土粒度≤0.088mm,Al2O3≥30%,Fe2O3≤1.50%.
一种水泥回转窑过渡带用耐火衬砖的制备方法,包括以下步骤:
a、取电熔莫来石,烧结莫来石,刚玉,碳化硅,氮化硅,硅线石族矿物,Al2O3,优质结合粘土,复合抗氧化剂,备用;
b、将电熔莫来石加工分成5~3mm,3--1mm和200目三种不同粒度的颗粒料,备用;将刚玉加工分成5--3mm和3~1mm两种粒度的颗粒料,备用;将烧结莫来石加工分成1--0mm和200目细粉两种颗粒料,备用;将金属硅磨成粒度≤200目的细粉,备用;将优质结合粘土磨成粒度≤200目的细粉,备用;
c、按重量百分比取:电熔莫来石20--40%,刚玉10--30%,烧结莫来石10--30%,SiC 5--15%,硅线石族矿物10--30%,α-Al2O3 3--10%,优质结合粘土3--7%,复合抗氧化剂1--5%;备用:
d、将步骤c中5~3mm的电熔莫来石,3--1mm电熔莫来石,5--3刚玉,3~1mm刚玉,1~0mm烧结莫来石,1--0mm硅线石族矿物,加入混碾机中,干混3~5min,然后加入水和淀粉类化合物,继续混碾5~10min,最后将200目的电熔莫来石粉、金属硅粉、Al2O3微粉,碳化硅粉,0.2--0硅线石族矿物,氮化硅粉,优质结合粘土粉加入混碾机,混碾10--15min,得到碾压后泥料;
e、将碾压后的泥料经压力机压制成型,得到半成品。
c、将半成品推入100--120℃干燥窑干燥,控制半成品的残余干燥水分小于1%.
f、将干燥后合格的半成品装窑车进入高温隧道窑,在1400--1500℃温度烧成,按国标拣选出成品。
有益效果
本发明的水泥回转窑过渡带用耐火衬砖解决了现有传统镁铝尖晶石砖和硅莫砖抗氧化能力差、抗挂窑皮差、导热系数高和体积密度大的问题,该水泥窑过渡带用耐火衬砖具有抗挂窑皮性能强,抗氧化能力好,体积密度小,导热系数低,能够显著延长水泥窑过渡带使用寿命和降低能源消耗。
具体实施方式
一种水泥回转窑过渡带耐火衬砖,由下述重量百分比的原料制成:电熔莫来石20--40%,刚玉10--30%,烧结莫来石10--30%,SiC 5--15%,Si3N4 5--10%,硅线石族矿物10--30%,α-Al2O33--10%,优质结合粘土3--7%,复合抗氧化剂1--5%;
所述电熔莫来石的粒度组成为:5~3mm电熔莫来石10~30%,3--1电熔莫来石0--20%,200目电熔莫来石10~20%。
所述刚玉的粒度组成为:,5--3刚玉0--20%,3~1mm刚玉10~30%。
所述烧结莫来石的粒度组成为:1~0mm烧结莫来石10~20%,200目烧结莫来石0--20%。
所述SiC的粒度组成为:150目97#SiC 5~15%。
所述硅线石族矿物的粒度组成为:1--0mm硅线石族矿物10~20%,0.5--0mm硅线石族矿物10--20%。
所述添加剂为金属Si:1--3%和淀粉类聚合物0--2%。
所述金属硅粉的粒度为200目,Si≥98.5%;α-Al2O3粒度≤8μm,Al2O3≥98.5%;优质结合粘土粒度≤0.088mm,Al2O3≥30%,Fe2O3≤1.30%.
一种水泥回转窑过渡带耐火衬砖的制备方法,包括以下步骤:
取电熔莫来石,烧结莫来石,碳化硅,氮化硅,硅线石族矿物,α-Al2O3,优质结合粘土,复合抗氧化剂,备用;
将电熔莫来石磨细,分级成5~3mm,3--1mm,200目三种不同粒度的颗粒料,备用;
将刚玉磨细,分级成5--3mm,3~1mm两种粒度的颗粒料,备用;
将烧结莫来石磨细,1--0mm和200目细粉两种颗粒料,备用;
将金属硅磨成粒度≤200目的细粉,得到金属硅粉,备用;
将优质结合黏土磨成粒度≤200目的细粉,得到优质结合粘土粉,备用;
按重量百分比取:5--3mm电熔莫来石15%,3--1mm电熔莫来石15%,200目电熔莫来石10%,1--0mm烧结莫来石10%,200目烧结莫来石10%,150目97#SiC 10%,硅线石族矿物1--0mm 20%,α-Al2O35%,优质结合粘土3%,复合抗氧化剂2.5%,备用;
所述的复合抗氧化剂:为金属Si 2%和淀粉类化合物0.5%。
将步骤c中5~3mm的电熔莫来石,3--1mm电熔莫来石,1--0mm电熔莫来石,1~0mm烧结莫来石,1--0mm硅线石族矿物,加入混碾机中,干混3~5min,然后加入水和淀粉类化合物,继续混碾5~10min,最后将200目的电熔莫来石粉,200目烧结莫来石粉,金属硅粉,Al2O3微粉,碳化硅粉,氮化硅粉,优质结合粘土粉加入混碾机,混碾10--15min,得到碾压后泥料;
将碾压后泥料经压力机压制成型,得到半成品。
将半成品进入100--120℃干燥窑干燥,残余干燥水分小于1%.
将干燥后合格的半成品装窑车进入高温隧道窑,1400--1500℃烧成,按国标拣选成品。
实施例2
一种水泥回转窑过渡带用耐火衬砖的制备方法,包括以下步骤:
取电熔莫来石,烧结莫来石,刚玉,碳化硅,氮化硅,硅线石族矿物,Al2O3微粉,优质结合粘土,复合抗氧化剂,备用;
将电熔莫来石磨细,分级成5~3mm,3--1mm和200目三种不同粒度的颗粒料,备用;
将刚玉磨细,分级成5--3mm和3~1mm两种粒度的颗粒料,备用;
将烧结莫来石磨细,1--0mm和200目两种颗粒料,备用;
将金属硅磨成粒度≤200目的细粉,得到金属硅粉,备用;
将优质结合黏土磨成粒度≤200目的细粉,得到优质结合粘土粉,备用;
按重量百分比取:5--3mm电熔莫来石10%,3--1mm电熔莫来石10%,200目电熔莫来石8%,5--3mm刚玉10%,3--1mm刚玉10%,1--0mm烧结莫来石10%,150目97#SiC 12%,Si3N4 5--10%,硅线石族矿物1--0mm10%,硅线石族矿物0.2--mm 10%,α-Al2O35%,优质结合粘土3%,复合抗氧化剂2.5%,备用;
所述的复合抗氧化剂:为金属Si 2%和淀粉类化合物0.5%。
将步骤c中5~3mm的电熔莫来石,3--1mm电熔莫来石,5--3刚玉,3~1mm刚玉,1~0mm烧结莫来石,1--0mm硅线石族矿物,加入混碾机中,干混3~5min,然后加入水和淀粉类化合物,继续混碾5~10min,最后将200目的电熔莫来石粉、金属硅粉、Al2O3微粉,碳化硅粉,0.2--0硅线石族矿物,氮化硅粉,优质结合粘土粉加入混碾机,混碾10--15min,得到碾压后泥料;
将碾压后泥料经压力机压制成型,得到半成品。
将半成品进入100--120℃干燥窑干燥,残余干燥水分小于1%.
将干燥后合格的半成品装窑车进入高温隧道窑,1400--1500℃烧成,按国标拣选成品。
性能测试:
该砖的理化指标如下表所示:
将该砖的使用效果与目前水泥窑过渡带用的传统镁铝尖晶石砖的使用效果
进行对比,结果如下表所示:
氮化硅 | 碳化硅 | |
线性膨胀率m/℃ | 2.75×0.00001 | 6.8×0.00001 |
导热率 | 16.7w/m*k | 36.2w/m*k |
氧化温度 | 1300--1400℃ | 800--900℃ |
氮化硅,为高级耐火原料,氮化硅在热导率、线膨胀率方面的性能均优于碳化硅,尤其在氧化气氛下,氮化硅的开始氧化温度最低为1300℃,SiC在空气中加热到800℃时即开始氧化,1000~1300℃时的氧化速度缓慢,生成SiO2玻璃保护膜,1300℃以后保护膜中开始结晶出方石英,相变引起保护膜开裂,从而氧化速度有所增加,掺入氮化硅后,提高了砖体整体的氧化温度,保护膜开裂的温度也对应升高,增高抗氧化能力,所以以氮化硅来取代或部分取代硅莫砖中的碳化硅,会收到良好的抗挂窑皮效果,避免窑皮频繁脱落引起温度变化,且提高抗氧化能力。
该水泥窑过渡带用耐火衬砖在某水泥公司5000T生产线试验使用中,筒体温度降低30--50℃,筒体重量减少12%,窑皮厚度均匀稳定,操作良好。说明本发明的水泥回转窑过渡带用耐火衬砖解决了现有传统镁铝尖晶石砖和硅莫砖抗氧化能力差、抗挂窑皮差、导热系数高和体积密度大的问题,该水泥窑过渡带用耐火衬砖具有高温强度高,抵抗碱硫侵蚀优异,热震稳定性优良,较低的导热系数和较小的体积密度,能显著延长水泥窑过渡带使用寿命和降低能源消耗。
Claims (1)
1.一种水泥回转窑过渡带用耐火衬砖的制备方法,其特征在于:
所述水泥回转窑过渡带用耐火衬砖由下述重量百分比的原料制成:电熔莫来石20-40%,刚玉10-30%,烧结莫来石10-30%,硅线石族矿物10-30%,SiC 5-15%,Si3N4 5-10%,α-Al2O3 3-10%,优质结合粘土3-7%,复合抗氧剂 1-5%;
所述复合抗氧剂由金属Si 1-3%和淀粉类聚合物2%组成;所述耐火衬砖在高温隧道窑内于1400~1500℃烧成,并且所述耐火衬砖的体积密度为2.60-2.65,在1100℃水冷的热震稳定性≥30次,0.2MPa荷重软化温度T0.6≥1700℃;
所述制备方法包括以下步骤:
a、取电熔莫来石,烧结莫来石,刚玉,SiC,Si3N4,硅线石族矿物,α-Al2O3,优质结合粘土,复合抗氧剂,备用;
b、将电熔莫来石磨细,分级成5mm,3mm,1mm和200目四种不同粒度的颗粒料,备用;将刚玉磨细,分级成5mm和 3mm两种粒度的颗粒料,备用;将烧结莫来石磨细,分级成1mm和200目细粉两种颗粒料,备用;将金属Si磨成粒度≤200目的细粉,得到金属Si粉,备用;将优质结合粘土磨成粒度≤200目的细粉,得到优质结合粘土粉,备用;
c、按重量百分比取:5mm电熔莫来石10~30%,3mm电熔莫来石0~20%,1mm电熔莫来石0~20%,200目电熔莫来石10~20%,5mm刚玉0~20%,3mm刚玉10~30%,1mm烧结莫来石10~20%,200目烧结莫来石0~20%,150目97#SiC 5~15%,硅线石族矿物10~30%,α-Al2O3 3~10%,优质结合粘土3-7%,复合抗氧剂 1-5%,备用;所述硅线石族矿物的粒度组成为: 1mm硅线石族矿物5-20%,0.2mm硅线石族矿物5-20%;
d、将步骤c中5mm的电熔莫来石,3mm的电熔莫来石,5 mm的刚玉,3mm的刚玉,1mm的烧结莫来石,1 mm的硅线石族矿物,加入混碾机中,干混3~5min,然后加入水和淀粉类化合物,继续混碾5~10min,最后将200目的电熔莫来石粉,金属Si粉,α-Al2O3微粉,SiC粉,0.2 mm的硅线石族矿物,Si3N4粉,优质结合粘土粉加入混碾机,混碾10~15min,得到碾压后泥料;
e、将碾压后泥料经压力机压制成型,得到半成品;
f、将半成品进入100~120℃干燥洞干燥,残余干燥水分1%;
g、将干燥后合格的半成品装窑车进入高温隧道窑,1400-1500℃烧成,按国标拣选成品。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910833790.4A CN110452004B (zh) | 2019-09-04 | 2019-09-04 | 一种水泥回转窑过渡带用耐火衬砖及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910833790.4A CN110452004B (zh) | 2019-09-04 | 2019-09-04 | 一种水泥回转窑过渡带用耐火衬砖及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110452004A CN110452004A (zh) | 2019-11-15 |
CN110452004B true CN110452004B (zh) | 2022-03-22 |
Family
ID=68490702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910833790.4A Active CN110452004B (zh) | 2019-09-04 | 2019-09-04 | 一种水泥回转窑过渡带用耐火衬砖及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110452004B (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115403394A (zh) * | 2022-08-29 | 2022-11-29 | 郑州瑞泰耐火科技有限公司 | 一种锂盐回转窑用特种低铝莫来石砖及其制备方法 |
CN115594492A (zh) * | 2022-09-27 | 2023-01-13 | 郑州荣盛窑炉耐火材料有限公司(Cn) | 一种垃圾焚烧炉回转窑用半轻质碳氮复合耐火砖及其制备方法 |
CN115417682B (zh) * | 2022-09-30 | 2023-10-03 | 安徽瑞泰新材料科技有限公司 | 一种工业窑炉用耐火砖及其制备方法 |
CN116573944B (zh) * | 2023-04-28 | 2024-09-17 | 广东新岭南科技有限公司 | 硅线石耐火材料及其制备方法和硅线石砖 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1919797A (zh) * | 2006-09-08 | 2007-02-28 | 无锡市宝宜耐火材料有限公司 | 水泥回转窑过渡带用耐火制品 |
CN101439979A (zh) * | 2008-12-13 | 2009-05-27 | 郑州顺兴耐火材料有限公司 | 高荷软抗热震耐火砖 |
CN101811882A (zh) * | 2010-04-27 | 2010-08-25 | 北京通达耐火技术股份有限公司 | 一种大型水泥窑用矾土-氮化硅复合耐磨砖及其制造方法 |
CN102115335A (zh) * | 2009-12-30 | 2011-07-06 | 巩义通达中原耐火技术有限公司 | 水泥回转窑过渡带用新型耐磨硅莫氮砖 |
CN103204692A (zh) * | 2013-05-10 | 2013-07-17 | 郑州瑞泰耐火科技有限公司 | 一种新型轻质莫来石砖及其制备方法 |
CN103234346A (zh) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热多层复合莫来石砖及其制备方法 |
CN103351168A (zh) * | 2013-05-10 | 2013-10-16 | 郑州瑞泰耐火科技有限公司 | 一种新型莫来石砖及其制备方法 |
US20140295368A1 (en) * | 2011-10-14 | 2014-10-02 | Refractaria, S.A. | Refractory protective material for clinker furnaces, which prevents thermochemical attack without the formation of encrustation or rings |
CN105924190A (zh) * | 2016-04-28 | 2016-09-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热硅莫砖及其制备方法 |
CN106747523A (zh) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | 低铁莫来石砖及其制造方法 |
CN109534833A (zh) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | 一种水泥窑过渡带和烧成带结合部用莫来石刚玉碳化硅砖 |
CN109574639A (zh) * | 2018-12-25 | 2019-04-05 | 郑州真金耐火材料有限责任公司 | 高热震稳定性刚玉莫来石砖及其制备方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03193336A (ja) * | 1985-12-27 | 1991-08-23 | Nichias Corp | 耐熱性ハニカム構造体 |
-
2019
- 2019-09-04 CN CN201910833790.4A patent/CN110452004B/zh active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1919797A (zh) * | 2006-09-08 | 2007-02-28 | 无锡市宝宜耐火材料有限公司 | 水泥回转窑过渡带用耐火制品 |
CN101439979A (zh) * | 2008-12-13 | 2009-05-27 | 郑州顺兴耐火材料有限公司 | 高荷软抗热震耐火砖 |
CN102115335A (zh) * | 2009-12-30 | 2011-07-06 | 巩义通达中原耐火技术有限公司 | 水泥回转窑过渡带用新型耐磨硅莫氮砖 |
CN101811882A (zh) * | 2010-04-27 | 2010-08-25 | 北京通达耐火技术股份有限公司 | 一种大型水泥窑用矾土-氮化硅复合耐磨砖及其制造方法 |
US20140295368A1 (en) * | 2011-10-14 | 2014-10-02 | Refractaria, S.A. | Refractory protective material for clinker furnaces, which prevents thermochemical attack without the formation of encrustation or rings |
CN103204692A (zh) * | 2013-05-10 | 2013-07-17 | 郑州瑞泰耐火科技有限公司 | 一种新型轻质莫来石砖及其制备方法 |
CN103234346A (zh) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热多层复合莫来石砖及其制备方法 |
CN103351168A (zh) * | 2013-05-10 | 2013-10-16 | 郑州瑞泰耐火科技有限公司 | 一种新型莫来石砖及其制备方法 |
CN105924190A (zh) * | 2016-04-28 | 2016-09-07 | 郑州瑞泰耐火科技有限公司 | 一种低导热硅莫砖及其制备方法 |
CN106747523A (zh) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | 低铁莫来石砖及其制造方法 |
CN109574639A (zh) * | 2018-12-25 | 2019-04-05 | 郑州真金耐火材料有限责任公司 | 高热震稳定性刚玉莫来石砖及其制备方法 |
CN109534833A (zh) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | 一种水泥窑过渡带和烧成带结合部用莫来石刚玉碳化硅砖 |
Non-Patent Citations (1)
Title |
---|
新型干法水泥窑用耐火材料的现状与发展;袁林等;《耐火材料》;20101015;第44卷(第5期);第383-386页 * |
Also Published As
Publication number | Publication date |
---|---|
CN110452004A (zh) | 2019-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110452004B (zh) | 一种水泥回转窑过渡带用耐火衬砖及其制备方法 | |
CN106938922B (zh) | 硅刚玉耐磨砖 | |
CN109279884B (zh) | 一种高强度堇青石-莫来石陶瓷辊棒及其制备方法 | |
CN107140951B (zh) | 一种晶须复合高性能镁砖及其制造方法 | |
CN100337987C (zh) | 干熄焦用莫来石-碳化硅耐火材料及制备 | |
CN101555151B (zh) | 一种球式热风炉用刚玉质耐火球及其制备方法 | |
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 | |
CN106145976B (zh) | 水泥窑用红柱石-莫来石-碳化硅砖及其制备方法 | |
CN105198463B (zh) | 一种耐腐蚀的碳化硅砖 | |
CN107892581B (zh) | 一种高强抗腐锆刚玉蜂窝陶瓷体及其制备方法 | |
CN108083765B (zh) | 低导热抗剥落砖及其制备方法 | |
CN110105059B (zh) | 一种高抗热震、低蠕变热风炉用砖及其制造方法 | |
CN109650882B (zh) | 一种纤维内衬用复合涂料及其制备方法 | |
CN110028316B (zh) | 一种堇青石窑具匣钵及其制备方法 | |
CN111807822A (zh) | 一种添加铝硅合金低温烧制的铝锆碳滑板及其生产方法 | |
CN115321956B (zh) | 一种利用高温液相增韧镁碳砖及其制备方法 | |
CN107032811B (zh) | 一种焦炉用低铁低铝莫来石砖及制备方法 | |
CN111423241A (zh) | 一种具有纤维增韧的莫来石砖及其制备方法 | |
CN113651621A (zh) | 一种水泥回转窑用特种新型硅莫砖及其制备工艺 | |
CN112898036A (zh) | 一种高性能莫来石浇注料及其制备方法 | |
CN107021764B (zh) | 高温硅线石砖及其生产方法 | |
CN103771878B (zh) | 一种红柱石砖的制法 | |
CN106699142B (zh) | 一种浇注高锰钢用金属铝结合无硅低碳铝锆碳滑板及其生产方法 | |
CN108145618B (zh) | 一种纳米陶瓷结合剂cbn磨具的微波制备方法 | |
CN112624743B (zh) | 一种浇注成型的转炉出钢口挡渣用滑板砖及生产方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |