JP2003183094A - Explosive composition - Google Patents

Explosive composition

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Publication number
JP2003183094A
JP2003183094A JP2001383616A JP2001383616A JP2003183094A JP 2003183094 A JP2003183094 A JP 2003183094A JP 2001383616 A JP2001383616 A JP 2001383616A JP 2001383616 A JP2001383616 A JP 2001383616A JP 2003183094 A JP2003183094 A JP 2003183094A
Authority
JP
Japan
Prior art keywords
ammonium nitrate
explosive
explosive composition
oil
granular ammonium
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.)
Pending
Application number
JP2001383616A
Other languages
Japanese (ja)
Inventor
Atsuya Tokita
淳哉 鴇田
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.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Corp
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 Asahi Kasei Corp filed Critical Asahi Kasei Corp
Priority to JP2001383616A priority Critical patent/JP2003183094A/en
Publication of JP2003183094A publication Critical patent/JP2003183094A/en
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide an explosive composition whose pulverization is little and whose force of explosion is strong. <P>SOLUTION: Granular ammonium nitrate whose oil absorbing rate is 18-23% and whose hardness is more than 5 and less than 9 is used for the explosive composition containing the granular ammonium nitrate. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、砕石、採掘、トン
ネル掘削などの産業発破に用いられる爆薬組成物に関す
るものである。
TECHNICAL FIELD The present invention relates to an explosive composition used for industrial blasting such as crushed stone, mining, and tunnel excavation.

【0002】[0002]

【従来の技術】粒状硝安を主成分とする爆薬組成物とし
て硝安油剤爆薬(以下ANFOと略記)がある。ANF
Oは、多くは多孔質の粒状硝安と軽油からなる簡便な爆
薬であり、簡単な装置で容易に製造できること、また流
動性に優れているため発破孔へ直接流し込み装薬が可能
であること、ANFOローダーによる装填が可能である
こと、さらに衝撃感度が低く安全であること、安価であ
ること等から広く消費されている。
2. Description of the Related Art An explosive composition containing ammonium nitrate as a main component is an ammonium nitrate oil explosive (hereinafter abbreviated as ANFO). ANF
O is a simple explosive consisting mostly of porous granular ammonium nitrate and light oil, which can be easily manufactured with a simple device, and because it has excellent fluidity, it can be directly poured into the blasting hole to charge it. It is widely consumed because it can be loaded by an ANFO loader, has low impact sensitivity, is safe, and is inexpensive.

【0003】このANFOを高威力化する方法として、
吸油率の高い粒状硝安を使用する方法がある。一般に吸
油率が高いということは、硝安内部の空隙の容積が大き
いということであり、このような粒状硝安を使用するこ
とにより、爆薬の反応性が高まり、威力が増大すること
が知られている。しかし、従来の吸油率の高い粒状硝安
は、硬度が低いため崩れ易く、粉化し易かった。従っ
て、吸油率の高い粒状硝安を用いると、爆薬製造時や製
品運搬時、ANFOローダーでの装薬時等に粉化が生
じ、製造性や取り扱い性に支障を来たす。また、嵩比重
が増大するため、発破孔への装薬量が増加し、爆薬コス
トが増大するという問題があった。さらに、吸油率の高
い粒状硝安は爆薬の反応性を向上させると同時に衝撃感
度も増大させるという問題があった。例えば、ANFO
においては日本工業規格K4810に規定されている塩
ビ法やカートン法において不合格になることがあるとい
う問題があった。
As a method of enhancing the power of this ANFO,
There is a method of using granular ammonium nitrate having a high oil absorption rate. Generally, a high oil absorption rate means that the volume of voids inside the ammonium nitrate is large, and it is known that the use of such granular ammonium nitrate increases the reactivity of the explosive and increases the power. . However, conventional granular ammonium nitrate having a high oil absorption rate is easily broken and pulverized due to its low hardness. Therefore, when granular sodium nitrate having a high oil absorption rate is used, powdering occurs during the production of explosives, the transportation of products, the charging with an ANFO loader, etc., and the productivity and handleability are hindered. Further, since the bulk specific gravity is increased, there is a problem that the amount of charge to the blast hole is increased and the explosive charge cost is increased. Further, granular ammonium nitrate having a high oil absorption has a problem that the reactivity of the explosive is improved and at the same time the impact sensitivity is increased. For example, ANFO
However, there is a problem in that the PVC method or the carton method defined in Japanese Industrial Standard K4810 may fail.

【0004】[0004]

【発明が解決しようとする課題】本発明は、前記従来技
術の粒状硝安が粉化し易く、感度が増加するという問題
を解決し、高威力、低感度でかつ粉化しにくい爆薬組成
物を提供することを目的としたものである。
DISCLOSURE OF THE INVENTION The present invention solves the problems that the above-mentioned prior art granular ammonium nitrate is easily pulverized and the sensitivity is increased, and provides an explosive composition having high power, low sensitivity and hardly pulverized. This is the purpose.

【0005】[0005]

【課題を解決するための手段】本発明者は、前記課題を
解決するために鋭意研究を行った結果、粒状硝安を含む
爆薬組成物において、(1)吸油率が高く、かつ硬度の
高い粒状硝安を使用すれば、威力が高く、かつ粉化が生
じにくくなる、(2)平均粒径の小さい粒状硝安を使用
すると、威力が向上する、(3)爆薬100g当たりの
酸素バランスを調整すると感度が低下することを見出し
本発明を完成するに至った。
Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have found that in an explosive composition containing granular ammonium nitrate, (1) granular particles having a high oil absorption and a high hardness are used. The use of ammonium nitrate is highly effective and less likely to be pulverized. (2) The use of granular ammonium nitrate having a small average particle size improves the power. (3) Sensitivity is obtained by adjusting the oxygen balance per 100 g of explosive. The present invention has been completed by discovering that the above decrease.

【0006】すなわち本発明の態様は、次の通りであ
る。 (1) 吸油率が18〜23%で、硬度が5を超えて9
未満の粒状硝安を含む爆薬組成物。 (2) 粒状硝安の平均粒径が1〜2mmである上記
(1)に記載の爆薬組成物。 (3) 油剤を含んでなる上記(1)または(2)に記
載の爆薬組成物。 (4) 爆薬組成物が硝安油剤爆薬である上記(1)〜
(3)のいずれかに記載の爆薬組成物。 (5) 爆薬100g当たりの酸素バランスが、0〜―
11gである請求項上記(1)〜(4)のいずれかに記
載の爆薬組成物。 (6) 無機低比重物を添加した上記(1)〜(5)の
いずれかに記載の爆薬組成物。 (7) グアガムかつ/またはローカストビーンガムを
添加した請求項1〜6のいずれかに記載の爆薬組成物。
That is, the aspects of the present invention are as follows. (1) Oil absorption is 18 to 23% and hardness exceeds 5 and 9
An explosive composition comprising less than ammonium nitrate. (2) The explosive composition according to (1) above, wherein the average particle size of the granular ammonium nitrate is 1 to 2 mm. (3) The explosive composition according to (1) or (2) above, which comprises an oil agent. (4) The above (1) to which the explosive composition is an ammonium nitrate oil explosive.
The explosive composition according to any one of (3). (5) Oxygen balance per 100g of explosive is 0-
It is 11 g, The explosive composition in any one of said (1)-(4). (6) The explosive composition according to any one of the above (1) to (5), wherein an inorganic low specific gravity material is added. (7) The explosive composition according to any one of claims 1 to 6, to which guar gum and / or locust bean gum is added.

【0007】以下、本発明について具体的に説明する。
本発明における爆薬組成物において、吸油率が18%以
上の粒状硝安を用いると爆薬組成物の威力が向上する
が、23%を超えると粒状硝安内の空隙が増加するた
め、硬度が低下し、粉化しやすくなる。高威力かつ粉化
をし難い粒状硝安の吸油率は18〜23%で硬度は9未
満が望ましい。硬度が5以下の硝安で吸油率が18以上
のものを製造することは一般に困難な場合が多い。粒状
硝安のより好ましい吸油率は18%を超えて20%未満
である。
The present invention will be specifically described below.
In the explosive composition of the present invention, when granular ammonium nitrate having an oil absorption rate of 18% or more is used, the power of the explosive composition is improved, but when it exceeds 23%, the voids in the granular ammonium nitrate increase, so that the hardness decreases, It becomes easy to pulverize. It is preferable that granular ammonium nitrate, which has high power and is hard to be pulverized, has an oil absorption of 18 to 23% and a hardness of less than 9. It is generally difficult in many cases to produce a product having a hardness of 5 or less and an oil absorption of 18 or more. The more preferable oil absorption rate of granular ammonium nitrate is more than 18% and less than 20%.

【0008】本発明における粒状硝安の吸油率は、粒状
硝安をガラスフィルターに入れて2号軽油を加えた時
の、粒状硝安に吸着した2号軽油の外割重量%である。
詳しくは、まず予め重量をはかっておいた直径40mm
φ、内容量60ccのブフナーロート型ガラスフィルタ
ーにフィルター板上面から40mmの高さまで粒状硝安
を入れて全体重量を測る。次いで、ガラスフィルターの
先にピンチコックで穴を塞いだゴム管を装着し、粒状硝
安が完全に沈むまで2号軽油を加えて5分間放置する。
放置後、ゴム管を外して2号軽油を2分間自然落下さ
せ、真空ポンプをつないで5分間吸引する。吸引終了
後、真空ポンプから取り外して全体重量をはかり、以下
に示す式より吸油量を算出する。 吸油量(外割重量(%))=(W2−(W1−W0)−
W0−0.1)/(W1−W0)×100(%) この式におけるW0はガラスフィルターの重量(g)、
W1は粒状硝安を入れた時の全体重量(g)、W2は真
空ポンプ吸引後にはかった全体重量(g)であり、0.
1はガラスフィルターの壁面に付着する2号軽油の補正
値である。
The oil absorption rate of the granular ammonium sulfate in the present invention is the outer weight% of the No. 2 diesel oil adsorbed on the granular ammonium sulfate when the granular ammonium sulfate is put in a glass filter and No. 2 diesel oil is added.
For details, first weigh 40mm in diameter.
Granular ammonium nitrate is put into a Buchner-Rot type glass filter having a diameter of 60 cc and a capacity of 60 cc from the upper surface of the filter plate to a height of 40 mm, and the total weight is measured. Next, a rubber tube whose hole was closed with a pinch cock was attached to the end of the glass filter, No. 2 light oil was added until the granular ammonium nitrate completely set, and the mixture was allowed to stand for 5 minutes.
After standing, remove the rubber tube, let the No. 2 diesel oil fall naturally for 2 minutes, connect a vacuum pump and suck for 5 minutes. After the suction is completed, the suction pump is removed from the vacuum pump, the total weight is measured, and the oil absorption amount is calculated by the following formula. Oil absorption (outer weight (%)) = (W2- (W1-W0)-
W0-0.1) / (W1-W0) * 100 (%) W0 in this formula is the weight (g) of the glass filter,
W1 is the total weight (g) when granular ammonium nitrate was added, W2 is the total weight (g) measured after the vacuum pump suctioned, and
1 is a correction value for No. 2 diesel fuel attached to the wall surface of the glass filter.

【0009】粒状硝安の硬度は、一定量の粒状硝安を硬
度測定装置で機械的に圧潰し、篩い分けした時の篩を通
った重量%である。測定装置は、直径200mmφの回
転する受け皿と直径190mmφの回転しない挽き皿
(重量1715g)から成る。所定の篩で粉末を除いた
試料硝安50gを受け皿に均一に拡げ、挽き皿を重ねて
受け皿を一定時間回転後、試料を所定の篩に入れ、振盪
機を使用し、1分間振盪させる。篩を通過した試料を秤
量し、元の粒状硝安50gに対する圧潰量(g)の比率
(%)を硬度(%)とする。計算式は硬度(%)=圧潰
量(g)/試料50g×100(%)である。
The hardness of the granular ammonium sulfate is the weight% of the powder passed through the sieve when a certain amount of granular ammonium sulfate is mechanically crushed by a hardness measuring device and sieved. The measuring device consists of a rotating pan with a diameter of 200 mmφ and a non-rotating grinder with a diameter of 190 mmφ (weight 1715 g). 50 g of sample ammonium nitrate excluding powder with a predetermined sieve is evenly spread on a pan, a grinding plate is overlaid, the pan is rotated for a certain period of time, the sample is put on a predetermined screen, and shaken for 1 minute using a shaker. The sample that has passed through the sieve is weighed, and the ratio (%) of the crushed amount (g) to the original 50 g of granular ammonium nitrate is defined as the hardness (%). The calculation formula is hardness (%) = crush amount (g) / sample 50 g × 100 (%).

【0010】また、本発明の爆薬組成物において、硝安
粒子の平均粒径は小さくなるほど、威力が向上する傾向
がある。これは、硝安粒子間の空隙が小さくなるため、
爆轟反応中のエネルギー伝播効率が向上するためと考え
られる。硝安粒子の平均粒径は、1〜2mmであること
が望ましい。粒状硝安の平均粒径はメディアン径(50
%粒径)のことである。詳しくは、一定量の硝安を目開
きの異なる各種篩を通し、各篩に残った試料重量から、
累積粒度分布曲線を作成し、累積重量が試料全重量の5
0%となる粒径のことである。
In the explosive composition of the present invention, the smaller the average particle size of ammonium nitrate particles, the more the power tends to improve. This is because the voids between ammonium nitrate particles are small,
This is probably because the energy transmission efficiency during the detonation reaction is improved. The average particle size of ammonium nitrate particles is preferably 1 to 2 mm. The average particle size of granular ammonium nitrate is 50
% Particle size). Specifically, a certain amount of ammonium nitrate is passed through various sieves with different openings, and from the weight of the sample remaining on each sieve,
A cumulative particle size distribution curve is created and the cumulative weight is 5 of the total weight of the sample.
The particle size is 0%.

【0011】本発明の爆薬組成物に用いられる燃料は、
液状の油剤が望ましい。これは液状の油剤の場合、油剤
が硝安内部まで含浸するため、固体の燃料を用いるより
粒状硝安との混合性が良くなり、反応性が高くなるため
である。液状の油剤としては、例えば軽油、灯油、重
油、スピンドル油、パラフィンオイル等の鉱物油や植物
油等が使用できるが、低粘度で硝安内部に含浸し易く、
安価である軽油のようなものが望ましい。
The fuel used in the explosive composition of the present invention is
A liquid oil agent is desirable. This is because, in the case of a liquid oil agent, the oil agent is impregnated into the inside of ammonium nitrate, so that the mixture with the granular ammonium nitrate is better and reactivity is higher than when using a solid fuel. As the liquid oil agent, for example, mineral oil such as light oil, kerosene, heavy oil, spindle oil, paraffin oil or vegetable oil can be used, but it has a low viscosity and is easily impregnated inside the ammonium nitrate,
It is desirable to use something like light oil, which is cheap.

【0012】本発明における爆薬組成物は、硝安油剤爆
薬であることが望ましい。粒状硝安と引火点50℃以上
の油剤を混合し、起爆感度と爆轟速度の条件を満たせ
ば、硝安油剤爆薬として扱われる。また、本発明の爆薬
組成物において、爆薬100g当たりの酸素バランスが
負になると感度が低下するが、―11gより負になると
威力が低下してしまう。爆薬100g当たりの酸素平衡
値は0〜―11gであることが望ましい。より望ましい
酸素平衡値は3.4〜―11gであり、更に望ましくは
3.4〜―9gである。爆薬の酸素平衡値とは、例え
ば、平成11年日本火薬工業会資料編集部により発行さ
れた「一般火薬学」9〜12頁に述べられているよう
に、100gの爆薬に含まれている可燃性成分が完全燃
焼するための酸素の過不足量をgで表した数値である。
The explosive composition in the present invention is preferably an ammonium nitrate oil explosive. If granular ammonium nitrate and an oil agent with a flash point of 50 ° C or higher are mixed and the conditions of detonation sensitivity and detonation speed are satisfied, it is treated as an ammonium nitrate oil explosive. Further, in the explosive composition of the present invention, the sensitivity decreases when the oxygen balance per 100 g of the explosive becomes negative, but the power decreases when it becomes negative than -11 g. The oxygen equilibrium value per 100 g of explosive is preferably 0 to -11 g. The more desirable oxygen equilibrium value is 3.4 to -11 g, and further desirably 3.4 to -9 g. The oxygen equilibrium value of explosive is, for example, as described in "General Explosives", pages 9 to 12 published by the Japan Explosives Industry Association Material Editing Department in 1999, the flammability contained in 100 g of explosives. This is a numerical value in g, which represents the excess or deficiency of oxygen for the complete burning of the sexual component.

【0013】本発明の爆薬組成物には、爆薬の低比重化
のため低比重固体物質を添加することができる。低比重
固体物質には、発泡スチロールなどの有機低比重物質、
パーライト、シラスバルーン、バーミキュライト、アタ
パルジャイトなどの無機低比重物質がある。これらの一
種類以上を添加するとよい。無機低比重物質は、安価で
入手しやすく、貯蔵時に爆薬成分と反応することがほと
んどないので経時安定性に優れ良い。シラスバルーン、
アタパルジャイトは硬度が高く優れている。無機低比重
物質の嵩比重は、0.1〜0.65のものが良く、更に
よくは0.2〜0.6のものが良い。添加量は0を超え
て35未満重量%が良く、更によくは5〜30重量%が
良い。
A solid material having a low specific gravity can be added to the explosive composition of the present invention in order to reduce the specific gravity of the explosive. Low specific gravity solid substances include organic low specific gravity substances such as Styrofoam,
There are inorganic low specific gravity substances such as perlite, shirasu balloon, vermiculite and attapulgite. It is advisable to add one or more of these. Inorganic low specific gravity substances are inexpensive, easily available, and hardly react with explosive components during storage, and thus have excellent stability over time. Shirasu balloon,
Attapulgite is excellent in hardness and hardness. The bulk specific gravity of the inorganic low specific gravity substance is preferably 0.1 to 0.65, and more preferably 0.2 to 0.6. The addition amount is preferably more than 0 and less than 35% by weight, and more preferably 5 to 30% by weight.

【0014】また、本発明の爆薬組成物には耐水性を付
与するため増粘剤を添加することができる。増粘剤は、
グアガムや冷水可溶型のローカストビーンガムが良く、
特にグアガムが安価で良い。増粘剤粒子の粒径は、10
0um以下のものが良く、0.2重量%水溶液の20℃
における粘度は20mPa・s以上のものが良い。爆薬
組成物への添加量は0を超えて12未満%が良く、更に
よくは2〜10%が良い。本発明の爆薬組成物は、耐ブ
ロッキング剤、及び流動性向上剤として炭酸カルシウ
ム、シリカ、タルク、カーボンブラック、またはグラフ
ァイト、金属酸化物が使用できる。
A thickener may be added to the explosive composition of the present invention to impart water resistance. The thickener is
Gua gum and cold water soluble locust bean gum are good,
Especially guar gum is cheap and good. The particle size of the thickener particles is 10
0um or less is preferable, 0.2% by weight aqueous solution at 20 ° C
The viscosity at 20 mPa · s or more is preferable. The amount added to the explosive composition is preferably more than 0 and less than 12%, and more preferably 2 to 10%. In the explosive composition of the present invention, calcium carbonate, silica, talc, carbon black, graphite, or a metal oxide can be used as a blocking resistance agent and a fluidity improver.

【0015】[0015]

【発明の実施の形態】以下、本発明について更に実施例
を用いて説明する。本発明は、これらの具体例によって
限定されるものではない。表1は、実施例と比較例の実
験条件と実験結果を比較してまとめたものである。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with reference to Examples. The present invention is not limited to these specific examples. Table 1 is a summary of the experimental conditions and experimental results of the examples and comparative examples.

【0016】[0016]

【実施例1】表1に示すように、粒状硝安93重量%と
2号軽油7重量%を均一に混合し、この爆薬組成物を後
述の試験法により評価を行った。
Example 1 As shown in Table 1, 93% by weight of granular ammonium nitrate and 7% by weight of No. 2 light oil were uniformly mixed, and the explosive composition was evaluated by the test method described below.

【0017】[0017]

【実施例2】表1に示すように、粒状硝安93重量%と
2号軽油7重量%を均一に混合し、この爆薬組成物を後
述の試験法により評価を行った。
Example 2 As shown in Table 1, 93 wt% of granular ammonium nitrate and 7 wt% of No. 2 light oil were uniformly mixed, and the explosive composition was evaluated by the test method described below.

【0018】[0018]

【実施例3】表1に示すように、粒状硝安83.7重量
%と2号軽油5.3重量%を均一に混合後、シラスバル
ーン(粒径0.85〜1.4mm、嵩比重0.23)を
11.0重量%添加し、均一に分散するまで混合した。
これらの爆薬組成物を後述の試験法により評価を行っ
た。
Example 3 As shown in Table 1, 83.7% by weight of granular ammonium nitrate and 5.3% by weight of No. 2 light oil were uniformly mixed, and then shirasu balloon (particle size 0.85 to 1.4 mm, bulk specific gravity 0) .23) was added and mixed until uniformly dispersed.
These explosive compositions were evaluated by the test methods described below.

【0019】[0019]

【実施例4】表1に示すように、粒状硝安72.3重量
%と2号軽油4.6重量%を均一に混合後、アタパルジ
ャイト(粒径0.5〜1.00mm、嵩比重0.47)
を23.1重量%添加し、均一に分散するまで混合し
た。これらの爆薬組成物を後述の試験法により評価を行
った。
Example 4 As shown in Table 1, 72.3% by weight of granular ammonium nitrate and 4.6% by weight of No. 2 light oil were uniformly mixed, and then, attapulgite (particle size 0.5 to 1.00 mm, bulk specific gravity of 0. 47)
23.1% by weight was added and mixed until uniformly dispersed. These explosive compositions were evaluated by the test methods described below.

【0020】[0020]

【実施例5】表1に示すように、粒状硝安90.5重量
%とグアガム(メイホール社製メイプログアーCSA2
00/50)6重量%均一に混合した後、2号軽油3.
5重量%を添加し、均一に分散するまで混合した。これ
らの爆薬組成物を後述の試験法により評価を行った。
[Example 5] As shown in Table 1, 90.5% by weight of granular ammonium sulfate and guar gum (Maple Guar CSA2 manufactured by Mayhall Co., Ltd.)
(00/50) 6% by weight, and then mixed homogeneously with No. 2 diesel oil 3.
5% by weight was added and mixed until uniformly dispersed. These explosive compositions were evaluated by the test methods described below.

【0021】[0021]

【比較例1】表1に示すように、実施例1、実施例2と
異なる吸油率または硬度の粒状硝安94重量%と2号軽
油6重量%を均一に混合した。これらの爆薬組成物を後
述の試験法により評価を行った。
Comparative Example 1 As shown in Table 1, 94% by weight of granular ammonium nitrate having an oil absorption rate or hardness different from those of Examples 1 and 2 and 6% by weight of No. 2 light oil were uniformly mixed. These explosive compositions were evaluated by the test methods described below.

【0022】[0022]

【比較例2】表1に示すように、実施例1、実施例2と
異なる吸油率または硬度の粒状硝安94重量%と2号軽
油6重量%を均一に混合した。これらの爆薬組成物を後
述の試験法により評価を行った。
Comparative Example 2 As shown in Table 1, 94% by weight of granular ammonium nitrate having an oil absorption rate or hardness different from those of Examples 1 and 2 and 6% by weight of No. 2 light oil were uniformly mixed. These explosive compositions were evaluated by the test methods described below.

【0023】[0023]

【比較例3】表1に示すように、実施例1、実施例2と
異なる吸油率または硬度の粒状硝安94重量%と2号軽
油6重量%を均一に混合した。これらの爆薬組成物を後
述の試験法により評価を行った。
Comparative Example 3 As shown in Table 1, 94% by weight of granular ammonium nitrate having an oil absorption or hardness different from those in Examples 1 and 2 and 6% by weight of No. 2 light oil were uniformly mixed. These explosive compositions were evaluated by the test methods described below.

【0024】[0024]

【爆轟速度測定】爆轟速度の測定は、JISのK481
0の火薬類性能試験法に規定されている爆速試験、光フ
ァイバー法に従った。なお、ブースターとして2号榎ダ
イナマイト30gを使用した。
[Measurement of detonation speed] K481 of JIS is used for measurement of detonation speed.
The explosive speed test and optical fiber method stipulated in No. 0 explosives performance test method were followed. In addition, No. 2 Enoki dynamite 30g was used as a booster.

【0025】[0025]

【起爆感度試験】起爆感度の測定は、JISのK481
0の火薬類性能試験法に規定されている硝安油剤爆薬の
起爆感度試験方法A(塩ビ法)に従い、6号電気***で
起爆した。
[Detonation sensitivity test] The detonation sensitivity is measured by JIS K481.
In accordance with the detonation sensitivity test method A (PVC method) of an ammonium nitrate oil explosive specified in the No. 0 explosives performance test method, a No. 6 electric detonator was used for detonation.

【0026】[0026]

【粉化確認試験】粉化率は、試料ANFOをANFOロ
ーダーで排出したときに粉化した量から求めた。詳しく
は、目開き0.85mmの篩で粉末を除いた試料ANF
Oをホース長10mのANFOローダーで排出し、排出
された試料を目開き0.85mmの篩に通し、篩を通過
した試料重量を測定し、元の粒状硝安10kgに対する
粉化硝安(kg)の比率(%)を粉化率(%)とした。
計算式は粉化率(%)=粉化量(kg)/試料10kg
×100(%)である。
[Pulverization confirmation test] The pulverization rate was obtained from the amount of pulverized sample ANFO when it was discharged by the ANFO loader. For more details, sample ANF with powder removed by 0.85 mm sieve
O was discharged with an ANFO loader with a hose length of 10 m, the discharged sample was passed through a sieve with 0.85 mm openings, and the weight of the sample that passed through the sieve was measured. The ratio (%) was defined as the pulverization rate (%).
The calculation formula is pulverization rate (%) = pulverization amount (kg) / 10 kg of sample
It is × 100 (%).

【0027】[0027]

【表1】 [Table 1]

【0028】表1より、実施例1、実施例2において
は、粉化が生じにくく、威力が高いことが分かる。ま
た、感度も低く合格した。実施例3、実施例4、実施例
5では、それぞれシラスバルーン、アタパルジャイト、
グアガムの添加によって爆轟速度が低下したが、安価な
低比重化、耐水性の付与は達成された。比較例1、比較
例2、比較例3においては、粉化率が増大したり、爆轟
速度が低下したりした。
From Table 1, it can be seen that in Examples 1 and 2, pulverization is unlikely to occur and the power is high. Also, the sensitivity was low and it passed. In Examples 3, 4 and 5, Shirasu balloon, attapulgite,
The addition of guar gum reduced the detonation speed, but at the same time, it achieved inexpensive low specific gravity and water resistance. In Comparative Example 1, Comparative Example 2 and Comparative Example 3, the pulverization rate increased and the detonation speed decreased.

【0029】[0029]

【発明の効果】本発明は、硝安粒子の粉化と感度増加の
問題を解決し、高威力の爆薬組成物を得たものである。
INDUSTRIAL APPLICABILITY The present invention solves the problems of pulverization of ammonium nitrate particles and increase in sensitivity, and provides an explosive composition with high power.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成14年2月5日(2002.2.5)[Submission date] February 5, 2002 (2002.2.5)

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0012[Correction target item name] 0012

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0012】本発明における爆薬組成物は、硝安油剤爆
薬であることが望ましい。粒状硝安と引火点50℃以上
の油剤を混合し、起爆感度と爆轟速度の条件を満たせ
ば、硝安油剤爆薬として扱われる。また、本発明の爆薬
組成物において、爆薬100g当たりの酸素バランスが
負になると感度が低下するが、―11gより負になると
威力が低下してしまう。爆薬100g当たりの酸素平衡
値は0〜―11gであることが望ましい。より望ましい
酸素平衡値は―3.4〜―11gであり、更に望ましく
―3.4〜―9gである。爆薬の酸素平衡値とは、例
えば、平成11年日本火薬工業会資料編集部により発行
された「一般火薬学」9〜12頁に述べられているよう
に、100gの爆薬に含まれている可燃性成分が完全燃
焼するための酸素の過不足量をgで表した数値である。
The explosive composition in the present invention is preferably an ammonium nitrate oil explosive. If granular ammonium nitrate and an oil agent with a flash point of 50 ° C or higher are mixed and the conditions of detonation sensitivity and detonation speed are satisfied, it is treated as an ammonium nitrate oil explosive. Further, in the explosive composition of the present invention, the sensitivity decreases when the oxygen balance per 100 g of the explosive becomes negative, but the power decreases when it becomes negative than -11 g. The oxygen equilibrium value per 100 g of explosive is preferably 0 to -11 g. The more desirable oxygen equilibrium value is -3.4 to -11 g, and more desirably -3.4 to -9 g. The oxygen equilibrium value of explosive is, for example, as described in "General Explosives", pages 9 to 12 published by the Japan Explosives Industry Association Material Editing Department in 1999, the flammability contained in 100 g of explosives. This is a numerical value in g, which represents the excess / deficiency of oxygen for the complete burning of the sexual component.

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 吸油率が18〜23%で、硬度が5を超
えて9未満の粒状硝安を含む爆薬組成物。
1. An explosive composition containing granular ammonium nitrate having an oil absorption of 18 to 23% and a hardness of more than 5 and less than 9.
【請求項2】 粒状硝安の平均粒径が1〜2mmである
請求項1に記載の爆薬組成物。
2. The explosive composition according to claim 1, wherein the average particle size of the granular ammonium nitrate is 1 to 2 mm.
【請求項3】 油剤を含んでなる請求項1または2に記
載の爆薬組成物。
3. The explosive composition according to claim 1, which comprises an oil agent.
【請求項4】 爆薬組成物が硝安油剤爆薬である請求項
1〜3のいずれかに記載の爆薬組成物。
4. The explosive composition according to claim 1, wherein the explosive composition is an ammonium nitrate oil explosive.
【請求項5】 爆薬100g当たりの酸素バランスが、
0〜―11gである請求項1〜4のいずれかに記載の爆
薬組成物。
5. The oxygen balance per 100 g of explosive is
The explosive composition according to any one of claims 1 to 4, which is 0 to -11 g.
【請求項6】 無機低比重物を添加した請求項1〜5の
いずれかに記載の爆薬組成物。
6. The explosive composition according to claim 1, wherein an inorganic low specific gravity material is added.
【請求項7】 グアガムかつ/またはローカストビーン
ガムを添加した請求項1〜6のいずれかに記載の爆薬組
成物。
7. The explosive composition according to claim 1, further comprising guar gum and / or locust bean gum.
JP2001383616A 2001-12-17 2001-12-17 Explosive composition Pending JP2003183094A (en)

Priority Applications (1)

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JP2001383616A JP2003183094A (en) 2001-12-17 2001-12-17 Explosive composition

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Application Number Priority Date Filing Date Title
JP2001383616A JP2003183094A (en) 2001-12-17 2001-12-17 Explosive composition

Publications (1)

Publication Number Publication Date
JP2003183094A true JP2003183094A (en) 2003-07-03

Family

ID=27593609

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2003183094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005139036A (en) * 2003-11-07 2005-06-02 Nippon Koki Co Ltd Insensible high-power non-gunpowder crushing agent
CN103896695A (en) * 2012-12-30 2014-07-02 南京理工大学 Microporous pelletal ammonium nitrate and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005139036A (en) * 2003-11-07 2005-06-02 Nippon Koki Co Ltd Insensible high-power non-gunpowder crushing agent
CN103896695A (en) * 2012-12-30 2014-07-02 南京理工大学 Microporous pelletal ammonium nitrate and preparation method thereof
CN103896695B (en) * 2012-12-30 2016-04-20 南京理工大学 Many micropores spherulitic ammonium nitrate and method for making thereof

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