HG/T 2976-2011Fertilizer catalysts - Determination of attrition rate (English PDF)
化肥催化剂磨耗率的测定
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
December 20, 2011
Implementation date
July 1, 2012
Scope
HG/T 2976-2011 is the English-translated version of 化肥催化剂磨耗率的测定.
HG/T 2976-2011 is the Chinese chemical industry method for measuring how far a fertilizer catalyst breaks down under mechanical wear, expressed as a single attrition rate. Referring to ASTM D 4058-1996, it describes the abrasion tester used - a grinding cylinder of 120 mm bore and 150 mm length carrying one internal baffle 150 mm long and 18 mm high, turning at 60 r/min for 30 min - together with the mechanical sieving instrument that follows the run. The procedure covers sampling to GB/T 6678, drying and preparing the specimen, the measurement steps and the calculation of the rate from the fines passing the test sieve. It applies to cylindrical, strip, amorphous, annular and spherical catalysts. Replacing HG/T 2976-1999, it was issued on 20 December 2011 and has applied since 1 July 2012.
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Document preview — HG/T 2976-2011
National Standard of the People's Republic of China
- Replacing
- HG/T 2976-1999
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Principle4
- 4 Instrument4
- 5 Sampling5
- 6 Measurement steps5
- 7 Result calculation5
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces HG/T 2976-1999 "Test method for attrition and abrasion of fertilizer catalysts". Compared with HG/T 2976-1999, the main technical changes are as follows, except for editorial changes.
- DELETE the balance and micro-printer configured for the attrition meter (4.3 ~ 4.4 of the 1999 edition);
- MODIFY the drying temperature of sample preparation (see 5.2; 5.2 of the 1999 edition).
This standard refers to ASTM D 4058-1996 "Standard test method for attrition and abrasion of catalysts and catalyst carriers".
1 Scope
This standard specifies the instrument, sampling, measurement steps, result calculation for the determination of the attrition rate of fertilizer catalysts.
This standard is applicable to the determination of the attrition rate of cylindrical, strip, amorphous, annular, spherical fertilizer catalysts.
2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard.
GB/T 6003.1 Test sieves of metal wire cloth
GB/T 6678 General principles for sampling chemical products
3 Principle
Place a certain mass of processed specimen in the grinding cylinder of the abrasion tester. After rotating at a certain speed for a certain period of time, the sample is worn to produce particles. The results of the abrasion rate measurement are calculated, after sieving and weighing.
4 Instrument
Main parameters of the abrasion tester (equipped with a mechanical sieving instrument).
- Inner diameter of grinding cylinder. Phi120 mm;
- Length of grinding cylinder. 150 mm;
- Inner baffle of grinding cylinder. 1 piece, 150 mm long, 18 mm high;
- Grinding cylinder speed. 60 r/min;
- Grinding time. 30 min. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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Editions of HG/T 2976
| Edition | Title | Revision | Status |
|---|---|---|---|
| HG/T 2976-2011 | Fertilizer catalysts - Determination of attrition rate | current edition | Current |
| HG/T 2976-1999 | Fertilizer catalysts - Determination of attrition rate | previous edition | Superseded |
This page sells the current edition, HG/T 2976-2011. Earlier editions are listed for reference only.
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Related Standards
GB/T 6003.1-2022 — Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth
GB/T 6678-2003 — General principles for sampling chemical products
HG/T 3066-2025 — Rubber compounding ingredients - Precipitated hydrated silica - Determination of loss on ignition of the dried sample
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