CN100357233C - High-strength emulsified explosive and production process thereof - Google Patents
High-strength emulsified explosive and production process thereof Download PDFInfo
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- CN100357233C CN100357233C CNB2006100395355A CN200610039535A CN100357233C CN 100357233 C CN100357233 C CN 100357233C CN B2006100395355 A CNB2006100395355 A CN B2006100395355A CN 200610039535 A CN200610039535 A CN 200610039535A CN 100357233 C CN100357233 C CN 100357233C
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- Prior art keywords
- water
- explosive
- crystalline form
- modifying agent
- ammonium nitrate
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- 239000002360 explosive Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000007800 oxidant agent Substances 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 229920002521 macromolecule Polymers 0.000 claims description 21
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 9
- 229920002367 Polyisobutene Polymers 0.000 claims description 7
- 229960002317 succinimide Drugs 0.000 claims description 7
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical group [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- -1 alkali metal salts Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 229940001516 sodium nitrate Drugs 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 abstract description 22
- 230000001235 sensitizing effect Effects 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 2
- 239000003607 modifier Substances 0.000 abstract 2
- 239000008346 aqueous phase Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 14
- 238000005474 detonation Methods 0.000 description 9
- 238000004945 emulsification Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 7
- 238000005422 blasting Methods 0.000 description 7
- 239000000084 colloidal system Substances 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 235000010288 sodium nitrite Nutrition 0.000 description 7
- 238000004880 explosion Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Abstract
The present invention discloses a high-strength emulsion explosive and the production method thereof. The high-strength emulsion explosive is composed of 78.8 to 87 wt% of ammonium nitrate, 0 to 5 wt% of auxiliary oxidizer, 6 to 11 wt% of water, 3 to 5 wt% of composite wax, 2 to 3 wt% of high molecular emulsifying agent and 0.1 to 0.5 wt% of crystal form modifier. The preparation method comprises the following steps that an aqueous phase composed of the oxidant salt, the water and the crystal form modifier and an oil phase composed of the compound wax and the emulsifier are stirred at high speed to form water-in-oil type emulsoid, an amount of rapid sensitizing agent is added after the water-in-oil type emulsoid is cooled to 50 to 60 DEG C, and then a finished product is made. The high-strength emulsion explosive has the advantages of high explosive power and safe production process. Intermittent production, semicontinuous production and complete continuous production can be carried out.
Description
Technical field
The present invention relates to a kind of emulsion explosive, particularly relate to a kind of high-strength emulsified explosive, can be used for the emulsion explosive that the quick-fried industry explosive production of people producer is used to produce high-power, this emulsion explosive can be extensive use of in engineering explosion.
Background technology
The quick-fried industry of China people has been succeeded in developing bulking ammonium nitrate explosive, powdery emulsifying explosive in succession having done a large amount of work aspect the research of TNT-free explosive.Bulking ammonium nitrate explosive is because explosive density is on the low side, and its result of use is undesirable always; Though the powdery emulsifying explosive blasting effect is better, has little scope for one's talents equally at blasting hole with water.
Emulsion explosive is owing to contain a large amount of water, and it is low to have a mechanical sensitivity, and the detonation speed of response is fast, water resisting property is strong, and characteristics such as storage, transportation safety have been brought into play significant effect for many years in the explosion of blasting hole with water.But because emulsion explosive power (about power 280) on the low side is relatively poor in general rock blasting borehole blasting effect, cause blasting cost higher relatively, the user is difficult to accept.The promotion and application of emulsion explosive in blasting works have been restricted.Although emulsion explosive has many advantages, but share of market is confined to about 15% of explosive total amount for many years, if the power of emulsion explosive can be brought up to the level of powder type explosive, and cost is lower than powdery ammonium ladder detonator, the share of market of emulsion explosive will be greatly improved.
Chinese patent CN1120824C discloses a kind of high-strength emulsified explosive and manufacture method thereof, the explosive strength that this patent is made is apparently higher than common emulsion explosive, its weak point is: the water temperature requirement is heated to 110～140 ℃, the oil phase temperature also needs to be added to 110～140 ℃, the emulsification rotating speed is up to 4500rpm, danger is bigger, causes security incident easily.
Summary of the invention
Purpose of the present invention is exactly at the above-mentioned defective that exists in the prior art, and a kind of power height, production process safety, high-strength emulsified explosive with low cost are provided.
For realizing the present invention's purpose, high-strength emulsified explosive of the present invention is achieved through the following technical solutions.
The component of high-strength emulsified explosive of the present invention comprises ammonium nitrate, secondary oxidizer salt, water, macromolecule emulsifier, crystalline form modifying agent, and the each component content range is:
Ammonium nitrate 78.8%-87% (weight);
Secondary oxidizer salt 0%-5% (weight);
Water 6%-11% (weight);
Compound wax 3%-5% (weight);
Macromolecule emulsifier 2%-3% (weight);
Crystalline form modifying agent 0.1%-0.5% (weight);
Described secondary oxidizer salt is SODIUMNITRATE or saltpetre; Described macromolecule emulsifier is a kind of in single polyisobutene succinimide, double focusing iso-butylene succimide or the poly iso-butylene succimide; Described crystalline form modifying agent is C
12-C
16Sulfonic acid alkali metal salts, C
3-C
8The mixture that polyvalent alcohol and amino-acid compound are formed.
Described crystalline form modifying agent consumption is good with 0.3%-0.5% (weight).
Also comprise an amount of sensitizing agent in the high-strength emulsified explosive component of the present invention.
The preparation method of high-strength emulsified explosive of the present invention is:
The water that ammonium nitrate, secondary oxidizer salt, water, crystalline form modifying agent are formed is heated to 90 ℃～110 ℃; The oil phase that compound wax, macromolecule emulsifier are formed is heated to 80 ℃～90 ℃; The oil phase that water and compound wax, the emulsifying agent of ammonium nitrate, secondary oxidizer salt, water, crystalline form modifying agent composition are formed forms water in oil emulsoid under high-speed stirring; Emulsoid is cooled to 50 ℃～60 ℃, adds an amount of sensitizing agent and get product.
Described stirring velocity is advisable with 1800～2900rpm.
This explosive both can be interrupted production, also can semicontinuous, full serialization production.
Principle of the present invention is that the crystalline form modifying agent of a spot of by adding (less than 0.5%) reduces the water melting temperature, thereby under the considerably less situation of water content, still keep normal water preparation temperature, reach the purpose that improves capacity for work, generally speaking, water content is very few, capacity for work can improve, but the easy crystallization of explosive of preparation, storge quality is poor, add the crystalline form modifying agent, can suppress the crystallization of ammonium nitrate, even the water crystallization point is lower under the very low situation of water content, thereby reach the raising capacity for work, improve the purpose of storge quality.
The present invention has following advantage compared with prior art:
1. compare with common emulsion explosive, capacity for work can improve 20%, and cost is suitable with common emulsion explosive;
2. compare with existing high-strength emulsified explosive, production process is safer, and the water melting temperature is lower than 110 ℃, 110～140 ℃ of existing high-strength emulsified explosive water melting temperatures;
3. compare with No. two rock explosives, do not contain poisonous composition, material cost is per ton saves 300～400 yuan;
4. starting material wide material sources, the production technique variation both can be interrupted production, but also continuous production;
5. storge quality is good, can reach 1 year, and water resisting property is good, is particularly suitable for hard rock and the water hole explosion is arranged.
Embodiment
For further describing the present invention, high-strength emulsified explosive of the present invention and preparation method thereof is further described below in conjunction with embodiment.
Embodiment 1
Get the explosive component and be (weight %) ammonium nitrate 853kg (85.3%), water 80kg (8%), compound wax 40kg (4%), macromolecule emulsifier list polyisobutene succinimide 20kg (2%), crystalline form modifying agent 3kg (0.3%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 110 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 90 ℃, be that emulsification forms the water-in-oil-type emulsoid on the tinuous production of 1800rpm at the emulsor rotating speed, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Embodiment 2
Get the explosive component and be (weight %) ammonium nitrate 870kg (87%), water 60kg (6%), compound wax 43kg (4.3%), macromolecule emulsifier list polyisobutene succinimide 20kg (2.0%), crystalline form modifying agent 3kg (0.3%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 100 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 90 ℃, (emulsor rotating speed 1800rpm) emulsification forms the water-in-oil-type emulsoid on tinuous production, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Embodiment 3
Get the explosive component and be (weight %) ammonium nitrate 788kg (78.8%), SODIUMNITRATE 50kg (5%), water 90kg (9%), compound wax 43kg (4.3%), macromolecule emulsifier double focusing iso-butylene succimide 22kg (2.2%), crystalline form modifying agent 3kg (0.3%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 100 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 90 ℃, (emulsor rotating speed 1800rpm) emulsification forms the water-in-oil-type emulsoid on tinuous production, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Embodiment 4
Get the explosive component and be (weight %) ammonium nitrate 825kg (82.5%), saltpetre 30kg (3%), water 78kg (7.8%), compound wax 40kg (4.0%), macromolecule emulsifier poly iso-butylene succimide 20kg (2.0%), crystalline form modifying agent 3kg (0.3%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 100 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 90 ℃, (emulsor rotating speed 1800rpm) emulsification forms the water-in-oil-type emulsoid on tinuous production, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Embodiment 5
Get the explosive component and be (weight %) ammonium nitrate 810kg (81%), water 110kg (11%), compound wax 50kg (5.0%), macromolecule emulsifier list polyisobutene succinimide 25kg (2.5%), crystalline form modifying agent 1kg (0.1%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 90 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 80 ℃, at emulsor rotating speed 2700rpm is that emulsification forms the water-in-oil-type emulsoid on the tinuous production, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Embodiment 6
Get the explosive component and be (weight %) ammonium nitrate 846kg (84.6%), water 85kg (8.5%), compound wax 30kg (3.0%), macromolecule emulsifier list polyisobutene succinimide 30kg (3.0%), crystalline form modifying agent 5kg (0.5%).The water that ammonium nitrate, water, crystalline form modifying agent are formed is heated to 100 ℃, the oil phase that compound wax, macromolecule emulsifier are formed is heated to 90 ℃, at emulsor rotating speed 2700rpm is that emulsification forms the water-in-oil-type emulsoid on the tinuous production, colloid is cooled to 50～60 ℃, sodium nitrite solution, the acid solution (phosphoric acid, acetic acid or nitric acid) that adds continuously made sensitizing agent respectively, add-on is respectively 2kg, meter 4kg (0.4%), prepare the 1000kg emulsion explosive, be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Comparing embodiment (common emulsion explosive)
Get the explosive component and be (weight %) ammonium nitrate 856kg (85.6%), water 40kg (8%), compound wax 40kg (4.0%), macromolecule emulsifier list polyisobutene succinimide 20kg (2.0%), with ammonium nitrate, the water that water is formed is heated to 100 ℃, compound wax, the oil phase that macromolecule emulsifier is formed is heated to 90 ℃, (emulsor rotating speed 1800rpm) emulsification forms the water-in-oil-type emulsoid on tinuous production, colloid is cooled to 50～60 ℃, the continuous respectively sodium nitrite solution that adds, acid solution (phosphoric acid, acetic acid or nitric acid) make sensitizing agent, add-on is respectively 2kg, meter 4kg (0.4%), be packaged into the powder stick that diameter is 32mm, the detonation property such as the table 1 of test explosive.
Table 1
| Sequence number | Explosion velocity (m/s) | Induced detonation (cm) | Brisance (mm) | Capacity for work (ml) |
| Embodiment 1 | ?5102 | ?8 | ?17.80 | ?340.5 |
| Embodiment 2 | ?5000 | ?8 | ?18.00 | ?346 |
| Embodiment 3 | ?4885 | ?7 | ?15.92 | ?328 |
| Embodiment 4 | ?4895 | ?7 | ?15.87 | ?320.5 |
| Embodiment 5 | ?5003 | ?7 | ?16.20 | ?320.3 |
| Embodiment 6 | ?5050 | ?8 | ?16.95 | ?331 |
| Comparing embodiment | ?5000 | ?5 | ?16.58 | ?/ |
The comparing embodiment sample stores three months and just loses cap-sensitivity, and remaining sample storge quality surpasses six months, and embodiment 1 was above 1 year.
Claims (3)
1. a high-strength emulsified explosive is characterized in that comprising ammonium nitrate, secondary oxidizer salt, water, macromolecule emulsifier, crystalline form modifying agent, and its each component content (weight %) scope is:
Ammonium nitrate 78.8%-87%;
Secondary oxidizer salt 0%-5%;
Water 6%-11%;
Compound wax 3%-5%;
Macromolecule emulsifier 2%-3%;
Crystalline form modifying agent 0.1%-0.5%;
Described crystalline form modifying agent is C
12-C
16Sulfonic acid alkali metal salts, C
3-C
8The mixture that polyvalent alcohol and amino-acid compound are formed.
2. high-strength emulsified explosive as claimed in claim 1 is characterized in that: described crystalline form modifying agent consumption is 0.3%-0.5%.
3. high-strength emulsified explosive as claimed in claim 1 or 2 is characterized in that: described secondary oxidizer salt is SODIUMNITRATE or saltpetre; Described macromolecule emulsifier is a kind of in single polyisobutene succinimide, double focusing iso-butylene succimide or the poly iso-butylene succimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100395355A CN100357233C (en) | 2006-04-14 | 2006-04-14 | High-strength emulsified explosive and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100395355A CN100357233C (en) | 2006-04-14 | 2006-04-14 | High-strength emulsified explosive and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837163A CN1837163A (en) | 2006-09-27 |
| CN100357233C true CN100357233C (en) | 2007-12-26 |
Family
ID=37014695
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|---|---|---|---|
| CNB2006100395355A Withdrawn - After Issue CN100357233C (en) | 2006-04-14 | 2006-04-14 | High-strength emulsified explosive and production process thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328099B (en) * | 2008-08-04 | 2011-05-04 | 耿一平 | Gel type emulsion explosive and preparation thereof |
| CN102744003B (en) * | 2012-06-28 | 2014-08-06 | 广东振声科技股份有限公司 | Liquid composite wax and emulsifier automatic batching system and production process |
| CN102875264A (en) * | 2012-10-15 | 2013-01-16 | 福建省民爆化工股份有限公司 | Method for regulating state of emulsion matrix and improving quality and performance of product |
| CN111333473A (en) * | 2020-03-10 | 2020-06-26 | 攀枝花学院 | High and low temperature resistant emulsion explosive and preparation method thereof |
Citations (6)
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|---|---|---|---|---|
| CN1085202A (en) * | 1993-09-29 | 1994-04-13 | 北京矿冶研究总院(贯荔) | Powdery emulsifying explosive and preparation method thereof |
| CN1137507A (en) * | 1996-04-19 | 1996-12-11 | 北京科技大学 | Solid state emulsified compound granular explosive and its preparation method |
| CN1275557A (en) * | 2000-07-05 | 2000-12-06 | 东南大学 | Powder emulsified explosive for coal mine and productive method thereof |
| CN1336355A (en) * | 2000-08-02 | 2002-02-20 | 南京理工大学 | Coal mine allowable powdered emulsified explosive and its production process |
| CN1566039A (en) * | 2003-06-12 | 2005-01-19 | 南京理工大学 | Rock powder shaped emulsion explosive and manufacturing method thereof |
| US6929707B2 (en) * | 2000-11-02 | 2005-08-16 | The Lubrizol Corporation | Stabilized energetic water-in-oil emulsion composition |
-
2006
- 2006-04-14 CN CNB2006100395355A patent/CN100357233C/en not_active Withdrawn - After Issue
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085202A (en) * | 1993-09-29 | 1994-04-13 | 北京矿冶研究总院(贯荔) | Powdery emulsifying explosive and preparation method thereof |
| CN1137507A (en) * | 1996-04-19 | 1996-12-11 | 北京科技大学 | Solid state emulsified compound granular explosive and its preparation method |
| CN1275557A (en) * | 2000-07-05 | 2000-12-06 | 东南大学 | Powder emulsified explosive for coal mine and productive method thereof |
| CN1336355A (en) * | 2000-08-02 | 2002-02-20 | 南京理工大学 | Coal mine allowable powdered emulsified explosive and its production process |
| US6929707B2 (en) * | 2000-11-02 | 2005-08-16 | The Lubrizol Corporation | Stabilized energetic water-in-oil emulsion composition |
| CN1566039A (en) * | 2003-06-12 | 2005-01-19 | 南京理工大学 | Rock powder shaped emulsion explosive and manufacturing method thereof |
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| CN1837163A (en) | 2006-09-27 |
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Assignee: Anhui Dun'an Civil Blasting Equipment Co., Ltd. Assignor: Anhui Dun'an Chemical Industry Group Co., Ltd. Contract fulfillment period: 2008.5.20 to 2014.5.19 Contract record no.: 2009340000141 Denomination of invention: High-power emulsion explosive and preparation method thereof Granted publication date: 20071226 License type: Exclusive license Record date: 20090728 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20071226 Effective date of abandoning: 20211214 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20071226 Effective date of abandoning: 20211214 |