CN119191922A - A special foaming agent for preparing emulsion explosive and preparation method thereof - Google Patents
A special foaming agent for preparing emulsion explosive and preparation method thereof Download PDFInfo
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- CN119191922A CN119191922A CN202411287211.8A CN202411287211A CN119191922A CN 119191922 A CN119191922 A CN 119191922A CN 202411287211 A CN202411287211 A CN 202411287211A CN 119191922 A CN119191922 A CN 119191922A
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- foaming agent
- emulsion explosive
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
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- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a foaming agent special for emulsion explosive and a preparation method thereof, wherein the foaming agent comprises, by weight, 10-15% of sodium nitrite, 1-2% of zinc nitrate, 0.2-0.5% of gelatin peptone, 2-3% of Tween 80, 10-15% of phosphoric acid, 5-10% of urea and 54.5-71.8% of water. The emulsion explosive prepared by the foaming agent has good blasting performance and storage performance.
Description
Technical Field
The invention relates to the technical field of emulsion explosives, in particular to a foaming agent special for emulsion explosives.
Background
The emulsion explosive is a mixed explosive, and is usually formed by uniformly dispersing inorganic oxidant salt solution in oil phase continuous medium of porous substances such as bubbles or hollow glass beads under the action of an emulsifier. The components of the emulsion explosive comprise oxidant, combustible agent, emulsifier, sensitizer, foaming agent, stabilizer and the like. Wherein the foaming agent forms tiny bubbles in the emulsified and shoveled colloid, and the tiny bubbles are utilized to generate hot spots so as to improve the density of the explosive. Currently, blowing agents are typically physical blowing agents and chemical blowing agents. The physical foaming agent has poor performance, large consumption and high cost, the property of the physical foaming agent is granular, the abrasion to preparation equipment is large, the formed bubbles of the common chemical foaming agent are unstable, sensitized bubbles are easy to escape, the dispersibility is poor, the explosion speed is low, and the surface tension of the foaming agent and an emulsified matrix is large, so that the storage stability of the foaming agent is poor.
Disclosure of Invention
Aiming at the defects of the foaming agent, the invention provides the foaming agent special for preparing the emulsion explosive, which can be rapidly dispersed in an emulsion matrix, can ensure that bubbles are stable and are not easy to escape, has good dispersibility and sensitization performance, and obviously improves the performance and storage effect of the emulsion explosive.
The invention provides a foaming agent special for preparing emulsion explosive, which comprises, by weight, 10-15% of sodium nitrite, 1-2% of zinc nitrate, 0.2-0.5% of gelatin peptone, 2-3% of tween 80, 10-15% of phosphoric acid, 5-10% of urea and 54.5-71.8% of water.
The invention also provides a method for preparing the foaming agent special for the emulsion explosive, which comprises the following steps:
adding water and Tween 80, stirring and mixing until no micelle exists, adding sodium nitrite, zinc nitrate, phosphoric acid and urea, stirring and mixing until no micelle exists, and finally adding gelatin peptone to obtain the special foaming agent for the emulsion explosive.
Specifically, step 1, adding water and Tween 80, and stirring for 20 minutes;
Step2, adding sodium nitrite, zinc nitrate, phosphoric acid and urea, and stirring for 1-2 hours;
and 3, adding gelatin peptone, and stirring for 1.5-2 hours until no micelle exists, so as to obtain the special foaming agent for the emulsion explosive.
The beneficial technical effects of the invention are as follows:
the traditional foaming agent is added with zinc nitrate, tween 80 and gelatin peptone, wherein the gelatin peptone is a green pure natural raw material, so that the surface tension of an emulsified base material is effectively reduced, the contact area of the foaming agent and the emulsified base material is increased, the zinc nitrate catalyzes the foaming efficiency, the tween 80 ensures that bubbles have good stability and are not easy to escape, the components in 3 are added into the foaming agent, the equipment abrasion in the process of preparing the emulsion explosive is reduced, and the performance and the storage effect of the emulsion explosive are obviously improved.
Detailed Description
The following examples of the present invention are described in detail, and are given by taking the technical scheme of the present invention as a premise, and the detailed implementation and specific operation procedures are given, but the protection scope of the present invention is not limited to the following examples.
Example 1 foaming agent 1 specially for emulsion explosive
Adding water and Tween 80 according to the weight percentages of the components, stirring for 20 minutes until no micelle exists, adding sodium nitrite, zinc nitrate, phosphoric acid and urea, stirring for 2 hours until no micelle exists, and finally adding gelatin peptone, stirring for 2 hours until no micelle exists, thus obtaining the foaming agent special for the emulsion explosive.
Example 2 foaming agent 2 specially for emulsion explosive
Adding water and Tween 80 according to the weight percentages of the components, stirring for 20 minutes until no micelle exists, adding sodium nitrite, zinc nitrate, phosphoric acid and urea, stirring for 2 hours until no micelle exists, and finally adding gelatin peptone, stirring for 2 hours until no micelle exists, thus obtaining the foaming agent special for the emulsion explosive.
Example 3:
The foaming agent 1 or 2 special for the emulsion explosive is used for preparing the emulsion explosive, and the specific preparation method is as follows:
(1) The water phase preparation comprises the steps of injecting 8 parts by mass of water into a tank body, pressurizing by steam to the temperature of 100 ℃, and maintaining the steam pressure at 0.5Mp, adding 7 parts by mass of calcium nitrate into the tank body, stirring and dissolving, adding 78 parts by mass of ammonium nitrate, stirring and dissolving at 100 ℃, wherein the ammonium nitrate is an ammonium nitrate aqueous solution with the mass content of 90%, and the concentration of the calcium nitrate is 30%;
(2) The oil phase preparation comprises mixing 2.5 parts by mass of compound wax and 2.2 parts by mass of traditional emulsifier (span-80), and continuously stirring for dissolution;
(3) Emulsifying and sensitization, namely mixing the water phase and the oil phase according to the proportion of 9:1 for emulsification, cooling and transferring into a sensitization machine, adding 0.4 part by mass of special foaming agent 1 or special foaming agent 2 for uniform spraying, stirring and sensitization by upper and lower layers of the sensitization machine, and finally charging and packaging.
The prepared colloidal emulsion explosive is subjected to performance test, and the results are shown in the following table:
Remarks are that the middle/left side of the numerical value is the foaming agent 1 special for the emulsion explosive and the right side is the foaming agent 2 special for the emulsion explosive.
Comparative example 1:
the emulsion explosive is prepared by adopting a common traditional foaming agent, wherein the common traditional foaming agent comprises the following components in percentage by weight: 10% of sodium nitrite, 10% of phosphoric acid, 5% of urea and 75% of water, and the preparation method comprises the following steps:
Adding water, sodium nitrite, phosphoric acid and urea, stirring and mixing until no micelle exists, and obtaining the common traditional foaming agent.
Other emulsion explosives were prepared in the same manner as in example 3 and tested for performance, and the results are shown in the following table:
Comparative example 2
The prior art is adopted to prepare the emulsion explosive by improving the foaming agent, wherein the foaming agent comprises the following components, sodium nitrite, phosphoric acid, urea, kudzuvine root powder, sodium dodecyl sulfate and water, wherein the specific weight percentages of the components are as follows: 10% of sodium nitrite, 10% of phosphoric acid, 5% of urea, 2% of kudzuvine root powder, 0.5% of sodium dodecyl sulfate and 72.5% of water, and the preparation method comprises the following steps:
adding water, radix Puerariae powder, sodium nitrite, phosphoric acid, urea and sodium dodecyl sulfate, stirring and mixing until no micelle exists, and obtaining the foaming agent.
Other emulsion explosives were prepared in the same manner as in example 3 and tested for performance, and the results are shown in the following table:
Compared with the traditional foaming agent and the improved foaming agent, the special foaming agent for the emulsion explosive is added with zinc nitrate, tween 80 and gelatin peptone, so that the surface tension of an emulsion matrix is effectively reduced, the contact area between the foaming agent and the emulsion matrix is increased, the foaming is catalyzed, the stability of bubbles is good, the bubbles are not easy to escape, and the performance and the storage effect of the emulsion explosive are remarkably improved.
The invention is not limited to the embodiments described above, but several modifications may be made by a person skilled in the art without departing from the principle of the invention, which modifications are also considered to be within the scope of the invention. The preparation of emulsion explosives in this specification is well known to those skilled in the art and will not be repeated here.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411287211.8A CN119191922A (en) | 2024-09-13 | 2024-09-13 | A special foaming agent for preparing emulsion explosive and preparation method thereof |
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| CN202411287211.8A CN119191922A (en) | 2024-09-13 | 2024-09-13 | A special foaming agent for preparing emulsion explosive and preparation method thereof |
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| CN119191922A true CN119191922A (en) | 2024-12-27 |
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| CN202411287211.8A Pending CN119191922A (en) | 2024-09-13 | 2024-09-13 | A special foaming agent for preparing emulsion explosive and preparation method thereof |
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