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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 6288-2021: Determination of particle size for granular molecular sieve Status: Valid GB/T 6288: Historical versions
Basic dataStandard ID: GB/T 6288-2021 (GB/T6288-2021)Description (Translated English): Determination of particle size for granular molecular sieve Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G85 Word Count Estimation: 10,140 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 6288-2021: Determination of particle size for granular molecular sieve---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Determination of particle size for granular molecular sieve ICS 71.100.99 CCSG85 National Standards of People's Republic of China Replace GB/T 6288-1986 Granular molecular sieve particle size determination method Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 6288-1986 "Method for the determination of particle size of granular molecular sieves". Compared with GB/T 6288-1986, except for structural adjustment In addition to the overall and editorial changes, the main technical changes are as follows. a) Added terms and definitions (see Chapter 3); b) Improve the test equipment (see 4.2, 5.2, 1.2 and 2.2 of the 1986 edition); c) Detailed test procedures (see 4.4, 5.4, 1.3 and 2.4 of the 1986 edition); d) The test report requirements have been added (see Chapter 6). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Standardization Technical Committee for Fertilizers and Soil Conditioners (SAC/TC105). Drafting organizations of this document. Shanghai Research Institute of Chemical Industry Co., Ltd., Shanghai Lvqiang New Material Co., Ltd., Huzhou Qiangqiang Molecular Sieve Technology Co., Ltd. Company, Shanghai Huanqiu Engineering Co., Ltd. The main drafters of this document. Zhang Jia, Wang Pengfei, Zhu Lin, Zhu Yi, Zhou Yongxian, He Qiuping, Wu Junsheng, Wu Chenxi, Chen Jie, Jiang Shui. The previous releases of this document and the documents it replaced are as follows. ---First published as GB/T 6288-1986 in 1986; ---This is the first revision. Granular molecular sieve particle size determination method Warning---The personnel using this document should have practical experience in formal laboratory work. This document does not indicate all possible safety issues question. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.1 ScopeThis document specifies the method for determining the particle size of granular molecular sieves. This document is applicable to the determination of particle size of various spherical and strip molecular sieves.2 Normative referencesThe contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 6003.1-2012 Technical requirements and inspection of test sieves Part 1.Metal wire woven mesh test sieves GB/T 6678 General Rules for Sampling of Chemical Products3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Particlesize The diameter of the spherical particle product or the cross-sectional diameter of the bar particle product. [Source. GB/T 33032-2016, 2.3.1] 3.2 Particlelength The length of the bar pellet product. 3.3 Granularity The mass percentage of the spherical molecular sieve within the specified particle size range of the sample or the mass percentage of the strip-shaped molecular sieve within the specified strip length range of the sample percentage. [Source. GB/T 33032-2016, 2.3.2, with modification] 3.4 Screening An operation method in which one or several test sieves are used to separate the mixture of molecular sieves of different particle sizes by size. [Source. GB/T 33032-2016, 2.3.3] 3.5 Screenoverflow Sieve residue The part of the sieve that cannot pass the specified sieve number. ...... |
