Back to results
US 9,174,887 B1Granted
Method for the preparation of heavy ANFO using high density ammonium nitrate and gassed bulk emulsion
AssigneeExsa S.A.
InventorsKarl Maslo, Heberth Ruiz
Life of this patent
Estimating the term…
Abstract
A method of preparing heavy ANFO including loading high density ammonium nitrate into a hopper; feeding the high density ammonium nitrate into a mixing chamber; during the feeding step, injecting fuel into a high density ammonium nitrate feeding pipe, thereby obtaining ANFO; loading bulk emulsion into a hopper; gassing the bulk emulsion; feeding the gassed bulk emulsion into a same mixing chamber as the ANFO; and mixing the gassed bulk emulsion and the ANFO, thereby obtaining heavy ANFO.
Claims13
A method of preparing heavy ANFO comprising:
- loading high density ammonium nitrate into a hopper;
- feeding the high density ammonium nitrate into a mixing chamber,
- during the feeding step, injecting fuel into a high density ammonium nitrate feeding pipe, thereby obtaining ANFO;
- loading bulk emulsion into a hopper;
- gassing the bulk emulsion;
- feeding the gassed bulk emulsion into a same mixing chamber as the ANFO;
- mixing the gassed bulk emulsion and the ANFO, thereby obtaining heavy ANFO;
- and
- wherein the high density ammonium nitrate includes a bulk density in the range of 0.95-1.00 kg/L, an oil absorbency of less than or equal to 4%, and a crushing strength of 0.4-0.6 kg.
6 more elements
A method of preparing heavy ANFO comprising:
- loading high density ammonium nitrate into a hopper, wherein the high density ammonium nitrate has a density of at least 0.95 kg/L;
- feeding the high density ammonium nitrate into a mixing chamber while injecting fuel into a high density ammonium nitrate feeding pipe, wherein the mixing ratio of the fuel with respect to the high density ammonium nitrate is at least 2:98, thereby obtaining ANFO;
- loading bulk emulsion into a hopper;
- gassing the bulk emulsion;
- feeding the gassed bulk emulsion into the same mixing chamber as the ANFO, wherein the mixing ratio of the gassed bulk emulsion with respect to the ANFO is at least 20:80;
- mixing the gassed bulk emulsion and the ANFO in the mixing chamber, thereby obtaining heavy ANFO;
- and
- wherein high density ammonium nitrate includes a density having a range of about 0.95 to 1.00 kg/L, an oil absorbency of less than or equal to 4%, and a crushing strength of 0.4-0.6 kg.
5 more elements
A method of preparing heavy ANFO comprising:
- loading high density ammonium nitrate into a hopper,
- wherein the high density ammonium nitrate has a density with a range from 0.95 to 1.00 kg/L, an oil absorbency of less than or equal to 4%, and a crushing strength of 0.4-0.6 kg;
- feeding the high density ammonium nitrate into a mixing chamber while injecting fuel into a high density ammonium nitrate feeding pipe,
- wherein the fuel includes a biofuel, biodiesel, diesel, mineral oil and residual oil,
- wherein a mixing ratio of the fuel with respect to the high density ammonium nitrate includes 2:98 to 6:94, thereby obtaining ANFO;
- loading bulk emulsion into a hopper;
- gassing the bulk emulsion;
- feeding the gassed bulk emulsion into a same mixing chamber as the ANFO,
- wherein the mixing ratio of the gassed bulk emulsion with respect to the ANFO includes 20:80 to 70:30;
- and
- mixing the gassed bulk emulsion and the ANFO in the mixing chamber, thereby obtaining heavy ANFO.
8 more elements
Dependencies are inferred from the claim text.