JPH02229779A - Granular explosive composition - Google Patents

Granular explosive composition

Info

Publication number
JPH02229779A
JPH02229779A JP4861089A JP4861089A JPH02229779A JP H02229779 A JPH02229779 A JP H02229779A JP 4861089 A JP4861089 A JP 4861089A JP 4861089 A JP4861089 A JP 4861089A JP H02229779 A JPH02229779 A JP H02229779A
Authority
JP
Japan
Prior art keywords
ammonium nitrate
weight
granular explosive
mixture
granular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4861089A
Other languages
Japanese (ja)
Other versions
JP2598319B2 (en
Inventor
Tokuo Inoue
篤雄 井上
Kazuhiro Miyamoto
一弘 宮本
Tomie Nishimura
西村 トミヱ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP1048610A priority Critical patent/JP2598319B2/en
Publication of JPH02229779A publication Critical patent/JPH02229779A/en
Application granted granted Critical
Publication of JP2598319B2 publication Critical patent/JP2598319B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B31/00Compositions containing an inorganic nitrogen-oxygen salt
    • C06B31/28Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
    • C06B31/30Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with vegetable matter; with resin; with rubber

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To improve flowability and water resistance by using a specified oxidizing agent, specified combustibles and resins. CONSTITUTION:99.50wt.% mixture of 85-98wt.% powdery or porous prill ammonium nitrate of <=1.4mm grain size as an oxidizing agent with 2-15wt.% waxes such as paraffin wax as combustibles is mixed with 1-50wt.% resins such as polyisobutylene resin having 5,000-140,000 mol.wt. and 0-5wt.% metal powder such as flaky Al powder.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、採石、土木、採鉱等の産業用の爆破作業に利
用される粒状爆薬組成物に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a granular explosive composition used in industrial blasting operations such as quarrying, civil engineering, and mining.

(従来の技術) 酸化剤と可燃物よりなる粒状爆薬の代表例として、ボー
ラスブリル硝安と油剤からなる硝安油剤爆薬がある.こ
の爆薬は、雷管1本で起爆できない為、伝爆薬が使用さ
れる.これは、硝安浦剤爆薬の起爆感度が、他の一般爆
薬に比べてiI1!感であり、安全性が高い事を示すも
のである。又、2.9 tt+性のある粒状物なので、
爆破用ボアホール内に、直接、流し込む事ができ、ボア
ホール全体に充填する事ができる.更に、単価が、他の
一殻爆薬に比べて安価な為、産業用爆破剤として、広く
用いられている事は、周知の事柄である. (発明が解決しようとする課題) 硝安油剤爆薬は、通常、ポーラスプリル硝安と軽油を混
合した爆薬である為、ある種の条件下、即ち、爆破用ボ
゜アホールに水が存在したり、地下水が浸み込んだり、
雨天でボアホール内に、水が侵入する場合には、硝安が
容易に溶解し、硝安の溶解によって、軽油が分離し、最
後には、爆発性を失なってしまう為、この様な条件下で
は、硝安油剤爆薬の使用が困難となる.従って、この欅
な条件下では、耐水性のあるダイナマイトやスラリ−1
薬等のカートリッジタイプの爆薬が用いられたり、予め
、プラスティック製薬筒の様な防水性のある材料に個装
されたカートリッジタイプの硝安浦剤爆薬が使用される
。しかしながら、前者の場合、爆薬単価が硝安油剤爆薬
に比べて高い為、発破コストの上昇を招いてしまう.又
、後者の場合、硝安油剤爆薬は、他のーpQ爆薬に比べ
て、低密度、低爆速と、性能が低いにも拘らず、ボアホ
ール全体に流し込む事ができる為、良好な性能を発揮で
きる特徴を有しているが、この特性をプラスティック製
薬筒に充填して、カートリッジにしてしまうと、カート
リッジとボアホ〜ル間にすきまが生じ、失う事になる.
しかも、プラスティック製薬筒に保護された耐水性能は
、N筒がボアホール内で損傷する事によって、容易に失
われてしまう.又、プラスティック製薬筒に充填された
硝安浦剤爆薬は、かさ比重が水に比べて小さい為、水中
に沈み込ませるには、カートリッジに重し等をつける必
要があり、装填作業が極めて煩雑となる事態を惹き起す
。従って、ボアホールに直接、充填出来、かつ、水に溶
解しにくい特性を持つ粒状爆薬を開発する事が大いに望
まれている。
(Prior Art) A typical example of a granular explosive consisting of an oxidizing agent and a combustible material is an ammonium nitrate oil explosive consisting of a bolus bryl ammonium nitrate and an oil agent. This explosive cannot be detonated with a single detonator, so a transfer charge is used. This means that the detonation sensitivity of Niyasuura agent explosives is 1I1 compared to other general explosives! This indicates a high level of safety. Also, since it is a granular material with 2.9 tt+ characteristics,
It can be poured directly into the blasting borehole, filling the entire borehole. Furthermore, it is well known that it is widely used as an industrial explosive because its unit price is cheaper than other single shell explosives. (Problems to be Solved by the Invention) Ammonium nitrate oil explosives are usually mixed explosives of porous ammonium nitrate and light oil, so under certain conditions, such as when water is present in the blasting borehole or underground water is present. seeps in,
If water enters the borehole during rainy weather, ammonium nitrate will easily dissolve, and the dissolution of ammonium nitrate will separate the light oil, which will eventually lose its explosive properties. This makes it difficult to use ammonium nitrate explosives. Therefore, under these harsh conditions, water-resistant dynamite and slurry 1
Cartridge-type explosives, such as medicine, are used, or cartridge-type Nyasuura agent explosives, which are individually packaged in waterproof materials such as plastic cartridges, are used. However, in the case of the former, the unit price of the explosive is higher than that of ammonium nitrate explosives, leading to an increase in blasting costs. In the latter case, ammonium nitrate oil explosives can exhibit good performance because they can be poured into the entire borehole, even though they have lower density, lower detonation velocity, and lower performance than other pQ explosives. However, if this characteristic is filled into a plastic pharmaceutical cylinder and made into a cartridge, a gap will be created between the cartridge and the borehole, and this characteristic will be lost.
Moreover, the water resistance protected by the plastic medicine cylinder is easily lost when the N cylinder is damaged within the borehole. In addition, the bulk specific gravity of Niyasuura agent explosives filled in plastic cartridges is smaller than that of water, so it is necessary to attach a weight to the cartridge in order to make it sink into water, making the loading process extremely complicated. bring about a situation. Therefore, it is highly desirable to develop a granular explosive that can be directly filled into a borehole and that is difficult to dissolve in water.

更に、硝安油剤爆薬には、可燃物として、通常、常温で
液状である軽油が用いられている為、通常用いられるポ
ーラスブリル硝安は、硝安油剤爆薬の流動性を保持する
為に、粒径の比較的大きなものが用いられる。その結果
、自然流下させた硝安油剤爆薬の充填密度は、0.8g
/cc @後の低い範囲に押えられる.これを改善する
為に、粒径の小さなポーラスブリル硝安を用いると、流
動性が悪《なり、本来の特性を悪化させる結果となる.
この欅に、流動性が良好で、充填密度の高い粒状爆薬の
開発も大いに、望まれている. (課題を解決する為の手段) 本発明者等は、ボアホールに直接流し込む事のできる流
動性を持ち、かつ、水にとけにくい特性を有する粒状爆
薬を開発すべく鋭意研究を重ねた結果、硝安油剤爆薬の
可燃物として、通常、使用されている軽油の代りに、ワ
ックス類と樹脂類の混合物を使用する事によって、優れ
た流動性と改良された耐水性を有する粒状爆薬にする事
ができる事を見い出したものである. 即ち、本発明は、酸化剤として、硝安、可燃物として、
ワノクス類と樹脂類とを使用する事を特徴とする粒状爆
薬組成物に関するものである,本発明に使用される酸化
剤は、硝安であり、アルカリ金属硝酸塩類、アルカリ土
類金属硝酸塩類、アルカリ金属塩素酸塩類、アルカリ土
類金属塩素酸塩類、アルカリ金属過塩素酸塩類アルカリ
土頻金属過塩素酸塩類及び過塩素酸アンモニウムを硝安
と併用する事ができる. 本発明に使用される硝安は、その形状によって、粒状、
粉状、ポーラスブリル状に分けられるが、いずれの形状
のものを使用する事が可能である.しかしながら、起爆
感度の点がら、酸化剤と可燃物の接触が密となるポーラ
スプリル硝安を使う事が好ましい.更に、ボーラスブリ
ル硝安の内、粒径が1.4mm以下の微細なポーラスブ
リル硝安を使用する事は、優れた起tB感度及び高い充
填密度を得る事ができ、最も好ましい. 本発明では、硝安を主とする酸化剤は、粒状爆薬全体に
対して、85−98 II量%の範囲で使用することが
好ましい. 本発明に、可燃物として使用されるワックス類は、常温
で固体状を存するものである.例えば、パラフィンワッ
クス、マイクロクリスタリンワックス等の石油系ワック
ス類、その他、疏水性の動植物系ワックス類や鉱物系ワ
ックス類が使用される. 本発明に使用される樹脂類は、前述のワックス類と加熱
溶解混合した際、ワックス類との相溶性の優れたもので
ある.例えば、ポリイソプチレン樹脂、ポリエチレンワ
ックス、石油樹脂、エチレン酢酸ビニル共重合体、ポリ
プタジェン樹脂の単独又は、2種以上の混合物が、前述
のワックス類と混合して用いられる. 本発明で、前述のワックス類と前述の樹脂類の混合物を
使用する事によって、硝安粒子表面に強じんなコーティ
ング膜が形成され、粒状爆薬が水と接触した際、水が容
易に侵入する事を防ぐ事を可能にする.ワックス類のみ
で、コーティング膜を形成する場合、加熱熔解状態のワ
ックス類が硝安粒子表面に付着し、常温迄、冷却される
と、ワノクス類のコーティング膜に亀裂が入り、水の浸
入を比較的容易に許してしまう結果となる.又、樹脂類
のみで、コーティング膜を形成する場合、加熱溶解状態
の樹脂類は、高粘度で、硝安粒子表面への均一な付着が
難しく、かつ、冷却後の樹脂類のコーティング膜は、硝
安粒子表面から、はく離しやすい為、耐水性のあるコー
ティング膜を形成し難い.従って、ワックス類と謝脂類
の混合物を使用する本発明の方法は、優れたコーティン
グ膜を形成する事を、本発明者等は、見い出したのであ
る. 本発明に用いられるポリイソブチレン樹脂と高純度イソ
ブチレンの重合体で、分子量s , ooo〜140,
000 のものが好ましい. 本発明に用いられるポリエチレンワックスは、−IG式
(Cl! =CIIg )で表わされるエチレンの重金
物で、分子量が1,000〜10,000のものが好ま
しい. 本発明に用いられる石油樹脂は、ナフサ分解過程で得ら
れる留分を重合した樹脂であり、Cs留分を重合したC
,系石油樹脂、C,留分を重合したC,系石油樹脂、両
方の留分を共重合させたC,、C,系共重合石油樹脂で
、分子量600〜2,500のものが好ましい. 本発明に用いられるエチレン酢酸ビニル共重合体は、−
S式(CL −Cut )で表わされるエチレンと一触
式(CH!COOCH論CH. )で表される酢酸ビニ
ル共重合させたものであり、メルトインデックス2−5
00、かつ、酢酸ビニル含量5wt%〜50wt%のエ
チレン酢酸ビニル共重合体が好ましい.本発明に用いら
れるポリプタジエン樹脂は、一般式(CHg = CH
−CH − CHx )のブタジエンを主成分として重
合させ、l、2結合部、及び/又は、1、4結合部に二
重結合を残したもので、その端末部が〔−■〕、( −
Cool) 、又は( −CHz  Cut OH)と
なったものであり、分子量が500〜200, 000
のボリブタジエン樹脂が好ましい. 本発明では、樹脂類は、ワンクス類と樹脂類の混合物全
体に対して、1〜50重量%の範囲で使用するのが好ま
しい. 本発明で、可燃物として使用されるワックス類と樹脂類
の混合物は、粒状爆薬全体に対して、2〜15重量%の
範囲で用いるのが好ましい.本発明の硝安を主とする酸
化剤、ワックス類及び樹脂類の混合物に、金属粉を使用
して、粒状爆薬の爆発エネルギーを増加させる事ができ
る.本発明に使用される金属粉は、各種単一金属の粉末
、及び、各種合金類の粉末が用いられるが、この内、特
に、アルミニウム粉末、マグネシウム15)末、硫化鉄
粉末、珪素鉄粉末等が用いられる.最も一般的に使用さ
れるのは、アルミニウム粉末で、形状によって、フレー
ク状アルミニウムとアトマイズアルミニウムに区別され
るが、単独、又は、混合物で使用する事が可能である.
本発明では、金属粉は、粒状爆薬全体に対して0〜5f
fi量%の範囲で使用するのが好ましい.(作用) 本発明者等は、硝安を主とする酸化剤、ワックス類と樹
脂類の混合物からなる可燃物を使用する事によって、流
動性の優れ、かつ、改良された耐水性を有する粒状爆薬
にする事が出来る事を見い出したものである。又、酸化
剤に粒径が1.4■以下の微細なポーラスプリル硝安を
用いる事によって、充填密度が大きく、かつ、煽発性能
の優れた耐水性粒状爆薬にする事が出来る事を見い出し
たものである.更に、前述の粒状爆薬に、金属粉、特に
、アルミニウム粉末を用いる事によって、更に爆発エネ
ルギーの優れた粒状爆薬にする事が出来る事を見い出し
たものである。
Furthermore, since ammonium nitrate explosives usually use light oil, which is liquid at room temperature, as the combustible material, the porous bryl ammonium nitrate that is normally used has a particle size that is small in order to maintain the fluidity of ammonium nitrate explosives. A relatively large one is used. As a result, the packing density of the ammonium nitrate explosive that was allowed to flow down by gravity was 0.8 g.
It is suppressed to a low range after /cc @. In order to improve this, if porous bryllium ammonium nitrate with a small particle size is used, the fluidity becomes poor and the original properties are deteriorated.
The development of granular explosives with good fluidity and high packing density is also highly desired. (Means for Solving the Problems) The present inventors have conducted intensive research to develop a granular explosive that has fluidity that allows it to be directly poured into a borehole and has characteristics that are difficult to dissolve in water. By using a mixture of waxes and resins as the combustible material in oil-based explosives instead of the commonly used light oil, it is possible to create granular explosives with excellent fluidity and improved water resistance. This is what I discovered. That is, the present invention uses ammonium nitrate as an oxidizing agent, as a combustible material,
The oxidizing agent used in the present invention is ammonium nitrate, and the oxidizing agent used in the present invention is ammonium nitrate, and the oxidizing agent is ammonium nitrate. Metal chlorates, alkaline earth metal chlorates, alkali metal perchlorates, alkaline earth metal perchlorates, and ammonium perchlorate can be used in combination with ammonium nitrate. The ammonium nitrate used in the present invention is granular,
It can be divided into powder form and porous brilled form, but either form can be used. However, from the point of view of detonation sensitivity, it is preferable to use porous sprill ammonium nitrate, which allows close contact between the oxidizing agent and the combustible material. Further, among the bolus Bryl ammonium nitrates, it is most preferable to use fine porous Bryl ammonium nitrate with a particle size of 1.4 mm or less, since it is possible to obtain excellent tB sensitivity and high packing density. In the present invention, the oxidizing agent mainly containing ammonium nitrate is preferably used in an amount of 85-98 II% based on the entire granular explosive. The waxes used as combustible materials in the present invention are solid at room temperature. For example, petroleum waxes such as paraffin wax and microcrystalline wax, hydrophobic animal and plant waxes, and mineral waxes are used. The resins used in the present invention have excellent compatibility with the waxes when heated and melted and mixed with the waxes. For example, polyisoptylene resin, polyethylene wax, petroleum resin, ethylene vinyl acetate copolymer, and polyptadiene resin may be used alone or in combination with two or more of them in combination with the above-mentioned waxes. In the present invention, by using a mixture of the above-mentioned waxes and the above-mentioned resins, a strong coating film is formed on the surface of the ammonium nitrate particles, and when the granular explosive comes into contact with water, water can easily penetrate. This makes it possible to prevent When a coating film is formed using only waxes, the waxes in a heated and molten state adhere to the surface of the ammonium nitrate particles, and when cooled to room temperature, the coating film of the waxes cracks, making it relatively difficult for water to penetrate. This results in easy forgiveness. In addition, when forming a coating film using only resins, the resin in a heated and melted state has a high viscosity and is difficult to uniformly adhere to the ammonium nitrate particle surface, and the resin coating film after cooling is difficult to adhere to the surface of ammonium nitrate particles. It is difficult to form a water-resistant coating film because it easily peels off from the particle surface. Therefore, the present inventors have found that the method of the present invention, which uses a mixture of waxes and fats, forms an excellent coating film. The polymer of polyisobutylene resin and high purity isobutylene used in the present invention has a molecular weight of s, ooo to 140,
000 is preferable. The polyethylene wax used in the present invention is a heavy metal compound of ethylene represented by the formula -IG (Cl!=CIIg), and preferably has a molecular weight of 1,000 to 10,000. The petroleum resin used in the present invention is a resin obtained by polymerizing a fraction obtained in the naphtha cracking process, and is a resin obtained by polymerizing a Cs fraction.
, a C-based petroleum resin obtained by polymerizing a C-based petroleum resin, a C-based petroleum resin obtained by copolymerizing both fractions, and a C-based copolymerized petroleum resin having a molecular weight of 600 to 2,500. The ethylene vinyl acetate copolymer used in the present invention is -
It is a copolymer of ethylene represented by the S formula (CL-Cut) and vinyl acetate represented by the monocatalytic formula (CH! COOCH theory CH.), and has a melt index of 2-5.
00 and an ethylene vinyl acetate copolymer having a vinyl acetate content of 5 wt% to 50 wt%. The polyptadiene resin used in the present invention has the general formula (CHg = CH
-CH - CHx ) is polymerized with butadiene as the main component, leaving a double bond at the l, 2 bond and/or 1,4 bond, and the terminal part is [-■], ( -
Cool) or (-CHz Cut OH) and has a molecular weight of 500 to 200,000
Polybutadiene resin is preferred. In the present invention, the resin is preferably used in an amount of 1 to 50% by weight based on the entire mixture of Wanks and resin. In the present invention, the mixture of waxes and resins used as the combustible material is preferably used in an amount of 2 to 15% by weight based on the entire granular explosive. The explosion energy of granular explosives can be increased by using metal powder in the mixture of the present invention's oxidizing agent, waxes, and resins, mainly consisting of ammonium nitrate. The metal powder used in the present invention includes powders of various single metals and powders of various alloys, among which aluminum powder, magnesium 15) powder, iron sulfide powder, iron silicon powder, etc. is used. The most commonly used aluminum powder is aluminum powder, which is divided into flake aluminum and atomized aluminum depending on its shape, but it can be used alone or in a mixture.
In the present invention, the metal powder is 0 to 5 f for the entire granular explosive.
It is preferable to use the amount of fi in the range of %. (Function) The present inventors have developed a granular explosive that has excellent fluidity and improved water resistance by using an oxidizing agent mainly containing ammonium nitrate and a combustible material consisting of a mixture of waxes and resins. This is what I discovered that can be done. We also discovered that by using fine porous sprill ammonium nitrate with a particle size of 1.4 square meters or less as an oxidizing agent, it was possible to make a water-resistant granular explosive with a large packing density and excellent instigation performance. It is something. Furthermore, it has been discovered that by using metal powder, particularly aluminum powder, in the granular explosive described above, it is possible to make the granular explosive even more superior in explosive energy.

(実施例) 本発明を実施例を掲げて以下に詳しく説明する.実施例
l ポーラスプリル硝安(住友化学工業(株)94重量%に
、予め加熱溶解混合したバラフィンワックス(日本精蝋
(株)1301Fパラフィン)5.4重量%とエチレン
酢酸ビニル共重合体(三井ポリケミカル(株)エバフレ
ックス#250)0.6重量%の混合物を加え、90゜
Cで充分に混合して、粒状爆薬組成物を得た. 実施例2 粒径が1.41以下の微細なポーラスプリル硝安94重
量%に、予め加熱溶解混合したパラフィンワ7クス(日
木精蝋(株)130゜Fパラフィン)5.4重量%とエ
チレン酢酸ビニル共重合体(三井ポリケミカル(株)エ
バフレックス#250 ) 0.6重景%の混合物を加
え、90”Cで十分混合して粒状爆薬組成物を得た. 実施例3 粒径が1.40以下の微細なボーラスブリル硝安80重
量%と粉状硝安(宇部興産(株))14重量%の混合物
に、予め加熱溶解混合したバラフィンワンクス(日本$
1!jl(株)l30゜Fパラフィン)541重量%、
石油樹脂(東邦石油用脂(株)トホ−ハイレジン#75
) 0.3重量%、及びエチレン酢酸ビニル共重合体(
三井ポリケミカル(株)エハフレ,クス#250 ) 
0.6重量%の混合物を加え、90“Cで十分に混合し
て粒状爆薬組成物を得た.実施例4 粒径が1.41以下の微細なポーラスプリル硝安84重
量%と硝酸カリウム(和光純薬工業(株)試薬)10重
量%の混合物に、予め加熱溶解混合したバラフィンワノ
クス7(日本精vA(株)l30゜Fパラフィン)5.
4重量%、ポリエチレンワンクス(三洋化成工業(株)
サンワックス151P)0.3重量%、及び、石油樹脂
(東邦石油樹脂(株)トーホーハイレジン#75) 0
.3重量の混合物を加え、90℃で十分混合して粒状爆
薬組成物を得た.実施例5 粒径が1.41以下の微細なポーラスプリル硝安89重
量%と遇塩素酸アンモニウム(林純薬工業(株)試薬)
5重量%の混合物に、予め加熱溶解混合したマイクロク
リスタリンワックス(日木精蝋(株)Hi旧c−107
0) 5.4重量%、ポリイソプチレン樹脂(エッソ化
学(株)ビスタネツクスMML80) 0.3重1%、
及び、石油樹脂(東邦石油樹脂(株)トーホーハイレジ
ン#75)0.3重量%の混合物を加え、90゜Cで十
分に混合して粒状爆薬姐成物を得た. 実施例6 粒径が1.4mm以下の微細なポーラスブリル硝安92
重量%に、予め加熱熔解混合したパラフィンワ7クス(
日木精蝋(株)130゜Fパラフィン)644重責%と
エチレン酢酸ビニル共重合体(三井ボリ゜ケミカル(株
)、エバフレックス#250)1.61盪%の混合物を
加え、90゜Cで十分に混合して粒状爆薬組成物を得た
(Example) The present invention will be explained in detail below using examples. Example 1 Porous sprill ammonium nitrate (Sumitomo Chemical Co., Ltd.) 94% by weight, paraffin wax (Nippon Seiro Co., Ltd. 1301F paraffin) 5.4% by weight previously heated and mixed with ethylene-vinyl acetate copolymer (Mitsui Chemical Co., Ltd.) Polychemical Co., Ltd. Evaflex #250) 0.6% by weight mixture was added and thoroughly mixed at 90°C to obtain a granular explosive composition. Example 2 Fine particles with a particle size of 1.41 or less 94% by weight of porous sprill ammonium nitrate, 5.4% by weight of paraffin wax (130°F paraffin, manufactured by Hiki Seiro Co., Ltd.) and 5.4% by weight of ethylene vinyl acetate copolymer (Mitsui Polychemical Co., Ltd.), which had been heated and mixed in advance. EVAFLEX #250) 0.6% mixture was added and thoroughly mixed at 90"C to obtain a granular explosive composition. Example 3 Fine bolus Bryl ammonium nitrate with a particle size of 1.40 or less 80 weight Paraffin Wanx (Japan $
1! jl Co., Ltd. l30°F paraffin) 541% by weight,
Petroleum resin (Toho Oil Co., Ltd. Toho Hi Resin #75
) 0.3% by weight, and ethylene vinyl acetate copolymer (
Mitsui Polychemical Co., Ltd. Ehafure, Kusu #250)
0.6% by weight of the mixture was added and thoroughly mixed at 90"C to obtain a granular explosive composition. Example 4 84% by weight of fine porous sprill ammonium nitrate with a particle size of 1.41 or less and potassium nitrate (sum) 5. Paraffin Wanox 7 (Nippon Sei vA Co., Ltd. 130°F paraffin) was heated and mixed in a 10% by weight mixture (Hikari Pure Chemical Industries, Ltd. reagent).
4% by weight, polyethylene wanx (Sanyo Chemical Industries, Ltd.)
Sunwax 151P) 0.3% by weight, and petroleum resin (Toho Oil Resin Co., Ltd. Toho Hi Resin #75) 0
.. 3 weights of the mixture were added and thoroughly mixed at 90°C to obtain a granular explosive composition. Example 5 89% by weight of fine porous sprill ammonium nitrate with a particle size of 1.41 or less and ammonium chlorate (Hayashi Junyaku Kogyo Co., Ltd. reagent)
Microcrystalline wax (Hiki Seiro Co., Ltd. Hi old c-107) was heated and melted and mixed in a 5% by weight mixture in advance.
0) 5.4% by weight, polyisoptylene resin (Esso Chemical Co., Ltd. Vistanex MML80) 0.3% by weight,
A mixture of 0.3% by weight of petroleum resin (Toho Hi-Resin #75, manufactured by Toho Oil Resin Co., Ltd.) was added and thoroughly mixed at 90°C to obtain a granular explosive compound. Example 6 Fine porous brill ammonium nitrate 92 with a particle size of 1.4 mm or less
Paraffin wax (7% by weight), which was heated and melted in advance.
A mixture of 644% ethylene-vinyl acetate copolymer (Mitsui Polychemical Co., Ltd., Evaflex #250) was added and heated at 90°C. A granular explosive composition was obtained by thorough mixing.

実施例7 粒径が1. 4s+m以下の微細なボーラスブリル硝安
90重着%に、予め加熱溶解混合したバラフィンワ2ク
ス(日木精蝋(株) 130 ’ Fパラフィン)6.
0ffl1%、マイクロクリスタリンワックス(日本精
蝋(株)旧MiCl070 ) 2.5重量%、ポリエ
チレンワノクス(三洋化成工業(株)サンワックス15
1P)0.2重量%、石油樹脂(東邦石油樹脂(株)ト
ーホーハイレジン)0.3重量%、及び、エチレン酢酸
ビニル共重合体(三井ポリケミカル(株)エバフレンク
ス#250)1.0重量%の混合物を加え、90゛Cで
十分に混合して粒状爆薬組成物を得た.実施例8 粒径が1.41以下の微細なボーラスブリル硝安93.
2重量%に、予め加熱溶解混合したパラフィンワックス
(日本精!jl(株)130゜Fパラフィン)5.3重
量%とエチレン酢酸ビニル共重合体(三井ポリケミカル
(株)エバフレックス#250)0.5重量%の混合物
を加え、90゜Cで十分に混合した。この混合物を常温
迄冷却した後、フレーク状アルミニウム粉末(東洋アル
ミニウム(株) POIOO)1.0重量%を加え、十
分混合して粒状爆薬組成物を得た. 実施例9 粒径が1.4搦菖以下の微細なポーラスブリル硝安91
、4重量%に、予め加熱溶解混合したパラフィンワック
ス(日木精蝋(株)130゜Fパラフィン)5.0重量
%、石油樹脂(東邦石油樹脂(株)トホーハイレジン#
75)0.2重量%、ポリブタジエン樹脂(日本合成ゴ
ム(株) RB−810)0.2重量%、及びエチレン
酢酸ビニル共重合体(三井ボリケミカル(株)エバフレ
ンクス#250)0.2重量%の混合物を加え、90゜
Cで十分に混合した.この混合物を常温迄冷却後、アト
マイズアルミニウム粉末(山石金属(株) VA−50
0)3.0重量%を加え、十分混合して粒状爆薬組成物
を得た. 比較例1 ボーラスブリル硝安(住友化学工業(株)94重量%に
、軽油(日本石油(株)2号軽油)6.0重量%を加え
、十分混合して粒状爆薬組成物を得た.比較例2 粒径が1.41以下の微細なポーラスプリル硝安94重
量%に、軽油(日本石油(株)2号軽油)6.0重量%
を加え、十分混合して粒状爆薬組成物を得た. 比較例3 ボーラスブリル硝安(住友化学工業(株)94重量%に
、パラフィンワックス(日本精蝋(株)l3O゜Fパラ
フィン)6.0重量%を加え、90℃で十分に混合して
粒状爆薬組成物を得た. 比較例4 粒径が1.4ms以下の微細なポーラスプリル硝安94
重量%に、予め加熱溶解したパラフィンワ.ンクス(日
本精蝋(株)l30゜Fパラフィン)61i量%を加え
、90゜Cで十分に混合して粒状爆薬組成物を得た. 比較例5 粒径が1.41以下の微細なポーラスブリル硝安94重
量%に、予め加熱溶解したマイクロクリスタリンワック
ス(日本精蝋(株)Ill旧C1070) 6重量%を
加え、90゜Cで十分に混合して粒状爆薬組成物を得た
. 比較例6 粒径が1.41以下の微細なポーラスプリル硝安80重
量%と粉状硝安(宇部興産(株))14m量%の混合物
に、予め加熱溶解したバラフィンワックス(日本精蝋(
株)130゜Fパラフィン)6重量%を加え、90゜C
で十分に混合して粒状爆薬組成物を得た. 実施例1〜9、及び比較例1〜6の組成を表1にまとめ
た. 実施例1〜9、及び、比較例1〜6の爆薬組成物の流動
性、充填密度、密閉爆速及び耐水性能の諸性能を表2に
まとめた. 流動性は、目視によって、良好、やや不良、不良の三段
階に分けて評価した. 充填密度は、500mlのシリンダーに300g (w
g)の粒状爆薬を流し込み、床面から10 cmの位置
迄持ち上げ、床面にシリンダーを落下させる操作を5回
繰り返した後、粒状爆薬の占める体積( Vd)をシリ
ンダー目盛から測定し、充填密度( d g/cc)を
d=W/V の式より求めた. 密閉爆速は、内径40mm、長さ50msの鋼管に粒状
爆薬を密充填し、70gをペンイライトを伝爆薬に用い
て起爆した時の嬉速を、ドートリッシュの爆速試験法に
準じて測定した. 耐水性能は、250gの粒状爆薬をガーゼでくるみ、6
00ccの水に入ったビーカー内に30分間沈めた後、
+S薬をガーゼごと取り出し、5分間、ガーゼ内にある
液をビーカー内に自然落下させた後、ビーカー内の液を
口紙で口過した.そして、口液の比重(dsoln)を
20″Cでうきばかり計を用いて測定した.250gの
粒状爆薬が600ccの水に完全に溶解した時の溶液の
比重(dmax)と前述の口液の比重(dsoln)の
値から、溶解率(%)を以下の式より求めた.(発明の
効果) 実施例1〜7と比較例1〜3を比較すれば、ワックス類
と樹脂類の混合物を使用する事によって、通常、硝安油
剤爆薬に用いられる軽油や、ワックス類のみを可燃物に
用いる場合に比べて、耐水性能が著しく向上している事
が明白である.又、実施例1と実施例2〜5を比較すれ
ば、粒径が1.41以下の微細なポーラスプリル硝安を
使用する事によって、耐水性能が更に向上し、かつ、充
填密度、密閉爆速が増加している事が明白である.更に
、実施例工〜6と実施例7及び8を比較すれば、硝安と
ワックス類及び樹脂類の混合物に、フレク状アルミニウ
ム粉末やアトマイズアルミニウム等の金属粉末を添加す
る事によって、密閉爆速が増加し、爆発エネルギーが増
大する事は明白である. 特許出願人  日本化薬株式会社 手 続 補 正 書 平成元年3月22日
Example 7 Particle size is 1. 6. Paraffin wax (Hiki Seiro Co., Ltd. 130' F paraffin) which is heated and mixed with a fine bolus of 4s+m or less of Bryl ammonium nitrate with a weight of 90%.6.
0ffl1%, microcrystalline wax (Nippon Seiro Co., Ltd., former MiCl070) 2.5% by weight, polyethylene wanox (Sanyo Chemical Industries, Ltd.) Sunwax 15
1P) 0.2% by weight, petroleum resin (Toho Hi-Resin Co., Ltd.) 0.3% by weight, and ethylene-vinyl acetate copolymer (Mitsui Polychemical Co., Ltd. Evaflex #250) 1.0% by weight % mixture and thoroughly mixed at 90°C to obtain a granular explosive composition. Example 8 Fine bolus Bryl ammonium nitrate with a particle size of 1.41 or less 93.
2% by weight, 5.3% by weight of paraffin wax (Nippon Sei! JL Co., Ltd. 130°F paraffin) and 0% ethylene-vinyl acetate copolymer (Evaflex #250, Mitsui Polychemical Co., Ltd.), which had been heated and mixed in advance. .5% by weight of the mixture was added and thoroughly mixed at 90°C. After cooling this mixture to room temperature, 1.0% by weight of flaky aluminum powder (POIOO, Toyo Aluminum Co., Ltd.) was added and thoroughly mixed to obtain a granular explosive composition. Example 9 Fine porous brill ammonium nitrate 91 with a particle size of 1.4 irises or less
, 4% by weight, 5.0% by weight of paraffin wax (130°F paraffin manufactured by Hiki Seiro Co., Ltd.) preheated and mixed, and 5.0% by weight of petroleum resin (Toho Hiresin # manufactured by Toho Oil Resin Co., Ltd.).
75) 0.2% by weight, polybutadiene resin (Japan Synthetic Rubber Co., Ltd. RB-810) 0.2% by weight, and ethylene vinyl acetate copolymer (Mitsui Polychemical Co., Ltd. Evaflex #250) 0.2% by weight Add the mixture and mix well at 90°C. After cooling this mixture to room temperature, atomized aluminum powder (Yamaishi Metal Co., Ltd. VA-50)
0) and 3.0% by weight were added and thoroughly mixed to obtain a granular explosive composition. Comparative Example 1 6.0% by weight of light oil (Nippon Oil Co., Ltd. No. 2 light oil) was added to 94% by weight of bolus brill ammonium nitrate (Sumitomo Chemical Co., Ltd.) and thoroughly mixed to obtain a granular explosive composition. Comparison Example 2 94% by weight of fine porous sprill ammonium nitrate with a particle size of 1.41 or less and 6.0% by weight of light oil (Nippon Oil Co., Ltd. No. 2 light oil)
was added and thoroughly mixed to obtain a granular explosive composition. Comparative Example 3 6.0% by weight of paraffin wax (Nippon Seiro Co., Ltd. 130°F paraffin) was added to 94% by weight of bolus brill ammonium nitrate (Sumitomo Chemical Co., Ltd.) and thoroughly mixed at 90°C to form a granular explosive. A composition was obtained. Comparative Example 4 Fine porous sprill ammonium nitrate 94 with a particle size of 1.4 ms or less
% by weight of paraffin wax previously heated and dissolved. 61% by weight of NX (130°F paraffin manufactured by Nippon Seiro Co., Ltd.) was added and thoroughly mixed at 90°C to obtain a granular explosive composition. Comparative Example 5 6% by weight of microcrystalline wax (Nippon Seiro Co., Ltd. Ill former C1070) which had been heated and melted in advance was added to 94% by weight of fine porous Bryl ammonium nitrate with a particle size of 1.41 or less, and the temperature at 90°C was sufficient. A granular explosive composition was obtained. Comparative Example 6 A mixture of 80% by weight of fine porous sprill ammonium nitrate with a particle size of 1.41 or less and 14% by weight of powdered ammonium nitrate (Ube Industries, Ltd.) was heated and melted in advance using paraffin wax (Nippon Seiro).
Add 6% by weight of paraffin) at 130°C and heat to 90°C.
The mixture was thoroughly mixed to obtain a granular explosive composition. The compositions of Examples 1 to 9 and Comparative Examples 1 to 6 are summarized in Table 1. Table 2 summarizes the performance of the explosive compositions of Examples 1 to 9 and Comparative Examples 1 to 6, including fluidity, packing density, sealed detonation speed, and water resistance. Flowability was visually evaluated in three grades: good, somewhat poor, and poor. The packing density is 300g (w
After repeating the operation of pouring the granular explosive in g), lifting it to a position 10 cm from the floor, and dropping the cylinder on the floor 5 times, measure the volume occupied by the granular explosive (Vd) from the cylinder scale, and calculate the packing density. (d g/cc) was calculated using the formula d=W/V. The sealed detonation velocity was determined by filling a steel pipe with an inner diameter of 40 mm and a length of 50 ms with granular explosives, and detonating 70 g of Penilite as a booster explosive.The detonation velocity was measured according to Dautrich's detonation velocity test method. Water resistance: 250g of granular explosive wrapped in gauze, 6
After submerging it in a beaker containing 00cc of water for 30 minutes,
The +S drug was taken out along with the gauze, and the liquid in the gauze was allowed to fall naturally into the beaker for 5 minutes, and then the liquid in the beaker was sipped with a mouthpiece. Then, the specific gravity (dsoln) of the oral fluid was measured at 20''C using an excitation meter.The specific gravity (dmax) of the solution when 250g of granular explosive was completely dissolved in 600cc of water and From the value of specific gravity (dsoln), the dissolution rate (%) was calculated from the following formula. (Effect of the invention) Comparing Examples 1 to 7 and Comparative Examples 1 to 3, it is found that the mixture of waxes and resins It is clear that by using ammonium nitrate oil, the water resistance performance is significantly improved compared to when using only light oil or wax, which is usually used in ammonium nitrate explosives, for combustible materials. Comparing Examples 2 to 5, it is clear that by using fine porous sprill ammonium nitrate with a particle size of 1.41 or less, the water resistance performance is further improved, and the packing density and sealed detonation speed are increased. Furthermore, if we compare Examples 7 and 8 with Examples 7 and 8, we can see that by adding metal powder such as flexible aluminum powder or atomized aluminum to the mixture of ammonium nitrate, waxes, and resins, it is possible to create a hermetic seal. It is obvious that the explosion speed increases and the explosion energy increases. Patent applicant Nippon Kayaku Co., Ltd. Procedural Amendment March 22, 1989

Claims (1)

【特許請求の範囲】 1、酸化剤として、硝安、可燃物として、ワックス類と
樹脂類とを使用する事を特徴とする粒状爆薬組成物 2、硝安が、粒径が1.4mm以下のポーラスプリル硝
安である事を特徴とする特許請求の範囲第1項記載の粒
状爆薬組成物。 3、金属粉を配合する事を特徴とする特許請求の範囲第
1項及び第2項記載の粒状爆薬組成物。
[Claims] 1. A granular explosive composition characterized by using ammonium nitrate as an oxidizing agent and waxes and resins as combustible materials. 2. Ammonium nitrate is porous with a particle size of 1.4 mm or less. The granular explosive composition according to claim 1, characterized in that it is prill ammonium nitrate. 3. The granular explosive composition according to claims 1 and 2, characterized in that it contains metal powder.
JP1048610A 1989-03-02 1989-03-02 Granular explosive composition Expired - Fee Related JP2598319B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609999A (en) * 1983-06-30 1985-01-19 三井東圧化学株式会社 Paper or sheet-like substance having adsorbing property
JPS6012313A (en) * 1983-06-30 1985-01-22 Yamaha Motor Co Ltd Wire spork wheel
JPS6028795A (en) * 1983-07-26 1985-02-13 Hitachi Kiden Kogyo Ltd Stepless transmission of crane
JPS6213318A (en) * 1985-07-11 1987-01-22 Asahi Chem Ind Co Ltd Preparation of biaxially strethced polyoxymethylene film

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609999A (en) * 1983-06-30 1985-01-19 三井東圧化学株式会社 Paper or sheet-like substance having adsorbing property
JPS6012313A (en) * 1983-06-30 1985-01-22 Yamaha Motor Co Ltd Wire spork wheel
JPS6028795A (en) * 1983-07-26 1985-02-13 Hitachi Kiden Kogyo Ltd Stepless transmission of crane
JPS6213318A (en) * 1985-07-11 1987-01-22 Asahi Chem Ind Co Ltd Preparation of biaxially strethced polyoxymethylene film

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