GB/T 30921.6-2016 English PDF

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GB/T 30921.6-2016: Test method of purified terephthalic acid (PTA) for industrial use -- Part 6: Determination of particle size distribution
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30921.6-2016	159	Add to Cart	3 days	Test method of purified terephthalic acid (PTA) for industrial use -- Part 6: Determination of particle size distribution	Valid

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GB/T 40394   GB/T 37178   GB/T 32685   GB/T 30921.4   GB/T 30921.5   GB/T 30921.3   

Basic data

Standard ID: GB/T 30921.6-2016 (GB/T30921.6-2016)
Description (Translated English): Test method of purified terephthalic acid (PTA) for industrial use -- Part 6: Determination of particle size distribution
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G16
Classification of International Standard: 71.080.40
Word Count Estimation: 8,882
Date of Issue: 2016-06-14
Date of Implementation: 2017-01-01
Quoted Standard: GB/T 3723; GB/T 6679; GB/T 6682; GB/T 8170; GB/T 19077.1
Regulation (derived from): National Standard Announcement No. 8 of 2016
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
Summary: This standard specifies the air-jet sieving method and the laser diffraction method for determining the particle size distribution of industrial purified terephthalic acid (abbreviated as PTA). The air jet sieving method of this standard is suitable for the determination of the sample with the particle size distribution ranging from 10��m to 4 000��m. The laser diffraction method is suitable for the determination of the sample with the particle size distribution ranging from 1��m to 2 000��m.

GB/T 30921.6-2016: Test method of purified terephthalic acid (PTA) for industrial use -- Part 6: Determination of particle size distribution

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Test method of purified terephthalic acid (PTA) for industrial use.Part 6. Determination of particle size distribution ICS 71.080.40 G16 National Standards of People's Republic of China Test method for industrial terephthalic acid (PTA) Part 6. determination of particle size distribution Testmethodofpurifiedterephthalicacid (PTA) forindustrialuse- Part 6. Determination ofparticlesizedistribution 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

GB/T 30921 "Industrial terephthalic acid (PTA) test method" is divided into the following parts. - Part 1. Determination of p-carboxybenzaldehyde (4-CBA) and p-methylbenzoic acid (p-TOL) - Part 2. Determination of metal content; - Part 3. Determination of water content; - Part 4. Determination of titanium content - Diantipyrylmethane spectrophotometric method; - Part 5. Determination of acid value; - Part 6. Determination of particle size distribution; - Part 7. Determination of b * values - Chromatic aberration method. This part is part 6 of GB/T 30921. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is proposed by China Petroleum & Chemical Corporation. This section is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63). This part of the drafting unit. Sinopec Yangzi Petrochemical Co., Ltd. This part of the main drafters. Ding Daxi, Shao Qiang, Dai Yudi. Test method for industrial terephthalic acid (PTA) Part 6. determination of particle size distribution

1 Scope

This part of GB/T 30921 specifies the air jet sieving method for the determination of the particle size distribution of industrial terephthalic acid (PTA) Laser diffraction method. The air jet sieving method in this section is suitable for the determination of the sample size in the range of 10 μm to 4000 μm. The laser diffraction method Applicable to the particle size distribution range of 1μm ~.2000μm PTA samples of the determination.

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. General rules for sampling safety of industrial chemical products GB/T 3723 General rules for sampling of solid chemical products GB/T GB/T 6682 Analytical laboratory water specifications and test methods Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170 Particle size analysis - Laser diffraction method - Part 1. General rules GB/T

3 air jet sieving method

3.1 Method Summary A set of special sieves was used to sieve the sample on the air jet sieve (adding 1% of the carbon black powder to eliminate the generated static electricity) and then The mass of the sample remaining on the corresponding special sieve is calculated and the percentage of the total mass of the sample is calculated to obtain the particle size of the sample and Its distribution. 3.2 Reagents and Materials 3.2.1 carbon black powder. particle size less than 45μm (325 mesh). 3.2.2 weighing plate or aluminum plate. 3.3 Instruments 3.3.1 Air Spray Sieve. consists of a box containing a special sieve, with a suction port and an air inlet at its bottom, adjustable The air level is 1.5kPa ~ 2.0kPa. 3.3.2 Special sieve. made of stainless steel; sieve classification. 45μm (325 mesh), 53μm (270 mesh), 74μm (200 mesh), 105μm (140 mesh), 149 μm (100 mesh), 210 μm (70 mesh), 250 μm (60 mesh), or others containing 45 μm (325 mesh) (60 mesh) a set of standard sieve, with rubber seal. 3.3.3 balance. sense of 0.1g. ......

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