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wollastonite scopethis standard wollastonite standard applies friction materials test methods data communication equipment water environmental function zone categories scopethis standard ductile-brittle transition zone
JC/T 535-2007 in English

JC/T 535-2007 in English

SUPERSEDED

Wollastonite

  • Issued on:2007-09-22
  • Implemented on:2008-04-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $150.00
$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Document status: SUPERSEDED
Superseded by: JC/T 535-2023 Wollastonite
Superseded on: 2024-07-01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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