CN112851450A - Powdery emulsion explosive for granite mine blasting and preparation method thereof - Google Patents
Powdery emulsion explosive for granite mine blasting and preparation method thereof Download PDFInfo
- Publication number
- CN112851450A CN112851450A CN202110096912.3A CN202110096912A CN112851450A CN 112851450 A CN112851450 A CN 112851450A CN 202110096912 A CN202110096912 A CN 202110096912A CN 112851450 A CN112851450 A CN 112851450A
- Authority
- CN
- China
- Prior art keywords
- emulsion explosive
- weight
- powdery
- parts
- granite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a powdery emulsion explosive for granite mine blasting, which is prepared by mixing 65-70 parts by weight of powdery rock emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite, wherein the powdery rock emulsion explosive is prepared by mixing 80-85 wt% of ammonium nitrate, 5-10 wt% of sodium nitrate, 4-4.5 wt% of water, 1-1.5 wt% of emulsifier and 4.5-5 wt% of special emulsion wax. The proportion and the production process of the original powdery emulsion explosive are changed by adding other substances such as salt, perlite and the like into the original powdery emulsion explosive, the powdery emulsion explosive accounts for 65-70 percent, and the other substances account for 30-35 percent, so that the density and the blasting performance of the original powdery emulsion are reduced. The molding is good after blasting, the lumpiness is large, and the requirements of users are met. The method has the advantages of high utilization rate of granite ore, low mining cost, less waste and environmental protection pollution reduction.
Description
Technical Field
The invention relates to the technical field of granite mine blasting, in particular to a powdery emulsion explosive for granite mine blasting and a preparation method thereof.
Background
The common industrial explosive with detonator sensitivity mainly comprises a water phase material containing ammonium nitrate and sodium nitrate and an oil phase material containing oil substances such as emulsifier, paraffin, vaseline and the like, the density is generally 0.95-1.18 g/cm3, and the industrial explosive is not suitable for granite exploitation due to large detonation sensitivity and large blasting power after blasting and small block size after blasting.
The granite mining needs to crack the working face of the rock body, the larger the block size after mining is, the better, therefore, the demand of low detonation velocity and low brisance explosive which need to be used for the open-pit granite mining is continuously increased, the special explosive for granite is a new industrial explosive which is formed by blending emulsion explosive and other low-density materials according to a certain proportion, and the special explosive for granite has the characteristics of moderate detonation, low detonation velocity and brisance and adjustable density, and is particularly suitable for the open-pit mining operation of granite and marble.
The safety protection by scientific and technological means is a necessary way for improving the intrinsic safety of civil explosive products. Following the market demand, in the market research, it is found that the stone breaking agent produced by a certain mineral pharmaceutical factory used in granite blasting operation comprises raw materials such as potassium nitrate, sulfur, charcoal and the like, wherein the additive No. 1 is added into the raw materials of potassium nitrate and then the raw materials are independently packaged to form a medicament No. 1, the additive No. 2 is added into the mixture of the sulfur and the charcoal and then the mixture is independently packaged to form a medicament No. 2, the medicament No. 1 and the medicament No. 2 are mixed to form a final product, namely the stone breaking agent, wherein the adding amount of the additive No. 1 and the additive No. 2 accounts for 2.3% of the weight of the final product formed by mixing the medicament No. 1 and the. The technique is a two-component explosive, i.e. composed of two non-explosive agents, and only when one agent is added into the other agent, an explosive mixture is formed. The No. 1 and No. 2 medicaments which are respectively and independently packaged can not be exploded when meeting flame, impact, friction, static electricity and the like in the production, transportation and storage processes, thereby ensuring the safety and reliability of the product in the storage and transportation processes. No. 1 and No. 2 agents are added together in blasting operation, potential safety hazards exist, simultaneously, a large amount of sulfur dioxide is generated after explosion to pollute the environment, and the stone breaking agent for originally exploiting granite has potential safety hazards in blasting operation and is forbidden in China at present.
Based on the above, the invention designs a powdery emulsion explosive for granite mine blasting and a preparation method thereof, which reduces the performance indexes of the density, sympathetic explosion, brisance and detonation velocity of the original powdery emulsion by adding other substances such as salt, perlite and the like and adjusting the process formula through repeated tests and technological formula of skilled personnel. The molding is good after blasting, the lumpiness is large, and the requirements of users are met. The method obtains the approval of users through multiple trials in the mine of the heaven and town, and fills the blank of products for granite mine exploitation.
Disclosure of Invention
The invention aims to provide a powdery emulsion explosive for granite mine blasting and a preparation method thereof, so as to solve the problems.
In order to achieve the purpose, the invention provides the following technical scheme: a powdery emulsion explosive for granite mine blasting is prepared by mixing 65-70 parts by weight of powdery rock emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite, wherein the powdery rock emulsion explosive is prepared by mixing 80-85 wt% of ammonium nitrate, 5-10 wt% of sodium nitrate, 4-4.5 wt% of water, 1-1.5 wt% of emulsifier and 4.5-5 wt% of special emulsion wax.
Preferably, the sodium chloride is industrial salt with the content of 99.5%.
Preferably, the perlite is hydrophobic perlite and has a bulk density of 00.45-0.065 g/cm3。
Preferably, 2727A type polymer emulsifier is preferably used as the emulsifier, and the special wax for emulsification is prepared by compounding 1-2 parts by weight of engine oil, 1-1.5 parts by weight of paraffin, 0.5-1.0 part by weight of microcrystalline wax and 0.5-1.0 part by weight of rosin.
Preferably, the preparation method of the powdery emulsion explosive for granite mine blasting comprises the following steps:
s1: mixing ammonium nitrate, sodium nitrate and water according to the weight percentage required for preparing the rock powdery emulsion explosive, and heating to 110-125 ℃ to completely dissolve the mixture to prepare an aqueous phase solution;
s2: mixing an emulsifier and special emulsifying wax according to the weight percentage required for preparing the rock powdery emulsified matrix, and heating to 100-120 ℃ to completely dissolve the emulsifier to prepare an oil phase solution;
s3: the prepared emulsion matrix is processed into yellow white powdery fine particles through a spray powder preparation system to form powdery emulsion explosive;
s4: and adding 65-70 parts by weight of rock powdery emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite into an open stirrer, and stirring for 8-10 minutes to prepare the high-density insensitive granite blasting special explosive.
Compared with the prior art, the invention has the beneficial effects that:
(1) the high-density insensitive granite blasting special explosive is an explosive obtained by mixing rock powdery emulsion explosive, sodium chloride and perlite, contains about 65-70 wt% of the rock powdery emulsion explosive, about 25-30 wt% of the sodium chloride and 5-10 wt% of common perlite, and has the advantages of few components, simple proportioning, simple production process, low manufacturing cost and capability of effectively reducing industrial energy consumption.
(2) The high-density granite special explosive disclosed by the invention has detonator sensitivity, is an insensitive explosive, greatly improves the safety of charging in construction during blasting, is very safe in production, storage, transportation and use, and has a stable storage period. And the powdery rock emulsion matrix used in the invention does not need sensitization, thereby solving the potential safety hazard caused by sensitization of the traditional emulsion explosive.
(3) Meanwhile, the special high-density inert granite blasting explosive disclosed by the invention has a low detonation velocity value and a moderate detonation value, the detonation velocity is generally 2000-2500 m/s, the detonation velocity is 6-8 mm, the sympathetic detonation value is 5-8cm, and the special high-density inert granite blasting explosive has a high working capacity.
(4) The high-density special explosive for granite blasting has good free-running property, can be prepared into coiled explosives with different specifications of 32-70 mm, improves the flexibility of explosive loading and the universality of use, has wide application environment, and is suitable for blasting granite and marble in complex environment.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: a powdery emulsion explosive for granite mine blasting is prepared by mixing 65-70 parts by weight of powdery rock emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite, wherein the powdery rock emulsion explosive is prepared by mixing 80-85 wt% of ammonium nitrate, 5-10 wt% of sodium nitrate, 4-4.5 wt% of water, 1-1.5 wt% of emulsifier and 4.5-5 wt% of special emulsion wax.
Wherein the sodium chloride is industrial salt with the content of 99.5 percent.
Wherein the perlite is hydrophobic perlite, and the bulk density is 00.45-0.065 g/cm3。
2727A type polymer emulsifier is preferably used as the emulsifier, and the special emulsifying wax is prepared by compounding 1-2 parts by weight of engine oil, 1-1.5 parts by weight of paraffin, 0.5-1.0 part by weight of microcrystalline wax and 0.5-1.0 part by weight of rosin.
Example 2
The preparation method of the powdery emulsion explosive for granite mine blasting comprises the following steps:
s1: mixing ammonium nitrate, sodium nitrate and water according to the weight percentage required for preparing the rock powdery emulsion explosive, and heating to 110-125 ℃ to completely dissolve the mixture to prepare an aqueous phase solution;
s2: mixing an emulsifier and special emulsifying wax according to the weight percentage required for preparing the rock powdery emulsified matrix, and heating to 100-120 ℃ to completely dissolve the emulsifier to prepare an oil phase solution;
s3: the prepared emulsion matrix is processed into yellow white powdery fine particles through a spray powder preparation system to form powdery emulsion explosive;
s4: and adding 65-70 parts by weight of powdery emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite into an open stirrer, and stirring for 8-10 minutes to prepare the high-density insensitive granite blasting special explosive.
The invention is compared with the prior stone cracking agent as follows, and is shown in table 1.
TABLE 1
The invention relates to a powdery emulsion explosive for granite mine blasting and a preparation method thereof, wherein salt, perlite and other substances are added into the original powdery emulsion explosive, so that the proportion of the original powdery emulsion explosive is changed, the production process is changed, the powdery emulsion explosive accounts for 65-70%, and the other substances account for 30-35%, so that the density and the blasting performance of the original powdery emulsion are reduced. The molding is good after blasting, the lumpiness is large, and the requirements of users are met. The method has the advantages of high utilization rate of granite ore, low mining cost, less waste and environmental protection pollution reduction.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A powdery emulsion explosive for granite mine blasting is characterized in that: the special emulsion explosive is prepared by mixing 65-70 parts by weight of powdery rock emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite, wherein the powdery rock emulsion explosive is prepared by mixing 80-85 wt% of ammonium nitrate, 5-10 wt% of sodium nitrate, 4-4.5 wt% of water, 1-1.5 wt% of emulsifier and 4.5-5 wt% of special emulsion wax.
2. The powdered emulsion explosive for granite mine blasting according to claim 1, wherein: the sodium chloride is industrial salt with the content of 99.5 percent.
3. The powdered emulsion explosive for granite mine blasting according to claim 1, wherein: the perlite is hydrophobic perlite, and the bulk density is 00.45-0.065 g/cm3。
4. The powdered emulsion explosive for granite mine blasting according to claim 1, wherein: 2727A type polymer emulsifier is preferably used as the emulsifier, and the special emulsifying wax is prepared by compounding 1-2 parts by weight of engine oil, 1-1.5 parts by weight of paraffin, 0.5-1.0 part by weight of microcrystalline wax and 0.5-1.0 part by weight of rosin.
5. A powdered emulsion explosive for granite mine blasting according to any of claims 1 to 4, characterized in that: the preparation method of the powdery emulsion explosive for granite mine blasting comprises the following steps:
s1: mixing ammonium nitrate, sodium nitrate and water according to the weight percentage required for preparing the rock powdery emulsion explosive, and heating to 110-125 ℃ to completely dissolve the mixture to prepare an aqueous phase solution;
s2: mixing an emulsifier and special emulsifying wax according to the weight percentage required for preparing the rock powdery emulsified matrix, and heating to 100-120 ℃ to completely dissolve the emulsifier to prepare an oil phase solution;
s3: the prepared emulsion matrix is processed into yellow white powdery fine particles through a spray powder preparation system to form powdery emulsion explosive;
s4: and adding 65-70 parts by weight of the powdery rock-shaped emulsion explosive, 25-30 parts by weight of sodium chloride and 5-10 parts by weight of perlite into an open stirrer, and stirring for 8-10 minutes to prepare the high-density insensitive granite blasting special explosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096912.3A CN112851450A (en) | 2021-01-25 | 2021-01-25 | Powdery emulsion explosive for granite mine blasting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096912.3A CN112851450A (en) | 2021-01-25 | 2021-01-25 | Powdery emulsion explosive for granite mine blasting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112851450A true CN112851450A (en) | 2021-05-28 |
Family
ID=76008594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110096912.3A Pending CN112851450A (en) | 2021-01-25 | 2021-01-25 | Powdery emulsion explosive for granite mine blasting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112851450A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107057C1 (en) * | 1994-03-25 | 1998-03-20 | Государственный научно-исследовательский институт "Кристалл" | Permissible explosive composition and method of preparation thereof |
| CN101323552A (en) * | 2007-06-12 | 2008-12-17 | 喀左县化工股份合作公司 | Coal mine admissible powdery emulsifying ammonium nitrate fuel explosive and preparing process thereof |
| CN103936535A (en) * | 2014-04-03 | 2014-07-23 | 安徽盾安民爆器材有限公司 | Powdery emulsion explosive and preparation method thereof |
| CN104262068A (en) * | 2014-09-15 | 2015-01-07 | 山西同德化工股份有限公司 | Low-explosion-speed rock powder emulsion explosive |
| CN105481620A (en) * | 2016-01-19 | 2016-04-13 | 中国矿业大学 | Special explosive for copper-A3 steel explosion welding and preparation method thereof |
| CN105949017A (en) * | 2016-04-27 | 2016-09-21 | 攀枝花学院 | Paste emulsified explosive for thin plate explosive welding |
-
2021
- 2021-01-25 CN CN202110096912.3A patent/CN112851450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107057C1 (en) * | 1994-03-25 | 1998-03-20 | Государственный научно-исследовательский институт "Кристалл" | Permissible explosive composition and method of preparation thereof |
| CN101323552A (en) * | 2007-06-12 | 2008-12-17 | 喀左县化工股份合作公司 | Coal mine admissible powdery emulsifying ammonium nitrate fuel explosive and preparing process thereof |
| CN103936535A (en) * | 2014-04-03 | 2014-07-23 | 安徽盾安民爆器材有限公司 | Powdery emulsion explosive and preparation method thereof |
| CN104262068A (en) * | 2014-09-15 | 2015-01-07 | 山西同德化工股份有限公司 | Low-explosion-speed rock powder emulsion explosive |
| CN105481620A (en) * | 2016-01-19 | 2016-04-13 | 中国矿业大学 | Special explosive for copper-A3 steel explosion welding and preparation method thereof |
| CN105949017A (en) * | 2016-04-27 | 2016-09-21 | 攀枝花学院 | Paste emulsified explosive for thin plate explosive welding |
Non-Patent Citations (2)
| Title |
|---|
| 孙酣经等: "《化工新材料产品及应用手册》", 31 January 2002 * |
| 汪旭光等: "路博润LZ2727A及LZ2727D型乳化剂制备粉状乳化炸药试验研究", 《中国民用爆破器材学会第六届年会论文集》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101323552B (en) | Coal mine admissible powdery emulsifying ammonium nitrate fuel explosive and preparing process thereof | |
| AU2015337861B2 (en) | Explosive composition and method of delivery | |
| CA2842822A1 (en) | Improved explosive composition comprising hydrogen peroxide and a sensitizer | |
| CN103724143B (en) | A kind of Rock powdery civil emulsion explosive and production technique thereof | |
| US5536897A (en) | Beneficial use of energy-containing wastes | |
| CN104045495A (en) | Viscous and granular anfo (ammonium nitrate and fuel oil) explosive and preparation method thereof | |
| CN102924195A (en) | Viscous porous granulated ammonium nitrate fuel oil explosive and preparation method thereof | |
| CN1884231A (en) | Water gel explosive with low detonation velocity for mining and method for producing same | |
| CN101323551B (en) | Rock powdery emulsifying ammonium nitrate fuel explosive and preparing process thereof | |
| CN113860976A (en) | Preparation method of hollow polymer microsphere sensitized emulsion explosive for explosive welding | |
| CN112851450A (en) | Powdery emulsion explosive for granite mine blasting and preparation method thereof | |
| CN103288568A (en) | Bulk emulsion explosive used for blasting underground mine and preparation method thereof | |
| CN1140484C (en) | Coal mine allowable powdered emulsified explosive and its production process | |
| EA015055B1 (en) | Emulsion explosive composition (variants) | |
| CN100386294C (en) | Porous mixed ammonium nitrate explosive | |
| CN104761418A (en) | Low-detonation-velocity explosive for explosive welding and preparation method thereof | |
| CN103242115B (en) | Water gel and ammonium nitrate fuel oil explosive and production method thereof | |
| CN1023796C (en) | Formula and preparation method of emulsion mixed explosive | |
| CN1084152A (en) | Solid (powdery) emulsion explosive | |
| CN114773133B (en) | Rock petroleum emulsion explosive for top hole charging | |
| US5017251A (en) | Shock-resistant, low density emulsion explosive | |
| CN114478144B (en) | Viscous powdery emulsion explosive for top hole and preparation method thereof | |
| CN110655433A (en) | High-performance mixed emulsion explosive and preparation method thereof | |
| MXPA01011820A (en) | Blasting method for reducing nitrogen oxide fumes. | |
| CN102659493A (en) | Emulsion explosive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |