JB/T 9014.3-1999 JB/T 9014.3-1999 Determination of particle size and particle composition of bulk materials in continuous conveying equipment JB/T9014.3-1999 Standard download decompression password: www.bzxz.net

JCS53.040.01
Machinery Industry Standard of the People's Republic of China
JR/T9014.1~9014.9-1999
Continuous conveying equipment
Loose bulk material-Perfortmianceand determinationwwW.bzxz.Net
Continuous bandling equipmentLoose bulk material-Perfortmianceand determination1999-06-28 Issued
National Machinery Industry Bureau
Implementation on 2000-01-01
JB.T914.3-199g
This standard is a revision of 7.181006.388 Determination of sensitive materials and components of continuous conveying equipment. During the revision, the original standard was edited, but the content did not change. This standard shall be revised and unified from the date of implementation of this paragraph. Drafting units of this standard: Beijing Heavy Duty Conveyor Control Research Institute, Beijing Transportation and Sales Machinery Factory, 1 Scope
Machinery Industry Standard of the People's Republic of China
Continuous handling equipment
Determination of particle size and particle composition of bulk materials Continuous handling cyuipment-Louse bulk malerial-Heterrninalinn of enmpnsitian ofsizeandpellet This standard specifies the machine size and particle composition of bulk materials. [R/T 9014.3-1999
Replacement 181 n0.182
This standard is applicable to 1 Determination of particle size and particle composition of materials with a particle size greater than 0.05mm delivered by continuous conveying equipment. 2 Referenced standards
The provisions of the standards are included in the references in this standard. The versions shown are valid for all versions of this standard. The versions mentioned above will be revised. All parties to this standard shall use the latest versions of the following standards: GRT 679-104
Chemical reagent Ethanol (95%)
4.19 Specification for performance of fine particles in continuous conveying equipment and its content 14.2-1999 Physical properties of fine particles in continuous conveying equipment 3. Method
The particle size and particle composition of the material shall be determined by sieving method. Screening method is to let the materials left on the sieve pass through the standard sieve with a certain diameter under certain test conditions, and then calculate the total quality of the materials and the original samples, and then find out the performance indicators such as the graded particles percentage and typical particle size. The particle size and particle composition of the particle size less than 5-1% shall be determined by the 10-screen method, and the particle size smaller than 1.5mm shall be determined by wet screening or wet screening.
4 Instruments, tools and reagents
8) Screening box: Maximum working temperature 200T, with automatic temperature and wind device: h) Total weight: Weighing 10kg (sensitivity 5e piece
Large tray: Weighing tkg (sensitivity 0.01g): e) Standard:
Reading sieve for screening materials, with sieve seat, The sieve is sized in the following ways: 80.0, 70.0, 60.0, 50.0, 40.0, 10.0, 25.0, 20.0, 5.0, 10.0, 5.0, 0.2.50 mm. The round hole sieve (or hole sieve) for screening egg materials must have a sieve bottom sieve seat, and the sieve diameter (or reverse length) is: National Machinery Industry Cylinder 1999-06-28 approved by the country
200n-01-01 implementation
JB/T9014.3—1999
10.0.5.00.2.50,1.25.0.630,0.31s, 0.16, 0.104, 0.074. 0.061, 0.644mm.d）Vibrating filter screen machine:
Evaporation flame washing bottle;
Equalizing porcelain snail: 30ml.:
g dryer: filled with color changing glue;
h wool:
Art: chemically pure (679
5 Test steps
5.1 Dry method
According to B14.2-19, 1, each sample is reduced: 5) The prepared sample is placed in an oven and dried to constant weight. Divide the dried sample into 1 or 2 parts, and weigh the mass of each part: the sieve is arranged in order of aperture size, and the smaller one is the lower one, and attached to the bottom of the lung. Put eight samples into the upper sieve, close the sieve cover, and sieve with a sieve cap until the remaining material on the sieve is 1% per minute. After collecting, use your hands to sieve until the minimum remaining material is less than 1% per minute. Weigh the mass of the material on each sieve (accurate material: 5g, fine material: accurate to 0.g) 5.2 Wet sieving method a) Place 51 samples of the red material in an oven for drying. Take the dry sample first and sieve it with a standard sieve with a random diameter of U.63mm. When the sieve is not balanced, the material should be transferred to the test wire. The standard material mass and the pass rate should be 0.0tg.
b) The material after sieving is evenly divided into 6 portions (each not less than 400m), and the weight of each portion of the material sample is weighed (accurate to 0.01g);
) The portions of material on the weighing table are divided into 6 portions with specified effect, and the standard sieve is adjusted by gently shaking. The sample is evenly spread on the sieve:
mountain) Moisten the sample with suitable ethanol. Turn on the water drip and control the water pressure to 5%, so that the sample is completely wetted (no material is allowed to splash out). Control the water flow to 20Pa and rinse the sample until the material in the standard sieve does not pass through the sieve holes. Use the distillation bottle to carefully transfer all the retained materials in the standard sieve to the porcelain city that has been weighed in advance. Place the porcelain on a temperature-controlled electric furnace and evaporate it completely (no water is allowed to come out). Dry the porcelain in a vortex box and weigh it. After cooling in a drying room, weigh the porcelain and the retained aggregate in it (accurate to 0.0g).
6 Calculation of results
6.1 Calculate the graded distribution percentage according to formula (1) and formula (2) ( (Accurate to the second decimal place) T-screening method:
2±100%
Wherein: a-.
Calculate the total white content, %;
JB/T9014.3—1999
The first: The mass of the material retained on the sieve, 3
The total mass of the material sample for the first screening test, g, wet screening method:
Formula. Calculate the grading percentage, %,:
8.·Usually (The mass of the material retained on the sieve, g: S.
The hole is lighter than the first, and the mass of the material on the sieve with a larger hole is: and; The mass of each material sample for the screening test is recorded, -G, -G
α..,=G,..-G.
virtual installation! The quality of the aggregate on the test and the quality of the materials in the ceramic pieces; where: G·
blue installation No. 1-1 decoration on the ceramic end and the quality of the materials in the ceramic end, name;, the quality of the ceramic end of the material retained on the whole installation! G
some installation! -" the quality of the total material retained on the sieve, more, 6.2 cumulative distribution according to the formula (3) or (6) to calculate (accurate to the first decimal point) dry screening method:
where: A cumulative distribution rate, %;
No. / No. of the hole diameter of the sieve and the number of each sieve The total weight of the aggregate retained on the sieve is: the total mass of the material sample for the screening test, and the gradation percentage is obtained by the following method: %: 4-G-GL×100% G—the mass of the aggregate retained on the No. 1 sieve and the mass of the aggregate retained on the sieve, G—the mass of the sieve containing the aggregate retained on the No. 1 sieve: gz. The total weight of each sample for the screening test is: 1. The gradation percentage is calculated by the cumulative gradation percentage, and the material gradation curve is drawn and the typical particle size is determined. Test report: Test report according to the requirements of 3.6 of JB/[9014.21999. 15
· (4)
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