CN1884231A - Water gel explosive with low detonation velocity for mining and method for producing same - Google Patents

Water gel explosive with low detonation velocity for mining and method for producing same Download PDF

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CN1884231A
CN1884231A CN 200610090783 CN200610090783A CN1884231A CN 1884231 A CN1884231 A CN 1884231A CN 200610090783 CN200610090783 CN 200610090783 CN 200610090783 A CN200610090783 A CN 200610090783A CN 1884231 A CN1884231 A CN 1884231A
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water
ammonium nitrate
explosive
detonation velocity
nitrate solution
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CN100413819C (en
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颜事龙
刘泽功
黄文尧
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Abstract

一种煤矿许用低爆速水胶炸药及其制造方法,该炸药是由下述组成成份制成:按重量百分比计:硝酸铵溶液15~30、硝酸甲胺溶液22~32、硝酸钠8~15、田菁粉0.8~0.9、碳酸钙12~15、憎水珍珠岩为0.7~3.4、聚苯乙烯塑料球为0.3~0.6、交联剂0.2~0.4、复合抗水粒状硝酸铵18~30。先制备硝酸铵溶液和复合抗水粒状硝酸铵(颗粒直径为3~5mm),再将硝酸铵溶液、硝酸甲胺溶液、硝酸钠、田菁粉、碳酸钙、憎水珍珠岩、聚苯乙烯塑料球、交联剂和复合抗水粒状硝酸铵依次加入到混合罐中,混合均匀后装药。优点是爆速低,威力大;炸药中不含TNT等有毒组份,不污染环境;炸药抗水性能好;制备方法简单。A water-gel explosive with low detonation velocity allowed in coal mines and a manufacturing method thereof. The explosive is made of the following components: by weight percentage: 15-30 ammonium nitrate solution, 22-32 methylamine nitrate solution, and 8-32 sodium nitrate 15. Squash powder 0.8-0.9, calcium carbonate 12-15, hydrophobic perlite 0.7-3.4, polystyrene plastic ball 0.3-0.6, cross-linking agent 0.2-0.4, composite water-resistant granular ammonium nitrate 18-30 . First prepare ammonium nitrate solution and composite water-resistant granular ammonium nitrate (particle diameter is 3-5mm), then mix ammonium nitrate solution, methylamine nitrate solution, sodium nitrate, scallop powder, calcium carbonate, hydrophobic perlite, polystyrene Plastic balls, cross-linking agent and composite water-resistant granular ammonium nitrate are sequentially added into the mixing tank, mixed evenly before loading. The advantages are low detonation velocity and high power; the explosive does not contain toxic components such as TNT and does not pollute the environment; the explosive has good water resistance; and the preparation method is simple.

Description

Water gel explosive with low detonation velocity for mining and manufacture method thereof
Technical field
The present invention relates to a kind of explosive and manufacture method thereof, be particularly related to a kind of be used for containing under the coal mine gas and coal dust explosion hazard working face explosion requirement, controlled blasting coal breakage lumpiness, or the controlled blasting of tunnel-surrounding eye face, or water gel explosive with low detonation velocity for mining and the manufacture method thereof used such as the anti-reflection controlled blasting of the projecting coal bed extraction of low gas permeability gas hole presplitting.
Background technology
Tunnel and working face at gas and coal dust explosion hazard carry out in the controlled blasting, are control coal breakage lumpiness, or alleviate the destruction of explosion to country rock or coal body, press for a kind of Permitted Detonator for Coal Mining explosive of low explosion velocity high-power.As in the tunnel smooth blasting construction, periphery hole this explosive of packing into can reduce the pressure in big gun hole, reduces the destruction of explosion to country rock, can form good tunnel contoured surface again; And for example: at stope, make the lumpiness of coal blasting big, can reduce destruction to coal body with this low explosive explosion, the bulk amount of coal increases; For another example: in low gas permeability gas is projecting coal bed, in order to increase the ventilation property of coal body, in gas extraction hole, carry out deep hole presplitting blasting with this explosive, both can increase the ventilation property in coal seam, extraction hole coal body is on every side formed run through the crack, guarantee that again the extraction hole is intact, improve gas exhaust efficient etc. with this.
The low explosive kind is more both at home and abroad at present, can be referring to the low explosion velocity bulking ammonium nitrate explosive and the method for making thereof of inventions such as Lv Chunxu, main preparation technology reduces explosion velocity for inert substances such as ammonium nitrate expanded back adding combustible agent and perlite are diluted, and sees China Patent No. 02137848.7; Invention industrial mixed explosives with low detonation speed and method for makings thereof such as Lv Chunxu add heavy metal oxide or Mysticum gunpowder reduction explosion velocity with No. 2 rock powdery ammoniumnitrate explosivess, see China Patent No. 89105369.7; The low exploding speed type explosive-source explosive post of Zhang Hongfeng etc. invention by changing loaded constitution, has high explosive and makes the low exploding speed type explosive-source explosive post as the retired black powder of detonating material, sees Chinese patent 03217158.7; Abroad with TNT, RDX, single chmical compound explosives such as PETN are the blast component, with high molecule plastic as tackiness agent, produce bubble with air-blowing method or chemical blowing process, obtain low explosion velocity foamed explosive after the curing, above-mentioned explosive and method for making thereof all can obtain the low explosive that a kind of explosion velocity is 1800~2500m/s, but exist following defective: (1) can not use at the operation working face that gas and coal dust explosion hazard are arranged; (2) explosive energy density is low; (3) contain high explosives such as simple substance TNT or contain responsive compositions such as black powder in the explosive, production security is poor.
Summary of the invention
The present invention with methylamine nitrate solution as sensitizing agent, with lime carbonate is flame-cooling agent, add particle diameter and be the compound anti-water ammonium nitrate of macrobead shape of 3~5mm and polystyrene plastic ball as retarding agent, make the water gel explosives for mine that explosion velocity is low, power is high, water repelling property is superior by crosslinked action, the manufacture method of this water gel explosive with low detonation velocity for mining also is provided simultaneously.
For this reason, the present invention adopts following technical proposals: a kind of water gel explosive with low detonation velocity for mining is characterized in that this explosive made by following composition: by weight percentage: concentration is that 75%~85% ammonium nitrate solution 15~30, concentration are that 78%~84% methylamine nitrate solution 22~32, SODIUMNITRATE 8~15, sesbania powder 0.8~0.9, lime carbonate 12~15, hydrophobic pearlite are 0.7~3.4, the polystyrene plastic ball is 0.3~0.6, linking agent 0.2~0.4, compound anti-water particle shape ammonium nitrate 18~30.
Wherein compound anti-water particle shape ammonium nitrate contains by weight percentage: ammonium nitrate 88~94, compound anti-water coating 6~12.
The particle diameter of compound anti-water particle shape ammonium nitrate is 3~5mm.
Compound anti-water coating material contains by weight percentage: paraffin or compound wax 30~50, rosin 20~30, octadecane amine 25~35, emulsifying agent 5~10.
The method of making water gel explosive with low detonation velocity for mining of the present invention may further comprise the steps:
A. ammonium nitrate and water Hybrid Heating are made 60~70 ℃ ammonium nitrate solution;
B. 60~70 ℃ methylamine nitrate solution is made in the heating of methylamine nitrate solution;
C. SODIUMNITRATE and sesbania powder are pulverized mixing;
D. with paraffin or compound wax and rosin, octadecane amine and emulsifying agent in 100~120 ℃ of consolutes, make compound anti-water coating;
E. the ammonium nitrate granule with coarse crushing is to join after the drying under 100~120 ℃ of conditions in the compound anti-water coating that is obtained by steps d in gas flow temperature, and be that dispersed with stirring coated 15~20 minutes under 100~120 ℃ of conditions in temperature, be cooled to normal temperature and promptly make compound anti-water particle shape ammonium nitrate;
F. in mixing tank, add successively that the solution that is obtained by step a and b mixes the back, adds that the powder that is obtained by step c mixes the back, adds lime carbonate, hydrophobic pearlite, polystyrene plastic ball mix, add linking agent and mix, add the compound anti-water particle shape ammonium nitrate that obtains by step e at last and mix the back powder charge, promptly make water gel explosive with low detonation velocity for mining.
Ultimate principle of the present invention is: with methylamine nitrate solution as sensitizing agent, with lime carbonate is flame-cooling agent, utilize membrane technique to make anti-water oil phase material and tensio-active agent be coated on exsiccant ammonium nitrate large particle surface, compound anti-water particle shape ammonium nitrate of the macrobead that makes and polystyrene plastic ball are as retarding agent, the gelinite that adopts crosslinking technological and make, it is low to obtain explosion velocity, the high and superior water gel explosives for mine of water resisting property of power.
The present invention has following characteristics:
1, the present domestic report that still do not have of the preparation of relevant oarse-grained compound anti-water ammonium nitrate, domestic only have the preparation of waterproof powder body ammonium nitrate, a preparation of expanded ammonium nitrate, among the present invention water repellent agent (rosin and paraffin etc.) and tensio-active agent (octadecane amine, emulsifying agent) combined ammonium nitrate surface is coated processing, thereby make the anti-water of ammonium nitrate granule, simultaneously, this coating fusing point height, the compound water-resistant material that effectively stops this ammonium nitrate surface is emanated in the water gel explosive system and is destroyed gelinite, and the package stability of explosive is played an important role.
2, adopt oarse-grained anti-water ammonium nitrate as thinner in the explosive, both played the purpose that reduces explosion velocity of explosive, improved the energy of explosive charge again.
In sum, the present invention compares with other low explosive, and its remarkable advantage is
1) at the poisonous components such as not conforming to TNT in the composition of selecting for use of contained explosive, production safety, free from environmental pollution;
2) adopt coatedparticles ammonium nitrate as retarding agent, make that the water gel explosives for mine explosion velocity is low, the energy density height;
3) stability of explosive is good, is having the outstanding working face of coal and gas all can use.
Embodiment
Following embodiment can make those skilled in the art more fully understand the present invention, but does not limit the present invention in any way.In addition, if no special instructions, the each component percentage composition is meant weight percentage among the present invention.
<embodiment 1 〉
The explosion velocity scope is the water gel explosive with low detonation velocity for mining of 2000~2300m/s, select component and quality proportioning to be: concentration is that 78% ammonium nitrate solution 28.5%, concentration are 83% methylamine nitrate solution 25%, SODIUMNITRATE 9%, sesbania powder 0.8%, lime carbonate 15%, hydrophobic pearlite is 2%, and the polystyrene plastic ball is 0.5%, potassium bichromate 0.2%, compound anti-water particle shape ammonium nitrate 19%.Wherein: the component and the quality proportioning of compound anti-water particle shape ammonium nitrate are: ammonium nitrate 92%, compound anti-water coating 8%; The component and the quality proportioning of compound anti-water coating material are: compound wax 30%, rosin 25%, octadecane amine 35%, RJ-1 emulsifying agent (chemical name polyisobutene succinimide) 10%.
Compound wax is produced for Jiangsu Taizhou Refinery in the embodiments of the invention, the RJ-1 emulsifying agent is by Lanzhou Oil Refinery production, the polystyrene plastic ball is that (particle diameter is 2~4mm) to the purchase of U.S. water chestnut package plant, and hydrophobic pearlite is that the Zhengzhou City emerging perlite of flood factory produces, and is as follows from Hefei.
Make water gel explosive with low detonation velocity for mining of the present invention according to above-mentioned component and content with following preparation process:
A. ammonium nitrate and water Hybrid Heating are made 70 ℃, concentration is 78% ammonium nitrate solution, and is standby;
B. be that 65 ℃ methylamine nitrate solution is made in the heating of 83% methylamine nitrate solution with concentration, standby;
C. SODIUMNITRATE and sesbania powder are mixed by pulverizing according to the above ratio, standby;
D. with compound wax, rosin, octadecane amine, the weighing according to the above ratio of RJ-1 emulsifying agent in 100 ℃ of consolutes, make compound anti-water coating, standby;
E. (particle diameter is 3~5mm) to be under 100~120 ℃ of conditions after the drying in gas flow temperature to the ammonium nitrate granule of coarse crushing, join in the tank body of the compound anti-water coating that obtains by steps d, discharging after temperature is that dispersed with stirring coats 15~20 minutes under 100~120 ℃ of conditions, be cooled to normal temperature and obtain compound anti-water particle shape ammonium nitrate, standby;
F. in mixing tank, adding the solution that obtained by step a and b successively mixes after 3~5 minutes, adds the powder that is obtained by step c and mix after 5~8 minutes, add lime carbonate, hydrophobic pearlite, polystyrene plastic ball mixing 5~8 minutes, add linking agent potassium bichromate mixing 3~5 minutes, add at last by step e and obtain compound anti-water particle shape ammonium nitrate mixing after 5~8 minutes, with the medicine diameter of packing into is in the powder stick of φ 27mm, makes the water gel explosive with low detonation velocity for mining that the explosion velocity scope is 2000~2300m/s.
<embodiment 2 〉
Making the explosion velocity scope is the Permitted Detonator for Coal Mining low explosive of 1700~2000m/s, select component and quality proportioning to be: concentration is that 83% ammonium nitrate solution 18.6%, concentration are 78% methylamine nitrate solution 23%, SODIUMNITRATE 12%, sesbania powder 0.8%, lime carbonate 14%, and hydrophobic pearlite is 3%, the polystyrene plastic ball is 0.4%, potassium pyroantimoniate 0.2%, compound anti-water particle shape ammonium nitrate 28%.Wherein: the component and the quality proportioning of compound anti-water particle shape ammonium nitrate are: ammonium nitrate 91%, compound anti-water coating 9%; The component and the quality proportioning of compound anti-water coating material are: compound wax 40%, rosin 25%, octadecane amine 25%, SP-80 emulsifying agent (chemical name dehydration sorbic alcohol monoleate) 10% (Coal Mining Research Institute's Huaibei Study on Blasting is produced).
According to above-mentioned component and content,, can produce the water gel explosive with low detonation velocity for mining that the explosion velocity scope is 1700~2000m/s according to the preparation process of embodiment 1.
<embodiment 3 〉
Making the explosion velocity scope is the water gel explosive with low detonation velocity for mining of 1800~2200m/s, select component and quality proportioning to be: concentration is that 82% ammonium nitrate solution 22%, concentration are 82% methylamine nitrate solution 25%, SODIUMNITRATE 12%, sesbania powder 0.8%, lime carbonate 14%, and hydrophobic pearlite is 2.5%, the polystyrene plastic ball is 0.5%, potassium bichromate 0.2%, compound anti-water particle shape ammonium nitrate 23%.Wherein: the component and the quality proportioning of anti-water particle shape ammonium nitrate are: ammonium nitrate 90%, compound anti-water coating 10%; The component and the quality proportioning of compound anti-water coating material are: paraffin 40%, rosin 25%, octadecane amine 30%, RJ-1 emulsifying agent 5%.
According to above-mentioned component and content,, can produce the water gel explosive with low detonation velocity for mining that the explosion velocity scope is 1800~2200m/s according to the preparation process of embodiment 1.

Claims (5)

1、一种煤矿许用低爆速水胶炸药,其特征在于该炸药是由下述组成成份制成的:按重量百分比计:浓度为75%~85%的硝酸铵溶液15~30、浓度为78%~84%的硝酸甲胺溶液22~32、硝酸钠8~15、田菁粉0.8~0.9、碳酸钙12~15、憎水珍珠岩为0.7~3.4、聚苯乙烯塑料球为0.3~0.6、交联剂0.2~0.4、复合抗水粒状硝酸铵18~30。1. A water-gel explosive with low detonation velocity allowed in coal mines is characterized in that the explosive is made of the following components: by weight percentage: 15-30% ammonium nitrate solution with a concentration of 75%-85%, and a concentration of 78%~84% methylamine nitrate solution 22~32, sodium nitrate 8~15, scallop powder 0.8~0.9, calcium carbonate 12~15, hydrophobic perlite 0.7~3.4, polystyrene plastic ball 0.3~ 0.6, cross-linking agent 0.2-0.4, composite water-resistant granular ammonium nitrate 18-30. 2、根据权利要求1所述的煤矿许用低爆速水胶炸药,其特征是复合抗水粒状硝酸铵按重量百分比计含有:粒状硝酸铵88~94、复合抗水包覆剂6~12。2. The water-gel explosive with low detonation velocity allowed in coal mines according to claim 1 is characterized in that the composite water-resistant granular ammonium nitrate contains: 88-94 granular ammonium nitrate and 6-12 composite water-resistant coating agents in percent by weight. 3、根据权利要求2所述的煤矿许用低爆速水胶炸药,其特征是复合抗水粒状硝酸铵的颗粒直径为3~5mm。3. The allowable low detonation velocity water-gel explosive for coal mines according to claim 2, characterized in that the particle diameter of the composite water-resistant granular ammonium nitrate is 3-5 mm. 4、根据权利要求2所述的煤矿许用低爆速水胶炸药,其特征是复合抗水包覆剂材料按重量百分比计含有:石蜡或复合蜡30~50、松香20~30、十八烷胺25~35、乳化剂5~10。4. The coal mine permissible low detonation velocity water-gel explosive according to claim 2 is characterized in that the composite water-resistant coating material contains by weight percentage: paraffin wax or composite wax 30-50, rosin 20-30, octadecane Amine 25-35, emulsifier 5-10. 5、一种制造权利要求1至3任一项所述的煤矿许用低爆速水胶炸药的方法,其特征是包括以下步骤:5. A method for manufacturing the water-gel explosive with a low detonation velocity allowed for coal mines according to any one of claims 1 to 3, characterized in that it comprises the following steps: a.将硝酸铵和水混合加热制成60~70℃的硝酸铵溶液;a. Mix and heat ammonium nitrate and water to make ammonium nitrate solution at 60-70°C; b.将硝酸甲胺溶液加热制成60~70℃的硝酸甲胺溶液;b. heating the methylamine nitrate solution to make a methylamine nitrate solution at 60-70°C; c.将硝酸钠和田菁粉粉碎混合;c. Sodium nitrate and sage powder are pulverized and mixed; d.将石蜡或复合蜡与松香、十八烷胺和乳化剂于100~120℃混熔,制成复合抗水包覆剂;d. Mix and melt paraffin wax or composite wax with rosin, stearylamine and emulsifier at 100-120°C to make a composite water-resistant coating agent; e.将粗碎的硝酸铵颗粒在气流温度为100~120℃条件下干燥后加入到由步骤d得到的复合抗水包覆剂中,并在温度为100~120℃条件下搅拌分散包覆15~20分钟,冷却至常温即制成复合抗水粒状硝酸铵;e. Dry the coarsely crushed ammonium nitrate particles at an air temperature of 100-120°C and add them to the composite water-resistant coating agent obtained in step d, and stir, disperse and coat at a temperature of 100-120°C After 15-20 minutes, cool to room temperature to make composite water-resistant granular ammonium nitrate; f.在混合罐中,依次加入由步骤a和b得到的溶液混合均匀后、加入由步骤c得到的粉体混合均匀后、加入碳酸钙、憎水珍珠岩、聚苯乙烯塑料球混合均匀、加入交联剂混合均匀,最后加入由步骤e得到的复合抗水粒状硝酸铵混合均匀后装药,即制得煤矿许用低爆速水胶炸药。f. In the mixing tank, add the solutions obtained in steps a and b and mix evenly, add the powder obtained in step c and mix evenly, add calcium carbonate, hydrophobic perlite, polystyrene plastic balls and mix evenly, Add a cross-linking agent and mix evenly, and finally add the composite water-resistant granular ammonium nitrate obtained in step e, mix evenly, and then charge the explosive to obtain a water-gel explosive with a low detonation velocity permitted in coal mines.
CNB2006100907832A 2006-06-30 2006-06-30 Water-gel explosive with low detonation velocity allowed in coal mine and its manufacturing method Expired - Fee Related CN100413819C (en)

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