Title of Invention

"AN EMULSION EXPLOSIVE AND CORD SYSTEM AND EMULSION EXPLOSIVE CARTRIDGES MADE THEREFROM, SUITABLE FOR USE IN BG METHOD IN UNDERGROUND COAL MINES"

Abstract An emulsion explosive and cord system and emulsion explosive cartridges made therefrom, suitable for use in blasting gallery method in underground coal mines. The emulsion explosive and cord system and emulsion explosive cartridges made therefrom, suitable for use in blasting gallery method in underground coal mines, consists of a synergistic emulsion explosive composition having flame quenching chemicals such as flame retardant polymers as dopants to the extent of 5 to 40 wt.%. The said explosive composition being covered in a flame retardant film, such as HDPE film encased in an additional outer cover such as a tube/film of a fire retardant polymer (FRP), such as a polymer which includes PVC and any polymer of similar group and provided with a suitable cord capable of working as a detonating cord suitable for use in blasting gallery method.
Full Text


We Claim:
1. An emulsion explosive and cord system and emulsion explosive cartridges made therefrom, suitable
for use in blasting gallery method in underground coal mines, which comprises a synergistic emulsion
explosive composition characterized in that the said synergistic emulsion explosive composition having
flame quenching chemicals selected from flame retardant polymers as dopants to the extent of 5 to 40
wt.%, wherein the said explosive composition being covered in a flame retardant film, selected from
HDPE film encased in an additional outer cover selected from a tubelfilm of a fire retardant polymer
(FRP), selected from a polymer which includes PVC and any polymer of similar group and provided with a
suitable cord capable of working as a detonating cord suitable for use in blasting gallery method.
2. An emulsion explosive and cord system and emulsion explosive cartridges made therefrom, as claimed
in claim 1, wherein the synergistic emulsion explosive composition comprises:
(a) Oxidizing agent : 56.0 ± 10.0 wt.%
(b) Nitrates : 3.0 ± 1.5 wt.%
(c) Sensitizing agent : 3.0 ± 1.5 wt.%
(d) Reducing agent : 2.5 ± 1.5 wt.%
(e) Emulsifier/Surfactant : 2.5 ± 1.5 wt.%
(f) Gassing agent : 0.07 ± /- 0.04 wt.%
(g) Water : 9.0 ± 3.0 wt.%
(h) Dopants : 24.0 ± 11.0 wt.%
3. A synergistic emulsion explosive composition as claimed in claim 1-2, wherein the oxidizing agent is
selected from the group consisting of ammonium nitrate; the nitrates are selected from nitrates of alkali
or alkaline earth metals and the reducing agent is hydrocarbon fuels, selected from process oil and wax
or mixture thereof, all of commercial grade.
4. A synergistic emulsion explosive composition as claimed in claim 1-3, wherein the sensitizing agent is
selected from the group consisting of as perchlorates of metals of sodium, potassium and amine nitrates
of methylamine, ethylene diamine.
5. A synergistic emulsion explosive composition as claimed in claim 1-4, wherein the emulsifier /
surfactant is selected from the group consisting of Sorbiton mono oleate and/or a polymeric emulsifier
thereof.
6. A synergistic emulsion explosive composition as claimed in claim 1-5, wherein the gassing agent is
selected from the group consisting of sodium nitrite or physical voids selected from glass micro-balloons.
7. A synergistic emulsion explosive composition as claimed in claim 1-6, wherein the dopants are fire
retardant dopants is selected from the group consisting of chlorides, bromides of sodium, potassium or
of alkali metals thereof and fire quenchers selected from the phosphates of sodium, potassium and
oxides of metals thereof.

Documents:

2468-del-2006-abstract.pdf

2468-del-2006-Claims-(27-05-2013).pdf

2468-del-2006-correspondence-other.pdf

2468-DEL-2006-Correspondence-Others-(21-01-2009).pdf

2468-del-2006-Correspondence-Others-(27-05-2013).pdf

2468-del-2006-description (provisional).pdf

2468-DEL-2006-Form-1-(21-01-2009).pdf

2468-del-2006-form-1.pdf

2468-del-2006-form-13-(21-01-2009).pdf

2468-del-2006-form-2.pdf

2468-DEL-2006-Form-26-(21-01-2009).pdf

2468-DEL-2006-Form-3.pdf

2468-del-2006-form-5.pdf

2468-del-2006-Reply For Secrecy Direction-(29-09-2011).pdf


Patent Number 257679
Indian Patent Application Number 2468/DEL/2006
PG Journal Number 44/2013
Publication Date 01-Nov-2013
Grant Date 25-Oct-2013
Date of Filing 16-Nov-2006
Name of Patentee COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
Applicant Address ANUSANDHAN BHAWAN, RAFI MARG, NEW DELHI-110 001, INDIA.
Inventors:
# Inventor's Name Inventor's Address
1 SANJAY KUMAR ROY SCIENTIST, EXPLOSIVE & EXPLOSION LABORATORY, CENTRAL MINING RESEARCH INSTITUTE, BARWA ROAD, DHANBAD- 826001 (JHARKHAND) INDIA
2 RAJEEV RANJAN SINGH SCIENTIST, EXPLOSIVE & EXPLOSION LABORATORY, CENTRAL MINING RESEARCH INSTITUTE, BARWA ROAD, DHANBAD- 826001 (JHARKHAND) INDIA
3 RITESH KUMAR SCIENTIST, EXPLOSIVE & EXPLOSION LABORATORY, CENTRAL MINING RESEARCH INSTITUTE, BARWA ROAD, DHANBAD- 826001 (JHARKHAND) INDIA
4 VARANASI VENKATA RAMANA RAO RESEARCH & QA DEPARTMENT P.O.-INDIA EXPLOSIVES (GOMIA), DIST-BOKARO-829112 (JHARKHAND) INDIA
5 SATYAWAN KUMAR NAYAK RESEARCH & QA DEPARTMENT P.O.-INDIA EXPLOSIVES (GOMIA), DIST-BOKARO-829112 (JHARKHAND) INDIA
PCT International Classification Number A01D
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA