Emulsion explosive permissible in grade-three coal mine

A technology of emulsified explosives and coal mines, applied in explosives, non-explosive/non-thermal agent components, offensive equipment, etc., to achieve good foam-fixing ability, obvious effect, and strong water resistance

Inactive Publication Date: 2016-07-06
雅化集团旺苍化工有限公司
View PDF14 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the above conditions, the existing three-level coal mine permitted emulsion explosives have made a corresponding compromise on the combination of emulsifiers, flame suppressants and sensitizers, so that the explosion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] 70.0~80.0 parts of ammonium nitrate

[0028] 7.0~11.0 parts of sodium nitrate

[0029] 7.5~11.0 parts of water

[0030] 6-10 parts of sodium chloride

[0031] 1.2~1.5 parts of microcrystalline wax

[0032] Continuous phase 3.5~4.8 parts

[0033] Emulsifier 2~2.5 parts

[0034] 0.3~0.6 parts of sensitizer.

[0035] The continuous phase is selected from one or more mixtures of normal third line oil, vacuum distillate oil, vacuum wax paste, residual oil wax paste, light deasphalted oil, and heavy deasphalted oil.

[0036] The emulsifier is prepared by the following method:

[0037] According to weight percentage, 60% sorbitan monooleate and 5% polyacrylamide are mixed and heated to 75°C, then 35% soy lecithin is added and stirred at 75°C for 3 hours to obtain an emulsifier.

[0038] The sensitizer is made by mixing N,N-dinitrosopentamethylenetetramine and water in a mass ratio of 1:2.

[0039] Preparation of three-level coal mine allowable emulsion explosive:

[0040] Prep...

Example Embodiment

[0047] Example 2

[0048] Preparation of three-level coal mine allowable emulsion explosive:

[0049] Preparation of emulsifier: take 60% sorbitan monooleate and 5% polyacrylamide, mix and heat to 75℃, then add 35% soy lecithin and stir for 3 hours at 75℃. Get emulsifier.

[0050] Preparation of sensitizer: N,N-dinitrosopentamethylenetetramine and water were mixed in a mass ratio of 1:2 to prepare a sensitizer.

[0051] Aqueous phase preparation: Mix 7500g of ammonium nitrate, 900g of sodium nitrate, 80g of sodium chloride and 95g of water to form an oxidant aqueous phase, heating at 110°C and holding for 35 minutes to obtain an aqueous phase solution;

[0052] (2) Oil phase preparation: mix and heat 13g of microcrystalline wax, 41g of vacuum distillate oil and 22g of emulsifier to form a combustible oil phase; heating at 90°C and holding for 30 minutes to obtain an oil phase liquid;

[0053] (3) Emulsification: add the water phase solution and the oil phase liquid to the emulsifier sep...

Example Embodiment

[0056] Example 3

[0057] Preparation of three-level coal mine allowable emulsion explosive:

[0058] Preparation of emulsifier: take 60% sorbitan monooleate and 5% polyacrylamide, mix and heat to 75℃, then add 35% soy lecithin and stir for 3 hours at 75℃. Get emulsifier.

[0059] Preparation of sensitizer: N,N-dinitrosopentamethylenetetramine and water were mixed in a mass ratio of 1:2 to prepare a sensitizer.

[0060] Aqueous phase preparation: mix and heat 8000g ammonium nitrate, 1100g sodium nitrate, 100g sodium chloride and 110g water to form an oxidant aqueous phase, heating at 110°C and holding for 35 minutes to obtain an aqueous phase solution;

[0061] (2) Preparation of oil phase: mix and heat 15 g of microcrystalline wax, 48 g of residual oil wax paste and 25 g of emulsifier to form a combustible oil phase; heating at 90°C and holding for 30 minutes to obtain an oil phase liquid;

[0062] (3) Emulsification: add the water phase solution and the oil phase liquid to the emulsif...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an emulsion explosive permissible in a grade-three coal mine. The emulsion explosive is prepared from the following components: ammonium nitrate, sodium nitrate, water, sodium chloride, microcrystalline wax, a continuous phase, an emulsifier and a sensitizing agent. With aqueous solutions of oxidizing agents like ammonium nitrate and a flame eliminating agent as dispersion phases and a special hydrocarbon (such as diesel fuel fraction, vacuum distillate oil, pressure-reduced cerate, residuum cerate, light deasphalted oil and heavy deasphalted oil) as a continuous phase, the emulsion explosive is prepared by carrying out emulsification under the action of a surfactant (an emulsifier) for formation of water-in-oil type emulsion colloid and then carrying out chemical sensitization. The emulsion explosive has good explosion performance, good security, small amount of fume, hard and non-sticky body, good water resistance, and small changing amplitude of indexes before an expriation data. The emulsion explosive is applicable to explosion of a high-gas mine, a high-gas area in a low-gas mine and a working face with the dangers of coal (rock) and gas outburst.

Description

technical field [0001] The invention relates to a permitted emulsion explosive for third-grade coal mines. Background technique [0002] Emulsion explosives allowed in coal mines are widely used in coal mining blasting projects. In view of the characteristics of dangerous and explosive substances such as gas and coal dust in coal mines, it is required that in addition to considering the explosive performance of explosives in coal mines, special When considering the blasting operation, the explosion suppression safety of explosive explosion on underground explosives. In order to meet the above conditions, the existing three-level coal mine permitted emulsion explosives have made a corresponding compromise on the combination of emulsifiers, flame suppressants and sensitizers, so that the explosion of the three-level coal mine permitted emulsion explosives produced by it will have a negative impact on underground mines. The explosion suppression safety of explosives meets the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C06B31/32C06B23/00
Inventor 李飞李文乾陈晓霞张永燕
Owner 雅化集团旺苍化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap