GB/T 24891-2010Determination of particle size for compound fertilizers (English PDF)

4.1

test sieve (GB/T 6003.1-1997R40/3 series). a pore diameter of 1.00mm, 4.75mm or 3.35mm, 5.60mm of

Sieve, with lid and chassis;

4.2 Balance

a sense of the amount of 0.5g;

4.3

sieve shaker.

Step 5 Analysis

Depending on the size of the pellets, the sieve by 1.00mm, 4.75mm or 3.35mm, 5.60mm folded sequentially mounted on the chassis, said

Take prescribed by GB 15063 and dividing laboratory samples of approximately 200g (accurate to 0.5g), were placed 4.75mm or 5.60mm sieve

On the cover screen cover, placed on the sieve shaker, sieve clamping lid, shaking 5min, or manual screening. Weighing 1.00mm ~ 4.75mm or

3.35mm ~ 5.60mm between the sample (accurate to 0.5g), caught in the meshes of the sample is not made through the sieve.

Calculation results of the analysis of 6

Size w1, to a particle size 1.00mm ~ 4.75mm or 3.35mm ~ 5.60mm sample of the total sample mass fraction, the number of

Value in%, according to equation (1).

w1 = m1 m × 100 (1)

Where.

m1 --- 1.00mm ~ 4.75mm or 3.35mm ~ 5.60mm quality sample values between units of grams (g);

Numerical m --- sample mass, in grams (g).

Calculation result to one decimal place.

GB 18382-2021 | GB/T 22923-2008 | GB/T 22924-2008 | GB/T 47386-2026 | GB/T 19203-2026 | GB/T 24890-2010 | […]