CN102942428A - High-power water gel explosive applicable to coal mine and manufacturing method thereof - Google Patents
High-power water gel explosive applicable to coal mine and manufacturing method thereof Download PDFInfo
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- CN102942428A CN102942428A CN201210450704XA CN201210450704A CN102942428A CN 102942428 A CN102942428 A CN 102942428A CN 201210450704X A CN201210450704X A CN 201210450704XA CN 201210450704 A CN201210450704 A CN 201210450704A CN 102942428 A CN102942428 A CN 102942428A
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Abstract
The invention provides a high-power water gel explosive applicable to a coal mine. The high-power water gel explosive comprises the following substances in parts by weight: 30-45 parts of 75-86% nitric acid-methylamine water solution, 28-38 parts of powdery ammonium nitrate, 7-14 parts of sodium nitrate, 5-12 parts of efficient blast reducer, 0.1-1.5 parts of aluminium powder, 0.6-1.4 parts of sesbania powder, 1-3 parts of air bubble carriers, 0.2-0.4 part of cross-linking agent and 0.1-0.3 part of fluorizating protein. The power of the water gel explosive achieves the level of an existing second-stage water gel explosive applicable to the coal mine, and the safety meets the requirement of the existing second-stage water gel explosive applicable to the coal mine, so that the water gel explosive provided by the invention can be used for obviously improving the embrasure utilization ratio and lowering the blasting cost during high gas coal mine blasting operation.
Description
Technical field
The present invention relates to a kind of prescription and making method of novel high-power water gel explosives for mine.
Background technology
In existing high gas and coal dust explosion hazard controlled blasting technology, conventional explosives has three grades of emulsion explosive for coal mine, three grades of water gel explosives for mine, but the shortcoming such as this class explosive exists brisance low, and blast hole utilization factor is low.At present, in high gas rock gangway or coal road driving, be widely used the low secondary emulsion explosive for coal mine of level of security or secondary water gel explosives for mine, but because the security of this class explosive is low, in the tunnel digging blasting that contains Gas Outburst danger, the danger of gas explosion easily occurs.
For in hard above rock, the broken rock energy of the explosion of existing three grades of coal-mining water gel explosives is not enough.A large amount of production practice prove, to medium hard rock, adopt three grades of water gel explosives for mine, the blast hole utilizing factor of explosion is low, and the stone drifting inefficiency can not satisfy the needs of construction of coal mine and safe coal high-efficiency mining.Existing coal-mining water gel explosive technology be last century the seventies China from external introduction, its formulation principle and manufacturing technology and equipment are continued to use original technology substantially, never break through for many years original know-why.Permitted explosive for coal mine will have enough explosion energies on the one hand, and reliable gas safety performance is arranged on the other hand again, that is to say a little less than the ignition ability to gas.From the explosion energy angle, explosion energy level and the methane safety of explosive are conflicts, and both must suitably take into account.Generally contain anakinetomer (methylamine nitrate) in the water gel explosive, easily coordinate the contradiction of explosion energy and methane safety.The approach that solves water gel explosive brisance and this gordian technique of methane safety contradiction is: the consumption of methylamine nitrate and aluminium powder in the adjustment water gel explosive, adopt highly efficient depressor and suitable crosslinking technological, improve the thoroughness of explosive charge chemical reaction, to reach the purpose that improves explosion energy and guarantee methane safety.
Because the special construction of water gel explosive aqueous gel, adopt inertia marble flour (CaCO3) as the flame-cooling agent of permitted explosive for coal mine in existing three grades of water gel explosives for mine, but the chemistry resistanceization efficient of marble flour is low, divide again heat of desorption during the explosive detonation reaction, reach corresponding level of security, just need to add more massfraction, thereby caused the explosion energy of explosive to reduce too much.Safe design according to permitted explosive for coal mine is theoretical, adopt efficient halogenide flame-cooling agent to replace having now three grades of marble flours in the water gel explosives for mine prescription, simultaneously the proportioning of other component is adjusted, to reach on the basis that guarantees three grades of combustible gas safe scales of water gel explosives for mine standard, make explosion energy obtain the purpose of larger raising.According to research, alkali-metal halogenide is the most effective chemical inhibitor of gas combustion decomposition reaction, its flame arrest mechanism and marble flour have a great difference, compare it with marble flour in the situation that content seldom just can reach corresponding level of security, and less to the explosion energy consumption of explosive.For guaranteeing the water gel explosive workmanship, also to carry out microcapsule coated to novel flame-cooling agent.
Summary of the invention
The present invention overcomes existing three grades of difficult problems that the water gel explosives for mine brisance is low, provide a kind of for have under the coal mine gas and coal dust explosion hazard working face and can explosion and crushing the high-power water gel explosives for mine that requires of the explosion of hard above rock, its explosive strength reaches existing secondary water gel explosives for mine level, and security can meet the requirement of existing three grades of water gel explosives for mine, and the manufacture method of this high-power water gel explosives for mine also is provided simultaneously.
A kind of high-power water gel explosives for mine is comprised of the material of following parts by weight:
Concentration is 75～86% nitric acid monomethylamine aqueous solution: 30～45;
Powdery ammonium nitrate: 28～38;
SODIUMNITRATE: 7～14;
Efficient flame-cooling agent: 5～12;
Aluminium powder: 0.1～1.5;
Sesbania powder: 0.6～1.4;
Bubble carrier: 1～3;
Linking agent: 0.2～0.4;
Fluoridize albumen: 0.1～0.3;
Wherein said efficient flame-cooling agent is counted by weight and is contained: Repone K 85～92, ammonium chloride 5～10, water resistant coating 3.0～5.0; Described water resistant coating is counted by weight and is contained: paraffin or compound wax 90～95, sodium lauryl sulphate 5～10.
High-power water gel explosives for mine of the present invention, wherein said bubble carrier are the material with micropore, preferred glass microballon or pearlstone.
High-power water gel explosives for mine of the present invention, wherein said linking agent are that concentration is 60～70% potassium permanganate or potassium bichromate or the potassium pyroantimoniate aqueous solution.
The manufacture method of high-power water gel explosives for mine of the present invention may further comprise the steps:
A. with paraffin or compound wax 90～95, sodium lauryl sulphate 5～10, in 110～120 ℃ of consolutes, make the water resistant coating;
B. with Repone K 85～92 with after ammonium chloride 5～10 mixes, more described water resistant coating 3～5 spray coateds are obtained efficient flame-cooling agent on the surface of Repone K and ammonium chloride mixt;
C. SODIUMNITRATE and sesbania powder are mixed the mixture that obtains SODIUMNITRATE and sesbania powder;
D. become particle dia less than the powdery ammonium nitrate of 1mm by crusher in crushing in ammonium nitrate;
E. with concentration be successively 75～86% nitric acid monomethylamine aqueous solution, powdery ammonium nitrate, SODIUMNITRATE and sesbania powder mixture, aluminium powder, efficient flame-cooling agent, bubble carrier, linking agent, fluoridize albumen and mix rear powder charge, namely make the high-power water gel explosives for mine.
The employed albumen of fluoridizing refers to fluoroprotein foam extinguishing agent (MPF) among the present invention, and fluoroprotein foam extinguishing agent is formulated at the suitable fluorocarbon surfactant of the basis of protein foam extinguishing agent adding.Product type has FP-3%, FP-6% etc., all can use.Glass microballon used in the present invention is to be processed from strand by the borosilicate raw material, and granularity is the 10-250 micron, wall thickness 1-2 micron.This product has light weight, low heat conduction, higher intensity, the good advantages such as chemical stability, and its surface has the oleophyllie hydrophobic performance through special processing, is very easy to be scattered in the organic materials system.
Ultimate principle of the present invention is: the thermosteresis that causes because of the evaporation of moisture content when utilize reducing the reduced water content explosive charge in the explosive, the quick-fried heat that the content of increase nitric acid Monomethylamine and aluminium powder improves explosive improves brisance, simultaneously, the security of explosive is satisfied in the acting in conjunction that utilizes again microcapsulary to make paraffin or compound wax and surfactant-dispersed coat water in efficient flame-cooling agent that powdery Repone K and ammonium chloride makes and the nitric acid monomethylamine aqueous solution, improve the detonation sensitivity of explosive by the micropore of bubble carrier, the power that makes explosive reaches the level of existing secondary water gel explosives for mine, and the requirement of existing three grades of water gel explosives for mine is satisfied in security.
The present invention has following characteristics:
1, selects Repone K and ammonium chloride as efficient flame-cooling agent, replace traditional marble flour, on the one hand, the Chemical Inhibition of Repone K is effective, on the other hand, and the adding of ammonium chloride, when explosive charge, the SODIUMNITRATE in ammonium chloride and the explosive component can form ion-exchanger (NH
4CL+NaNO
3→ Na CL+NH
4NO
3), further play the effect of flame arrest, in the situation that the explosive water-content reduces, the security that improves explosive is played an important role.
2, by improving the content of nitric acid Monomethylamine and aluminium powder, reduce the water-content in the explosive, the explosion energy of explosive is significantly improved.
3, for preventing that flame-cooling agent from causing segregation to gelling system, among the present invention water repellent agent (paraffin or compound wax) and tensio-active agent (sodium lauryl sulphate) combined and flame-cooling agent Repone K and ammonium chloride are carried out microcapsule coated process, stop Repone K and ammonium chloride to destroy the formation of three grades of water gel explosives for mine gelinites because of suction, the package stability of explosive is played an important role.
In sum, the present invention compares with existing water gel explosives for mine, and its remarkable advantage is:
1) power of explosive reaches the level of existing secondary water gel explosives for mine, and the requirement of existing three grades of water gel explosives for mine is satisfied in security, and in high fiery colliery blasting operation, blast hole utilization factor significantly improves, and has reduced blasting cost.
2) manufacture method is easy, and reliable, safety is suitable for suitability for industrialized production.
Three grades of water gel explosives for mine of high-power provided by the invention are widely used in containing the tunnel, rock lane in colliery of gas and coal dust explosion hazard or the blasting works in coal road road.
Embodiment
For further specifying the present invention, specify with the following Examples:
Embodiment 1:
A kind of high-power water gel explosives for mine, wherein each component is counted by weight and is: concentration is that 82% nitric acid monomethylamine aqueous solution 38, powdery ammonium nitrate 35, SODIUMNITRATE 8, efficient flame-cooling agent 8, aluminium powder 0.5, sesbania powder 0.9, glass microballon 2, concentration are 60% potassium dichromate aqueous solution 0.3, fluoridize albumen 0.2, and wherein each component content is Repone K 90%, ammonium chloride 5%, water resistant coating 5% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: compound wax 94%, sodium lauryl sulphate 6%.
According to above-mentioned component and content, make three grades of water gel explosives for mine of high-power of the present invention with following preparation process:
A. with paraffin or compound wax, sodium lauryl sulphate, in 110～120 ℃ of consolutes, make the water resistant coating, for subsequent use;
B. after Repone K being mixed 5 minutes with ammonium chloride, will be mixed by the coating spray coated that a makes obtaining efficient flame-cooling agent in 10 minutes on the surface of Repone K and ammonium chloride mixt, for subsequent use;
C. SODIUMNITRATE and sesbania powder are mixed the mixture that obtained SODIUMNITRATE and sesbania powder in 5 minutes, for subsequent use;
D. become particle dia less than the powdery ammonium nitrate of 1mm by crusher in crushing in ammonium nitrate, for subsequent use;
E. be 82% nitric acid Monomethylamine solution when being heated to temperature and being 70 ± 5 ℃ with concentration, be incubated for subsequent use;
F. in mixing tank, turn on agitator, the mixture of the powdery ammonium nitrate that adds successively the nitric acid Monomethylamine solution that made by e, made by d, the SODIUMNITRATE that is made by c and sesbania powder, the efficient flame-cooling agent that is made by b, and aluminium powder, glass microballon, concentration be 60% potassium dichromate aqueous solution, fluoridize albumen and mix rear powder charge, namely makes three grades of water gel explosives for mine of high-power.
Embodiment 2:
Three grades of water gel explosives for mine of a kind of high-power, wherein each component is counted by weight and is: concentration is that 85% nitric acid monomethylamine aqueous solution 36, powdery ammonium nitrate 34, SODIUMNITRATE 9, efficient flame-cooling agent 9, aluminium powder 0.8, sesbania powder 0.9, glass microballon 2, concentration are 60 the potassium permanganate aqueous solution 0.2, fluoridize albumen 0.1, and wherein each component content is Repone K 88%, ammonium chloride 7%, water resistant coating 5% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: compound wax 92%, sodium lauryl sulphate 8%.
According to above-mentioned component and content, according to the preparation process of embodiment 1, namely make three grades of water gel explosives for mine of high-power.
Embodiment 3:
Three grades of water gel explosives for mine of a kind of high-power, wherein each component is counted by weight and is: concentration is that 81% nitric acid monomethylamine aqueous solution 40, powdery ammonium nitrate 34, SODIUMNITRATE 9, efficient flame-cooling agent 8, aluminium powder 0.9, sesbania powder 0.9, pearlstone 2, concentration are 60% potassium dichromate aqueous solution 0.2, fluoridize albumen 0.1, and wherein each component content is Repone K 91%, ammonium chloride 6%, water resistant coating 3% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: compound wax 94%, sodium lauryl sulphate 6%.
According to above-mentioned component and content, according to the preparation process of embodiment 1, namely make three grades of water gel explosives for mine of high-power.
Embodiment 4:
Three grades of water gel explosives for mine of a kind of high-power, wherein each component is counted by weight and is: concentration is that 80% nitric acid monomethylamine aqueous solution 40, powdery ammonium nitrate 35, SODIUMNITRATE 9, efficient flame-cooling agent 8, aluminium powder 0.9, sesbania powder 0.9, glass microballon 2, concentration are 60% potassium dichromate aqueous solution 0.2, fluoridize albumen 0.1, and wherein each component content is Repone K 91%, ammonium chloride 6%, water resistant coating 3% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: compound wax 94%, sodium lauryl sulphate 6%.
According to above-mentioned component and content, according to the preparation process of embodiment 1, namely make three grades of water gel explosives for mine of high-power.
Embodiment 5:
Three grades of water gel explosives for mine of a kind of high-power, wherein each component is counted by weight and is: concentration is that 85% nitric acid monomethylamine aqueous solution 34, powdery ammonium nitrate 35, SODIUMNITRATE 8, efficient flame-cooling agent 7, aluminium powder 0.5, sesbania powder 0.8, pearlstone 3, concentration are 60% potassium dichromate aqueous solution 0.3, fluoridize albumen 0.2, and wherein each component content is Repone K 85%, ammonium chloride 10%, water resistant coating 5% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: compound wax 92%, sodium lauryl sulphate 8%.
According to above-mentioned component and content, according to the preparation process of embodiment 1, namely make three grades of water gel explosives for mine of high-power.
Embodiment 6:
Three grades of water gel explosives for mine of a kind of high-power, wherein each component is counted by weight and is: concentration is that 84% nitric acid monomethylamine aqueous solution 39, powdery ammonium nitrate 33, SODIUMNITRATE 9, efficient flame-cooling agent 8, aluminium powder 0.8, sesbania powder 0.9, glass microballon 2, concentration are 66% the potassium permanganate aqueous solution 0.2, fluoridize albumen 0.1, and wherein each component content is Repone K 88%, ammonium chloride 8%, water resistant coating 4% in the efficient flame-cooling agent; Wherein each component content is in the water resistant coating: macromolecule resin 95%, sodium lauryl sulphate 5%.
According to above-mentioned component and content, according to the preparation process of embodiment 1, namely make three grades of water gel explosives for mine of high-power.
Test example:
Gas safety and explosive strength in order to detect high-power water gel explosives for mine of the present invention detect above-described embodiment 1-6 according to the conventional explosives detection method, and detected result sees the following form:
Table 1
Annotate: comparative example described in the table 1 is that marble flour is three grades of permitted explosive for coal mine of flame-cooling agent in the prior art.
As can be seen from Table 1, water gel explosive of the present invention with three grades of coal-mining water gel explosives compare, gas safety is all qualified, and brisance is significantly improved.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. high-power water gel explosives for mine, it is characterized in that: the material by following parts by weight forms:
Concentration is 75～86% nitric acid monomethylamine aqueous solution: 30～45;
Powdery ammonium nitrate: 28～38;
SODIUMNITRATE: 7～14;
Efficient flame-cooling agent: 5～12;
Aluminium powder: 0.1～1.5;
Sesbania powder: 0.6～1.4;
Bubble carrier: 1～3;
Linking agent: 0.2～0.4;
Fluoridize albumen: 0.1～0.3;
Wherein said efficient flame-cooling agent is counted by weight and is contained: Repone K 85～92, ammonium chloride 5～10, water resistant coating 3.0～5.0; Described water resistant coating is counted by weight and is contained: paraffin or compound wax 90～95, sodium lauryl sulphate 5～10.
2. high-power water gel explosives for mine according to claim 1, it is characterized in that: described bubble carrier is glass microballon or pearlstone.
3. high-power water gel explosives for mine according to claim 1, it is characterized in that: described linking agent is that concentration is 60～70% potassium permanganate or potassium bichromate or the potassium pyroantimoniate aqueous solution.
4. method of making each described high-power water gel explosives for mine of claim 1 to 3 is characterized in that: may further comprise the steps:
A. with paraffin or compound wax 90～95, sodium lauryl sulphate 5～10, in 110～120 ℃ of consolutes, make the water resistant coating;
B. with Repone K 85～92 with after ammonium chloride 5～10 mixes, more described water resistant coating 3～5 spray coateds are obtained efficient flame-cooling agent on the surface of Repone K and ammonium chloride mixt;
C. SODIUMNITRATE and sesbania powder are mixed the mixture that obtains SODIUMNITRATE and sesbania powder;
D. become particle dia less than the powdery ammonium nitrate of 1mm by crusher in crushing in ammonium nitrate;
E. with concentration be successively 75～86% nitric acid monomethylamine aqueous solution, powdery ammonium nitrate, SODIUMNITRATE and sesbania powder mixture, aluminium powder, efficient flame-cooling agent, bubble carrier, linking agent, fluoridize albumen and mix rear powder charge, namely make the high-power water gel explosives for mine.
5. the application of each described high-power water gel explosives for mine of claims 1 to 3 in the blasting works in the rock drift in the colliery of containing gas and coal dust explosion hazard or coal road road.
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Cited By (5)
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| CN103319290A (en) * | 2013-05-22 | 2013-09-25 | 安徽理工大学爆破工程与器材研究所 | Low-temperature-resistant high-power coalmine-permitted water-gel explosive and manufacturing 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103319290A (en) * | 2013-05-22 | 2013-09-25 | 安徽理工大学爆破工程与器材研究所 | Low-temperature-resistant high-power coalmine-permitted water-gel explosive and manufacturing method thereof |
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| 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 |
| 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 |
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| 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 |
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