HG/T 2224-1991 Determination of average compressive strength of granular superphosphate HG/T2224-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG2224—91bZxz.net
Determination of Average Compressive Strength of Granular Heavy Superphosphate 1991-11-15 Issued
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1992
W Chemical Industry Standard of the People's Republic of China
Determination of Average Compressive Strength of Granular Heavy Superphosphate 1 Subject Content and Scope of Application
This standard specifies the method for determining the average compressive strength of granular heavy superphosphate. This standard is applicable to the determination of the average compressive strength of granular heavy superphosphate. 2 Reference Standard
HG2223 Determination of Particle Size of Granular Heavy Superphosphate 3 Summary of Method
HG2224—91
Select a certain number of heavy superphosphate fertilizer granules within a specified particle size range, and determine the minimum force required to crush each granule to obtain the average value.
4 Instruments
4.1 Particle strength tester: sensitivity 0.5N; 4.2 Tweezers.
5 Operation steps
Randomly select 30 2.0~2.8mm heavy superphosphate fertilizer granules obtained by HG2223 medium particle size determination, and measure the minimum force required to crush each granule.
6 Result expression
The average compressive strength X of the granules expressed in Newton is calculated as follows: X=
Where: X, the minimum force required to crush each fertilizer granule, N. The result should be expressed to one decimal place.
Additional remarks:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Shanghai Research Institute of Chemical Industry of the Ministry of Chemical Industry. This standard was drafted by the Shanghai Research Institute of Chemical Industry of the Ministry of Chemical Industry and Yunnan Phosphate Fertilizer Factory. The main drafters of this standard are Yin Yongkang, Chen Xuezhi and Xie Ruiming. Approved by the Ministry of Chemical Industry of the People's Republic of China on November 15, 1991 and implemented on July 1, 1992
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