YB_T 4693-2018活性石灰回转窑用不烧衬砖/Unfiredbricks for lime rotary kilns
活性石灰回转窑用不烧衬砖
1 范围
本标准规定了活性石灰回转窑用不烧衬砖的牌号、技术要求、试验方法、质量评定程序、包装、标志、运输、储存和质量证明书。
本标准适用于机压成型的活性石灰回转窑用不烧衬砖及复合砖工作层，
2规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 2997 致密定形耐火制品体积密度、显气孔率和真气孔率试验方法
GB/T 5072耐火材料 常温耐压强度试验方法
GB/T 5988耐火材料 加热永久线变化试验方法
GB/T 6900铝硅系耐火材料化学分析方法
GB/T 7321 定形耐火制品试样制备方法
GB/T 10325 定形耐火制品验收抽样检验规则
GB/T 10326定形耐火制品尺寸观及断面 的检查方法
GB/T16546 定形耐火制品包装支、标志、运输和储存
GB/T 21114耐火材料X射线荧光光谱化学分析 熔铸玻璃片法
GB/T 30873 耐火材抗热震性试验方法
YB/T 370 耐火材料荷重软化温度试验方法（非试差升温法)
3牌号
活性石灰回转窑用不烧衬砖按使用部位、使用条件以及理化指标分为 SHB-75、SHB-68 和 SHB-60三个牌号,牌号中 S、H、B分别为“石灰”“回转窑”“不烧衬砖”的首个汉字的汉语拼音首字母,阿拉伯数字为三氧化二铝的质量百分数。
4 技术要求
4.1 活性石灰回转窑用不烧衬砖的理化指标应符合表1的规定。
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表1活性石灰回转窑用不烧衬砖的理化指标 |
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项目 |
指 标 |
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SHB-75 |
SHB-68 |
SHB-60 |
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|
w(Al2O3)/% |
μ0≥ |
75 |
68 |
60 |
|
体积密度/(g/cm3) |
μ0≥ |
2.75 |
2.60 |
2.50 |
|
σ |
0.03 |
|||
|
常温耐压强度/MPa(110 ℃X24h) |
μ0≥ |
60 |
50 |
40 |
|
σ |
10 |
7 |
||
|
常温耐压强度/MPa(1350℃X3 h) |
μ0≥ |
80 |
70 |
60 |
|
σ |
10 |
|||
|
0.2 MPa荷重软化开始温度T0.6/℃ |
μ0≥ |
1500 |
1450 |
1300 |
|
加热永久线变化/%(1350℃X3 h) |
Xmin~Xmax |
-0.5~+0.5 |
-0.5~+0.5 |
-0.5~+0.5 |
|
抗热震性/次(1100℃,水冷) |
≥ |
20 |
20 |
15 |
|
使用部位 |
使用条件苛刻的烧成带 |
烧成带 |
低温带及过渡带 |
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4.2 活性石灰回转窑用不烧衬砖的尺寸偏差及外观应符合表2的规定
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表2活性石灰回转窑用不烧衬砖的尺寸允许偏差及外观 单位为毫米 |
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项目 |
指标 |
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尺寸允许偏差 |
尺寸≤150 |
±2 |
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150≤尺寸≤300 |
±3 |
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尺寸>300 |
±4 |
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扭曲 |
长度≤300 |
≤ |
1.0 |
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长度>300 |
2.0 |
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缺角长度(a+b+c) |
40 |
||
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缺棱长度(e+f+g) |
60 |
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裂纹长度 |
宽度<0.10 |
不限制 |
|
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宽度0.10~0.25 |
60 |
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宽度>0.25 |
不准有 |
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相对边差 |
厚度 |
1 |
|
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注:可根据用户要求对砖的一个主要尺寸进行尺寸分档。 |
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5 试验方法
5.1 试样的制样按 GB/T 7321 进行。
5.2 三氧化二铝的测定按 GB/T 6900 或 GB/T 21114 进行。
5.3 体积密度、显气孔率的测定按 GB/T 2997 进行。
5.4 常温耐压强度的测定按 GB/T 5072 进行。
5.5 加热永久线变化的测定按 GB/T 5988 进行。
5.6 荷重软化温度的测定按 YB/T 370 进行。
5.7抗热震性的测定按 GB/T 30873 进行。
5.8 尺寸和外观的检査按 GB/T 10326 进行。
6质量评定程序
6.1 组批
产品按同一牌号组批,每批重量不大于 100 t。
6.2 抽样及合格判定规则
产品抽样按 GB/T 10325 进行。
6.3 合格评定形式
合格评定可采用供货方声明、使用方认定或第三方认证的形式进行。
7 包装、标志、运输、储存和质量证明书
7.1 产品的包装、标志、运输、储存按 GB/T 16546 进行。
7.2 产品发出时应附有供方质量部门签发的质量证明书,载明供方名称或厂标、需方名称、生产日期、保质期、发货日期、合同号、标准编号、产品名称、牌号、砖号、批号及相应的理化检验结果等。
Unfiredbricks for lime rotary kilns
1 Range
This standard specifies the grades, technical requirements, test methods, quality assessment procedures, packaging, marking, transportation, storage and quality certificates of non-fired lining bricks for active lime rotary kilns.
This standard is applicable to the working layer of non-fired lining bricks and composite bricks for active lime rotary kilns.
2 Normative reference documents
The following documents are essential for the application of this document. For dated references, the date-only version applies to this document. For undated references, the latest version (including all amendment orders) applies to this document.
Test method for bulk density, apparent porosity and true porosity of GB/T 2997 compact shaped refractory products
GB/T 5072 refractories – normal temperature compressive strength test method
GB/T 5988 refractory heating permanent line change test method
GB/T 6900 aluminum-silicon refractory chemical analysis method
GB/T 7321 shaped refractory product sample preparation method
GB/T 10325 shaped refractory products acceptance sampling inspection rules
GB/T 10326 shaped refractory products dimension view and section inspection method
GB/T16546 Shaped refractory products packaging, marking, transportation and storage
GB/T 21114 refractories by X-ray fluorescence spectrochemical analysis of fused cast glass sheets
Test method for thermal shock resistance of GB/T 30873 refractories
Test method for softening temperature of YB/T 370 refractories under load (non-differential warming method)
3 Grade
The non-fired lining bricks for active lime rotary kiln are divided into three grades SHB-75, SHB-68 and SHB-60 according to the use position, the use conditions and the physical and chemical indexes, and the S, H and B in the grades are respectively the Chinese Pinyin initial letter of the first Chinese character of “lime”, “rotary kiln” and “non-fired lining brick”, and the Arabic numerals are the mass percentage of aluminum oxide.
4 Technical Requirements
4.1 The physical and chemical indexes of non-fired lining bricks for active lime rotary kilns shall conform to the provisions of Table 1.
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Table 1 Physical and chemical indexes of unfired lining bricks for active lime rotary kilns |
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Item |
Index |
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SHB-75 |
SHB-68 |
SHB-60 |
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|
w(Al2O3)/% |
μ0≥ |
75 |
68 |
60 |
|
Bulk density/(g/cm3) |
μ0≥ |
2.75 |
2.60 |
2.50 |
|
σ |
0.03 |
|||
|
Compressive strength at room temperature/MPa(110 ℃X24h) |
μ0≥ |
60 |
50 |
40 |
|
σ |
10 |
7 |
||
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Compressive strength at room temperature/MPa(1350℃X3 h) |
μ0≥ |
80 |
70 |
60 |
|
σ |
10 |
|||
|
0.2MPa load softening starting temperatureT0.6/℃ |
μ0≥ |
1500 |
1450 |
1300 |
|
Heating permanent line change/%(1350℃X3 h) |
Xmin~Xmax |
-0.5~+0.5 |
-0.5~+0.5 |
-0.5~+0.5 |
|
Thermal shock resistance/time(1100℃,water-cooling) |
≥ |
20 |
20 |
15 |
|
Site of use |
Use harsh firing strips |
Firing zone |
Low temperature zone and transition zone |
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4.2 The size deviation and appearance of non-fired lining bricks for active lime rotary kiln shall comply with the provisions of Table 2.
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Table 2 The permissible size deviation and appearance of unfired lining bricks for active lime rotary kilns are measured in millimeters |
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Item |
Index |
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Allowable deviation of dimension |
Dimension≤150 |
±2 |
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150≤Dimension≤300 |
±3 |
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Dimension>300 |
±4 |
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contort |
Length≤300 |
≤ |
1.0 |
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Length>300 |
2.0 |
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Missing Angle length(a+b+c) |
40 |
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Missing edge length(e+f+g) |
60 |
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Crack length |
Breadth<0.10 |
No limit |
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Breadth0.10~0.25 |
60 |
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Breadth>0.25 |
Be forbidden from |
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Relative edge difference |
thickness |
1 |
|
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Note: One of the main dimensions of the brick can be dimensioned according to user requirements. |
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5 Test methods
5.1 Sample preparation is carried out according to GB/T 7321.
5.2 Aluminum oxide is measured in GB/T 6900 or GB/T 21114.
5.3 The bulk density and apparent porosity were measured according to GB/T 2997.
5.4 The compressive strength at room temperature shall be measured according to GB/T 5072.
5.5 The determination of the permanent line change of heating was performed according to GB/T 5988.
5.6 The load softening temperature was measured according to YB/T 370.
5.7 Thermal shock resistance is measured according to GB/T 30873.
5.8 Dimensions and appearance are checked in GB/T 10326.
6 Quality assessment procedures
6.1 Batch Groups
Products according to the same brand batch, each batch weight is not more than 100 t.
6.2 Sampling and conformity determination rules
Product sampling was conducted according to GB/T 10325.
6.3 Form of conformity assessment
The conformity assessment can be made in the form of the supplier’s declaration, the user’s certification or the third party’s certification.
7 Packing, marking, transportation, storage and quality certificate
7.1 Packaging, marking, transportation and storage of products shall be carried out in accordance with GB/T 16546.
7.2 The product shall be issued with a quality certificate issued by the quality department of the supplier, indicating the name of the supplier or factory label, the name of the demander, production date, shelf life, delivery date, contract number, standard number, product name, brand number, brick number, lot number and corresponding physical and chemical inspection results.
