CN103319290A - Low-temperature-resistant high-power coalmine-permitted water-gel explosive and manufacturing method thereof - Google Patents
Low-temperature-resistant high-power coalmine-permitted water-gel explosive and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a low-temperature-resistant high-power coalmine-permitted water-gel explosive and a manufacturing method thereof. The explosive is composed of a methylamine nitrate solution, water, ammonium nitrate, sodium nitrate, formamide, urea, sodium dodecylbenzenesulfonate, sesbania powder, fine atomized aluminum powder, a composite alkali metal halide flame inhibitor, expanded perlite powder, a foam stabilizer and a crosslinking agent. According to the invention, sodium nitrate and sesbania powder are first well mixed; ammonium nitrate is dissolved in water, such that an ammonium nitrate solution is prepared; formamide is dissolved in the methylamine nitrate solution; the three are mixed in an agent mixing tank; the composite alkali metal halide flame inhibitor, the fine atomized aluminum powder, the expanded perlite powder, the foam stabilizer and the crosslinking agent are sequentially added; and the mixture is well mixed and is packaged into sticks. The explosive has high explosion power, and can be normally initiated and detonated under an experimental temperature of 0 DEG C to -20 DEG C. The explosive does not contain toxic component, and does not pollute the environment. The process is simple, and continuous production can be realized.
Description
Technical field:
The present invention relates to a kind of prescription and manufacture method of novel low temperature resistant water gel explosives for mine, it can be more than envrionment temperature-20 ℃ cold district or other low temperature environment under use in the blasting operation, the upper hard above rock use of working face of high Gas Outburst and coal dust explosion hazard is particularly arranged with the blasting procedure fragmentation at low temperatures.
Background technology:
The water resisting property of water gel explosive is strong, density is high, power is large, production and application safety, especially can make minor diameter (50mm is following) powder stick, it is a kind of good mine blasting medication, at present, all be to adopt inertia marble flour (CaCO3) as the flame-cooling agent of explosive to the coal mine gas from explosion reaction basically in China existing three grades and the secondary water gel explosives for mine prescription, but marble flour is to gas, the suppression efficiency of coal dust explosion reaction is low, the corresponding gas safety degree rank of the regulation that is up to state standards, its share of adding in Explosives will be higher, simultaneously at high temperature this material participates in again the detonation reactive absorption explosion energy of explosive, causes the explosion energy of water gel explosives for mine to reduce too much.Safe design according to permitted explosive for coal mine is theoretical, alkali-metal halogenide is the highly efficient depressor of gas combustion decomposition reaction, its flame arrest mechanism is different with marble flour, compare it in the situation that content seldom just can reach corresponding level of security with marble flour, and less to the explosion energy consumption of explosive.Employing high-efficient alkali metal halide flame-cooling agent replaces the inertia marble flour in the water gel explosives for mine prescription, simultaneously the proportioning of other component is adjusted, can satisfy on other basis of water gel explosives for mine gas safety degree level guaranteeing, making explosion energy obtain larger raising.
Water gel explosive are a kind of water base gelling systems; also has moisture; oxygenant ammonium nitrate form with supersaturated solution in explosive exists; the envrionment temperature of using along with explosive reduces; the solubleness of ammonium nitrate can sharply reduce; ammonium nitrate grain can be separated out in body of explosive in a large number, and the ammonium nitrate of separating out generally is the pin column, and is interlaced between the ammonium nitrate grain; the mobile Plasticity Decreasing of whole explosive; contact area reduces between explosive oxidizer and the combustible agent simultaneously, and Impact Initiation sensitivity and the power of explosive significantly reduce, and research data shows; water gel explosive lose the blasting cap initiation sensitivity in the time of-5 ℃, explosive occurs miss-firing and half quick-fried phenomenon.
More about the recipe ratio of water gel explosives for mine both at home and abroad at present, as seen the inventor is as low explosion velocity water gel explosives for mine and the method for making thereof of the first contriver invention, main preparation technology be take methylamine nitrate as sensitizing agent, calcium carbonate is flame-cooling agent, add simultaneously the compound water resistant ammonium nitrate of 3-5mm macrobead and polystyrene plastic ball and reduce explosion velocity of explosive, the permitted explosive for coal mine of the low explosion velocity of preparation, high-power is seen China Patent No. 200610090783.2; The water gel explosives for mine prescription of Pan Zumin etc. invention, principal feature be with NH4Cl as flame-cooling agent, as linking agent, the blast performance of this explosive is good with inorganic high-valency metal salt, the gas safety degree is high, sees Chinese patent 87106268.2; The Tovex water gel explosive prescription of du pont company production adopts water miscible methylamine nitrate as sensitizing agent and combustible agent, and simultaneously with aluminium powder, bubble sensitization, the blast performance of product is good.But also there is not relevant report about low temperature resistant high-power water gel explosives for mine at present.
Summary of the invention:
Realize that technical thought of the present invention is: analysis-by-synthesis has component, manufacture method and the blast performance of one-level, secondary, three grades of water gel explosives for mine now, by blast performance under blast performance, gas safety performance and the low temperature of analyzing influence water gel explosives for mine, find out the approach that under the prerequisite that guarantees the gas safety grade, improves brisance; Improve explosive reaction thoroughness, the explosion energy of water gel explosives for mine under the low temperature by the methods such as crystal formation improving agent of adding high efficiency composition flame-cooling agent, antifreezing agent, ammonium nitrate crystal, guarantee that simultaneously explosive possesses corresponding gas safety.
The present invention is with ammonium nitrate, SODIUMNITRATE is as composite oxidant, with methylamine nitrate as sensitizing agent, with methane amide and urea as antifreezing agent, with the crystal formation improving agent of Sodium dodecylbenzene sulfonate as ammonium nitrate, with Fine Aluminum Powder as the high energy additive, with Repone K and ammonium chloride as compound flame-cooling agent, make power by the crosslinked action between the compound chemistry key high, explosion velocity is moderate, the gas safety degree is high, the high-power water gel explosives for mine that resistance to low temperature is good, the present invention also provides the manufacture method of this low temperature resistant high-power water gel explosives for mine simultaneously.
For this reason, the present invention adopts following technical proposals: by weight percentage: a kind of low temperature resistant high-power allowed for use in coal mines high-power water gel explosive, it is characterized in that this explosive formulation made by following moiety: methylamine nitrate solution (75-86%) 32 ~ 35, water 10 ~ 13, ammonium nitrate 26 ~ 32, SODIUMNITRATE 6 ~ 10, methane amide 1～3, urea 1～3, Sodium dodecylbenzene sulfonate 0.1～0.5, sesbania powder 0.8 ~ 1.0, micro-atomizing aluminium powder 0.4 ~ 1.0, composite alkali metal halogenide flame-cooling agent 4 ~ 8, swelling perlite powder 1.5 ~ 3.5, bubble stabilizer 0.08 ~ 0.12, linking agent 0.08 ~ 0.12.
Wherein: composite alkali metal halogenide flame-cooling agent contains by weight percentage: Repone K 30～50, ammonium chloride 70～50; The particle diameter of Fine Aluminum Powder is 0～10 micron; Ammonium nitrate adds with two portions, and a part forms the ammonium nitrate oxidizing agent aqueous solution with water, and a part adds with the form of ammonium nitrate granule, the particle diameter of ammonium nitrate＜100 micron, and ammonium nitrate granule accounts for the 20-40% of total ammonium nitrate content.
The method of making the low temperature resistant high-power water gel explosives for mine of the present invention may further comprise the steps:
The first step: heating MMAN solution is measured the concentration of MMAN to 65-75 ℃;
Second step: part ammonium nitrate and urea is soluble in water, and 65-75 ℃ aqueous ammonium nitrate solution is made in heating;
The 3rd step: mix SODIUMNITRATE and sesbania gum rear stand-by;
The 4th step: 60 ℃ of water-bath temperature controls, in mixed medicinal cupping, add respectively aqueous ammonium nitrate solution and the methylamine nitrate aqueous solution, in stirring, at the uniform velocity add the mixture of SODIUMNITRATE and sesbania after, stirred 4 to 6 minutes, so that the abundant swelling hydration of sesbania gum.
The 5th step: ammonium nitrate granule, methane amide, Sodium dodecylbenzene sulfonate, Fine Aluminum Powder, flame-cooling agent, suds-stabilizing agent are added in the process that stirs successively, stir after 4 to 6 minutes measuring density, medicine temperature, Control of explosive density is at 1.10 ± 0.04g.cm-3, and temperature is controlled at 40 ± 5 ℃.
The 6th step: add linking agent, stir after 1 to 3 minute, linking agent is uniformly dispersed, powder charge.
Characteristics of the present invention:
(1) wherein with ammonium nitrate, nitric acid, urea as composite oxidant, wherein, urea not only can reduce ammonium nitrate crystallization point, but also can be used as the stablizer of high energy additive aluminium powder in explosive system;
(2) with the crystal formation improving agent of Sodium dodecylbenzene sulfonate as ammonium nitrate, with control ammonium nitrate crystal formation at low temperatures, prevent that large ammonium nitrate grain from occurring, and improves flowability and the detonation sensitivity of low warm purgative body;
(3) with Fine Aluminum Powder as the high energy additive, Fine Aluminum Powder can be absorbed heat rapidly in the detonation reaction and be reached activation temperature, participate in the time advance of detonation reaction, react more abundant, emit more multi-energy, both can make the too much loss of avoiding too much causing because of the flame-cooling agent add-on explosive energy, guarantee again the gas safety of explosive;
(4) with Repone K and ammonium chloride as compound flame-cooling agent, adopt alkali-metal halogenide as the efficient stopping agent of gas combustion decomposition reaction, replace the marble flour in three grades of water gel explosive of tradition, guaranteed the gas safety of water gel explosive;
(5) weight percent content of methylamine nitrate is higher than three grades of common water gel explosives for mine, and the blast performance of explosive and acting ability are improved;
(6) with methane amide as antifreezing agent, similar with the methylamine nitrate molecular structure, can improve the frost resistance of water gel explosives for mine.
Embodiment:
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Following embodiment can make the present invention of those skilled in the art comprehend, but does not limit the present invention in any way.In addition, if no special instructions, each component percentage composition is weight percentage among the present invention.
＜embodiment 1 〉
In the normally detonation of-20 ℃ of scopes, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 26m (trajectory throwing method), and select component and quality proportioning to be: concentration is 84% methylamine nitrate solution 34, water 10, ammonium nitrate 29, SODIUMNITRATE 12, methane amide 2, urea 2, Sodium dodecylbenzene sulfonate 0.3, sesbania powder 0.9, micro-atomizing aluminium powder 0.8, composite alkali metal halogenide flame-cooling agent 6, swelling perlite powder 2.4, bubble stabilizer 0.1, linking agent 0.1.
Make low temperature resistant high-power water gel explosives for mine of the present invention according to said components and content with following preparation process:
The first step: heating MMAN solution is measured the concentration of MMAN to 65-75 ℃, and is for subsequent use;
Second step: part ammonium nitrate and urea is soluble in water, and heat and make 65-75 ℃ aqueous ammonium nitrate solution, for subsequent use;
The 3rd step: mix SODIUMNITRATE and sesbania gum rear for subsequent use;
The 4th step: 60 ℃ of water-bath temperature controls, in mixed medicinal cupping, add respectively aqueous ammonium nitrate solution and the methylamine nitrate aqueous solution, in stirring, at the uniform velocity add the mixture of SODIUMNITRATE and sesbania after, stirred 4 to 6 minutes, so that the abundant swelling hydration of sesbania gum.
The 5th step: ammonium nitrate granule, methane amide, Sodium dodecylbenzene sulfonate, Fine Aluminum Powder, flame-cooling agent, suds-stabilizing agent are added in the process that stirs successively, stir after 4 to 6 minutes measuring density, medicine temperature, Control of explosive density is at 1.10 ± 0.04g.cm-3, and temperature is controlled at 40 ± 5 ℃.
The 6th step: add linking agent, stir after 1 to 3 minute, linking agent is uniformly dispersed, powder charge.
＜embodiment 2 〉
In the normally detonation of-20 ℃ of scopes, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 25m (trajectory throwing method), select component and quality proportioning to be: methylamine nitrate 34.66, water 10.95, ammonium nitrate 28.55, SODIUMNITRATE 15.4, methane amide 2, urea 2, Sodium dodecylbenzene sulfonate 0.3, sesbania powder 0.95, micro-atomizing aluminium powder 0.5, (wherein KCl 2.5 for composite alkali metal halogenide flame-cooling agent 6, NH4Cl 3.5), swelling perlite powder 2.4, bubble stabilizer 0.1, linking agent 0.1.
According to said components and content, according to the preparation process of embodiment 1, both can produce more than-20 ℃, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 26m (trajectory throwing method).
＜embodiment 3 〉
In the normally detonation of-15 ℃ of scopes, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 27m (trajectory throwing method), select component and quality proportioning to be: methylamine nitrate 33.80, water 11.35, ammonium nitrate 25, SODIUMNITRATE 15.4, methane amide 1.5, urea 1.5, Sodium dodecylbenzene sulfonate 0.3, sesbania powder 0.9, micro-atomizing aluminium powder 0.6, (wherein KCl 3 for composite alkali metal halogenide flame-cooling agent composite alkali metal halogenide flame-cooling agent 6, NH4Cl 3), swelling perlite powder 2.4, bubble stabilizer 0.1, linking agent 0.1.
According to said components and content, according to the preparation process of embodiment 1, both can produce more than-20 ℃, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 27m (trajectory throwing method).
＜embodiment 4 〉
In the normally detonation of-15 ℃ of scopes, brisance is greater than the low temperature resistant allowed for use in coal mines high-strength emulsified explosive of 27m (trajectory throwing method), select component and quality proportioning to be: methylamine nitrate 34.8, water 10.6, ammonium nitrate 26, SODIUMNITRATE 15.2, methane amide 2, urea 2, Sodium dodecylbenzene sulfonate 0.3, sesbania powder 0.9, micro-atomizing aluminium powder 0.6, (wherein KCl 3 for composite alkali metal halogenide flame-cooling agent composite alkali metal halogenide flame-cooling agent 6, NH4Cl 3), swelling perlite powder 2.4, bubble stabilizer 0.1, linking agent 0.1.
According to said components and content, according to the preparation process of embodiment 1, both can produce more than-20 ℃, brisance is greater than the low temperature resistant allowed for use in coal mines high-power water gel explosives for mine of 27m (trajectory throwing method).
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. low temperature resistant high-power allowed for use in coal mines high-power water gel explosive is characterized in that this explosive formulation made by following moiety: methylamine nitrate solution (75-86%) 32 ~ 35, water 10 ~ 13, ammonium nitrate 26 ~ 32, SODIUMNITRATE 6 ~ 10, methane amide 1～3, urea 1～3, Sodium dodecylbenzene sulfonate 0.1～0.5, sesbania powder 0.8 ~ 1.0, micro-atomizing aluminium powder 0.4 ~ 1.0, composite alkali metal halogenide flame-cooling agent 4 ~ 8, swelling perlite powder 1.5 ~ 3.2, bubble stabilizer 0.08 ~ 0.12, linking agent 0.08 ~ 0.12.
2. high-power water gel explosives for mine according to claim 1 is characterized in that selecting the micro-atomizing aluminium powder of granularity 0-10 micron.
3. according to right 1 described high-power water gel explosives for mine, it is characterized in that selecting methane amide, urea as frostproofer, the ratio of methane amide, urea is 1:1.
4. according to right 1 described high-power water gel explosives for mine, it is characterized in that selecting Repone K, ammonium chloride in the composite alkali metal muriate of 1:1～1:2 ratio as flame-cooling agent.
5. according to right 1 described high-power water gel explosives for mine, it is characterized in that selecting Sodium dodecylbenzene sulfonate as the crystal formation improving agent under the ammonium nitrate low temperature.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015043291A1 (en) * | 2013-09-27 | 2015-04-02 | 安徽理工大学 | Cooperative blasting charge structure and charge method thereof |
| CN104628497A (en) * | 2015-02-13 | 2015-05-20 | 安徽雷鸣科化股份有限公司 | High-power class-3 coal mine permissible water-gel explosive and production method thereof |
| CN104987272A (en) * | 2015-04-28 | 2015-10-21 | 安徽雷鸣科化股份有限公司 | High detonation speed seismic explosive column and making method thereof |
| CN104987270A (en) * | 2015-04-28 | 2015-10-21 | 安徽雷鸣科化股份有限公司 | Anti-compressive water gel explosive |
| CN106495973A (en) * | 2016-10-28 | 2017-03-15 | 安徽雷鸣科化股份有限公司 | A kind of aqueous gels |
| CN107098785A (en) * | 2017-05-02 | 2017-08-29 | 安徽雷鸣科化股份有限公司 | A kind of special aqueous gels of psychro-environment and preparation method thereof |
| CN110950722A (en) * | 2019-11-08 | 2020-04-03 | 湖北东神天神实业有限公司 | Foaming agent for emulsion explosive for preventing sensitized bubbles from escaping and preparation method thereof |
| CN111233591A (en) * | 2020-03-17 | 2020-06-05 | 湖北东神天神实业有限公司 | Aqueous phase for emulsion explosive and preparation method thereof |
| CN112125766A (en) * | 2020-09-22 | 2020-12-25 | 山东圣世达化工有限责任公司 | Low-temperature-resistant water gel explosive and preparation method thereof |
| CN112236406A (en) * | 2018-04-16 | 2021-01-15 | 麦克斯姆卡帕控股公司 | Method and apparatus for charging a borehole with a bulk water-based suspension or a hydrogel-type explosive |
| CN114736083A (en) * | 2022-04-01 | 2022-07-12 | 安徽理工大学 | Low-detonation-velocity explosion-welded granular emulsion explosive and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043291A1 (en) * | 2013-09-27 | 2015-04-02 | 安徽理工大学 | Cooperative blasting charge structure and charge method thereof |
| CN104628497A (en) * | 2015-02-13 | 2015-05-20 | 安徽雷鸣科化股份有限公司 | High-power class-3 coal mine permissible water-gel explosive and production method thereof |
| CN104987272A (en) * | 2015-04-28 | 2015-10-21 | 安徽雷鸣科化股份有限公司 | High detonation speed seismic explosive column and making method thereof |
| CN104987270A (en) * | 2015-04-28 | 2015-10-21 | 安徽雷鸣科化股份有限公司 | Anti-compressive water gel explosive |
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| CN112236406A (en) * | 2018-04-16 | 2021-01-15 | 麦克斯姆卡帕控股公司 | Method and apparatus for charging a borehole with a bulk water-based suspension or a hydrogel-type explosive |
| CN110950722A (en) * | 2019-11-08 | 2020-04-03 | 湖北东神天神实业有限公司 | Foaming agent for emulsion explosive for preventing sensitized bubbles from escaping and preparation method thereof |
| CN111233591A (en) * | 2020-03-17 | 2020-06-05 | 湖北东神天神实业有限公司 | Aqueous phase for emulsion explosive and preparation method thereof |
| CN112125766A (en) * | 2020-09-22 | 2020-12-25 | 山东圣世达化工有限责任公司 | Low-temperature-resistant water gel explosive and preparation method thereof |
| CN114736083A (en) * | 2022-04-01 | 2022-07-12 | 安徽理工大学 | Low-detonation-velocity explosion-welded granular emulsion explosive and preparation method thereof |
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Application publication date: 20130925 |