CN1220657C - Modified powdered ammonium nitrate explosive and its preparing process - Google Patents
Modified powdered ammonium nitrate explosive and its preparing process Download PDFInfo
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- CN1220657C CN1220657C CN 03124419 CN03124419A CN1220657C CN 1220657 C CN1220657 C CN 1220657C CN 03124419 CN03124419 CN 03124419 CN 03124419 A CN03124419 A CN 03124419A CN 1220657 C CN1220657 C CN 1220657C
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- ammonium nitrate
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Abstract
The present invention relates to a powdered ammonium nitrate explosive and its preparation method. By adding a trace amount of modifier into ammonium nitrate, the modified powdery ammonium nitrate explosive which does not contain trinitrotoluene or has low trinitrotoluene content, high density, large work capacity and low cost and is used for engineering blasting or coal mines is prepared; and according to the existing production plant for producing powdery ammonium nitrateDifferent production equipment provides a continuous production method for rapidly transferring the modified powdery ammonium nitrate explosive. Compared with the prior art, the invention has the advantages of simple process, short process route, shortened process time, energy saving, consumption reduction, increased feeding amount and no seasonal limitation on production. The natural bulk density of the modified compact ammonium nitrate prepared by the method is 0.8-1.0 g/cm3(ii) a The specific surface area is 1.1351g/m2The particle size of compact and solid modified ammonium nitrate particles is 20-80 microns and accounts for 50-99%, the capability of bearing reducing agent composite oil phase is strong, and the prepared modified powdery ammonium nitrate explosive realizes no high explosive sensitization, has good detonation sensitivity and high storage stability which is improved to more than one year.
Description
Technical field: the invention belongs to the manufacture method that industrial explosive is made field, especially powder ammonium nitrate explosive and powder ammonium nitrate explosive thereof.
Background technology: at present, China's powder ammonium nitrate explosive kind has new No. two rock explosives, bulking ammonium nitrate explosive (Chinese patent 91107051.6), emulsified powdered nitramon (Chinese patent 91107080.X).Though these new variety civil explosives have solved some problems that industrial powdered ammonium nitrate explosive exists from different technological approaches during producing, store and transport and using,, it is still higher that above-mentioned explosive kind all exists Toxic tritonal content; In containing moisture starting material ammonium nitrate seldom, add water expelling water drying again, its operational path is long, energy consumption is big, manufacturing cost is high, expanded or the emulsified powder-like explosive that makes, because the charge density of the bulk explosive of lightweight reduces, cause the blast hole charging dose to reduce, the comprehensive perforated blasting cost of mine engineering explosion increases; And, influenced the stable and production efficiency of quality product because operational path is long and discontinuous production.
Summary of the invention: purpose of the present invention just is can not contain tritonal or the low modified and powered ammonium nitrate explosive that the engineering explosion that high-density, capacity for work are big, cost is low is used or the colliery is used of tritonal content by adding micro-properties-correcting agent and then make in ammonium nitrate.
Another object of the present invention provides existing and produces under the different tooling device condition of explosive factory the production method of the modified and powered ammonium nitrate explosive of the present invention of changing the line of production rapidly.
The object of the present invention is achieved like this: a kind of modification powder (grain) shape ammoniumnitrate explosives, and its component and mass percent are as follows:
A, the compact powdered ammonium nitrate 95～70% of modification
B, wood powder 0～10%
C, compound oil phase 2～10%
D, TNT powder 0～20%
E, villaumite 0～25%
The compact powdered ammonium nitrate of modification described in the above-mentioned explosive component is by ammonium nitrate and account for ammonium nitrate total mass 0.01～0.5%WT type composite modifier system of mixing and form; The component and the mass percent of WT type composite modifier are: octadecane amine sulfonate 40～100%; Plant gum powder 0～8%; Super absorbent resin cosmetics 0～8%; Wood charcoal powder 0～10%; Wherein a kind of or mixture 0～40% of white carbon black, wilkinite, diatomite.
Compound oil phase is the product (Q/LH02-2002) that Chengdu heavenly steed chemical industry limited liability company produces.
It is as follows to prepare above-mentioned method of filling explosive:
At first prepare WT type composite modifier, the production technique of WT type composite modifier is: the raw material baking expelling water that aforementioned proportion is equipped with to moisture content less than 3%, the cooling back is pulverized and is mixed to 90% above powder by 100 mesh sieve, moisture is less than 5%, screen undersize (WT type composite modifier) is packed, used when preparing explosive in order to following several different tooling devices.
1. explosive continuous production equipment is wheel roller or during for the combination of wheel roller, continuous ball mill, the preparation method of filling explosive is:
1) will be equipped with good ammonium nitrate in turn, WT type composite modifier drops in the wheel roller, pulverizes, drying, kneading, modification densification, 80～120 ℃ of temperature are treated the dry dirt that rises of ammonium nitrate, promptly make modification densification ammonium nitrate;
2) after the 1st step, ammonium nitrate drying played dirt, add compound oil phase, continue to roll discharging in 5～10 minutes, 90～120 ℃ of drop temperatures;
3) all the other raw materials in the 2nd step discharging material and the prescription are entered mixed medicine in wheel roller or the continuous ball mill through the hopper that respectively connects material of wheel roller or continuous ball mill respectively, temperature in the continuous ball mill is transferred to 30～50 ℃, material is 2～10 minutes residence times in machine, 45～55 ℃ of drug medicine temperature;
4) mixed material is sent the packing shop packing.Explosive product.
2. explosive continuous production equipment is primary crusher, hot blast cam pulverizer, cyclonic separator, shredder, wheel roller combination or during for primary crusher, hot blast cam pulverizer, cyclonic separator, shredder, continuous ball mill combination, the preparation method of filling explosive is:
1) will be equipped with good ammonium nitrate, WT type composite modifier in turn and drop in the primary crusher coarse crushing after spiral pre-mixing;
2) material behind the coarse crushing premix is sent into hot blast cam pulverizer and carried out precomminution, predrying, pre-mixing, the fine and close pre-treatment of pre-modification, 100～125 ℃ of hot-air flow temperature;
3) the pretreated material of modification is sent cyclonic separator separate, isolated temperature of charge is 75 ± 5 ℃;
4) isolated material is sent into directly shredder grinds, modification, and discharging continuously, grinding built-in temperature is 125 ± 5 ℃, makes the compact powdered ammonium nitrate of modification;
5) all the other raw materials in discharging material and the prescription are entered through respectively connect material hopper and the oil phase adding set of wheel roller or continuous ball mill respectively mix medicine in wheel roller or the continuous ball mill, temperature in the continuous ball mill is transferred to 30～50 ℃, material residence time in machine is 2～10 minutes, and drug medicine temperature is 45～55 ℃;
6) mixed material is sent the packing shop packing.Explosive product.
3. when explosive continuous production equipment was primary crusher, shredder, continuous ball mill combination, the preparation method of filling explosive was:
1) will be equipped with good ammonium nitrate, WT type composite modifier in turn drops in the primary crusher after the coarse crushing, through spiral pre-mixing;
2) material behind the premix is sent into the continuous modification shredder, grind 100～130 ℃ of built-in temperatures, material is 2～10 minutes residence times in machine, make the compact powdered ammonium nitrate of modification;
3) all the other raw materials in compact powdered ammonium nitrate of the modification that makes and the prescription are entered through respectively connect material hopper and the oil phase adding set of continuous ball milling mixing machine respectively mix medicine, the medicine of a cold nature in the continuous ball mill, thermostat temperature is 30～50 ℃ in the continuous ball mill, material residence time in machine is 2～10 minutes, 45～55 ℃ of drug medicine temperature;
4) material that mixes is sent the packing shop packing.Explosive product.
High energy homogeneous explosive all possesses highdensity advantage, key problem in technology of the present invention is how to make the heterogeneous body ammoniumnitrate explosives to transform to the homogeneous high explosive, the present invention has studied the natural tap density that increases ammonium nitrate granule intensity, increases ammonium nitrate granule, the technological approaches of saving energy and reduce the cost, shorten operational path, adopt to add micro-properties-correcting agent with ammonium nitrate safety, be treated to modified ammonium nitrate fast, quickly and easily, and then make modified and powered ammonium nitrate explosive of the present invention.
Advantage of the present invention is: modified and powered ammonium nitrate explosive preparation technology provided by the invention can go into operation rapidly on the tooling device basis of existing production powder ammonium nitrate explosive, has significantly reduced the disposable input of factory; Compare with former technology that manufacture method of the present invention is easy, operational path short, shortened the process time, can not contain tritonal, save energy and reduce the cost, increased charging capacity, produce and be not subject to seasonal restrictions.
The fine and close ammonium nitrate of the modification that makes according to the present invention, natural tap density is 0.8～1.0g/cm
3Specific surface area is 1.1351g/m
2Wherein fine and close solid modified ammonium nitrate grain graininess is that 20～80 μ m account for 50～99%, carrying reductive agent compounded oil phase ability is strong, the modified and powered ammonium nitrate explosive of making, realized that no high explosive sensitization, high-density small diameter medicine roll have good detonation sensitivity, package stability was brought up to more than 1 year.
Embodiment:
At first prepare WT type composite modifier.Component, weight percent and the charging capacity such as the table 1 of WT type composite modifier:
| The starting material title | Proportioning (%) | Charging capacity (g) | The starting material source |
| Octadecane amine sulfonate | 70 | 70 | Changsha Mining ﹠ Metallurgy Inst |
| High hydrophilous resin | 5 | 5 | Industrial goods |
| Wood charcoal powder | 5 | 5 | Industrial goods |
| White carbon black | 20 | 20 | Industrial goods |
The production technique of preparation WT type composite modifier is: each raw material that above-mentioned definite ratio is equipped with is 2.5% 85 ℃ of baking expelling water to moisture contents, after treating that material is cooled to room temperature, use diameter 300mm, abrading-ball is that the ball mill mill of porcelain ball mixes discharging in 90 minutes, discharging powder 95% is by 100 mesh sieve (being the WT type composite modifier of described proportioning), moisture is 3.5%, and screen undersize is packed, and is standby.
Embodiment 1:
The component and the weight percent of modification ammoniumnitrate explosives are as follows:
Ammonium nitrate (industrial goods) 92%
Wood powder (90% crosses 40 mesh sieve moisture content less than 3%) 5%
Compound oil phase (Q/LH 02-2002) 3.0%
WT type composite modifier (adding) 0.3%
Adopt the 1st kind of preparation technology's method:
1) in turn ammonium nitrate 920 gram, WT type composite modifier 3 grams are dropped in the wheel rollers, pulverize, drying, kneading, modification densification, 100 ℃ of temperature rolled 20 minutes, treated the dry dirt of ammonium nitrate, made the compact powdered ammonium nitrate of modification;
2) behind the dry dirt of the 1st step nitramine, add compound oil phase 30 grams, continue to roll discharging in 5 minutes, 95 ℃ of drop temperatures;
3) the 2nd step discharging material and 50 gram wood powders are dropped into mixed medicine in the continuous ball mill through each hopper respectively, the continuous ball mill thermostat temperature is 35 ℃, and 6 minutes residence times in the material machine, drug medicine temperature is 45 ℃;
4) the 3rd step is mixed explosive becomes powder stick, (test result sees Table 2) with Φ 32mm paraffin paper barrier packaging.
Embodiment 2:
The component and the weight percent of modification ammoniumnitrate explosives are as follows:
Ammonium nitrate (industrial goods) 74.8%
TNT powder (industrial goods) 5.0%
Wood powder (90% crosses 40 mesh sieve moisture content less than 3%) 4.0%
Compound oil phase (Q/LH 02-2002) 1.2%
Sodium-chlor (industrial goods) 15.0%
WT type composite modifier (adding) 0.3%
Adopt second kind of preparation technology's method:
1) in turn ammonium nitrate 748 gram, WT type composite modifier 3 grams are dropped in the primary crushers coarse crushing after spiral pre-mixing;
2) material behind the coarse crushing premix is sent into hot blast cam pulverizer and carried out precomminution, predrying, pre-mixing, the fine and close pre-treatment of pre-modification, the hot-air flow temperature is 115 ℃;
3) the pretreated material of modification is sent cyclonic separator separate, isolated material material temperature is 80 ℃;
4) isolated material is sent into directly shredder grinds, modification, made the compact powdered ammonium nitrate of modification, and discharging continuously, the shredder temperature is 120 ℃;
5) compact powdered ammonium nitrate of modification and the compound oil phase of 12 grams, 40 are restrained wood powders, 50 gram TNT powder, 150 gram sodium-chlor respectively through each hopper of ball milling mixing machine and oil phase adding set enter mixed medicine, the medicine of a cold nature in the continuous ball mill continuously, the continuous ball mill temperature is 35 ℃, and material is 8 minutes residence times in machine; Drug medicine temperature is 45 ℃;
6) the 5th step is mixed explosive becomes powder stick with Φ 32mm paraffin paper barrier packaging.(test result sees Table 2).
Embodiment 3:
The component and the weight percent of modification ammoniumnitrate explosives are as follows:
Ammonium nitrate (industrial goods) 92%
Wood powder 5%
Compound oil phase (Q/LH 02-2002) 3.0%
WT type composite modifier (adding) 0.3%
Adopt the 2nd kind of preparation technology's method:
1) in turn ammonium nitrate 920 gram, WT type composite modifier 3 grams are dropped in the primary crushers coarse crushing after spiral pre-mixing;
2) material behind the coarse crushing premix is sent into hot blast cam pulverizer and carried out precomminution, predrying, pre-mixing, the fine and close pre-treatment of pre-modification, the hot-air flow temperature is 120 ℃;
3) the pretreated material of modification is sent cyclonic separator separate, isolated material material temperature is 80 ℃;
4) isolated material is sent into directly shredder grinds, modification, made the compact powdered ammonium nitrate of modification, and discharging continuously, the shredder thermostat temperature is 120 ℃;
5) the compact powdered ammonium nitrate of modification and the compound oil phase of 30 grams, 50 gram wood powders are dropped into mixed medicine in the continuous ball mill through each hopper of continuous ball mill and oil phase adding set respectively, 35 ℃ of continuous ball mill thermostat temperatures, 6 minutes residence times in the material machine, drug medicine temperature is 45 ℃;
6) the 5th step is mixed explosive becomes powder stick (test result sees Table 2) with Φ 32mm paraffin paper barrier packaging.
Embodiment 4
The component and the weight percent of modification ammoniumnitrate explosives are as follows:
Ammonium nitrate (industrial goods) 95.0%
Compound oil phase (Q/LH 02-2002) 5.0%
WT type composite modifier (adding) 0.3%
Adopt the 3rd kind of preparation technology's method:
1) in turn with after the coarse crushing in ammonium nitrate 1900 grams, the WT type composite modifier 6 gram input primary crushers, through spiral pre-mixing;
2) material behind the premix is sent into the continuous modification shredder, the shredder temperature is 125 ℃, 8 minutes residence times in the material machine, makes the fine and close ammonium nitrate powder of modification;
3) with fine and close ammonium nitrate powder of modification and the compound oil phase of 100 grams, enter and mix medicine, the medicine of a cold nature in the continuous ball mill through connect material hopper and oil phase adding set of the continuous fine and close ammonium nitrate powder of modification of ball milling mixing machine respectively, the continuous ball mill temperature is 35 ℃, and material residence time in machine is 8 minutes; Drug medicine temperature is 45 ℃.
4) the 3rd step is mixed explosive is packaged into powder stick (test result sees Table 2) with Φ 32mm paraffin paper tube, Φ 60mm plastics tubing respectively.
Embodiment 5
The component and the weight percent of modification ammoniumnitrate explosives are as follows:
Ammonium nitrate (industrial goods) 80%
Compound oil phase (Q/LH 02-2002) 2.0%
TNT powder 18%
WT type composite modifier (adding) 0.3%
Adopt the 3rd kind of preparation technology's method:
1) in turn with after the coarse crushing in ammonium nitrate 800 grams, the WT type composite modifier 3 gram input primary crushers, through spiral pre-mixing;
2) material behind the premix is sent into the continuous modification shredder, the shredder temperature is 125 ℃, and material residence time in machine is 8 minutes;
3) fine and close ammonium nitrate powder 800 grams of the discharging modification of grinding and compound oil phase 20 grams, TNT powder 180 grams, enter and mix medicine, the medicine of a cold nature in the continuous ball mill through connect material hopper and oil phase adding set of the continuously fine and close ammonium nitrate powder of modification, the TNT powder of ball milling mixing machine respectively, the continuous ball mill temperature is 35 ℃, and material residence time in machine is 8 minutes; Drug medicine temperature is 45 ℃;
4) the 3rd step is mixed explosive is packaged into powder stick (test result is listed in table 2) with Φ 60mm plastics tubing.
Table 2 table with test results
| Embodiment 1 | Embodiment 2 collieries are used | Embodiment 3 | Embodiment 4 | Embodiment 4 | Embodiment 5 | |
| Explosion velocity (m/s) | 3400～ 3600 | 3400～ 3600 | 3600～ 4000 | 3800～ 4000 | 4300～ 4500 | 5200～ 5400 |
| Constraint condition | Φ 32mm paraffin paper tube | Φ 32mm paraffin paper tube | Φ 32mm paraffin paper tube | Φ 32mm paraffin paper tube | Φ 60mm plastics tubing | Φ 60mm plastics tubing |
| Charge density (g/cm 3) | 1.05 | 1.05 | 1.05 | 1.10 | 1.22 | 1.30 |
| The detonation continuity test | / | / | / | / | 4504 * | 5340 ** |
| Shelf stable for periods (moon) | 12 | 12 | 12 | 12 | 12 | 12 |
*: ten powder columns in air one connect one pendulum be straight continuously, an end is with 1 No. 8 blasting cap initiation, whole detonations, the explosion velocity that records last powder column is 4504m/s.
*: ten powder columns in air one connect one pendulum be straight continuously, an end is with 1 No. 8 blasting cap initiation, whole detonations, the explosion velocity that records last powder column is 5340m/s.
Claims (4)
1. modified and powered ammonium nitrate explosive, the component and the mass percent of its explosive are: the compact powdered ammonium nitrate of modification is 70～95%; Wood powder is 0～10%; Compound oil phase is 2～10%; Villaumite is 0～25%; The TNT powder is 0～20%.
2. modified and powered ammonium nitrate explosive according to claim 1 is characterized in that: the compact powdered ammonium nitrate of modification is by ammonium nitrate and account for ammonium nitrate total mass 0.01～0.5%WT type composite modifier system of mixing and form; The component and the mass percent of WT type composite modifier are: octadecane amine sulfonate: 40～100%; Plant gum powder: 0～8%; Super absorbent resin cosmetics: 0～8%; Wood charcoal powder: 0～10%; Wherein a kind of or mixture of white carbon black, wilkinite, diatomite: 0～40%.
3. method of making the described modified and powered ammonium nitrate explosive of claim 1, its method is:
(1) explosive continuous production equipment is wheel roller or during for the combination of wheel roller, continuous ball mill, its step is: 1. in turn ammonium nitrate, WT type composite modifier are dropped in the wheel roller, pulverize, drying, kneading, modification densification, 80～120 ℃ of temperature, treat that ammonium nitrate drying plays dirt, promptly make the fine and close ammonium nitrate of modification; 2. after the first step ammonium nitrate drying plays dirt, add compound oil phase, continue to roll discharging in 5～10 minutes, 90～120 ℃ of drop temperatures; 3. the 2nd step discharging material and all the other raw materials are entered mixed medicine in wheel roller or the continuous ball mill through the hopper that respectively connects material of wheel roller or continuous ball mill respectively, the continuous ball mill thermostat temperature is 30～50 ℃, 2～10 minutes residence times in the material machine, 45～55 ℃ of drug medicine temperature; 4. send packing shop with mixed material;
(2) explosive continuous production equipment is primary crusher, hot blast cam pulverizer, cyclonic separator, shredder, wheel roller combination or during for primary crusher, hot blast cam pulverizer, cyclonic separator, shredder, continuous ball mill combination, the steps include: 1. in turn ammonium nitrate, WT type composite modifier to be dropped in the primary crusher coarse crushing after spiral pre-mixing; 2. the material behind the coarse crushing premix is sent into hot blast cam pulverizer and carried out precomminution, predrying, pre-mixing, the fine and close pre-treatment of modification, 100～125 ℃ of hot-air flow constant temperature; 3. the pretreated material of modification is sent cyclonic separator to separate, isolated material material temperature is 75 ± 5 ℃; 4. isolated material is sent into directly that shredder grinds, modification, and discharging continuously, the shredder thermostat temperature is 125 ± 5 ℃, makes the compact powdered ammonium nitrate of modification; 5. the compact powdered ammonium nitrate of modification and all the other raw materials are entered mixed medicine in wheel roller or the continuous ball mill through the hopper that respectively connects material of wheel roller or continuous ball mill respectively, thermostat temperature is 30～50 ℃ in the continuous ball mill, 2～10 minutes residence times in the material machine; 6. send packing shop with mixed material;
When (3) explosive continuous production equipment is primary crusher, shredder, continuous ball mill combination, the steps include: 1. in turn with after the coarse crushing in ammonium nitrate, the WT type composite modifier input primary crusher, through spiral pre-mixing; 2. the material behind the premix is sent into the continuous modification shredder, grind 100～130 ℃ of built-in temperatures, 2～10 minutes residence times in the material machine; 3. the material after grinding and all the other raw materials enter mixed medicine, the medicine of a cold nature in the continuous ball mill through the hopper that respectively connects material of continuous ball milling mixing machine respectively, and thermostat temperature is 30～50 ℃ in the continuous ball mill, 2～10 minutes residence times in the material machine; 4. send packing shop with mixed material.
4. the method for modified and powered ammonium nitrate explosive according to claim 3, it is characterized in that: the composite modified agent producing process of WT type is: with each raw material of WT type composite modifier baking expelling water to moisture content less than 3%, the cooling back is pulverized and is mixed to 90% left and right sides powder by 100 mesh sieve, moisture is less than 5%, packages spare.
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|---|---|---|---|
| CN 03124419 CN1220657C (en) | 2003-05-27 | 2003-05-27 | Modified powdered ammonium nitrate explosive and its preparing process |
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|---|---|---|---|
| CN 03124419 CN1220657C (en) | 2003-05-27 | 2003-05-27 | Modified powdered ammonium nitrate explosive and its preparing process |
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| CN1220657C true CN1220657C (en) | 2005-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554241A (en) * | 2016-08-03 | 2017-04-05 | 湖北凯龙化工集团股份有限公司 | High density bulking ammonium oil explosive-source explosive post production line and production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746074B (en) * | 2012-08-06 | 2015-07-15 | 长沙亦川机电设备科技有限责任公司 | Method for sensitizing explosives |
| CN103360185B (en) * | 2013-03-28 | 2016-03-09 | 北京理工大学 | A kind of round and smooth treatment unit of CL-20 particle and slip processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554241A (en) * | 2016-08-03 | 2017-04-05 | 湖北凯龙化工集团股份有限公司 | High density bulking ammonium oil explosive-source explosive post production line and production method |
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| CN1468832A (en) | 2004-01-21 |
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