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특허 상세정보

Reduced energy blasting agent and method

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) D03D-023/00    C06B-045/00   
미국특허분류(USC) 149/109.6; 149/002; 149/046
출원번호 US-0864339 (2001-05-25)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 7  인용 특허 : 16
초록

The present invention relates to a method of reducing the energy of an emulsion blasting agent as it is being loaded into a borehole and to an improved method of perimeter blasting wherein an energy reducing agent is added to and mixed uniformly throughout an emulsion blasting agent as it is being pumped or conveyed into a perimeter borehole to reduce the energy of the blasting agent to a desired level. In addition, by adding varying amount of gassing agents, the density and sensitivity of the emulsion blasting agent also can be controlled.

대표
청구항

What is claimed is: 1. A method of reducing the energy of an emulsion blasting agent as it is being loaded into a borehole comprising the steps of: a) selecting an emulsion blasting agent comprising an aqueous inorganic oxidizer salt solution forming in droplet form a discontinuous phase and an organic liquid fuel forming a continuous phase; b) conveying the emulsion blasting agent; c) adding an energy-reducing agent to the emulsion blasting agent as it is being conveyed wherein the energy reducing agent is selected from the group consisting of water an...

이 특허에 인용된 특허 (16)

  1. Prest David W. (Southport GB2) Yorke William J. (Quebec CAX). Chemical foaming of emulsion explosive compositions. USP1989104875951.
  2. Tag Arne (Oslo NOX) Petterson Bjorn R. (Oslo NOX) Nygaard Erik C. (Porsgrunn NOX). Emulsion explosive. USP1985024500369.
  3. McKenzie Lee F. (Riverton UT) Lawrence Lawrence D. (Sandy UT). Emulsion explosive containing organic microspheres. USP1989044820361.
  4. McKenzie Lee F. (Riverton UT) Lawrence Lawrence D. (Sandy UT). Emulsion explosives containing a polymeric emulsifier. USP1990064931110.
  5. Cechanski Michael (Mt. Thorley AUX). Explosive composition. USP1995105460670.
  6. Waldock Kevin H. (Wales AUX). Explosive compositions and method utilizing bulking and gassing agents. USP1990094959108.
  7. Chrisp Joseph Dean (Hagerstown MD). Formation of foamed emulsion-type blasting agents. USP1977024008108.
  8. Lawrence Larry D. (Salt Lake City UT) Sudweeks Walter B. (Orem UT) Larsen Raymond D. (Sandy UT). Formulating and delivery system for emulsion blasting. USP1985074526633.
  9. Curtin David J. (South Oakleigh AUX) Yates David E. (East Brunswick AUX). Gas bubble-sensitized explosive compositions. USP1987064676849.
  10. Coursen David L. (Sedona AZ) Flinchman Rufus (Christianberg VA). Low level blasting composition. USP1991125071496.
  11. Engsbraten Bjrn (brebro SEX). Making a reduced volume strength blasting composition. USP1993125271779.
  12. Halander John B. ; Atkinson Kerry S.. Method for forming an emulsion explosive composition. USP2000096113715.
  13. Coursen David L. (Sedona AZ) Flinchum Rufus E. (Christianberg VA). Method of blasting. USP1992035099763.
  14. Miller Kenneth A. (West Jordan UT). Methods of pumping and loading emulsion slurry blasting compositions. USP1986104615752.
  15. Sudweeks Walter B. (Orem UT) Stock Samuel O. (West Jordan UT). Slurry explosive with high strength hollow spheres. USP1984104474628.
  16. Patterson William P. (Mentone AL) Self David N. (Oakman AL). Two phase emulsion useful in explosive compositions. USP1997095670739.