JP2013210172A - Combustion composition for igniting oxygen lance pipe, oxygen lance pipe ignition material, and oxygen lance pipe ignition apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion composition for igniting an oxygen lance pipe capable of quickly and stably igniting an oxygen lance pipe without requiring complex ancillary facilities, and to provide an oxygen lance pipe ignition material and oxygen lance pipe ignition apparatus using the same.SOLUTION: A combustion composition for igniting an oxygen lance pipe contains metal oxide and a metal reducer, in which the metal oxide is FeO, and the metal reducer is one or two kinds selected from a group comprising aluminum, magnesium and magnesium alloy, an average particle diameter of the metal reducer is 1-330 μm, and a mass mixing ratio of the metal oxygen and the metal reducer is 70 or 85:30 or 15.

Description

  The present invention relates to an oxygen lance rod ignition combustion composition, an oxygen lance rod ignition material, and an oxygen lance rod ignition device that can ignite and burn an end portion of an oxygen lance rod easily and reliably. About.

  Oxygen lance rods are drilled while melting structures such as reinforced concrete and other structures, metal materials such as steel frames, refractories such as refractory bricks, rocks, structures in water, reefs and other materials to be welded. Used when cutting, dismantling, etc. Conventionally, when an oxygen lance rod is ignited, a method is generally used in which the tip of the lance rod is brought into contact with a high-temperature object while the oxygen gas is reduced to an appropriate flow rate, or the tip is heated by being exposed to a high temperature. It was. More specifically, the oxygen lance rod tip is melted with an oxygen acetylene blower (or arc blower) and the oxygen lance rod is ignited, or wood, charcoal, etc. are combusted, and the combustion heat generates oxygen. A method is known in which the tip of the lance rod is heated and ignited.

  However, the former method requires an oxygen acetylene cutting machine (or an arc cutting machine) or its auxiliary equipment, and there is a problem that transportation, installation and ignition work are complicated and large. On the other hand, in the latter method, since it takes time to heat the tip portion of the oxygen lance rod, there is a problem that quick ignition is difficult.

  For this reason, an ignition material and an ignition method for the purpose of igniting an oxygen lance rod quickly and stably without requiring a large incidental facility or the like have been proposed. For example, in Patent Document 1, an ignition insertion hole into which an end portion of an oxygen lance rod can be inserted is provided in an ignition material base made of wood, compressed paper, or the like, and metal powder mainly composed of iron is used as wax or resin. An ignition material for an oxygen lance rod is disclosed in which an ignition ignition material solidified with a binder as described above is configured to be installed in an ignition insertion hole so that an oxygen lance rod insertion space remains in the vicinity of the opening. However, even when this igniting material is used, it still takes time to ignite the tip of the oxygen lance rod.

  Further, in Patent Document 2, an ignition ignition material is attached to the tip of the oxygen lance rod, and the ignition ignition material is moved to a predetermined position of the work to be melted, and oxygen from the oxygen cylinder is supplied to a hose. The oxygen lance rod is supplied into the oxygen lance rod and ejected from the tip portion of the oxygen lance rod, and the tip portion of the ignition igniter is pressed against a predetermined position of the workpiece to be ignited at a high temperature to ignite the ignition material A method for igniting an oxygen lance rod is disclosed, in which the ignition material of the ignition igniter is combusted by the combustion of the igniting material, and the tip of the oxygen lance rod is combusted by the combustion of the ignition material. Has been. However, this method is also insufficient in terms of quick and stable ignition to the ignition material.

Japanese Patent No. 3541393 Japanese Patent No. 2654898

  The present invention provides an oxygen lance rod ignition combustion composition, an oxygen lance rod ignition material and an oxygen lance rod ignition device using the same, which can ignite oxygen lance rods quickly and stably without requiring complicated incidental facilities. The issue is to provide.

  As a result of earnest research to solve the above-mentioned problems, the present inventor has combined a specific metal oxide and a metal reducing agent as an oxygen lance rod ignition combustion composition, and combusted it, for a very short time. Thus, the tip portion of the oxygen lance rod can be stably heated and ignited, and further, this combustion composition is heated by a friction ignition composition such as an electric heating coil or a head of an emergency safety flame cylinder, etc. It has been found that combustion can be started quickly and a high temperature capable of igniting the oxygen lance rod can be reached in a short time, and the present invention has been completed.

That is, the present invention is an oxygen lance rod ignition combustion composition containing a metal oxide and a metal reducing agent, wherein the metal oxide is Fe ₂ O ₃ and the metal reducing agent is made of aluminum, magnesium, and a magnalium alloy. 1 type or 2 types or more selected from the group consisting of, wherein the average particle diameter of the metal reducing agent is 1 to 330 μm, and the mass mixing ratio of the metal oxide and the metal reducing agent is 70 to 85:30 to 15 It is a combustion composition for oxygen lance rod ignition characterized by being.

  The present invention is also an oxygen lance rod ignition material in which a container is filled with the combustion composition for ignition of the oxygen lance rod.

  Further, according to the present invention, the oxygen lance rod ignition combustion composition is filled in a container, and the oxygen lance rod ignition combustion composition is provided with an ignition insertion hole into which the tip portion of the oxygen lance rod can be inserted. An oxygen lance rod ignition device comprising ignition means for burning an oxygen lance rod ignition combustion composition.

  The combustion composition for igniting an oxygen lance rod of the present invention can ignite the oxygen lance rod more reliably and more quickly than the conventionally known combustion compositions for igniting an oxygen lance rod, and the combustion control is improved. It is easy and has excellent stability and safety. Moreover, since the combustion heat per unit volume is large, the combustion composition for igniting the oxygen lance rod and the container for storing it can be reduced in size and weight. Moreover, since large equipment, such as an oxygen acetylene cutting machine, is not required, equipment transportation and installation work can be omitted, and the oxygen lance rod ignition device and the ignition mechanism can be simplified.

The schematic sectional drawing which showed an example of the oxygen lance rod ignition device of this invention provided with the electrothermal coil as an ignition means. The schematic sectional drawing which showed an example of the oxygen lance rod ignition device of this invention using friction ignition compositions, such as a head medicine of an emergency safety flame cylinder, as an ignition means.

The combustion composition for ignition of an oxygen lance rod of the present invention (hereinafter sometimes simply referred to as “combustion composition”) contains a metal oxide and a metal reducing agent. Of these, Fe ₂ O ₃ is used as the metal oxide. By using this Fe ₂ O ₃ , compared with other metal oxides, for example, SiO ₂ , Cr ₂ O ₃ , MnO ₂ , Fe ₃ O ₄ , CuO, Pb ₃ O _4, etc., reliable ignition is achieved. The effect which was excellent in the property, quickness, and stable combustibility is acquired.

As the _Fe 2 _{O 3,} is used suitably those of the particulate preferably has an average particle size of 0.01 to 10 [mu] m, it is more preferred 0.05 to 1 [mu] m. Commercial products having such an average particle diameter can be used. Within this range, the ignitability is excellent.

The content of Fe ₂ O ₃ in the combustion composition of the present invention is preferably 70 to 85% by mass (hereinafter simply referred to as “%”), and more preferably 70 to 80%. This range is preferable in terms of ignitability.

  Moreover, as a metal reducing agent, the single metal of aluminum or magnesium, or a magnalium alloy which is an alloy of aluminum and magnesium can be used, and these 1 type or 2 types or more can be mixed and used. Among these, it is most preferable to use a magnesium simple metal because the ignitability of the combustion composition is excellent and an appropriate combustion rate is obtained.

The metal reducing agent is also preferably used in the form of particles, preferably having an average particle diameter in the range of 1 to 330 μm, more preferably 10 to 105 μm. When the average particle diameter of the metal reducing agent exceeds 330 μm, the ignitability may be inferior and combustion may be interrupted. On the other hand, when a particle having an average particle size of less than 1 μm is used, the combustion is intense and the reaction control becomes difficult, which may increase the risk. A commercial product of a metal reducing agent having such an average particle size can be used as it is, or the particle size can be appropriately adjusted by sieving. In the present specification, the average particle size of Fe ₂ O _3, and metal reducing agent is meant a value measured by sieving method.

  The content of the metal reducing agent in the combustion composition of the present invention is preferably 30 to 15%, more preferably 30 to 20%. This range is preferable in terms of ignitability.

In addition to the Fe ₂ O ₃ and the metal reducing agent, the combustion composition of the present invention can also contain optional components such as a combustion regulator and an organic binder as necessary. When mix | blending such an arbitrary component, the content is 0.1 to 15% normally, Preferably it is 1 to 10%.

Combustion compositions of the present invention are prepared by mixing the Fe 2 _{O 3,} any ingredient used and optionally metal reducing agent according to a conventional method. The mixing mass ratio of Fe ₂ O ₃ and the metal reducing agent is preferably 70 to 85:30 to 15 (Fe ₂ O ₃ : metal reducing agent), and more preferably 70 to 80:30 to 20. That is, with respect to the total amount of _Fe 2 _{O 3} and the metal reducing agent, the mixing ratio is 70 to 85% _Fe 2 _{O 3,} preferably 30 to 15% of the mixing ratio of the metal reducing agent, _Fe 2 O _More preferably, the mixing ratio of ₃ is 70 to 80%, and the mixing ratio of the metal reducing agent is 30 to 20%. When the mixing ratio of the metal reducing agent exceeds 30%, combustion control becomes difficult, and there may be a problem that the calorific value is reduced or the cost of the composition is increased. Moreover, when filling and using a container, it may be difficult to adjust to an appropriate filling density. On the other hand, if the mixing ratio of the metal reducing agent is less than 15%, the ignitability may be poor.

  The combustion composition of the present invention thus obtained can be heated and burned quickly and easily using a friction ignition composition such as an electric heating coil or a head of an emergency safety flame cylinder, and an appropriate combustion temperature. And a combustion composition for igniting an oxygen lance rod having a combustion rate and excellent ignition performance on the oxygen lance rod.

  The combustion composition of the present invention can be solidified with a binder such as a resin, but is preferably used by filling a container having an appropriate opening, and the oxygen lance rod ignition of the present invention. The material is in such a form that the combustion composition is accommodated in the container. Examples of the material for the container filled with the combustion composition include iron, stainless steel, and aluminum. Among these, iron having an appropriate heat capacity is preferable.

The container is preferably filled with the combustion composition so that the filling density is 1.3 to 3.0 g / cm ³ , more preferably 1.5 to 3.0 g / cm ³ . You may press-compress as needed. This range is preferable from the viewpoints of ignitability, combustion stability, combustion sustainability, and handling during storage and transportation. When the packing density is less than 1.3 g / cm ³ , the packing density easily changes during storage and transportation, which may cause variations in combustion characteristics. Also, the combustion speed may become too fast, making combustion control difficult. On the other hand, if the packing density is larger than 3.0 g / cm ³ , the ignitability may be inferior or a container filled with the combustion composition may be required to have a high container pressure resistance. Moreover, it is preferable that the combustion composition is provided with an insertion hole for ignition into which the tip portion of the oxygen lance rod can be inserted. Such an insertion hole for ignition can be formed by compressing and solidifying the combustion composition by press compression or the like.

  The shape of the container can take various shapes such as a cylindrical shape, a rectangular parallelepiped, and a cube. Also, the shape of the ignition insertion hole is not particularly limited as long as it is possible to insert the tip of the oxygen lance rod, which is an ignited material, and depending on the shape, a cylindrical shape, a rectangular parallelepiped, a cube, etc. Various shapes can be used. Further, the depth is appropriately set according to the length of the oxygen lance rod to be used, etc., and can be, for example, about 0.5 to 10 cm.

Next, an oxygen lance rod ignition device of the present invention in which a container is filled with the combustion composition will be described with reference to the drawings. In this ignition device, the ignition material further includes an ignition means. FIG. 1 is a schematic cross-sectional view showing an example of an embodiment of an oxygen lance rod ignition device according to the present invention, in which an electric heating coil is provided as ignition means. The combustion composition 4 is filled in the metal container 2, but preferably the filling density is 1.3 to 3.0 g / cm ³ , more preferably 1.5 to 3.0 g / cm ^3. If necessary, it can be filled with a compression press or the like. In addition, the combustion composition 4 is provided with an insertion hole for ignition 1 into which the tip portion of the oxygen lance rod can be inserted, and is compressed and solidified by press compression or the like to form such an insertion hole for ignition. can do.

  The metal container 2 may include a heat insulating material 3. The heat insulating material 3 may be laminated on the inner surfaces of the side wall 2b and the bottom wall 2c of the metal container 2, or the side wall 2b and the bottom wall 2c may be hollow and inserted into the space. The shape of the metal container 2 can take various shapes such as a cylindrical shape, a rectangular parallelepiped, and a cube. The shape of the ignition insertion hole 1 is not particularly limited as long as it is possible to insert the tip of the oxygen lance rod, which is an ignited material. Depending on the shape, a cylindrical shape, a rectangular parallelepiped, a cube, etc. Various shapes can be used as appropriate. Further, the depth is appropriately set according to the length of the oxygen lance rod to be used, etc., and can be, for example, about 0.5 to 10 cm. The combustion composition 4 is filled up to a position where the height is in contact with the top wall 2a except for the portion of the insertion hole 1 for ignition, and the top wall 2a is provided with an opening communicating with the insertion hole 1 for ignition.

  The oxygen lance rod ignition device of the present invention is provided with ignition means for igniting and burning the combustion composition 4. As the ignition means, conventionally known ignition means such as a heating element such as an electric heating coil and a ceramic heater, a friction ignition composition such as a gunpowder, and a head of an emergency safety flame cylinder can be used. It is preferable in that it can be used easily with a friction ignition composition such as a head medicine. In this embodiment, the electric heating coil 5 is provided as an ignition means. The electric heating coil 5 is disposed so as to contact a part of the combustion composition 4. The electric heating coil 5 is energized and heated, the combustion composition 4 is ignited, and the ignited combustion composition 4 is heated to a high temperature and stably burns. It becomes possible to quickly ignite the inserted oxygen lance rod. The type and shape of the electric heating coil 5 are not particularly limited, and commercially available ones can be used.

  Further, as another embodiment of the oxygen lance rod ignition device of the present invention, a friction ignition composition such as a head of an emergency safety flame cylinder may be used as the ignition means as shown in FIG. In this embodiment, the friction ignition composition 6 and the fire receiving agent 7 are provided, and these are brought into contact with each other, so that a part of the friction ignition composition 6 is exposed to the outside of the metal container 2 and the fire receiving agent. 7 is inserted through the side wall 2 b of the metal container 2 so that a part of the metal 7 contacts the combustion composition 4. The friction ignition composition 6 such as a head medicine of an emergency safety flame rubbed with a striker such as a sticking paper is transferred to the fire catcher 7, the combustion of the combustion composition 4 is started, and the combustion composition 4 is stabilized. Thus, by continuing the combustion, the temperature becomes high, and the oxygen lance rod inserted into the ignition insertion hole 1 can be quickly ignited. Thus, by using a friction ignition composition such as a head of an emergency safety flame cylinder as the ignition means, an oxygen lance rod ignition device that does not require an electric power source can be obtained. As the friction ignition composition 6 and the fire receiving chemical 7, a conventionally known chemical used in an emergency safety flame cylinder, a signal flame tube, or the like can be used. Specifically, as a friction ignition composition, for example, a friction ignition composition mainly composed of potassium chlorate disclosed in JA Conklin's “Science of Energy Materials-Fundamentals and Applications”, etc. As a medicine, a peroxidation agent disclosed in “General pyropharmaceuticals” edited by the Japan Explosives Industry Association, and disclosed in “Construction of energy materials-basics and applications” by JA Conklin. An ignition agent composition mainly containing barium can be used, and the amount of these can be set as appropriate.

Example 1
Preparation of combustion composition and ignition material (1):
As a metal oxide, iron sesquioxide (Toda Pigment Co., Ltd., Toda Color 100ED, average particle size 0.1 μm), as a metal reducing agent, magnesium (Kanto Metals Co., Ltd., Mg-100 (average particle size) 105 μm) was used and mixed at a mass mixing ratio shown in Table 1 below to prepare a combustion composition.

(Flammability evaluation of combustion composition)
Each combustion composition was filled in an acrylic pipe (outer diameter: 38 mm, inner diameter: 30 mm, length: 100 mm) so as to have the same packing density as much as possible to prepare an ignition material. An electric heating coil formed from a Kanthal wire having a wire diameter of 0.2 mm was fixed to the upper end of each ignition material in a pressed state, and a voltage of 3 V was applied to the electric heating coil to confirm the possibility of ignition. Moreover, the state of combustion was observed about what was ignited, and it was visually confirmed whether the combustion residue was burning stably without scattering outside a container during combustion. Table 1 shows the evaluation results of the mass composition, packing density, ignitability, and combustion stability of the combustion composition.

[Judgment criteria for ignitability]
○: Ignite within 10 seconds after pressing the electric heating coil.
X: It took 10 seconds or more after pressing the electric heating coil. Or did not ignite.
[Judgment criteria for combustion residue]
○: Stable combustion was observed without scattering of combustion residues.
X: Combustion was intense and combustion residues were scattered outside the container.

  As shown in Table 1, in terms of ignitability, the ignitability was good when the mass composition of iron sesquioxide was in the range of 50 to 85%. When the mass composition of magnesium is less than 15%, the amount of magnesium serving as an ignition source is insufficient, and it is considered difficult to shift from ignition to the combustion stage. On the other hand, from the viewpoint of combustion stability, stable combustion was obtained when the mass composition of iron sesquioxide was in the range of 70 to 85%. When the mass composition of magnesium is 35% or more, a surplus is generated in the magnesium from the stoichiometric ratio, so that the combustion state is such that a large amount of combustion gas is generated when magnesium alone actively participates in the combustion system. Unlikely, stable combustion was not obtained. Thus, when the mass composition of iron sesquioxide is in the range of 70 to 85%, the ignitability is good and stable combustion can be realized.

Example 2
Preparation of combustion composition and ignition material (2):
Combustion compositions were prepared by changing the average particle size of the metal reducing agent used. As the metal oxide, iron sesquioxide (manufactured by Toda Pigment Co., Ltd., Toda Color 100ED, average particle size 0.1 μm) was used. On the other hand, as a metal reducing agent, an average particle diameter of 105 μm (Mg-100), an average particle diameter of 226 μm (Mg-45), an average particle diameter of 330 μm (screened product), an average particle diameter of 436 μm (Mg-30), an average particle diameter Five kinds of magnesium of 689 μm (Mg-20) were used (all commercially available products are manufactured by Kanto Metal Co., Ltd.). Ferric sesquioxide and magnesium were mixed well at a mass mixing ratio of 80:20 to prepare a combustion composition.

  Each obtained combustion composition was filled in an acrylic pipe (outer diameter 38 mm, inner diameter 30 mm, length 100 mm) to obtain an ignition material. The ignition coil is fixed to the upper end of each ignited material in the same manner as in Example 1 and is ignited by applying a voltage of 3 V to the heating coil (combustion rate, ignitability, combustion stability). Was observed. The ignitability and combustion stability were evaluated in the same manner as in Example 1. Regarding the measurement of the burning rate, the burning rate was measured based on the ion gap explosion rate measurement method stipulated in the pyrotechnic association standard. That is, a microelectrode produced by twisting enamelled copper wire and cutting the tip was inserted into the specimen in advance, and it was generated from the connected pulse generation circuit by being short-circuited when the combustion surface passed The combustion rate was calculated from the time interval of the pulse signal between the microelectrodes using the pulse signal. Table 2 shows the evaluation results of the average particle diameter of magnesium, the packing density of the combustion composition, the combustion speed, the ignitability, and the combustion stability.

  As shown in Table 2, combustion with good and stable ignitability was obtained when the average particle size of magnesium was 330 μm or less. When the average particle size of magnesium exceeds 330 μm, the energy value required for ignition increases and the ignitability is inferior, and the surface area per unit weight of magnesium decreases and the combustion reaction becomes non-uniform and stable combustion cannot be obtained. .

Example 3
Preparation of combustion composition and ignition material (3):
Ignition materials were prepared by changing the packing density of the combustion composition. Iron oxide sesquioxide (Toda Pigment Co., Ltd., Toda Color 100ED, average particle size 0.1 μm) was used as the metal oxide, and magnesium (Kanto Metal Co., Ltd., Mg-100 (average particle size) was used as the metal reducing agent. These were mixed well at a mass mixing ratio of 80:20 (iron sesquioxide: magnesium) to prepare a combustion composition.

  Next, this combustion composition was filled into an acrylic pipe (outer diameter: 38 mm, inner diameter: 30 mm, length: 100 mm) so as to have the packing density shown in the following Table 3, and used as an ignition material. The ignition coil is fixed to the upper end of each ignited material in the same manner as in Example 1 and is ignited by applying a voltage of 3 V to the heating coil (combustion rate, ignitability, combustion stability). Was observed. Ignition and combustion stability were evaluated in the same manner as in Example 1, and the combustion rate was measured in the same manner as in Example 2. Table 3 shows the evaluation results of packing density, combustion speed, ignitability, and combustion stability.

As shown in Table 3, the ignitability was good regardless of the packing density of the combustion composition. On the other hand, from the viewpoint of combustion stability, stable combustion was obtained when the packing density of the combustion composition was in the range of 1.5 to 3.0 g / cm ³ . When the packing density of the combustion composition is less than 1.3 g / cm ³ , the combustion rate may be high and the combustion residue may be scattered, which may be dangerous. In addition, the packing density is likely to change during storage and transportation, which may cause variations in combustion characteristics.

Example 4
Oxygen lance rod ignition test (1):
The electrothermal coil ignition type lance rod ignition device shown in FIG. 1 was manufactured. That is, iron sesquioxide (made by Toda Pigment Co., Ltd., Toda Color 100ED, average particle size 0.1 μm) was used as the metal oxide, and magnesium (produced by Kanto Metal Co., Ltd., Mg-100 (average) was used as the metal reducing agent. A combustion composition was prepared by mixing them well at a mass mixing ratio of 80:20 (iron sesquioxide: magnesium) using a cylindrical iron metal container (diameter 30 × height). 40 cm) at a packing density of 1.8 g / cm ³ , and filled with a compression press so as to form a cylindrical ignition insertion hole having a diameter of about 1 cm and a depth of about 2 cm. The electric heating coil was inserted into the wall and fixed in contact with the combustion composition, and an oxygen lance rod (made by Oxygen Arc Industry Co., Ltd., model number SR9-600) was inserted into the insertion hole for ignition, acid With the gas pressure adjusted to 0.3 MPa and a small amount of gas ejected, a voltage of 3 V was applied to the electric heating coil, and the ignition time required from the start of heating the electric heating coil to the ignition of the oxygen lance rod was measured. As a comparison, when the wood conventionally used as an ignition source is ignited by igniting with an open flame in an oxygen atmosphere, when ignited with an oxygen acetylene fusing machine, and the ignition ignition material described in Patent Document 1 The time required to ignite the oxygen lance rod was confirmed when ignited at 1. These results are shown in Table 4 below.

  The oxygen lance rod ignition device of the present invention is small and excellent in portability, and enables quick and reliable lance ignition. On the other hand, when wood is used as the ignition material, it is difficult to see the ignition location, and 10 to 20% of the number of ignitions is non-ignition and the ignition accuracy is low. It took more than that. In addition, when the oxyacetylene fusing machine was used, the required ignition time varied greatly due to the temperature difference between the burner inner and outer flames, and the required time became longer. In addition, the number of gas cylinders required is increased, the portability is poor, the workability is inferior, such as the need to work with two or more people, and the use of flammable acetylene gas is highly dangerous. There was a problem. The tip of the oxygen lance rod is attached to an ignition material base made of wood or compressed paper as described in Patent Document 1 for the purpose of igniting the oxygen lance rod quickly and stably without requiring large incidental facilities. When using an ignition ignition material that has an insertion hole for ignition where a part can be inserted, and solidified iron-based metal powder with a binder such as wax or resin, the ignition is compared to when using wood. Although the difficulty of the work was greatly reduced, the time required for ignition was the same as when wood was used.

Example 5
Oxygen lance rod ignition test (2):
The friction ignition composition ignition type lance rod ignition device shown in FIG. 2 is the same as in Example 4 except that instead of an electric heating coil, a friction ignition composition such as a head of an emergency safety flame cylinder is used as the ignition means. Was made. As a friction ignition composition, 0.2 g of the head of the emergency safety flame cylinder is used, and as the fire-receiving agent, 1.5 g of the signal flame tube transfer agent disclosed in the literature (General Explosives, Japan Explosives Industry Association) is used. Using. When this oxygen lance rod ignition device was used to conduct an ignition test in the same manner as in Example 4, the oxygen lance rod could be quickly ignited in the same manner as the electric heating coil type ignition device in Example 4.

  The combustion composition of the present invention is non-explosive, easy to handle, and has a large amount of reaction heat per unit volume, so that the ignition device can be made smaller than the conventional one, and reliable and quick oxygen The lance rod can be ignited. Further, the ignition device of the present invention can be ignited easily and quickly by a friction ignition composition such as an electric heating coil or a head of an emergency safety flame cylinder, and does not require a large device for ignition, an open flame or a high-temperature object. Regardless of the usage environment, it is safe because it is small, light and easy to use, and can be ignited remotely. Therefore, it is useful as a combustion composition or ignition device for oxygen lance rod ignition.

DESCRIPTION OF SYMBOLS 1 Insertion hole for ignition 2 Metal container 2a Top wall 2b Side wall 2c Bottom wall 3 Heat insulating material 4 Combustion composition 5 Electric heating coil 6 Friction ignition composition 7 Fire receiving agent

Claims (11)

An oxygen lance rod ignition combustion composition containing a metal oxide and a metal reducing agent, wherein the metal oxide is Fe ₂ O ₃ , and the metal reducing agent is selected from the group consisting of aluminum, magnesium and a magnalium alloy 1 type or 2 types or more, The average particle diameter of a metal reducing agent is 1-330 micrometers, The mass mixing ratio of a metal oxide and a metal reducing agent is 70 thru | or 85:30 thru | or 15 An oxygen lance rod ignition combustion composition. The combustion composition for ignition of an oxygen lance rod according to claim 1, wherein the average particle diameter of Fe ₂ O ₃ is 0.01 to 10 µm.   An oxygen lance rod ignition material obtained by filling a container with the combustion composition for ignition of an oxygen lance rod according to claim 1 or 2. The oxygen lance rod ignition material according to claim ³ , wherein the combustion composition for ignition of an oxygen lance rod is filled with a packing density of 1.3 to 3.0 g / cm ³ .   An oxygen lance rod ignition device in which a container is filled with the combustion composition for igniting an oxygen lance rod according to claim 1 or 2, wherein a tip portion of the oxygen lance rod can be inserted into the combustion composition for igniting an oxygen lance rod. An oxygen lance rod ignition device comprising an ignition insertion hole and an ignition means for burning an oxygen lance rod ignition combustion composition. The oxygen lance rod ignition device according to claim 5, wherein the combustion composition for ignition of an oxygen lance rod is filled with a packing density of 1.3 to 3.0 g / cm ³ .   The oxygen lance rod ignition device according to claim 5 or 6, wherein the ignition means is an electric heating coil.   The electric heating coil is placed in contact with the combustion composition for igniting the oxygen lance rod, and when the electric heating coil is energized and heated, combustion of the combustion composition for igniting the oxygen lance rod is started, and the ignition heat is inserted by the combustion heat. The oxygen lance rod ignition device according to claim 7, which ignites the tip of the oxygen lance pipe inserted into the hole.   The oxygen lance rod ignition device according to claim 5 or 6, wherein the ignition means is a friction ignition composition.   The oxygen lance rod ignition device according to claim 9, further comprising a fire catcher.   The flame retardant is disposed in contact with the oxygen lance rod ignition combustion composition, the friction ignition composition is rubbed to start combustion, and the combustion is transmitted by the flame retardant to ignite the oxygen lance rod ignition combustion composition. The oxygen lance rod ignition device according to claim 9 or 10, wherein the oxygen lance rod end portion inserted in the ignition insertion hole is ignited by the combustion heat.

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