JC/T 535-2007 in English
SUPERSEDEDWollastonite
- Issued on:2007-09-22
- Implemented on:2008-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
| Standard No: | JC/T 535-2007 |
| Document status: | SUPERSEDED |
| Superseded by: |
JC/T 535-2023 Wollastonite
|
| Superseded on: | 2024-07-01 |
| Title in English: | Wollastonite |
| Title in Chinese: | 硅灰石 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2007-09-22 |
| Implemented on: | 2008-04-01 |
| Superseding: |
JC/T 535-1994 wollastonite
|
| ICS Classification: | 73.080-Non-metalliferous minerals |
| Chinese Classification: | Q61-Asbestos material |
| Professional Classification: | JC-Building Material |
| Related Keywords: | wollastonite scopethis standard
wollastonite standard applies friction materials test methods |
| Related Topics: | jc/t 1021.9-2007
jc/t1041-2007 wj 535-2007 Ash silica lime edta lime iso wollastonite role of lime JC/T1055-2007 limestone grade Silica fume Silica industry Silica fume grade Limestone inspection jc/t1049-2007 jc/t535-2023 |
本标准是对JC/T535—1994《硅灰石》进行了修订。
本标准与JC/T535-1994相比主要变化如下:
——将表1中针状硅灰石长径由10:1修改为≥8:1,并取消了普通粉、细粉、超细粉粒径范围的下限要求。
——将按产品质量分级(优等品、一级品、二级品、合格品)修改为按矿物含量分级(一级品、二级品、三级品、四级品)。
——将一级品、二级品、三氧化二铁含量(%)由≤0.2、≤0.4、修改为≤0.5、≤1.0。
——将三级品的硅灰石含量(%)、二氧化硅含量(%)、氧化钙含量(%)、三氧化二铁含量(%)、烧失量(%)由≥70、44~56、40~50、≤0.8、≤6.0修改为≥60、41~59、28~50、≤1.5、≤90。
——将四级品的硅灰石含量(%)、二氧化硅含量(%)、氧化钙含量(%)由≥60、41~59、38~50修改为≥40、≥40、≥30,取消三氧化二铁含量(%)、烧失量(%)要求。
——将烧失量中灼温度由950℃提高到1000℃。
——将烧失量测定允许差由平行样间绝对误差(烧失理>1、允许差<0.5;烧失量≤1、允许差<0.1)修改为平行样间相对误差不大于10%
——将普通粉筛余量允许差由平行样间绝对误差(烧失理>1、允许差<0.5;烧失量≤1、允许差<0.05)修改为平行样间绝对误差不大于0.1%。
Scope
This standard specifies the classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of wollastonite. This standard applies to wollastonite used in ceramics, coatings, friction materials, sealing materials, welding rods and other fields.

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