PE20060200A1

PE20060200A1 - EXPLOSIVE EMULSION AS A WATER IN OIL TYPE BLASTING AGENT FORMULATED AND MANUFACTURED WITH AGRICULTURAL GRADE AMMONIUM NITRATE

Info

Publication number: PE20060200A1
Application number: PE2004001163A
Authority: PE
Inventors: Gallegos Michael Juan Montoya; Valle Herberh Lawrency Ruiz
Original assignee: Exsa S A
Priority date: 2004-11-25
Filing date: 2004-11-25
Publication date: 2006-03-22

Abstract

SE REFIERE A UN PRECURSOR DE EMULSION EXPLOSIVA DE TIPO AGUA EN ACEITE CONSTITUIDO DE 75% A 85% DE UNA SOLUCION ACUOSA OXIDANTE DE SALES INORGANICAS Y NITRATO DE AMONIO COMO FASE DISPERSA. LAS IMPUREZAS DE LA SOLUCION ACUOSA SON ELIMINADAS PREVIAMENTE A TRAVES DE UN FILTRO PRENSA USANDO LONA FILTRANTE DE 1 A 5 MICRONES CON PRESENCIA DE AYUDA FILTRANTE DE 1 A 10 MICRONES Y UNA POSTERIOR MODIFICACION DEL pH A UN RANGO DE 1 A 4. EL PRECURSOR TIENE UNA FASE CONTINUA COMBUSTIBLE CONSTITUIDA DE ACEITE O DIESEL 2 Y UN EMULSIFICANTE O UNA MEZCLA CON UN CO-EMULSIFICANTE. SE DESCRIBE UNA EMULSION MATRIZ CONSTITUIDO DE 90% A 92% POR PESO DEL PRECURSOR, Y DE 8 A 10% DE HIDROCARBURO LIQUIDO TAL COMO PETROLEO DIESEL 2 O ACEITE PARAFINICO QUE SE APLICAN SEPARADA O SIMULTANEAMENTE PARA OBTENER UNA EMULSION FINAL CON VISCOSIDAD ENTRE 18 000 Y 30 000 mPa*s. EL PROCESO DE FABRICACION DE LAS EMULSIONES COMPRENDE: a) PREPARAR LA SOLUCION ACUOSA OXIDANTE EN UN PRIMER TANQUE Y LUEGO BOMBEAR A TRAVES DE UN FILTRO PRENSA, Y EN UN SEGUNDO TANQUE MODIFICAR EL pH; b) PREPARAR LA MEZCLA DE LOS COMPONENTES COMBUSTIBLES DE LA FASE CONTINUA EN OTRO RECIPIENTE; c) INCORPORAR EN UN TANQUE DE CALENTAMIENTO Y AGITACION LA FASE COMBUSTIBLE Y LUEGO AGREGAR LA SOLUCION OXIDANTE LENTAMENTE, PREVIAMENTE FILTRADA, PRODUCIENDOSE UNA PRE-EMULSION; d) REFINAR LA PRE-EMULSION EN UN MOLINO COLOIDAL; Y, e) MEZCLAR CON MICROESFERAS DE VIDRIO O NITRATO DE AMONIO POROSO O ANFO PARA SU USO COMO AGENTE DE VOLADURAREFERS TO A WATER-IN-OIL TYPE EXPLOSIVE EMULSION PRECURSOR CONSTITUTED FROM 75% TO 85% OF AN OXIDIZING AQUEOUS SOLUTION OF INORGANIC SALTS AND AMMONIUM NITRATE AS DISPERSE PHASE. THE IMPURITIES OF THE AQUEOUS SOLUTION ARE PREVIOUSLY ELIMINATED THROUGH A PRESS FILTER USING A FILTER CANVAS OF 1 TO 5 MICRONS WITH THE PRESENCE OF FILTER AID OF 1 TO 10 MICRONS AND A SUBSEQUENT MODIFICATION OF THE pH TO A RANGE OF 1 TO 4. THE PRECURSOR HAS A CONTINUOUS COMBUSTIBLE PHASE CONSTITUTED OF OIL OR DIESEL 2 AND AN EMULSIFIER OR A MIXTURE WITH A CO-EMULSIFIER. IT DESCRIBES A MATRIX EMULSION CONSTITUTED OF 90% TO 92% BY WEIGHT OF THE PRECURSOR, AND OF 8 TO 10% OF LIQUID HYDROCARBON SUCH AS DIESEL 2 PETROLEUM OR PARAFFINIC OIL THAT ARE APPLIED SEPARATELY OR SIMULTANEOUSLY TO OBTAIN A VISCESSION OF 18 000 ENT And 30,000 mPa * s. THE EMULSIONS MANUFACTURING PROCESS INCLUDES: a) PREPARE THE AQUEOUS OXIDIZING SOLUTION IN A FIRST TANK AND THEN PUMP THROUGH A PRESS FILTER, AND IN A SECOND TANK MODIFY THE pH; b) PREPARE THE MIXTURE OF THE COMBUSTIBLE COMPONENTS OF THE CONTINUOUS PHASE IN ANOTHER CONTAINER; c) INCORPORATE THE COMBUSTIBLE PHASE IN A HEATING AND AGITATION TANK AND THEN ADD THE OXIDIZING SOLUTION SLOWLY, PREVIOUSLY FILTERED, PRODUCING A PRE-EMULSION; d) REFINE THE PRE-EMULSION IN A COLLOIDAL MILL; AND, e) MIX WITH MICROSPHERES OF GLASS OR POROUS AMMONIUM NITRATE OR ANFO FOR USE AS A BLASTING AGENT