This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. of industrial powdered ammonium nitrate explosives. This standard is applicable to powdered mixed explosives with ammonium nitrate and TNT as the main components. GB 12437-2000 Industrial powdered ammonium nitrate explosives GB12437-2000 standard download decompression password: www.bzxz.net

GB 12437-2000
This standard is a revised version of GB/T12437-1990 "Industrial Powdered Ammonium-Titanium Explosives". Compared with the previous version, the main technical content changes include:
In order to be consistent with GB/T12436-1990 "Explosive Performance Test Lead Method", the performance of each explosive is revised to the performance value in the original standard minus 22mL; the detonation velocity index is changed from the original standard that only measures at the time of "finalization" to at least once every ten batches; the toxic gas content and methane safety of coal mine explosives are supplemented; the different requirements for factory inspection and type inspection are clarified. This standard will replace GB/T12437-1990 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed by China Ordnance Industry Corporation. This standard is under the jurisdiction of China Ordnance Industry Standardization Research Institute. This standard was drafted by: Liaoning Qingyang Chemical Industry Company, China Ordnance Industry Standardization Research Institute. The main drafters of this standard are: Li Youliang, Yang Jinxia. 769
1 Scope
National Standard of the People's Republic of China
Industrial powdery explosives containedammonium nitrate and trinitrotoluene
Industrial powdery explosives containedammonium nitrate and trinitrotolueneGB 12437—2000
Replaces GB/T12437-1990
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. of industrial powdery explosives containedammonium nitrate and trinitrotoluene (hereinafter referred to as ammonium nitrate and trinitrotoluene explosives).
This standard is applicable to powdery mixed explosives with ammonium nitrate and trinitrotoluene as the main components. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T10111-1988 Method for random sampling using random numbers GB/T12436-1990 Lead method for testing the working capacity of explosives GB/T12438-1990 Test method for industrial powdered ammonium nitrate explosives GB/T12440-1990 Lead column compression method for testing the strength of explosives GB/T13228-1991 Determination of detonation velocity of industrial explosives GB14493-1993 Packaging of industrial explosives GB/T17582-1998 Classification and naming rules for industrial explosives GB18097-2000 Test method and determination of safety of combustible gas of permissible explosives in coal mines GB18098-2000 Determination of toxic gas content after explosion of industrial explosives The raw material standards cited in this standard are shown in Appendix A (Appendix to the standard). 3 Requirements
3.1 Classification and naming
3.1.1 Classification
Ammonium nitrate explosives are classified into three categories according to their scope of use: open-pit ammonium nitrate explosives, rock ammonium nitrate explosives and coal mine permitted ammonium nitrate explosives; according to their water resistance, they are classified into two categories: ordinary ammonium nitrate explosives and water-resistant ammonium nitrate explosives. Open-pit ammonium nitrate explosives are suitable for open-pit blasting projects; rock ammonium nitrate explosives are suitable for open-pit and underground blasting projects without the danger of methane and mine dust explosions; coal mine permitted ammonium nitrate explosives are suitable for coal mine blasting projects with the danger of methane or coal dust explosions; water-resistant ammonium nitrate explosives are suitable for blasting projects with general water operations
3.1.2 Naming
Ammonium nitrate explosives are named in accordance with the provisions of GB/T17582. 3.2 Technical requirements
3.2.1 Components
National Quality and Technical Supervision Department 2000-05-09 approved 770
2000-07-01 implementation
GB12437 -2000
The component content of ammonium nitrate explosives shall meet the requirements of Table 1 Table 1 Component content of ammonium nitrate explosives
Explosive name
No. 1 open-pit ammonium nitrate explosive
No. 2 open-pit ammonium nitrate explosive
No. 2 water-resistant open-pit ammonium nitrate explosive
No. 3 open-pit ammonium nitrate explosive
No. 2 rock ammonium nitrate explosive
No. 2 water-resistant rock ammonium nitrate explosive
No. 3 rock ammonium nitrate explosive
No. 4 water-resistant rock ammonium nitrate explosive
No. 2 coal mine permitted ammonium nitrate explosive
No. 2 water-resistant coal mine permitted ammonium nitrate explosive
No. 3 coal mine permitted ammonium nitrate explosive
No. 3 water-resistant coal mine permitted ammonium nitrate explosive
Ammonium nitrate
80.0~84. 0
84. 0~88. 0
84.0~88. 0
86.0~90.0
83.5~86.5
83.5~~86.5
80.5~83.5
77. 7~80. 7
69.5~72.5
70.5~73.5
65.5~~68.5
65.5~68.5
TNT
10. 0~~12. 0
10.5~~11. 5
13.0~15.0
18.5~21.5
9. 5~~10. 5
9.5～10.5
9. 5~~10. 5
It is allowed to add no more than 0.5% of additives in addition to the explosive components. 1
2Wood flour can be replaced by bagasse powder or cottonseed cake powder. Component content
2. 7~～3. 7
1. 7～2. 7
14.0~16. 0
14.0~16.0
19.0~~21.0
19.0~21,0
Water repellent
0, 6~1. 0
3The core charge of the ammonium nitrate explosive permitted in the coal mine is the ammonium nitrate explosive permitted in No. 2 and No. 3 coal mines or the ammonium nitrate explosive permitted in the water-resistant coal mines, and the salt content in the barrel is 45%~50% of the core charge.
4The water repellent is generally a mixture of asphalt and paraffin (mass ratio is 1:1). If other water repellents are used, they must be technically identified before use. 3.2.2 Raw materials
The main raw materials for manufacturing NT-NT explosives shall generally meet the requirements of the standards listed in Table 2. Other raw materials with performance not lower than the corresponding standards may also be used.
Table 2 Raw materials for manufacturing NT-NT explosives
Raw material name
Ammonium nitrate
TNT
3.2.3 Performance
The performance indicators of NT-NT explosives shall meet the requirements of Table 3. Conform to standards
GB2945
WJ9029-1999, Grade I and II
GB5462
GB/T254
GB/T 494
Name of explosives
No. 1 open-pit ammonium-titanium explosive
No. 2 open-pit ammonium-titanium explosive
No. 2 water-resistant natural ammonium-titanium explosive
No. 3 open-pit ammonium-titanium explosive
No. 2 rock ammonium-titanium explosive
No. 2 water-resistant rock ammonium-titanium explosive
No. 3 rock ammonium-titanium explosive
No. 4 water-resistant rock ammonium-titanium explosive
No. 2 coal mine permitted ammonium-titanium explosive
No. 2 water-resistant coal mine permitted ammonium-titanium explosive
No. 3 coal mine permitted ammonium-titanium explosive
No. 3 water-resistant coal mine permitted ammonium-titanium explosive
Moisture%
GB 12437-2000
Sympathetic explosion distance
Before floodingAfter immersion
1The validity period of explosives starts from the date of completion of manufacturing. ≥4
Performance index of ammonium-titanium explosives
Explosives have
Validity periodSympathetic explosion
Collapse method)
≥278
≥2. 1×10≥228
≥208
≥12|0. 95~|≥3. 2×10≥298
2When testing the explosive performance of ammonium-titanium explosives allowed for use in coal mines, the cylinder is not taken. 3.2.4 Specifications of drug rolls
≥3.3×10≥328
≥3. 5X10/≥338
≥2.6X10≥228
22.5X103/≥218
Explosives produce combustible
toxic gases after explosion
Outer diameter: 32mm±1mm, 35mm±1 mm, 38mm±1mm, 42mm±1 mm (tube explosive). Drug roll mass: 100g±2g, 150g±3g, 200g±5g. If the user needs drug rolls of other specifications, the two parties can negotiate and indicate it in the contract. 4 Test methods
4.1 The components of ammonium nitrate explosives, as well as the determination of moisture, detonation distance, density of the cord, and cord mass shall be carried out in accordance with the provisions of GB/T12438. The detonation distance is allowed to be tested at the specified minimum distance. One of the five cord mass is allowed to fail to meet the requirements, but the average mass must meet the requirements.
4.2 The determination of the intensity shall be carried out in accordance with the provisions of GB/T12440. 4.3 The determination of the detonation velocity shall be carried out in accordance with the provisions of GB/T13228. 4.4 The determination of the working capacity shall be carried out in accordance with the provisions of GB/T12436. 4.5 The determination of the toxic gas content after the explosion of the explosive shall be carried out in accordance with the provisions of GB18098. 4.6 The determination of the safety of combustible gas shall be carried out in accordance with the provisions of GB18097. 5 Inspection rules
5.1 Inspection classification
The inspection of ammonium nitrate explosive products is divided into factory inspection and type inspection. 5.2 Factory Inspection
GB12437 -2000
Products must be inspected by the quality inspection department of the manufacturer. The products shipped should meet the requirements of this standard. Each batch of products shipped should be accompanied by an inspection certificate.
5.2.1 Inspection Items and Test Cycles
a) Each batch should be tested for moisture, detonation distance, density of the cord, outer diameter of the cord, and quality of the cord (the last three items are allowed to be inspected during the production process). Water-resistant explosives should also be tested for the detonation distance after flooding; b) The components should be tested at least once every five batches, and the intensity and detonation velocity should be tested at least once every ten batches. 5.2.2 Batching
Products produced by the 冏-process can be grouped into one batch, and each batch should not exceed 25t. 5.2.3 Sampling
Four packages are selected from each batch, and then one medium package (at least 1kg in bulk) is selected from each package. Then, medicine rolls are selected from each medium package according to the test requirements. Sampling is allowed at different parts of the packaging process. The samples taken should be marked with the product name, batch number, manufacturing date, sampling date, test items and the name of the sampler. 5.2.4 Judgment rules and re-inspection rules
According to the test cycle in 5.2.1, the first batch of the inspection interval is the representative batch of the interval. If the representative batch is qualified in the initial inspection and re-inspection, it is judged to be qualified. If the result of a certain test item in the initial inspection is unqualified, re-inspection can be carried out. If one indicator is still unqualified in the re-inspection, this representative batch is unqualified and should be eliminated from the inspection. The test of this item should be carried out on five consecutive batches after this unqualified batch. If five consecutive batches are qualified, the normal inspection cycle can be restored for sampling. If unqualified products appear again in these five batches, in addition to rejecting this batch, the test of this item shall be carried out on five consecutive batches after the unqualified batch. During the retest, two samples shall be taken from the original sampling package again to retest this item. When the retest results meet the requirements, the item is judged to be qualified.
5.2.5 Relaxation of inspection
When the ammonium nitrate explosives and rock ammonium nitrate explosives for coal mines do not meet the performance index requirements of this type of products, but meet the performance index requirements of open-pit ammonium nitrate explosives, they can be inspected and used as open-pit ammonium nitrate explosives. When the detonation distance of water-resistant ammonium nitrate explosives after immersion in water is unqualified and other performance indicators meet the requirements of non-water-resistant ammonium nitrate explosives, they can be inspected and used as corresponding non-water-resistant ammonium nitrate explosives.
5.3 Type inspection
5.3.1 Type inspection items
Type inspection items include the specifications of the cartridges and all items in Tables 1 and 3. 5.3.2 Timing of type inspection
Type inspection should be carried out in any of the following situations: a) When a new product is finalized and an old product is transferred to another factory for production; b) After formal production, if there are major changes in equipment, materials, and processes that may affect product performance; c) When the product production line is resumed after being shut down for half a year; d) When the national quality supervision agency proposes a type inspection requirement. 5.3.3 Sampling
Samples shall be randomly selected according to the method specified in GB/T10111, and the total amount of samples taken shall not be less than 12kg. 5.3.4 Judgment rules and re-inspection rules
When all the items inspected meet the requirements of this standard, the products submitted for inspection shall be judged to be qualified. If one of the two indicators of toxic gas content and combustible gas safety after the explosion of explosives does not meet the requirements of this standard, the products submitted for inspection shall be judged to be unqualified.
Except for the toxic gas content and combustible gas safety after the explosion of explosives, if more than two (not including two) of the test results do not meet the requirements of this standard, the submitted inspection batch is judged to be unqualified. If one or two test results do not meet the requirements of this standard, the non-compliant items shall be doubled for re-testing. If the re-test results all meet the requirements of this standard, the submitted inspection batch is still judged to be qualified, otherwise it is unqualified.
GB12437—2000
Note: Moisture content and sympathetic detonation distance can be determined according to the requirements of the indicators within the validity period. 6 Marking, packaging, transportation, storage
6.1 Marking
The outer packaging marking of ammonium-titanium explosives shall comply with the requirements of Chapter 5 of GB14493-1993. The surface of the ammonium-titanium explosive roll permitted for coal mines shall be painted with a blue band.
6.2 Packaging
The packaging of ABN explosives is divided into two forms: coil packaging and bulk. Both coil packaging and bulk explosives should be able to be twisted open by hand and not be hard lumps.
6.2.1 Raw materials for packaging
Raw materials for packaging should generally meet the requirements of the standards listed in Table 4. Other raw materials with performance not lower than the requirements of the corresponding standards may also be used. Table 4 Standards for raw materials for packaging
Raw material name
Explosive roll paper
Paper bag paper
Polyethylene plastic
Corrugated paper box
Plastic strapping tape
Plastic woven bag
6.2.2 Explosive roll packaging
6.2.2.1 Explosive roll
Conform to standards
GB/T254
GB/T 7968
GB/T 4456
GB/T 6543
QB/T 3811
GB/T8946
a) The paper tube for the medicine roll is made of explosive roll paper soaked in paraffin and rolled up. The wall of the tube shall be no less than two layers, and wrinkles, warping and damage are not allowed; b) The paper at both ends of the medicine roll shall be tightly folded from no less than three sides, and no medicine shall be trapped or leaked; c) When the medicine roll is sealed with a moisture-proof agent (usually paraffin), moisture-proof agent accumulation is not allowed; d) The amount of paper for every 100g of explosives shall not exceed 2g, and the amount of moisture-proof agent shall not exceed 3.5g (the amount of moisture-proof agent shall be sampled once every ten batches).
6.2.2.2 Middle package packaging
A certain number of medicine rolls shall be arranged neatly, and after moisture-proof treatment at both ends or one end, a layer of paper bag paper or explosive roll paper shall be wrapped outside, and packed in a polyethylene plastic bag, and sealed by vacuum heat to form a middle package. In the same batch, the specifications and number of medicine rolls in each middle package shall be the same. At least five middle packages shall be selected from the packages for immersion test (according to the requirements of GB/T12438) in each shift. The qualified rate shall not be less than 80%. If the package fails, a double retest shall be conducted. If the package still fails, the package shall be repaired. 6.2.2.3 Package
A certain number of middle packages shall be arranged in a corrugated paper box and tied firmly with plastic strapping tape. The paper box shall not be damaged. The net weight of each package of Chinese medicine roll shall not exceed 30kg.
6.2.3 Bulk packaging
Ammonium-titrate explosives shall be packed in plastic woven bags (or sacks) lined with no less than three layers of paper bags and one layer of polyethylene plastic bags. The product must be tightly packed and reliably sealed. The net weight of each package shall not exceed 40kg, and the deviation shall not exceed 1% of the net weight. 774
6.2.4 Packaging inspection
GB 12437--2000
Select 10% of the packages from each batch and inspect the packaging marks according to the requirements of 6.1; inspect the packaging quality according to the requirements of 6.2 (the packaging quality of the drug rolls and the middle package packaging is allowed to be inspected during the production process). The inspected packages should meet the requirements, otherwise the batch of packages shall be 100% inspected, and those that do not meet the requirements shall be repaired
6.3 Transportation
The transportation of ammonium nitrate explosives must be carried out in accordance with the relevant national regulations on the transportation of dangerous goods. 6.4 Storage
Ammonium nitrate explosives must be stored in a well-ventilated dry warehouse. 775
GB 12437—2000
Appendix AWww.bzxZ.net
(Standard Appendix)
Raw material standards cited in this standard
A1 The raw material standards cited in this standard are shown in Table A1. Table A1 Raw material standards
GB/T 254—1998
Semi-refined paraffin
GB/T 494—1998
Building petroleum asphalt
GB 2945---1989
Ammonium nitrate
Standard number and name
GB/T 4456-1996
Polyethylene blown film for packaging
GB5462—1992Industrial salt
GB/T 6543—1986
Corrugated paper box
Paper bag paper
GB/T7968--1996
GB/T 8946—1998
QB/T 3811—1999
QB 362—1982
WJ9029—1999
Plastic woven bag
Plastic strapping tape
Explosive paper roll
Industrial TNT
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