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GB/T 3000-2016: Dense shaped refractory products -- Determination of permeability to gases
Status: Valid GB/T 3000: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3000-2016 | English | 159 |
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3 days [Need to translate]
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Dense shaped refractory products -- Determination of permeability to gases
| Valid |
GB/T 3000-2016
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| GB/T 3000-1999 | English | 399 |
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3 days [Need to translate]
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Dense shaped refractory products. Determination of permeability to gases
| Obsolete |
GB/T 3000-1999
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| GB/T 3000-1982 | English | RFQ |
ASK
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3 days [Need to translate]
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Test method for permeability of refractory products
| Obsolete |
GB/T 3000-1982
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PDF similar to GB/T 3000-2016
Standard similar to GB/T 3000-2016 GB/T 3001 GB/T 2999 GB/T 2997 GB/T 3002 Basic data | Standard ID | GB/T 3000-2016 (GB/T3000-2016) | | Description (Translated English) | Dense shaped refractory products -- Determination of permeability to gases | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q40 | | Classification of International Standard | 81.080 | | Word Count Estimation | 8,871 | | Date of Issue | 1982-03-29 | | Date of Implementation | 2017-07-01 | | Older Standard (superseded by this standard) | GB/T 3000-1999 | | Regulation (derived from) | National Standard Announcement 2016 No.14 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 3000-2016: Dense shaped refractory products -- Determination of permeability to gases---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.
Dense shaped refractory products - Determination of permeability to gases
ICS 81.080
Q40
National Standards of People's Republic of China
Replacing GB/T 3000-1999
Test method for air permeability of dense shaped refractory products
(ISO 8841..1991, MOD)
2016-08-29 released
2017-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3000-1999 "Test method for permeability of dense shaped refractory products". Compared with GB/T 3000-1999,
The main changes are as follows.
- the requirement for specimens with a height less than 50 mm has been removed (see Note 6.1 of.1999);
--- modified the permeability tester diagram (see Figure 1,.1999 version of Figure 1);
--- The formula for calculating the air permeability is modified [see equation (3), equation (4), and formula (3) of.1999).
This standard uses the re-drafting method to modify ISO 8841..1991 "Determination of the air permeability of dense shaped refractory products".
There are technical differences between this standard and ISO 8841..1991, and the techniques of this standard and ISO 8841..1991 are listed in Appendix A.
Sexual differences and their causes.
Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents.
This standard is proposed and centralized by the National Standardization Technical Committee for Refractory Materials (SAC/TC193).
This standard is responsible for drafting units. Sinosteel Luoyang Refractories Research Institute Co., Ltd., Zhejiang Red Eagle Group Co., Ltd., Mastery
Refractory Technology Co., Ltd.
The main drafters of this standard. Wang Xiufang, Du Wenzhong, Zhang Yi, Yu Bingquan, Ye Xiaoxing, Luo Huaming, Zhang Zhouming.
This standard replaced the previous version of the standard release.
--- GB/T 3000-1982, GB/T 3000-1999.
Test method for air permeability of dense shaped refractory products
1 Scope
This standard specifies the test method for the permeability of dense shaped refractory products. The determination of the permeability of unshaped refractories can be determined according to this standard
get on.
Note. The method specified in this standard takes into account the kinetic viscosity of the gas, so the results obtained are not comparable to those of the previous measurements without considering the viscosity of the gas.
Usually the air permeability is measured and other gases can be used when needed. This standard gives the dynamic viscosity of air and nitrogen.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 18930 Refractory Terminology (GB/T 18930-2002, ISO 836..2001, MOD)
GB/T 21389 Cursor, with table and digital caliper
3 terms and definitions
The following definitions and definitions of the following definitions and definitions apply to this document.
3.1
Permeability
The material allows the gas to pass through the performance under differential pressure.
The volume of gas is known to pass through the sample at a given time and the air permeability (μ) is calculated by equation (1).
t = μ
·1
· A
· (P1-p2) ·
(p1 p2)
2p
(1)
Where.
V - the volume of gas passing through the sample, in cubic meters (m3);
t - the time of the gas passing through the specimen in seconds (s);
μ --- permeability of the sample, in square meters (m2);
η --- the kinetic viscosity of the gas at the test temperature in Pa2 (Pa · s);
A - the cross-sectional area of the specimen, in square meters (m2);
δ - the height of the specimen in meters (m);
p - the absolute pressure of the gas in Pa (Pa);
p1 --- the absolute pressure of the gas entering the sample end in Pa (Pa);
p2 --- absolute pressure of the gas escaping sample end in Pa (Pa).
Note 1. Equation (1) is consistent with Darcy's law and is derived from Hagen-Poiseuile law.
Note 2. p is the pressure of the gas when the gas volume is measured. In this measuring device, p = p1.
Note 3. Usually
p1 p2
2p
Very close to 1, when p1-p2 < 1000Pa when the number can be ignored.
Equation (1) can be rewritten as.
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