Method for mixing and placing explosive compositions

{
  "publication_number": "US4369689A",
  "country": "US",
  "kind": "A",
  "title": "Method for mixing and placing explosive compositions",
  "abstract": "A process, and apparatus for performing same, of simultaneous mixing and placement of an explosive composition comprising a dispersion of an explosive component located in and immobilized by a solidified foamed non-explosive matrix.",
  "claims": [
    "1. A process for the preparation of an explosive composition comprising a dispersion of an explosive component located in and immobilized by a solidified foamed non-explosive matrix which process comprises: forming a hollow stream of solid particles of said explosive component; mixing said stream of solid particles with a stream of liquid droplets comprising a precursor for said foamed non-explosive matrix by generating a stream of said liquid droplets within said hollow stream of solid particles; and introducing said stream of solid particles and liquid droplets into a container.",
    "2. A process according to claim 1 wherein said stream of solid particles comprises a hollow cylindrical falling stream of solid particles which is generated by causing a falling stream of solid particles to impinge on a cone shaped deflector.",
    "3. A process according to claim 2 wherein said stream of liquid droplets comprises a falling stream of liquid droplets which is generated by spraying said liquid within said hollow cylindrical falling stream of solid particles.",
    "4. A process according to claim 1 wherein said explosive component comprises a particulate inorganic oxygen releasing salt.",
    "5. A process according to claim 4 wherein said particulate inorganic oxygen releasing salt comprises ammonium nitrate.",
    "6. A process according to claim 5 wherein the ammonium nitrate comprises particles in the size range of from 1000 microns to 3000 microns.",
    "7. A process according to claim 1 wherein said solidified foamed non-explosive matrix comprises a polyurethane foam.",
    "8. A process according to claim 1 wherein said container is a borehole."
  ],
  "cpc": [
    "C06B 21/0008",
    "B01F 25/23",
    "B01F 25/721",
    "C06B 21/0091"
  ],
  "assignees": [
    "ICI AUSTRALIA LTD"
  ],
  "filing_date": "1980-09-24",
  "publication_date": "1983-01-25",
  "grant_date": "1983-01-25",
  "priority_date": "1979-10-05",
  "application_number": "US-19025180-A",
  "family_id": "3768303",
  "citations": [
    "US2071846A",
    "US3013525A",
    "US3022149A",
    "US3303738A",
    "US4275682A"
  ]
}