JB/T 9014.2-1999 JB/T 9014.2-1999 General provisions for test methods of physical properties of bulk materials in continuous conveying equipment JB/T9014.2-1999 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
1999-06-28 Issued
National Bureau of Machinery Industry
Implementation on 2000-01-01
JB/T 9014.2-1999
This standard is a revision of 2BJ81006.2--88 General provisions for tidal performance test of fine material in continuous conveying equipment, and the original standard has been revised and the technical content has changed. This standard is implemented in accordance with ZEJS1006.2-88. This standard is proposed by Beijing Hoisting and Conveying Machinery Research Institute. The draft standard is: Beijing Hoisting and Conveying Machinery Research Institute, Yidu Hoisting Machinery Research Institute. Machinery Industry Standard of the People's Republic of China Www.bzxZ.net
Continuous handling equipment
General rules for test methods for physical properties of bulk materials performance1 Scope
JB/T9014.2—1999
Original version JH0G.2—88
This standard specifies the general provisions of the physical (or mechanical) performance test method, sampling method and attention frequency of bulk materials transported by continuous conveying equipment
This standard applies to the determination of the physical (or mechanical) properties of bulk materials transported by continuous conveying equipment. 2 Cited standards
The texts contained in the following standards constitute the provisions of the standards through reference in the standards. When this standard is published, the versions shown are all valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. JB. Ting 9014.1—19g) Continuous auxiliary equipment bulk material performance terms and classification 3 General provisions
3.! The error specified in the test method is only to ensure the accuracy requirements of the design, manufacture and use of continuous feeding equipment in engineering technology.
3.2 The number of decimal places after the analysis result should be consistent with the number of decimal places after the allowable error stated in the test method. 3.3 During the use of the belt, on the premise of ensuring the accuracy of the measuring station, other test methods are not excluded. 3.4 The volumetric surface, balance, scale and other instruments used should be checked for accuracy within the valid calibration period, and should be calibrated regularly according to the actual use and relevant scales and instruments. 3.5 The sample to be dried should be dried in an oven with a temperature of [05±5°C. When the sample is placed in an oven with a temperature of [05°C+5°C and weighed to the value, the time between two consecutive weighings shall not be less than 3: When the difference between the two weighing values ​​is not greater than the accuracy required by the test, it is called the constant weight value. 3. (Each test item shall be accompanied by a corresponding test report, which shall include: a) Test item name; b) Test material name, variety and origin; c) Test result calculation formula, test result calculation and value; d) Test result evaluation; e) Test date and test personnel, etc. Approved by the State Machinery Industry Bureau on June 28, 1999, and implemented on January 1, 2000. 4 Sampling JHT90142-1959 4.1 Samples of surface properties shall be taken from the seeds of the raw materials in the batch. 4.2 The initial sample shall be no less than 10 pieces, and the total material volume shall be no less than 2 times of the test volume (Table 1). 4.3 The initial sample can be selected in the following situations: 1) When the belt test is carried out in the conveying field, the sample shall be drawn in the interval between the batches of the conveying materials. When the material is evenly charged and the transportation is stopped, the width of the material pile and the material transportation equipment can be adjusted within a certain time interval. 2) When sampling from the uniform pile, every 300m (500m\) is a batch, and it is also considered as one batch. The sample can be From the material body, different positions and directions are selected from 10 points at random. We should avoid taking high-protection and surface materials; when taking samples from the bagged materials, we should use 10 different positions and degrees to pull. 4.4 After the samples are mixed, they can be reduced to the required material scale (Table 1) and Table 4 for the test according to the quartering method. tt||Exterior paint inspection angle
Exterior original coefficient
4.5 Method running items
4.5.1 Before sampling, the sampling tools must be cleaned and the surface of the tools must be wiped clean. Application
426-23
4.5.2 The sampled materials should be placed on a clean concrete grading and metal display platform for mixing and shrinking to avoid other objects from getting in the way or blocking the materials
4.5.3 The sampled materials shall not be piled in places exposed to sunlight or strong winds. Mix and reduce to prevent the moisture content of the material from being lost in the air.
4.5.4 The sampled material must maintain its original condition before sampling and must not be artificially crushed during the sampling process. The sampler or other methods that may cause the material to swell should be adopted to obtain the sample.
4.6 Sample containers and labels
4.6.1 The samples with moisture content (including moisture) to be inspected shall be placed in a container with a seal and a label attached. 4.6.2 The samples to be inspected shall be placed in a sample carrier (or sample barrel) and a label attached. 4.6.3 Label: indicate the following items:
8) No.:
b) Product name, grade, production method;
batch number +
d) Transport order number [or production batch number
e) Sampling location, date and weather;
JB/T9014,2—1999
When necessary, the sampling conditions and process, the original data of the sample: requirements, test items, date and pressure,
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