CN103864546A - Adding method of flame inhibitor of coal mine permitted detonator explosive - Google Patents
Adding method of flame inhibitor of coal mine permitted detonator explosive Download PDFInfo
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- CN103864546A CN103864546A CN201210532288.8A CN201210532288A CN103864546A CN 103864546 A CN103864546 A CN 103864546A CN 201210532288 A CN201210532288 A CN 201210532288A CN 103864546 A CN103864546 A CN 103864546A
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Abstract
The invention discloses an adding method of a flame inhibitor of a coal mine permitted detonator explosive. The method comprises the following steps: 1, adding polyvinyl alcohol into water, and heating for dissolving to form an aqueous solution of polyvinyl alcohol; 2, adding the flame inhibitor into the cooled aqueous solution of polyvinyl alcohol, and fully stirring to form a suspension; and 3, putting the prepared explosive particles in the drum of a drum coating machine, allowing the drum to rotate, adding the suspension obtained in step 2 in a dropwise manner to wet the particles, introducing hot air for drying, adding the suspension, and repeating the above suspension addition and drying process until no suspension is residual, and drying to prepare a flame inhibitor-containing explosive. Compared with the prior art, the method has the following substantial characteristics: the coating rate of the flame inhibitor is high, so the cost is reduced; the content of the flame inhibitor coated in the explosive can be easily adjusted; the surface of the particles is uniformly coated with a water-soluble film, so the surface of the particles is smooth, and the fluidity of the particles is improved; crystals of the flame inhibitor coated on the surface of the particles unlikely generate a static effect, so the static accumulation of the particles is reduced; and polyvinyl alcohol is a water-soluble polymer, and water is used as a solvent, so no organic solvent volatilizes in the production process, and the method is nontoxic and has no pollution.
Description
Technical field
The invention belongs to industrial explosive preparation method, especially a kind of addition means of the flame-cooling agent for detonator allowed for use in coal mines explosive.
Background technology
It is reported that the addition means with the flame-cooling agent in explosive to detonator allowed for use in coal mines at present mainly contains the coated method of direct mechanical hybrid system and aqueous suspension.Although use the addition means method of these flame-cooling agents, can make detonator allowed for use in coal mines explosive meet the requirement using, these methods are Shortcomings part all.Wherein, direct mechanical hybrid system, namely, directly by flame-cooling agent and main body desensitized explosive mechanically mixing, this method production efficiency is low, process complexity, time limit of service and reliability decrease, flame-cooling agent mixes and is also difficult for mixing with explosive.The coated method of the aqueous suspension comparatively speaking ratio of mixture of flame-cooling agent and explosive is more even, but often there are a large amount of flame-cooling agents not to be coated in explosive in coated process, and flame-cooling agent content acquires a certain degree and is just difficult to improve again, the particularly flame-cooling agent to some ultra-fine grains and flame-cooling agent soluble in water.The present invention study a kind of simple to operate, covered effect good, produces fine powder few, environmentally safe harm, the flame-cooling agent addition means of flame-cooling agent easy-to-control added amount.
Summary of the invention
The object of the present invention is to provide a kind of simple to operate, covered effect good, produces fine powder few, environmentally safe harm, the manageable flame-cooling agent addition means of flame-cooling agent content.
Realizing technical solution of the present invention is: a kind of addition means of using the flame-cooling agent of explosive for detonator allowed for use in coal mines, comprises the following steps:
The first step, is added to the water heating for dissolving by polyvinyl alcohol, forms polyvinyl alcohol water solution;
Second step, joins flame-cooling agent in cooled polyvinyl alcohol water solution, fully stirs, and forms suspension;
The 3rd step, is placed in the explosive molding powder preparing in the cylinder of cylinder coating machine rotary drum, the suspension that drips second step makes modeling powder wetting, passes into warm air drying, after being dried, adds suspension again, until suspension has added and is dry, make containing flame-cooling agent explosive and so forth.
The mass concentration of the polyvinyl alcohol water solution described in the first step is 1 ~ 5%, and Heating temperature is 80 ~ 95 DEG C.
Flame-cooling agent described in second step is sodium silicoaluminate or sodium fluoroaluminate, and polyvinyl alcohol accounts for 5% ~ 30% of flame-cooling agent quality.
Drying temperature described in the 3rd step is 25 ~ 60 DEG C.
Compared with prior art, its distinguishing feature is in the present invention:
(1) clad ratio of flame-cooling agent is high, reduces costs; (2) in explosive, coated flame-cooling agent content easily regulates; (3) water-soluble film is coated on modeling powder surface uniformly, makes modeling powder surface Paint Gloss, has improved the free-running property of modeling powder; (4) the flame-cooling agent crystal that is coated on modeling powder surface is difficult for producing static, has reduced the accumulation of static electricity of modeling powder.(5) polyvinyl alcohol is water-soluble polymer, and water is cooked solvent, organic solvent-free volatilization in production process, nontoxic pollution-free.
Embodiment
Further illustrate with embodiment below:
Embodiment 1: to produce 1 kilogram of detonator allowed for use in coal mines explosive as example, the mass percent of choosing the each component of detonator allowed for use in coal mines explosive is: explosive molding powder 80%, sodium silicoaluminate 18%, polyvinyl alcohol 2%.Accurately weigh 0.80 kilogram of explosive molding powder according to said ratio, 0.18 kilogram of sodium silicoaluminate, 0.02 kilogram of polyvinyl alcohol.
Operation steps: the first step is placed in 0.38 kg of water by 0.02 kilogram of polyvinyl alcohol according to mass ratio 5% and is heated to 95 DEG C, to dissolving completely.Second step joins sodium silicoaluminate in the polyvinyl alcohol water solution that is cooled to 20 DEG C, fully stirs, and forms suspension liquid.The 3rd step is put into 0.80 kilogram of modeling powder in the cylinder of finishing machine, rotary drum, start toward the aqueous suspension that wherein drips sodium silicoaluminate and polyvinyl alcohol (total amount 1/10), after dropwising, rotating speed is adjusted to 75rpm, start to dry and keep envrionment temperature, in drying process, observe material, when opening hot blast to 60 DEG C during without bonding phenomenon between particle, accelerate dry.Treat that particles no longer in cylinder sticks to the suspension liquid that inner wall of rotary drum also can not add sodium silicoaluminate mutually in the situation of bonding again, and so forth, until the suspension liquid of sodium silicoaluminate adds, and particle drying gets final product discharging.Record the clad ratio 98% of sodium silicoaluminate.
Embodiment 2: to produce 1 kilogram of detonator allowed for use in coal mines explosive as example, the mass percent of choosing the each component of detonator allowed for use in coal mines explosive is: explosive molding powder 95%, sodium silicoaluminate 4%, polyvinyl alcohol 1%.Accurately weigh 0.95 kilogram of explosive molding powder according to said ratio, 0.04 kilogram of sodium silicoaluminate, 0.01 kilogram of polyvinyl alcohol.
Operation steps: the first step is placed in 0.99 kg of water by 0.01 kilogram of polyvinyl alcohol according to mass ratio 1% and is heated to 80 DEG C, to dissolving completely.Second step joins sodium silicoaluminate in the polyvinyl alcohol water solution that is cooled to 20 DEG C, fully stirs, and forms suspension liquid.The 3rd step is put into 0.82 kilogram of modeling powder in the cylinder of finishing machine, rotary drum, start toward the aqueous suspension that wherein drips sodium silicoaluminate and polyvinyl alcohol (total amount 1/10), after dropwising, rotating speed is adjusted to 75rpm, start to dry and keep envrionment temperature, in drying process, observe material, when opening hot blast to 60 DEG C during without bonding phenomenon between particle, accelerate dry.Treat that particles no longer in cylinder sticks to the suspension liquid that inner wall of rotary drum also can not add sodium silicoaluminate mutually in the situation of bonding again, and so forth, until the suspension liquid of sodium silicoaluminate adds, and particle drying gets final product discharging.Record the clad ratio 99% of sodium silicoaluminate.
Embodiment 3: to produce 1 kilogram of detonator allowed for use in coal mines explosive as example, the mass percent of choosing the each component of detonator allowed for use in coal mines explosive is: explosive molding powder 85%, sodium silicoaluminate 12%, polyvinyl alcohol 3%.Accurately weigh 0.85 kilogram of explosive molding powder according to said ratio, 0.12 kilogram of sodium silicoaluminate, 0.03 kilogram of polyvinyl alcohol.
Operation steps: the first step is placed in 1.47 kg of water by 0.03 kilogram of polyvinyl alcohol according to mass ratio 2% and is heated to 90 DEG C, to dissolving completely.Second step joins sodium silicoaluminate in the polyvinyl alcohol water solution that is cooled to 20 DEG C, fully stirs, and forms suspension liquid.The 3rd step is put into modeling powder in the cylinder of finishing machine, rotary drum, start toward the aqueous suspension that wherein drips sodium silicoaluminate and polyvinyl alcohol (total amount 1/10), after dropwising, rotating speed is adjusted to 75rpm, start to dry and keep envrionment temperature, in drying process, observe material, when opening hot blast to 50 DEG C during without bonding phenomenon between particle, accelerate dry.Treat that particles no longer in cylinder sticks to the suspension liquid that inner wall of rotary drum also can not add sodium silicoaluminate mutually in the situation of bonding again, and so forth, until the suspension liquid of sodium silicoaluminate adds, and particle drying gets final product discharging.Record the clad ratio 98% of sodium silicoaluminate.
Claims (4)
1. the addition means with the flame-cooling agent of explosive for detonator allowed for use in coal mines, is characterized in that said method comprising the steps of:
The first step, is added to the water heating for dissolving by polyvinyl alcohol, forms polyvinyl alcohol water solution;
Second step, joins flame-cooling agent in cooled polyvinyl alcohol water solution, fully stirs, and forms suspension;
The 3rd step, is placed in the explosive molding powder preparing in the cylinder of cylinder coating machine rotary drum, the suspension that drips second step makes modeling powder wetting, passes into warm air drying, after being dried, adds suspension again, until suspension has added and is dry, make containing flame-cooling agent explosive and so forth.
2. the addition means of using the flame-cooling agent of explosive for detonator allowed for use in coal mines according to claim 1, the mass concentration that it is characterized in that the polyvinyl alcohol water solution described in the first step is 1 ~ 5%, Heating temperature is 80 ~ 95 DEG C.
3. the addition means of using the flame-cooling agent of explosive for detonator allowed for use in coal mines according to claim 1, is characterized in that the flame-cooling agent described in second step is sodium silicoaluminate or sodium fluoroaluminate, and polyvinyl alcohol accounts for 5% ~ 30% of flame-cooling agent quality.
4. the addition means of using the flame-cooling agent of explosive for detonator allowed for use in coal mines according to claim 1, is characterized in that the drying temperature described in the 3rd step is 25 ~ 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210532288.8A CN103864546A (en) | 2012-12-12 | 2012-12-12 | Adding method of flame inhibitor of coal mine permitted detonator explosive |
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| CN201210532288.8A CN103864546A (en) | 2012-12-12 | 2012-12-12 | Adding method of flame inhibitor of coal mine permitted detonator explosive |
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| CN103864546A true CN103864546A (en) | 2014-06-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937961A (en) * | 2019-12-23 | 2020-03-31 | 甘肃银光化学工业集团有限公司 | Mixed explosive of flame-retardant agent for coal mine and preparation method thereof |
| CN111018637A (en) * | 2019-12-23 | 2020-04-17 | 甘肃银光化学工业集团有限公司 | Flame-retardant mixed explosive and preparation method thereof |
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| CN1054968A (en) * | 1990-11-15 | 1991-10-02 | 阜新矿务局十二厂 | Detonator allowed for use in coal mines |
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Patent Citations (8)
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| GB747878A (en) * | 1954-02-01 | 1956-04-18 | Ici Ltd | New and improved detonating fuse cord |
| US4312272A (en) * | 1980-06-13 | 1982-01-26 | Apache Powder Company | Detonating cord with flash-suppressing coating |
| CN1054967A (en) * | 1990-11-15 | 1991-10-02 | 阜新矿务局十二厂 | A kind of high explosive and method for making thereof that is used for mine blasting equipment |
| CN1054968A (en) * | 1990-11-15 | 1991-10-02 | 阜新矿务局十二厂 | Detonator allowed for use in coal mines |
| CN1594244A (en) * | 2004-06-22 | 2005-03-16 | 张成君 | Method adding flame cooling agent into RDX |
| JP2007085632A (en) * | 2005-09-21 | 2007-04-05 | Asahi Kasei Chemicals Corp | Coated propellant |
| US20120273714A1 (en) * | 2010-01-19 | 2012-11-01 | Shaanxi J & R Fire Fighting Co., Ltd. | Catalytic chemical coolant for thermal aerosol and a preparation method thereof |
| EP2388244A1 (en) * | 2010-05-18 | 2011-11-23 | Diehl BGT Defence GmbH & Co.KG | Propellant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937961A (en) * | 2019-12-23 | 2020-03-31 | 甘肃银光化学工业集团有限公司 | Mixed explosive of flame-retardant agent for coal mine and preparation method thereof |
| CN111018637A (en) * | 2019-12-23 | 2020-04-17 | 甘肃银光化学工业集团有限公司 | Flame-retardant mixed explosive and preparation method thereof |
| CN110937961B (en) * | 2019-12-23 | 2021-09-10 | 甘肃银光化学工业集团有限公司 | Mixed explosive of flame-retardant agent for coal mine and preparation method thereof |
| CN111018637B (en) * | 2019-12-23 | 2021-11-16 | 甘肃银光化学工业集团有限公司 | Flame-retardant mixed explosive and preparation method thereof |
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Application publication date: 20140618 |