HG/T 2976-1999 Determination of attrition rate of fertilizer catalysts HG/T2976-1999 Standard download decompression password: www.bzxz.net

ICs71.100.99
Chemical Industry Standard of the People's Republic of China
HG/T 2976—1999
HG/T 35901999
Test method for wear rate of fertilizer catalyst and anti-wear performance of molecular sieve desiccant for refrigeration system
Published on April 20, 1999
Implementation on April 1, 2000
Published by National Petroleum and Chemical Industry Bureau
Registration No. 2775-1999
HG/T2976-1999
This standard is equivalent to the standard ASTML415892 Standard test method for wear rate of catalysts and their carriers adopted by the American Association for Testing and Application of Materials, and is combined with the actual situation to certify the chemical industry standard HG/T2976-18 (1988) Determination method for wear rate of fertilizer catalysts and molecular sieves and adsorbents. The differences of this standard from ASTM43\8-92 are as follows:
The grinding wheel size is 54mm×52mm of ASTM, with a single horizontal grinding wheel of 51mm and an inner baffle of 51mm, and the width is 12mm×150mm, with a double horizontal grinding wheel of 13mm and an inner baffle of 13mm, so as to make the abrasion of the materials more complete and the dyeing more convenient, and to do the flat beating test at the same time:
In order to prevent the tea samples from being affected by the temperature and causing decomposition or destruction of physical properties, the drying temperature of ASM is changed from 409℃ for 3h to 10℃ for 3h. Although there is a certain amount of moisture in the sample, it has little effect on the absolute difference in wear. The standard for wear rate cancels the step of measuring the wear rate after grinding. The difference between this standard and HG26831988 is as follows:
This standard adopts the multifunctional wear rate of weighing, screening, grinding, calculating, printing and recording the wear rate of the product. The grinding size is 1mmx30cm and 5mXs00mm. The grinding size is changed to 120mmx15mam and an internal stop block is added. The induction tube is changed from axial operation to horizontal operation. This standard stipulates that the sample needs to be pre-dried before the wear rate measurement. The quantity is changed from 2 and 2, and the sample plate is changed to 120. The mill turntable output is changed from 25/min to ecr/mn. The rotation time is changed to 30min. The expression of the calculation of the wear rate of this standard is different from that of the radio and television. This standard shall be implemented from the date of implementation. T297i-.1983: Issued by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Technical Supervision Department of the Ministry of Chemical Industry. The main drafting unit of this standard: Shanghai Institute of Chemical Industry. The participating drafting unit of this standard: Dalian Yuneng Testing Machinery Factory. The three main drafters of this standard: Zhu Xie and Er Zhili. This standard was first issued as a national research standard in 1933, approved in 18, and adjusted to a recommended international standard for the chemical industry in 1888, and the new number was confirmed in 2017.
ASTM
This standard is issued and published under the standard number I408. The number in the standard number briefly indicates the year when the standard was first formulated. In the case of revision, the number in the bracket indicates the year of the last revision. "Instructions for use" means the changes that may occur after the last revision or approval. 2. 1 Scope. Chemical Industry Standard of the People's Republic of China. Determination of Catalytic Attrition Rate of Fertilizer. Teleernination fos attrition aud ahrasinn of fertilizer ralalyst. HG/I 29761999. This standard specifies the instrumental settings, sample preparation, determination steps and description of determination results for the determination of catalytic attrition rate of fertilizer ralalyst. This standard is applicable to the determination of catalytic attrition rate of fertilizer ralalyst particles in the shape of cylinder, amorphous, ring and sphere. 2 Referenced Standards. The following standards contain clauses: The clauses of this standard are constructed by citing in this standard: When this standard is published, the versions shown are valid. All standards The following standards should be used to determine the performance of the new version of the vehicle. The following standards should be used to determine the performance of the new version of the vehicle. GB/T125) A table of performance values ​​and the method for judging the performance values ​​... 1 joint consumption meter
Lianpian inner diameter 112Vmm1
Joint length\.10m
Inner baffle\: fast. Length 150mm. Height 18mm: Grinding mill rotation, 6c1/min
Rotation time is 3Cmir.
4.2 Sample hoof
First: 850m
Xuebang: 415;
Decoration time: 366bZxz.net
4.3 Day and a half
Quantity selection 206:
Precision change 0.-g.
4.4 Embedded printer
Standard description:
1..31, see the standard and A5M45
National Oil and Chemical Industry Bureau 1999-04-2 approved 2000-04-01 implementation
4.5 Experimental determination equipment
5 Sample preparation
IG/T 29761999
5. 1 According to the method of separation, the sample box is divided into about 250 g, and the dust particles are screened with a sample screen with an aperture of 850 μm. 5-2 The sample needs to be placed in a carbon plate and dried at 1℃ for 2h. 5.3 The dried sample is transferred to a dryer containing glue and cooled naturally for 31il. 6 Determination steps
61 Connect the electric pole of the grinding device and first rotate the grinding machine to the standard (mn) grinding time (wi) sieve (4/) general separation time () so that the instrument is strong 2rm)
6.2 Use a fine wool to remove the edges 1 and 2 and grind the inner wall. 6.3 Use a clean weighing bottle, collect the empty bottle weight and weigh it accurately 0.01>, and then use a weighing bottle to weigh the sample in 5.3 (1CC ± 1! 6.4 Start the milling machine, and the mill will run at the preset speed and time. 6.5 After the mill stops rotating, take down the mill and tap it with a wooden stick to make sure the sample is on the bottom of the mill. 6.6 Gently control the wheel to +1, and put all the samples in the mill into a sample sieve with a pore size of 850 μm. Use a fine brush to remove the dust particles in the mill and the cover.
6. Put the sample and the container in the screening box of the abrasion tester, and the bottom of the sample is moved. The sieve is set according to the path of the top. 6.B The sample is stored on the sieve and weighed by the empty scale and the bottle quality plate after grinding (accurate to 0.01g) according to the method of 5.1.
6.9 Treat the sample and calculate the abrasion rate determination result in the same way as 5.5.6, 6.7+6.8. 7 Expression of determination results
7.1 The loss rate expressed as mass white fraction (expressed as W) is calculated according to the formula (1 w.-W.
displacement sample 8
W weigh 7.2 The grinding rate expressed as a percentage of mass (%) is calculated according to formula (2): +
In the formula, when the measurement is carried out in one batch, the sample is separated and the sample is separated. 72
7.3 The effective value of the grinding rate is obtained by direct comparison method, and one decimal place is retained: When the difference is less than 1.%, the determination result is reported as less than 1%.
7.4 The relative difference between the parallel determination standard vehicles is not more than 20. Notes on the standard:
5:. See \ Differences with ASTM4353
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