JP2000185994A - Production of granular ammonium nitrate - Google Patents
Production of granular ammonium nitrateInfo
- Publication number
- JP2000185994A JP2000185994A JP36228698A JP36228698A JP2000185994A JP 2000185994 A JP2000185994 A JP 2000185994A JP 36228698 A JP36228698 A JP 36228698A JP 36228698 A JP36228698 A JP 36228698A JP 2000185994 A JP2000185994 A JP 2000185994A
- Authority
- JP
- Japan
- Prior art keywords
- ammonium nitrate
- fine powder
- boric acid
- endothermic substance
- fine
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/18—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、隧道掘進、採石、
採鉱、採岩等の産業用爆破作業に汎く利用される爆薬に
好適に用いることのできる硝安に関する。TECHNICAL FIELD The present invention relates to tunnel excavation, quarrying,
The present invention relates to nitrite that can be suitably used for explosives widely used in industrial blasting operations such as mining and rock mining.
【０００２】[0002]
【従来の技術】硝安は、爆薬中の酸化剤としては価格が
安く、しかも化学的に安定で有用な製品として広く用い
られている。この硝安の製法としては、通常９４〜９６
重量％に調整された硝安水溶液を多孔板より噴霧させ、
塔内で冷却固化させて得られる含水率３〜４重量％の球
状硝安に、脂肪族アルキルアミン塩水溶液を噴霧後乾燥
し、さらに固結防止剤を添加して製品としている。BACKGROUND OF THE INVENTION Ammonium is widely used as an oxidizing agent in explosives because it is inexpensive and chemically stable and useful. The production method of this nitrate is usually 94 to 96
Spray the ammonium nitrate aqueous solution adjusted to weight% from the perforated plate,
An aqueous solution of an aliphatic alkylamine salt is sprayed onto spherical ammonium nitrate having a water content of 3 to 4% by weight, which is obtained by cooling and solidifying in a tower, and then dried.
【０００３】硝安はII−Ｖ形式及びIII−IV形式の結晶
変態の転移を生ずることが知られ、II−IV形式の転移温
度は４５〜５１℃である。この結晶変態により粒状の硝
安の粗大粒子が一部崩壊して微細粒子あるいはダストを
発生させるという問題が知られ、これに対して結晶変態
の転移に対する感度を低下させる為、特公昭４６−４４
５２号公報ではホウ酸、リン酸水素アンモニウム及び硫
安を溶融硝安液に溶解後、造粒製造する方法を開示して
いる。Nitric acid is known to cause II-V and III-IV transformations, with II-IV transition temperatures of 45-51 ° C. This crystal transformation is known to cause a problem that the coarse particles of granular nitrate partially disintegrate to generate fine particles or dust. On the other hand, the sensitivity to the transformation of the crystal transformation is lowered.
No. 52 discloses a method for producing granules after dissolving boric acid, ammonium hydrogen phosphate and ammonium sulfate in a molten ammonium nitrate solution.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
方法では、爆薬の酸化剤として用いた場合の爆速が低下
することがある。また、特に爆薬の酸化剤として用いら
れる硝安には固結防止や熱的安定性の向上が求められて
いる。より具体的には製造、包装後の硝安が、特に夏場
固結するというようなことは防止されなければならな
い。従って、爆速の低下を生ずることなく固結防止効果
を上げることが望まれる。本発明は、これらの課題を解
決することを目的とするものである。However, in the above method, the explosion velocity when used as an oxidizing agent for explosives may be reduced. In particular, ammonium nitrate used as an oxidizing agent for explosives is required to prevent caking and improve thermal stability. More specifically, it is necessary to prevent ammonium nitrate after production and packaging from solidifying, particularly in summer. Therefore, it is desired to improve the effect of preventing consolidation without lowering the explosion velocity. An object of the present invention is to solve these problems.
【０００５】[0005]
【課題を解決するための手段】本発明者らは上記課題に
鑑みて鋭意検討を重ねた結果、特定の物質を硝安粒子の
表面に付着させることにより固結が防止され、かつ熱的
安定性が向上することが判明した。すなわち、本発明
は、硝安粒子に吸熱物質を付着させることを特徴とする
粒状硝安の製造方法に存する。The present inventors have conducted intensive studies in view of the above-mentioned problems, and as a result, it has been found that caking is prevented by adhering a specific substance to the surface of ammonium nitrate particles, and thermal stability is reduced. Was found to improve. That is, the present invention resides in a method for producing granular ammonium nitrate, which comprises adhering an endothermic substance to ammonium nitrate particles.
【０００６】[0006]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明では粒状の硝安に、吸熱物質を付着させることを
特徴としている。粒状の硝安自体の製造は、従来より知
られている各種の方法を採用して行えばよい。具体的に
は、溶融硝安水溶液を噴射造粒装置（プリリング・グラ
ニュレーター又はプリリング・タワー）を通して造粒す
る造粒工程、必要に応じて粒径調整を行う粒度調整工
程、さらに乾燥及び冷却工程を経て、固結防止剤を添加
して粒状硝安を製造する方法が代表的であり、このよう
にしてポーラスな比較的粒径の大きな粒状の、いわゆる
ポーラスプリル硝安を得ることができる。ポーラスプリ
ル硝安としては、通常、平均粒径１．０〜２．０ｍｍ程
度、吸油率が８〜１２％程度のものが好適に使用され
る。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The present invention is characterized in that an endothermic substance is attached to granular ammonium nitrate. The production of granular ammonium nitrate itself may be performed by using various methods known in the art. Specifically, a granulating step of granulating the molten ammonium nitrate aqueous solution through an injection granulating apparatus (a pre-ring granulator or a pre-ring tower), a particle size adjusting step of adjusting the particle diameter as necessary, and further a drying and cooling step. After that, a method of producing granular ammonium nitrate by adding an anti-caking agent is typical. In this way, a porous so-called porous prill ammonium nitrate having a relatively large particle diameter can be obtained. As the porous prill nitrate, one having an average particle size of about 1.0 to 2.0 mm and an oil absorption of about 8 to 12% is usually suitably used.
【０００７】本発明における吸熱物質としては、具体的
には、ホウ酸、硫酸アルミニウム、硫酸カルシウム、硫
酸マグネシウム、炭酸マグネシウム、炭酸ナトリウム等
及びこれらの水和物、リン酸アンモニウム塩、硫酸アン
モニウム塩等のアンモニウム塩、炭酸ガス放出により吸
熱反応を生ずる炭酸カルシウム等の炭酸塩が挙げられ
る。これらの物質は３０℃から９００℃にかけての昇温
工程で吸熱反応を起こすものである。このような条件下
で吸熱反応が起こることにより熱的安定性が向上するも
のと考えられる。これらの物質の形態は特に限定されな
いが、プロセス上、望ましくは粉末状態とするのが良
い。これらの吸熱物質の中では、得られる硝安の物性
上、特にホウ酸が好ましい。Specific examples of the endothermic substance in the present invention include boric acid, aluminum sulfate, calcium sulfate, magnesium sulfate, magnesium carbonate, sodium carbonate and the like, and hydrates thereof, ammonium phosphate salts, ammonium sulfate salts and the like. Examples thereof include ammonium salts and carbonates such as calcium carbonate which cause an endothermic reaction upon release of carbon dioxide gas. These substances cause an endothermic reaction in the temperature raising step from 30 ° C. to 900 ° C. It is considered that the endothermic reaction occurs under such conditions to improve the thermal stability. The form of these substances is not particularly limited, but is preferably in a powder state in the process. Among these endothermic substances, boric acid is particularly preferred in view of the physical properties of the obtained ammonium nitrate.
【０００８】添加方法は硝安の表面に吸熱物質が付着す
る方法であれば特に限定されないが、例えば、硝安に微
粉末状の吸熱物質を回転ドラム内で混合して付着させる
といった方法が挙げられ、特に吸熱物質が硝安粒子の表
面に均一に付着される方法が望ましい。添加量は限定さ
れないが、通常、硝安１００重量部に対して０．１重量
部〜２重量部である。０．１重量部未満では効果の発揮
が充分でない場合がある。一方、２重量部も添加すれば
効果の発現には充分であるし、場合によっては爆速の低
下をもたらす。吸熱物質としては、硝安粒子の表面への
均等付着及び付着力強化のため、微粉末であることが好
ましく、平均粒径で、通常１２０μｍ以下、好ましくは
１００μｍ以下に粉砕された微粉末を使用することが望
ましい。The method of addition is not particularly limited as long as the heat absorbing substance adheres to the surface of ammonium nitrate. For example, a method of mixing and adhering a fine powdery heat absorbing substance to ammonium nitrate in a rotating drum may be used. In particular, a method in which the endothermic substance is uniformly attached to the surface of the ammonium nitrate particles is desirable. The amount of addition is not limited, but is usually 0.1 to 2 parts by weight based on 100 parts by weight of ammonium nitrate. If the amount is less than 0.1 part by weight, the effect may not be sufficiently exhibited. On the other hand, if 2 parts by weight are added, the effect is sufficient, and in some cases, the explosion speed is reduced. The endothermic substance is preferably a fine powder for uniform adhesion to the surface of the ammonium nitrate particles and strengthening the adhesive force, and a fine powder having an average particle diameter of usually 120 μm or less, preferably 100 μm or less is used. It is desirable.
【０００９】こうして表面に特定の物質を付着させた本
発明の硝安粒子は、熱安定性が向上し、固結防止効果も
有するものである。本発明において、硝安粒子の表面に
吸熱物質を付着させることにより効果を発現する機構は
完全には明らかではないが、吸熱物質が硝安粒子の表面
に点在していることが推測され、これにより、硝安粒子
同士の付着等を防止することにより固結防止効果を発揮
していること、また、硝安の溶液状態で添加した場合と
は異なり、これらの物質が硝安の粒子内部に混在するこ
とが防げるので、硝安が本来持っている性能を発揮で
き、爆速低下が防止できることが考えられる。The ammonium nitrate particles of the present invention having a specific substance adhered to the surface have improved thermal stability and also have an effect of preventing caking. In the present invention, although the mechanism of exhibiting the effect by attaching the endothermic substance to the surface of the ammonium nitrate particles is not completely clear, it is presumed that the endothermic substance is scattered on the surface of the ammonium nitrate particles. In addition, it exhibits an anti-caking effect by preventing the adhesion of ammonium nitrate particles, and unlike when added in a solution state of ammonium nitrate, these substances may be mixed inside the particles of ammonium nitrate. It is conceivable that, since it can be prevented, the performance inherent to nitric acid can be exhibited, and a decrease in the explosion speed can be prevented.
【００１０】以上説明した本発明の硝安粒子は、燃料油
成分と混合して爆薬の酸化剤として用いるのに好適であ
る。燃料油成分は、混合時に液体である燃料油成分が用
いられる。使用しうる燃料油の具体例としては、２号軽
油、灯油等の鉱物油、植物油、動物油が挙げられる。こ
の他、アルコール類、ワックス類、合成高分子類、ニト
ロ化合物等が燃料油として単独又は混合して使用可能で
ある。融点の高い燃料油成分は、それが液状になる温度
以上で、粒状硝安と混合することによって用いることが
できる。さらに、必要によって粒状硝安以外の酸化剤、
木粉、アルミ粉等の粉末添加燃料あるいは他の添加剤を
加え、ニーダー、回転ミキサーのような混合機に粒状硝
安を加え、撹拌しながら燃料油成分を添加混合して均一
とすることによって、爆薬を調製することができる。The above-described ammonium nitrate particles of the present invention are suitable for being used as an oxidizing agent for explosives by being mixed with a fuel oil component. As the fuel oil component, a fuel oil component that is liquid at the time of mixing is used. Specific examples of usable fuel oils include mineral oils such as No. 2 light oil and kerosene, vegetable oils, and animal oils. In addition, alcohols, waxes, synthetic polymers, nitro compounds and the like can be used alone or as a mixture as a fuel oil. Fuel oil components with a high melting point can be used by mixing with particulate ammonium nitrate above the temperature at which it becomes liquid. Further, if necessary, an oxidizing agent other than granular ammonium nitrate,
By adding powdered fuel such as wood powder, aluminum powder or other additives or other additives, adding granular ammonium nitrate to a mixer such as a kneader or a rotary mixer, and adding and mixing the fuel oil component with stirring to make it uniform. Explosives can be prepared.
【００１１】[0011]
【実施例】以下、本発明を実施例を用いて更に具体的に
説明する。なお、部及び％は特にことわりのない限り重
量部及び重量％を示す。以下に実施例で行った評価方法
について説明する。 （１）自己発熱開始温度 ＡＲＣによるステップ昇温法で測定した。詳しくは、試
料硝安１ｇを窒素雰囲気下で５℃のステップ昇温をさ
せ、０．０２℃／分以上の発熱となった時の試料温度を
読みとり、その温度を自己発熱開始温度とした。EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. Parts and% are parts by weight and% by weight unless otherwise specified. Hereinafter, the evaluation method performed in the examples will be described. (1) Self-heating start temperature Measured by a step heating method using ARC. More specifically, 1 g of the sample nitric acid was heated in steps of 5 ° C. in a nitrogen atmosphere, and the temperature of the sample when the heat generated was 0.02 ° C./min or more was read. The temperature was defined as the self-heating start temperature.
【００１２】（２）固結防止性能 テンシロン固結強度テストにより評価した。即ち、試料
硝安４００ｇを直径７６ｍｍ 高さ１００ｍｍの塩ビ製
円筒容器に充填しビニール袋にて密閉した後、上部より
１０ｋｇの荷重をかけた状態で、２０℃から４５℃の熱
履歴を５回与えた後、ビニール袋及び塩ビ製円筒容器よ
り硝安を取り出し、この成形された硝安塊に上部より加
重を与えていき、硝安塊が崩壊した時の加重を読みと
り、その硝安の固結強度を測定した。この加重が大きい
ほど固結性が激しい、つまり防結性能が低いことを意味
する。(2) Anti-consolidation performance Evaluated by a Tensilon consolidation strength test. That is, 400 g of sample nitrate was filled in a vinyl chloride cylindrical container having a diameter of 76 mm and a height of 100 mm, sealed with a plastic bag, and then subjected to a heat history of 20 to 45 ° C. five times with a load of 10 kg applied from above. After that, the ammonium nitrate was taken out from the plastic bag and the cylindrical container made of polyvinyl chloride, and a weight was applied to the molded ammonium lump from above, and the weight when the ammonium linter collapsed was read, and the consolidation strength of the ammonium nitrate was measured. . The larger the weight, the stronger the consolidation property, that is, the lower the anti-caking performance.
【００１３】（３）吸油率 一定量の試料硝安を軽油に一定時間浸しておいた後、吸
引濾過し、試験前後の重量差より油吸着量を見ることに
より測定した。試料硝安５０ｇｒに対する軽油吸着分
（ｇｒ）の比率（％）を吸油率とした、以下の式によっ
て求められる。なお、この吸油率の測定方法は、工業火
薬協会法に準拠した。 吸油率（％）＝軽油吸着分（ｇｒ）／試料５０（ｇｒ）
×１００ （４）爆速 ＪＩＳ鉄管中に充填された爆薬をＪＩＳＫ−４８１０に
記載された方法に準じて測定した。(3) Oil Absorption Rate A predetermined amount of sample nitric acid was immersed in light oil for a certain period of time, filtered by suction, and measured by observing the oil adsorption from the weight difference before and after the test. The oil absorption is determined by the following equation, where the ratio (%) of the light oil adsorption (gr) to 50 gr of sample nitrate is defined as the oil absorption. The method for measuring the oil absorption was based on the Law of the Industrial Explosives Association. Oil absorption (%) = light oil adsorption (gr) / sample 50 (gr)
× 100 (4) Explosion speed The explosive charged in the JIS iron tube was measured according to the method described in JIS K-4810.
【００１４】（実施例１）平均粒径１．３５ｍｍ、吸油
率１０．４％のポーラスプリル硝安１００重量部に、平
均粒径２０μｍ程度の微粉末ホウ酸を０．１重量部、回
転ドラム内で混合して硝安粒子表面にホウ酸を付着させ
た。得られたホウ酸添加硝安粒子について、自己発熱開
始温度及び防結性能を測定した。Example 1 0.1 part by weight of fine boric acid having an average particle diameter of about 20 μm was added to 100 parts by weight of porous prill nitrate having an average particle diameter of 1.35 mm and an oil absorption of 10.4%, and the inside of a rotating drum was used. To make boric acid adhere to the surface of the ammonium nitrate particles. With respect to the obtained boric acid-added ammonium nitrate particles, the self-heating start temperature and the caulking prevention performance were measured.
【００１５】（実施例２）平均粒径１．３５ｍｍ、吸油
率１０．４％のポーラスプリル硝安１００重量部に、平
均粒径２０μｍ程度の微粉末ホウ酸を０．５重量部、回
転ドラム内で混合して硝安粒子表面にホウ酸を付着させ
た。得られたホウ酸添加硝安粒子について、自己発熱開
始温度及び防結性能を測定した。Example 2 0.5 parts by weight of fine boric acid having an average particle size of about 20 μm was added to 100 parts by weight of porous prilled ammonium nitrate having an average particle diameter of 1.35 mm and an oil absorption of 10.4%. To make boric acid adhere to the surface of the ammonium nitrate particles. With respect to the obtained boric acid-added ammonium nitrate particles, the self-heating start temperature and the caulking prevention performance were measured.
【００１６】（実施例３）平均粒径１．３５ｍｍ、吸油
率１０．４％のポーラスプリル硝安１００重量部に、平
均粒径２０μｍ程度の微粉末ホウ酸を１．０重量部、回
転ドラム内で混合して硝安粒子表面にホウ酸を付着させ
た。得られたホウ酸添加硝安粒子について、自己発熱開
始温度及び防結性能を測定した。Example 3 1.0 part by weight of fine boric acid having an average particle diameter of about 20 μm was added to 100 parts by weight of porous prill nitrate having an average particle diameter of 1.35 mm and an oil absorption of 10.4%. To make boric acid adhere to the surface of the ammonium nitrate particles. With respect to the obtained boric acid-added ammonium nitrate particles, the self-heating start temperature and the caulking prevention performance were measured.
【００１７】（実施例４）平均粒径１．３５ｍｍ、吸油
率１０．４％のポーラスプリル硝安１００重量部に、平
均粒径２０μｍ程度の微粉末ホウ酸を２．０重量部、回
転ドラム内で混合して硝安粒子表面にホウ酸を付着させ
た。 得られたホウ酸添加硝安粒子について、自己発熱
開始温度及び防結性能を測定した。Example 4 2.0 parts by weight of fine boric acid having an average particle diameter of about 20 μm was added to 100 parts by weight of porous prill nitrate having an average particle diameter of 1.35 mm and an oil absorption of 10.4%, and the inside of a rotating drum was used. To make boric acid adhere to the surface of the ammonium nitrate particles. With respect to the obtained boric acid-added ammonium nitrate particles, the self-heating start temperature and the caulking prevention performance were measured.
【００１８】（実施例５）平均粒径１．１５ｍｍ、吸油
率１０．５％のポーラスプリル硝安１００重量部に、平
均粒径２０μｍ程度の微粉末ホウ酸を０．５重量部、回
転ドラム内で混合して硝安粒子表面にホウ酸を付着させ
た。得られたホウ酸添加硝安粒子９４部と軽油６部とを
十分混合して爆薬とし、ＪＩＳ鉄管中に充填し、爆速を
測定した。Example 5 0.5 part by weight of fine boric acid having an average particle size of about 20 μm was added to 100 parts by weight of porous prilled ammonium nitrate having an average particle diameter of 1.15 mm and an oil absorption of 10.5%. To make boric acid adhere to the surface of the ammonium nitrate particles. 94 parts of the obtained boric acid-added ammonium nitrate particles and 6 parts of light oil were sufficiently mixed to prepare an explosive, which was filled in a JIS iron tube, and the explosion velocity was measured.
【００１９】（比較例１）実施例１〜４で使用した、微
粉末ホウ酸を添加する前の、平均粒径１．３５ｍｍ、吸
油率１０．４％のポーラスプリル硝安について、測定及
び評価を行った。(Comparative Example 1) The porous prill nitrate having an average particle diameter of 1.35 mm and an oil absorption of 10.4% used in Examples 1 to 4 before adding fine boric acid was measured and evaluated. went.
【００２０】（比較例２）実施例５で使用した、微粉末
ホウ酸を添加する前の、平均粒径１．１５ｍｍ、吸油率
１０．５％のポーラスプリル硝安９４部と、軽油６部と
を十分混合し爆薬とし、ＪＩＳ鉄管中に充填し、爆速を
測定した。Comparative Example 2 94 parts of porous prill ammonium nitrate having an average particle diameter of 1.15 mm and an oil absorption of 10.5%, and 6 parts of light oil used before adding the fine boric acid used in Example 5 Was sufficiently mixed to form an explosive, which was filled into a JIS iron tube, and the explosion velocity was measured.
【００２１】（比較例３）ホウ酸、リン酸水素アンモニ
ウム、硫安の混合物（０．５：１：０．０５重量比）を
溶融硝安水溶液に合計０．０４％添加し、造粒、乾燥、
冷却して平均粒径１．１３ｍｍ、吸油率１０．６％のポ
ーラスプリル硝安を得た。このポーラスプリル硝安９４
部と、軽油６部とを十分混合し爆薬とし、ＪＩＳ鉄管中
に充填し、爆速を測定した。Comparative Example 3 A mixture of boric acid, ammonium hydrogen phosphate, and ammonium sulfate (0.5: 1: 0.05 weight ratio) was added to a molten ammonium nitrate aqueous solution in a total amount of 0.04%, and granulation, drying,
After cooling, porous prill nitrate having an average particle size of 1.13 mm and an oil absorption of 10.6% was obtained. This porous prill nitrate 94
And 6 parts of light oil were sufficiently mixed to form an explosive, which was filled in a JIS iron tube, and the explosion velocity was measured.
【００２２】以上において実施例１〜４と比較例１の自
己発熱開始温度を比較すると、本発明によるポーラスプ
リル硝安の自己発熱開始温度は上昇しており熱安定性が
向上したことがわかる。また、固結強度を比較すると、
ホウ酸添加率が高いほど固結強度は低くなり、本発明に
よるポーラスプリル硝安の防結性能が向上したことがわ
かる。一方、実施例５及び比較例２〜３の爆速を比較す
ると、本発明によるポーラスプリル硝安を用いた爆薬
は、爆速が低下することなく性能が維持されていること
がわかる。Comparing the self-heating onset temperatures of Examples 1 to 4 and Comparative Example 1 above, it can be seen that the self-heating onset temperature of the porous prill nitrate according to the present invention has increased and the thermal stability has been improved. Also, comparing the consolidation strength,
It can be seen that the higher the boric acid addition rate, the lower the consolidation strength, and the better the performance of the porous prill nitrate anti-caking of the present invention. On the other hand, comparing the explosion speeds of Example 5 and Comparative Examples 2 and 3, it can be seen that the explosive using porous prill nitrate according to the present invention maintains its performance without lowering the explosion speed.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】本発明により、爆速の低下を起こすこと
なく熱的安定性が高く、固結防止効果を発揮する粒状硝
安を得ることができる。According to the present invention, it is possible to obtain granular ammonium nitrate having high thermal stability and an effect of preventing caking without lowering the explosion velocity.
Claims (4)
特徴とする粒状硝安の製造方法。1. A method for producing granular ammonium nitrate, comprising adhering an endothermic substance to ammonium nitrate particles.
末である請求項１記載の粒状硝安の製造方法。2. The method for producing granular ammonium nitrate according to claim 1, wherein the endothermic substance is a fine powder having an average particle size of 120 μm or less.
記載の粒状硝安の製造方法。3. The method according to claim 1, wherein the endothermic substance is boric acid.
A method for producing the granular ammonium nitrate as described above.
を、燃料油成分と混合してなる爆薬の製造方法。4. A method for producing an explosive, comprising mixing the particulate ammonium nitrate according to claim 1 with a fuel oil component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36228698A JP3846077B2 (en) | 1998-12-21 | 1998-12-21 | Production method of granular ammonium nitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36228698A JP3846077B2 (en) | 1998-12-21 | 1998-12-21 | Production method of granular ammonium nitrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000185994A true JP2000185994A (en) | 2000-07-04 |
| JP3846077B2 JP3846077B2 (en) | 2006-11-15 |
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ID=18476468
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36228698A Expired - Fee Related JP3846077B2 (en) | 1998-12-21 | 1998-12-21 | Production method of granular ammonium nitrate |
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004027464A1 (en) * | 2002-09-19 | 2004-04-01 | Sumitomo Electric Industries, Ltd. | Diffractive optical device and method for producing same |
| RU2643950C2 (en) * | 2016-07-15 | 2018-02-06 | Федеральное Государственное Бюджетное Учреждение Науки Институт Проблем Комплексного Освоения Недр Им. Академика Н.В. Мельникова Российской Академии Наук (Ипкон Ран) | Device for producing porous granulated ammonium nitrate |
| CN116924863A (en) * | 2023-07-25 | 2023-10-24 | 山西省民爆集团有限公司 | Ultrapure carbon-based mixed explosive and preparation method and application thereof |
-
1998
- 1998-12-21 JP JP36228698A patent/JP3846077B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004027464A1 (en) * | 2002-09-19 | 2004-04-01 | Sumitomo Electric Industries, Ltd. | Diffractive optical device and method for producing same |
| US7573638B2 (en) | 2002-09-19 | 2009-08-11 | Sumitomo Electric Industries, Ltd. | Diffractive optical element and method of its formation |
| RU2643950C2 (en) * | 2016-07-15 | 2018-02-06 | Федеральное Государственное Бюджетное Учреждение Науки Институт Проблем Комплексного Освоения Недр Им. Академика Н.В. Мельникова Российской Академии Наук (Ипкон Ран) | Device for producing porous granulated ammonium nitrate |
| CN116924863A (en) * | 2023-07-25 | 2023-10-24 | 山西省民爆集团有限公司 | Ultrapure carbon-based mixed explosive and preparation method and application thereof |
| CN116924863B (en) * | 2023-07-25 | 2024-05-17 | 山西省民爆集团有限公司 | Ultrapure carbon-based mixed explosive and preparation method and application thereof |
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|---|---|
| JP3846077B2 (en) | 2006-11-15 |
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