CN106431786B - A kind of method for separating graphite and being granulated graphite in fine explosive powder - Google Patents
A kind of method for separating graphite and being granulated graphite in fine explosive powder Download PDFInfo
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- CN106431786B CN106431786B CN201610797789.7A CN201610797789A CN106431786B CN 106431786 B CN106431786 B CN 106431786B CN 201610797789 A CN201610797789 A CN 201610797789A CN 106431786 B CN106431786 B CN 106431786B
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- graphite
- granulated
- explosive powder
- feed liquid
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0091—Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming
Abstract
The present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, include the following steps：1) graphite is granulated fine explosive powder and water mixes, obtain suspension；2) suspension and surfactant are mixed, obtains the first mixed liquor；3) first mixed liquor is layered, isolated level-one lower floor feed liquid；4) level-one lower floor feed liquid and organic solvent are mixed, obtains the second mixed liquor；5) second mixed liquor is layered, isolated Upper Tier II feed liquid；6) filtered after mixing the Upper Tier II feed liquid and water.Method provided by the invention sufficiently can spin off graphite from explosive powder and its binding agent contained, and then sufficiently graphite is removed.According to experimental result, the content of graphite handled through separation method provided by the invention in the fine explosive powder of the removing graphite obtained afterwards is extremely low, and content of graphite is less than 0.02%.
Description
Technical field
The present invention relates to graphite to be granulated explosive technical field, and more particularly to a kind of separation graphite is granulated graphite in fine explosive powder
Method.
Background technology
In bonded pelleting explosive manufacturing process, in order to improve the press-loading process of cemented explosive, product free-running property and
The accumulation of electrostatic is, it is necessary to which additional to product 0.1~1% graphite is passivated processing, Passivation Treatment between elimination product particle
Cemented explosive afterwards will screen out the cemented explosive fine powder containing a large amount of graphite.
At present, the processing method in the prior art on the cemented explosive fine powder of high content of graphite mainly has destruction method and returns
Work comminution granulation.However, the cemented explosive fine powder of these high content of graphite is handled according to the mode for granulation of doing over again, graphite is not
The granulating effect of bonded pelleting can be only influenced, while can also influence product appearance color and constituent content；According to the side of destruction
Formula is handled, and will not only cause manufacture cost to increase, while Destruction can also bring security risk and pollute ring
Border.
At present, not preferable method separates come the graphite being granulated to graphite in fine explosive powder in the prior art.
The content of the invention
It is an object of the invention to provide a kind of method for separating graphite and being granulated graphite in fine explosive powder.It is provided by the invention
Graphite can successfully be granulated in fine explosive powder and separate by separation method from graphite.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
The present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, include the following steps：
1) graphite is granulated fine explosive powder and water mixes, obtain suspension；
2) suspension and surfactant are mixed, obtains the first mixed liquor；
3) first mixed liquor is layered, isolated level-one lower floor feed liquid；
4) level-one lower floor feed liquid and organic solvent are mixed, obtains the second mixed liquor；
5) second mixed liquor is layered, isolated Upper Tier II feed liquid；
6) filtered after mixing the Upper Tier II feed liquid and water.
Preferably, it is 1 that graphite, which is granulated fine explosive powder and the mass ratio of water, in the step 1):(1~4).
Preferably, the surfactant is one kind in lauryl sodium sulfate, dodecyl sodium sulfate and soap flakes, two
Kind or three kinds.
Preferably, the quality of the surfactant is granulated the 0.1~0.2% of fine explosive powder quality for graphite.
Preferably, the temperature of suspension and the surfactant mixing is 40~50 DEG C.
Preferably, the organic solvent is ethyl acetate and/or chloroform.
Preferably, the quality of the organic solvent is granulated the 10~20% of fine explosive powder quality for graphite.
Preferably, level-one lower floor feed liquid and the temperature of organic solvent mixing are 40~50 DEG C.
Preferably, the mass ratio that graphite is granulated water in fine explosive powder and step 6) in the step 1) is 1:(1~4).
The present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, include the following steps：1) by stone
Ink is granulated fine explosive powder and water mixing, obtains suspension；2) suspension and surfactant are mixed, obtains the first mixing
Liquid；3) first mixed liquor is layered, isolated level-one lower floor feed liquid；4) by level-one lower floor feed liquid and organic solvent
Mixing, obtains the second mixed liquor；5) second mixed liquor is layered, isolated Upper Tier II feed liquid；6) by the two level
Filtered after lower floor's feed liquid and water mixing.Method provided by the invention can sufficiently by graphite from explosive powder and its in contain
Spin off in binding agent, and then sufficiently graphite is removed.According to experimental result, through separation provided by the invention
The content of graphite obtained after method processing in fine explosive powder is extremely low, and content of graphite is less than 0.02%.
Embodiment
The present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, include the following steps：
1) graphite is granulated fine explosive powder and water mixes, obtain suspension；
2) suspension and surfactant are mixed, obtains the first mixed liquor；
3) first mixed liquor is layered, isolated level-one lower floor feed liquid；
4) level-one lower floor feed liquid and organic solvent are mixed, obtains the second mixed liquor；
5) second mixed liquor is layered, isolated Upper Tier II feed liquid；
6) filtered after mixing the Upper Tier II feed liquid and water.
Graphite is granulated the present invention fine explosive powder and water mixes, and obtains suspension.In the present invention, the graphite is granulated fried
Medicine fine powder is the cemented explosive fine powder containing a large amount of graphite that is obtained in the prior art using graphite desensitized explosive process, the stone
The content that ink is granulated graphite in fine explosive powder is generally more than 0.3%.In the present invention, the graphite is granulated fine explosive powder and the
The mass ratio of a part of water is preferably 1:(1~4), more preferably 1:(1.5~3.5), are most preferably 1:(2~3).In the present invention
In, the graphite be granulated fine explosive powder can the fully dispersed suspension in Part I water, provide carrier for graphite.
After obtaining suspension, the present invention mixes the suspension and surfactant, obtains the first mixed liquor.In this hair
In bright, the surfactant is one kind in lauryl sodium sulfate, dodecyl sodium sulfate and soap flakes, two or three.
The present invention is not particularly limited the source of the surfactant, using surfactant well-known to those skilled in the art
, can be specifically the commercial product of the surfactant.
In the present invention, the quality of the surfactant be preferably graphite be granulated fine explosive powder quality 0.1~
0.2%, more preferably 0.12~0.18%, are most preferably 0.14~0.16%.In the present invention, the surfactant can be with
The surface tension of water is reduced, is conducive to graphite and comes off from blasting explosive granules surface.
In the present invention, the temperature of suspension and the surfactant mixing is preferably 40~50 DEG C, and more preferably 42
~48 DEG C, be most preferably 44~46 DEG C.Temperature is preferably risen to 40~50 DEG C by the present invention with the speed of 1~3 DEG C/min, more preferably
It is most preferably 1.8~2.3 DEG C/min for 1.5~2.5 DEG C/min；The time of the heating is preferably 10~25min, more preferably
It is most preferably 15~20min for 12~23min.
After obtaining the first mixed liquor, the present invention is layered first mixed liquor, isolated level-one lower floor feed liquid.This hair
It is bright preferably by stratification after first mixed liquor；The time of the stratification is preferably 5~10 minutes, and more preferably 6
~9 minutes, be most preferably 7~8 minutes.In the present invention, the separation is preferably the level-one upper liquid for obtaining stratification
Suction out, obtain level-one lower floor feed liquid.
After obtaining level-one lower floor feed liquid, the present invention mixes level-one lower floor feed liquid and organic solvent, and it is mixed to obtain second
Close liquid.In the present invention, the organic solvent is preferably ethyl acetate and/or chloroform；The organic solvent it is quality
Elect graphite is granulated fine explosive powder quality 10~20%, more preferably 12~18% as, be most preferably 14~16%.In the present invention
In, the organic solvent can dissolve the binding agent that graphite is granulated in explosive, and the dissolving of binding agent contributes to the further of graphite
Come off.
In the present invention, level-one lower floor feed liquid and the temperature of organic solvent mixing are preferably 40~50 DEG C, more preferably
It it is most preferably 44~46 DEG C for 42~48 DEG C.Temperature is preferably risen to 40~50 DEG C by the present invention with the speed of 1~3 DEG C/min, more
Preferably 1.5~2.5 DEG C/min, is most preferably 1.8~2.3 DEG C/min；The time of the heating is preferably 10~25min, more
Preferably 12~23min, is most preferably 15~20min.
After obtaining the second mixed liquor, the present invention is layered second mixed liquor, isolated Upper Tier II feed liquid.This hair
It is bright preferably by stratification after second mixed liquor；The time of the stratification is preferably 5~10 minutes, and more preferably 6
~9 minutes, be most preferably 7~8 minutes.In the present invention, the separation is preferably the Lower TierII liquid for obtaining stratification
Suction out, obtain the Upper Tier II feed liquid.
After obtaining Upper Tier II feed liquid, the present invention filters after mixing the Upper Tier II feed liquid and water.In the present invention,
It is preferably 1 that the graphite, which is granulated fine explosive powder and the mass ratio of water,:(1~4), more preferably 1:(1.5~3.5), are most preferably
1:(2~3).The present invention does not have particular/special requirement to the method for the filtering, using filtering side well-known to those skilled in the art
Formula carries out.
After the filtering terminates, the present invention preferably washes the solids being obtained by filtration.The present invention is to the water
Wash without particular/special requirement, can be by the impurity washes clean of solids surface adhesion.In the present invention, the washing
Number is preferably 3~5 times, can be specifically 3 times, 4 times or 5 times.In the present invention, last time filters after washing
The solids arrived is the fine explosive powder for removing graphite.
In the present invention, the mixing carries out under agitation.The present invention is not special to the speed of the stirring
It is required that mixture is enabled to be uniformly mixed.
The present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, include the following steps：1) by stone
Ink is granulated fine explosive powder and water mixing, obtains suspension；2) suspension and surfactant are mixed, obtains the first mixing
Liquid；3) first mixed liquor is layered, isolated level-one lower floor feed liquid；4) by level-one lower floor feed liquid and organic solvent
Mixing, obtains the second mixed liquor；5) second mixed liquor is layered, isolated Upper Tier II feed liquid；6) by the two level
Filtered after lower floor's feed liquid and water mixing.Method provided by the invention sufficiently from explosive powder and its can contain graphite viscous
Spin off in knot agent, and then sufficiently graphite is removed.According to experimental result, through separation side provided by the invention
Content of graphite in the fine explosive powder for the removing graphite that method processing obtains afterwards is extremely low, and content of graphite is less than 0.02%.
The graphite separation method for being granulated fine explosive powder to graphite provided by the invention with reference to embodiment carries out in detail
Illustrate, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
(a) graphite granulation fine explosive powder is added to the water, suspension is made in stirring, and the quality of water is granulated fine powder matter for graphite
1.0 times of amount；
(b) stirring and surfactant progress once washing, surfactant under 50 DEG C of states, are added into suspension
Addition is granulated the 0.1% of fine explosive powder quality for graphite, and the surfactant is lauryl sodium sulfate；
(c) suspension 5 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, part graphite is removed, obtains down
Layered material liquid；
(d) stirring and ethyl acetate solvent progress secondary washing under 50 DEG C of states, is added into feed liquid, ethyl acetate
Quality is granulated the 10% of fine powder quality for graphite；
(e) suspension 5 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, remaining graphite is removed, obtains down
Layered material liquid；
(f) water is added into feed liquid, and is dispersed with stirring, the quality of water is granulated 1.0 times of fine explosive powder quality for graphite；
(g) suspension filtered, washed, refiltered, obtain sloughing the fine explosive powder of graphite.
The component for the fine explosive powder for sloughing graphite that the present invention obtains the present embodiment is detected, testing result such as table
Shown in 1.
The composition of the fine explosive powder for the removing graphite that 1 embodiment 1 of table obtains
| Project name | Quality index |
| Explosive body content, %, >= | 99.8 |
| Content of graphite, % ,≤ | 0.02 |
As shown in Table 1, in the fine explosive powder that the removing graphite obtained afterwards is handled through separation method provided by the invention
Content of graphite is extremely low, and content of graphite is less than 0.02%.
Embodiment 2
(a) graphite granulation fine explosive powder is added to the water, suspension is made in stirring, and the quality of water is granulated fine powder matter for graphite
2 times of amount；
(b) stirring and surfactant progress once washing, surfactant under 45 DEG C of states, are added into suspension
Addition is granulated the 0.15% of fine explosive powder quality for graphite, and the surfactant is dodecyl sodium sulfate；
(c) suspension 8 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, part graphite is removed, obtains down
Layered material liquid；
(d) stirring and ethyl acetate solvent progress secondary washing under 45 DEG C of states, is added into feed liquid, ethyl acetate
Quality is granulated the 15% of fine powder quality for graphite；
(e) suspension 8 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, remaining graphite is removed, obtains down
Layered material liquid；
(f) water is added into feed liquid, and is dispersed with stirring, the quality of water is granulated 1.5 times of fine explosive powder quality for graphite；
(g) suspension filtered, washed, refiltered, obtain sloughing the fine explosive powder of graphite.
The component for the fine explosive powder for sloughing graphite that the present invention obtains the present embodiment according to the method for embodiment 1 carries out
Detection, testing result show that content of graphite is less than 0.02%.
Embodiment 3
(a) graphite granulation fine explosive powder is added to the water, suspension is made in stirring, and the quality of water is granulated fine powder matter for graphite
3.5 times of amount；
(b) stirring and surfactant progress once washing, surfactant under 40 DEG C of states, are added into suspension
Addition is granulated the 0.2% of fine explosive powder quality for graphite, and the surfactant is soap flakes；
(c) suspension 10 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, part graphite is removed, obtains
Lower floor's feed liquid；
(d) stirring and chloroform solvent progress secondary washing under 40 DEG C of states, is added into feed liquid, chloroform
Quality is granulated the 20% of fine powder quality for graphite；
(e) suspension 10 minutes are stood, the upper liquid of graphitiferous is just suctioned out from container, remaining graphite is removed, obtains
Lower floor's feed liquid；
(f) water is added into feed liquid, and is dispersed with stirring, the quality of water is granulated 2.0 times of fine explosive powder quality for graphite；
(g) suspension filtered, washed, refiltered, obtain sloughing the fine explosive powder of graphite.
The component for the fine explosive powder for sloughing graphite that the present invention obtains the present embodiment according to the method for embodiment 1 carries out
Detection, testing result show that content of graphite is less than 0.02%.
As seen from the above embodiment, the present invention provides a kind of method for separating graphite and being granulated graphite in fine explosive powder, bag
Include following steps：1) graphite is granulated fine explosive powder and water mixes, obtain suspension；2) by the suspension and surfactant
Mixing, obtains the first mixed liquor；3) first mixed liquor is layered, isolated level-one lower floor feed liquid；4) by the level-one
Lower floor's feed liquid and organic solvent mixing, obtain the second mixed liquor；5) second mixed liquor is layered, isolated Upper Tier II
Feed liquid；6) filtered after mixing the Upper Tier II feed liquid and water.Method provided by the invention can be sufficiently by graphite from fried
Spin off in medicinal powder grain and its binding agent contained, and then sufficiently graphite is removed.According to experimental result, warp
Content of graphite in the fine explosive powder for the removing graphite that separation method processing provided by the invention obtains afterwards is extremely low, content of graphite
Less than 0.02%.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of method for separating graphite and being granulated graphite in fine explosive powder, includes the following steps：
1) graphite is granulated fine explosive powder and water mixes, obtain suspension；
2) suspension and surfactant are mixed, obtains the first mixed liquor；The quality of the surfactant is graphite
It is granulated the 0.1~0.2% of fine explosive powder quality；
3) first mixed liquor is layered, isolated level-one lower floor feed liquid；
4) level-one lower floor feed liquid and organic solvent are mixed, obtains the second mixed liquor；
5) second mixed liquor is layered, isolated Upper Tier II feed liquid；
6) filtered after mixing the Upper Tier II feed liquid and water.
2. according to the method described in claim 1, it is characterized in that, graphite is granulated fine explosive powder and the matter of water in the step 1)
Amount is than being 1:(1~4).
3. according to the method described in claim 1, it is characterized in that, the surfactant is lauryl sodium sulfate, 12
One kind in sodium alkyl sulfonate and soap flakes, two or three.
4. according to the method described in claim 1, it is characterized in that, the suspension and the temperature of surfactant mixing are 40
~50 DEG C.
5. according to the method described in claim 1, it is characterized in that, the organic solvent is ethyl acetate and/or chloroform.
6. according to the method described in claim 5, it is characterized in that, the quality of the organic solvent is granulated fine explosive powder for graphite
The 10~20% of quality.
7. according to the method described in claim 6, it is characterized in that, level-one lower floor feed liquid and the temperature of organic solvent mixing
For 40~50 DEG C.
8. according to the method described in claim 1, it is characterized in that, graphite is granulated fine explosive powder and step 6) in the step 1)
The mass ratio of middle water is 1:(1~4).
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