Water gel explosive with low detonation velocity for mining and method for producing same

A technology of water-gel explosives and low detonation velocity, which is applied in explosives, explosives processing equipment, non-explosive/non-thermal agent components, etc. It can solve the problems of low energy density of explosives, poor production safety, and reduced detonation velocity, so as to achieve good explosive safety , production safety, and the effect of reducing the detonation velocity

Inactive Publication Date: 2006-12-27
ANHUI UNIV OF SCI & TECH
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of low-detonation velocity explosives at home and abroad, and can refer to the low-detonation-velocity expanded ammonium nitrate explosive and its preparation method invented by Lu Chunxu et al. The main preparation process is to dilute ammonium nitrate with inert substances such as combustibles and perlite to reduce the detonation velocity. See Chinese Patent No. 02137848.7; Lu Chunxu etc. invented industrial low detonation velocity mixed explosives and its preparation method, adding No. 2 rock powdery ammonium nitrate explosives into heavy metal oxides or industrial black powder to reduce detonation velocity, see Chinese Patent No. 89105369.7; Zhang Hongfeng et al. Detonation velocity type seismic source powder column, by changing the charge structure, using decomm

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

Embodiment 1

[0026] The detonation velocity range is 2000 ~ 2300m / s coal mine allows low detonation velocity water-gel explosives, the selected components and mass ratio are: 28.5% ammonium nitrate solution with a concentration of 78%, 25% methylamine nitrate solution with a concentration of 83%, 9% sodium nitrate, 0.8% squash powder, 15% calcium carbonate, 2% hydrophobic perlite, 0.5% polystyrene plastic ball, 0.2% potassium dichromate, and 19% composite water-resistant granular ammonium nitrate. Among them: the composition and mass ratio of composite water-resistant granular ammonium nitrate is: granular ammonium nitrate 92%, composite water-resistant coating agent 8%; the composition and mass ratio of composite water-resistant coating agent material is: composite wax 30%, rosin 25%, stearylamine 35%, RJ-1 emulsifier (chemical name polyisobutylene succinimide) 10%.

[0027] Composite wax is produced by Jiangsu Taizhou Oil Refinery in the embodiment of the present invention, and RJ-1 emul...

Embodiment 2

[0036] To manufacture coal mine-approved low-detonation-velocity explosives whose detonation velocity ranges from 1700 to 2000m / s, the selected components and mass ratios are: 18.6% of ammonium nitrate solution with a concentration of 83%, 23% of methylamine nitrate solution with a concentration of 78%, 12% sodium nitrate, 0.8% squash powder, 14% calcium carbonate, 3% hydrophobic perlite, 0.4% polystyrene plastic ball, 0.2% potassium pyroantimonate, 28% composite water-resistant granular ammonium nitrate. Among them: the component and mass ratio of composite water-resistant granular ammonium nitrate are: granular ammonium nitrate 91%, composite water-resistant coating agent 9%; the component and mass ratio of composite water-resistant coating agent material is: composite wax 40%, rosin 25%, stearylamine 25%, SP-80 emulsifier (chemical name sorbitan monooleate) 10% (produced by Huaibei Blasting Research Institute of Coal Science Research Institute).

[0037] According to the ab...

Embodiment 3

[0039]To manufacture water-gel explosives with low detonation velocity allowed in coal mines whose detonation velocity ranges from 1800 to 2200m / s, the selected components and mass ratio are: 22% ammonium nitrate solution with a concentration of 82%, 25% methylamine nitrate solution with a concentration of 82% , sodium nitrate 12%, safflower powder 0.8%, calcium carbonate 14%, hydrophobic perlite 2.5%, polystyrene plastic ball 0.5%, potassium dichromate 0.2%, composite water-resistant granular ammonium nitrate 23%. Among them: the composition and mass ratio of water-resistant granular ammonium nitrate are: granular ammonium nitrate 90%, composite water-resistant coating agent 10%; the composition and mass ratio of composite water-resistant coating agent material is: paraffin wax 40% , rosin 25%, stearylamine 30%, RJ-1 emulsifier 5%.

[0040] According to the above-mentioned components and contents, according to the preparation steps of Example 1, a water-gel explosive with a d...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a low-exploding slurry explosive and preparing method, which comprises the following parts: 15-30% ammonium nitrate solution, 22-32% methylamine nitrate solution, 8-15% sodium nitrate, 0.8-0.9% sesban powder, 12-15% calcium carbonate, 0.7-3.4% hydrophobic pearlite, 0.3-0.6% polystyrene plastic ball, 0.2-0.4% cross linker and 18-30% composite water resistance grain-sized ammonium nitrate. The preparing method comprises the following steps: preparing ammonium nitrate solution and composite water resistance grain-sized ammonium nitrate (the grain size is 3-5 mm); adding ammonium nitrate solution, methylamine nitrate solution, sodium nitrate, sesban powder, calcium carbonate, hydrophobic pearlite, polystyrene plastic ball, cross linker and composite water resistance grain-sized ammonium nitrate in the mixing tank; blending evenly; loading.

Description

technical field [0001] The present invention relates to an explosive and its manufacturing method, in particular to a method for blasting dangerous working faces containing gas and coal dust explosions in coal mines, controlling the degree of coal falling in blasting, or controlling blasting on the eye surface around the roadway, or low gas permeability. Coal mine permissible low detonation velocity water gel explosive used in gas outburst coal seam drainage hole pre-splitting antireflection control blasting and its manufacturing method. Background technique [0002] In the controlled blasting of roadways and working faces where gas and coal dust explosions are dangerous, in order to control the degree of falling coal lumps or reduce the damage to surrounding rock or coal by blasting, there is an urgent need for a coal mine-approved explosive with low explosion velocity and high power. . For example, in the smooth blasting construction of the roadway, loading the explosive ...

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): C06B31/32C06B23/00C06B21/00C06B45/18
Inventor 颜事龙刘泽功黄文尧
Owner ANHUI UNIV OF SCI & TECH
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