CN103058801B - Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive - Google Patents
Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive Download PDFInfo
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Abstract
The invention discloses a modified ammonium nitrate-fuel oil explosive for explosive welding and a preparation method of the modified ammonium nitrate-fuel oil explosive. According to the modified ammonium nitrate-fuel oil explosive, the density of the explosive is decreased by using expanded perlite, and the explosive performance of the explosive is reduced by using refined salt. The preparation method comprises the following steps of: weighing ammonium nitrate and a composite modifier according to proportions of raw materials, mixing, crushing, and drying at 80-95 DEG C; adding a composite oil phase into the dried materials, and mixing uniformly at 80-95 DEG C; and conveying wood powder, the refined salt and the expanded perlite into a cold mixer in turn, and mixing uniformly. The explosive performances, such as the density, the brisance and the explosion speed, are improved by adjusting the proportions of the raw materials of the modified ammonium nitrate-fuel oil explosive and adjusting the production process, so that the explosive can be ensured to meet explosive welding requirements of different metal materials.
Description
Technical field
The present invention relates to industrial technology field, be specifically related to a kind of modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method thereof.
Background technology
Explosive welding is that the surging force producing while utilizing explosive charge causes workpiece to collide rapidly and realizes a kind of Solid-phase welding method of welding, and is mainly used in the welding between metallic substance not of the same race.The requirement of the performance index such as explosion velocity, brisance and the tap density of explosive welding to powder type explosive is all extremely strict, has both ensured good welding effect, can not blow up again metal sheet, and technical target of the product requires to be different from the modified ammonium nitrate-fuel oil explosive of original any kind.Common modified ammonium nitrate-fuel oil explosive density is larger, and the blast performances such as its brisance and explosion velocity are higher, and explosion time is stronger to the destructiveness of the medium being in contact with it, and is not suitable for being directly used in the explosive welding of metallic substance.
Summary of the invention
The object of this invention is to provide a kind of modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method thereof, by adjusting proportioning raw materials and the production technique of modified ammonium nitrate-fuel oil explosive, improve the blast performance such as product density and brisance, explosion velocity, guarantee to meet the explosive welding requirement of explosive to different metal material.
The present invention uses pearlstone to reduce explosive density, use refined salt to reduce explosion properties, pearlstone quality is loose soft, can ensure industrial explosive production process safety, and refined salt is the main component that is used as flame-cooling agent in the production of coal mine admissible powdery industrial explosive.Bi-material all generates without explosion gases product after explosive charge, and blast operating environment, without harm, is met to industry to industrial explosive production requirement.
For achieving the above object, the present invention adopts following technical scheme:
A kind of explosive welding modified ammonium nitrate-fuel oil explosive, proportioning raw materials is: ammonium nitrate 68.2%～71.2%, composite modifier 0.2%～0.4%, composite oil phase 2.3%～2.7%, wood powder 9.0%～10.0%, refined salt 14.0%～16.0%, pearlstone 2.8%～3.2%, raw materials by weight meter, proportioning sum is 100%, the mixture of the phosphoric acid salt that wherein composite modifier is stearylamine, one or more of sulfonate, composite oil phase is one or more mixture of paraffin, soap wax, pitch, third fractional oil, Microcrystalline Wax.
The preparation method who the present invention discloses a kind of explosive welding modified ammonium nitrate-fuel oil explosive, described preparation method comprises the following steps:
(1) ammonium nitrate that is 68.2%～71.2% by proportioning raw materials by the weight percent taking and 0.2%～0.4% composite modifier co-grinding are dried to material moisture and are not more than 0.2% at 80 DEG C～95 DEG C;
(2) in dried material, adding weight percent is 2.3%～2.7% composite oil phase, at 80 DEG C～95 DEG C, mixes;
(3) wood powder that is 9.0%～10.0% by weight percent is sent in cold mixer, mixing and after 5 minutes, adding weight percent is 14.0%～16.0% refined salt, remix 5 minutes, then adding weight percent is 2.8%～3.2% pearlstone, finally mix discharging after 5 minutes, the medicinal powder water content of mixing is not more than 0.3%;
(4) package spare.
Embodiment
embodiment 1
A kind of explosive welding modified ammonium nitrate-fuel oil explosive, proportioning raw materials is: ammonium nitrate 69.7%, composite modifier 0.3%, composite oil phase 2.5%, wood powder 9.5%, refined salt 15.0%, pearlstone 3.0%.
Step of preparation process:
(1) ammonium nitrate that is 69.7% by proportioning raw materials by the weight percent taking and 0.3% composite modifier co-grinding are dried to material moisture and are not more than 0.2% at 80 DEG C～95 DEG C;
(2) in dried material, adding weight percent is 2.5% composite oil phase, at 80 DEG C～95 DEG C, mixes;
(3) wood powder that is 9.5% by weight percent is sent in cold mixer, mixing and after 5 minutes, adding weight percent is 15.0% refined salt, remix 5 minutes, and then adding weight percent is 3.0% pearlstone, finally mix discharging after 5 minutes, the medicinal powder water content of mixing is not more than 0.3%;
(4) package spare.
embodiment 2
A kind of explosive welding modified ammonium nitrate-fuel oil explosive, proportioning raw materials is: ammonium nitrate 70.0%, composite modifier 0.3%, composite oil phase 2.3%, wood powder 9.7%, refined salt 14.5%, pearlstone 3.2%.
Step of preparation process:
(1) ammonium nitrate that is 70.0% by proportioning raw materials by the weight percent taking and 0.3% composite modifier co-grinding are dried to material moisture and are not more than 0.2% at 80 DEG C～95 DEG C;
(2) in dried material, adding weight percent is 2.3% composite oil phase, at 80 DEG C～95 DEG C, mixes;
(3) wood powder that is 9.7% by weight percent is sent in cold mixer, mixing and after 5 minutes, adding weight percent is 14.5% refined salt, remix 5 minutes, and then adding weight percent is 3.2% pearlstone, finally mix discharging after 5 minutes, the medicinal powder water content of mixing is not more than 0.3%.
(4) package spare.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (1)
1. for a preparation method for the modified ammonium nitrate-fuel oil explosive of explosive welding, it is characterized in that, described preparation method comprises the following steps:
(1) ammonium nitrate that is 68.2%～71.2% by proportioning raw materials by the weight percent taking and 0.2%～0.4% composite modifier co-grinding are dried to material moisture and are not more than 0.2% at 80 DEG C～95 DEG C;
(2) in dried material, adding weight percent is 2.3%～2.7% composite oil phase, at 80 DEG C～95 DEG C, mixes;
(3) wood powder that is 9.0%～10.0% by weight percent is sent in cold mixer, mixing and after 5 minutes, adding weight percent is 14.0%～16.0% refined salt, remix 5 minutes, then adding weight percent is 2.8%～3.2% pearlstone, finally mix discharging after 5 minutes, the medicinal powder water content of mixing is not more than 0.3%;
(4) package spare;
Wherein, the phosphoric acid salt that described composite modifier is stearylamine and the mixture of sulfonate, described composite oil phase is several mixture of paraffin, soap wax, pitch, third fractional oil, Microcrystalline Wax.
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| CN201310041838.0A CN103058801B (en) | 2013-02-04 | 2013-02-04 | Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive |
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| CN104496733A (en) * | 2014-12-16 | 2015-04-08 | 陕西红旗民爆集团股份有限公司 | Low-detonation-velocity explosive with adjustable detonation velocity and brisance and preparation process thereof |
| CN105693440A (en) * | 2016-02-01 | 2016-06-22 | 宏大矿业有限公司 | Minor-diameter low-detonating-velocity industrial explosive and preparation method thereof |
| CN107793281B (en) * | 2017-11-28 | 2020-09-29 | 福建海峡科化股份有限公司 | Explosive special for explosive welding and manufacturing method thereof |
| CN108147933A (en) * | 2018-01-30 | 2018-06-12 | 辽宁红山化工股份有限公司 | A kind of viscosity powder industrial explosive and preparation method thereof |
| CN110343024A (en) * | 2019-07-27 | 2019-10-18 | 陕西红旗民爆集团股份有限公司 | A kind of outdoor type low density modified ammonium nitrate fuel explosive and preparation method |
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| CN1386727A (en) * | 2002-06-26 | 2002-12-25 | 南京理工大学 | Bulked ammonium nitrate explosive with low explosion speed and its prepaing process |
| CN101323552B (en) * | 2007-06-12 | 2011-04-06 | 辽宁红山化工股份有限公司 | Coal mine admissible powdery emulsifying ammonium nitrate fuel explosive and preparing process thereof |
| CN101402535B (en) * | 2008-10-14 | 2011-06-15 | 洛阳双瑞金属复合材料有限公司 | Blasting explosive for explosion welding of metallic composite and manufacturing method therefor |
| CN101560130A (en) * | 2009-05-27 | 2009-10-21 | 湖北天神实业股份有限公司 | Ammonia dynamite for explosive compound welding of titanium plate and steel plate |
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