JB/T 9014.5-1999 Determination of humidity (water content) of bulk materials in continuous conveying equipment

JB/T 9014.5-1999 JB/T 9014.5-1999 Determination of moisture content (water content) of bulk materials in continuous conveying equipment JB/T9014.5-1999 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 bandling equipment
Loose bulk material-Perfortmianceand determination
Continuous bandling equipmentLoose bulk material-Perfortmianceand determination1999-06-28 Issued
National Bureau of Machinery Industry
Implementation on 2000-01-01
JB/T9014.5-1999
This standard is a revision of ZBJ81006.5-8R Determination of moisture content (content) of bulk materials in continuous bandling equipment. When the standard was revised, some revisions were made to the original standard. The main changes were in the technical content. This standard can replace ZB J81006.5-8% from the date of implementation. This standard was proposed and approved by Beijing Hoisting and Conveying Machinery Research Institute. The drafting units of this standard are Beijing Hoisting and Conveying Machinery Research Institute and Real Transportation Machinery Factory. 21
1 Scope
Machinery Industry Standard of the People's Republic of China
Continuous Conveying Equipment
Determinition of Bumidity (Moisture Content) of Bulk Materials This standard specifies the determination method of moisture content (water content) of bulk materials, JB/T9014.5—1999
代#7B81006.:
This standard is applicable to the determination of moisture content (water content) of bulk materials with a diameter of -50mm delivered by continuous conveying equipment. 2. The following standards contain provisions that are quoted in this standard or are the meaning of this standard. When this standard is revised, the following standards are valid and all standards will be revised: When using non-standard services, the latest version of the following standards may be used as a reference: 14.1 1999 Terminology and classification of granular materials for continuous feeding equipment 9014.2—[999 Continuous feeding equipment Test methods for physical properties of granular materials · Specification 3 Key points of the method
After the bulk material is dried under certain test conditions, the moisture content of the sample can be measured: the quality of the sample after operation is expressed as a percentage, which is used as the moisture index of the bag material. 4 Apparatus and reagents
Box: Equipped with a blower, which has a temperature adjustment device of 0~200℃, and can automatically cool the temperature within 2 meters. A mercury thermometer with a temperature range of 0-200℃ is used. The mercury ball is located 2-2.5cm above the middle plate in the box: hF flat plate: Sensitivity D.tc1g:
c Ordinary flat plate: Sensitivity 18
Dry film: Color change inside;
e) Scale: Aluminum (or stainless) cover. The cover of the dish is coded, dried, weighed, and the following 1-layer container is used: the first diameter is 50mm, the height is 3Umm
5 Test steps
5. Test steps
For the samples sent to the laboratory, the material with a tensile strength less than or equal to .5mm shall not be less than 20%; the material with a tensile strength of 0.5-20 shall not be less than 3000: the material with a tensile strength greater than 20mm shall not be less than 10, and the material shall be equipped with a ground plug or double-layer plastic, sealed
5.2 Determination of the width of the material with a particle size less than or equal to 0.5mm approved by the State Machinery Industry Bureau on June 28, 1999 2
200 -01 Implementation
JR/T9014.5—1999
) Transfer 20-30g of sample (accurate to 0.001g) and place it in a dry constant weight weighing plate, spread the sample evenly on the bottom of the bottle, weigh the mother bottle with the sample on it, take out the bottle cap and weigh it until it reaches the validity period. Cover the weighing pan with the inner drain pipe at 100~10℃, take out the bottle cap, place it in a dry and cold place to actual temperature, weigh it repeatedly for 30min (accurate to 0.001) and cool it. Weigh until constant weight (the difference in mass between two weighings is greater than 0.004, and the wet wave determination step for particles with a particle size greater than 0.5-20mm) Weigh the sample: 00g (accurate to) Place it in a constant weight filter and make the sample spread evenly on the filter surface. b) Put the sample into an oven and bake it in a temperature range of 1WW-110 for 15-2h, cool to room temperature, and weigh (accurate to) c! React for 30 minutes, cool, and weigh until constant weight (the difference between the two weighing pans is not greater than 15.4. For the humidity measurement of particles with a particle size of more than 20 mm, step a) weigh 3000 g of the sample (accurate total 5 g), place it in the existing weighing space, and make the sample evenly distributed on the surface. b) Place the weighing pan containing the sample in a confined box and keep it in a temperature range of "00-110" for 2 hours. Cover and cool to room temperature. Measure (accurate to) 6 results. Calculate humidity! Water content) Formula (1) Select the least (accurate to the second decimal place): W ml -mz x 100%.
In the formula: Humidity 1 Moisture content %:
--The sum of the mass of the sample and the weighing bottle (or weighing back) after baking, A: --The sum of the mass of the sample and the weighing bottle [or weighing back] after baking, B: --The mass of the base (or weighing blood), Fruit evaluation
Take the arithmetic mean of the results of two parallel tests. When the difference between the two measured results is less than the allowable value, 0.16-bzxZ.net
When FW<05%:
n.2%-05%% when 10%:
1.%≤3.0%
0.5%-3.0%.
8 Test report
Submit the test report of No. 3.6 in January T914.7-1999 {)
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