The present invention relates to a method and device for emulsifying emulsion explosive: an oil phase and a part of a water phase having undergone split-flow enter a first stage coarse emulsion mixer; after mixing, the mixture together with a part of the water phase having undergone second stage split-flow enters a second stage coarse emulsion mixer; the obtained mixture together with a part of the water phase having undergone third stage split-flow enters a third stage coarse emulsion mixer for mixing; forming a coarse emulsion matrix after multiple stages of mixing, and finally completing emulsification after mixing in a multi-stage fine emulsion mixer. The method and device mix the water phase with the oil phase multiple times according to a desired ratio, thus greatly reducing the stored explosive, with no mechanical stirring or shearing, with no heat accumulation, and with low pressure, without requiring matrix pumping, thus enhancing safety.

A system is used for additively manufacturing propellant elements, such as for rocket motors, includes partially curing a propellant mixture before extruding or otherwise dispensing the material, such that the extruded propellant material is deposited on the element in a partially-cured state. The curing process for the partially-cured extruded material may be completed shortly after the material is put into place, for example by the material being heated at or above its cure temperature, such that it finishes curing before it fully cools. The propellant material may be prepared by first mixing together, a fuel, an oxidizer, and a binder, such as in an acoustic mixer. After that mixing a curative may be added to the mixture. The propellant mixture may then be directed to an extruder (or other dispenser), in which the mixture is heated to or above a cure temperature prior to the deposition, and then deposited.

Manufacture is carried out in a continuous manner while simultaneously loading the blast holes in a device with mixing capability where (a) a less sensitive or non-explosive water-based matrix containing a cross-linkable polymer, (b) a cross-linking agent for cross-linking the polymer contained in the matrix, (c) a gas-generating agent, are mixed. The presence of the polymer distributed uniformly in the matrix together with the cross-linking agent results in a three-dimensional network formed by molecular polymer chains bound to one another in a short period of time after mixing. The process can be performed in trucks for loading explosives in blast holes having compartments for the different components of the mixture and one or several mixing devices allowing the manufacture of the final mixture which would be unloaded into the blast holes either by means of a pump or an auger.

The present invention provides an explosive composition comprising from about 2 to about 25 w/w hydrogen peroxide, from greater than 0 and up to about 90% w/w of one or more of other oxidisers. The present invention also provides a method of 5 preparing an explosive composition and use of the explosive composition of the invention to break and move ground, such as in mining operations.

Explosive compositions for use in high temperature, reactive ground, or both, are disclosed. The explosive compositions can include an emulsion with a continuous organic fuel phase and a discontinuous oxidizer phase. The oxidizer phase can include one or more Group I or Group II nitrates.

Systems for delivering explosives including homogenizing agents and methods of delivering explosives including homogenizing agents are provided. Methods of mixing homogenizing agents with emulsion matrices are also provided. The methods can include supplying an emulsion matrix, mixing a homogenizing agent with the emulsion matrix into a mixed product, and homogenizing the mixed product into a homogenized product. The homogenized product can be sensitized and/or conveyed to a blasthole.

Disclosed are a nanoenergetic material composite-based solid propellant, a method of preparing the same, and a projectile using the same. The propellant includes: potassium nitrate-sucrose (KNSU) composite powder; and nanoenergetic material (nEM) composite powder in a solid powder form mixed with the KNSU composite powder to prepare a KNSU/nEM propellant. The method includes: preparing KNSU composite powder; preparing nEM composite powder; and preparing a KNSU/nEM propellant by mixing the KNSU composite powder and the nEM composite powder in a solid powder form. The projectile includes: a clay block; a clay nozzle responsible for releasing the pressure generated by explosion of a propellant; and a propellant lamination area disposed between the clay block and the clay nozzle. Upon ignition of the KNSU/nEM propellant, the nEM composite powder increases the combustion rate and combustion temperature of a potassium nitrate-sucrose (KNSU) propellant.

Systems for delivering explosives including homogenizing agents and methods of delivering explosives including homogenizing agents are provided. Methods of mixing homogenizing agents with emulsion matrices are also provided. The methods can include supplying an emulsion matrix, mixing a homogenizing agent with the emulsion matrix into a mixed product, and homogenizing the mixed product into a homogenized product. The homogenized product can be sensitized and/or conveyed to a blasthole.

The present invention relates to methods of preparing pre-mixed compositions that can be combined to form pyrotechnic compositions. In exemplary embodiments, a binder ingredient is premixed with the pyrotechnic fuels and can also include other pyrotechnic additives and processing aides. Other binder ingredients can be premixed with the pyrotechnic oxidizers and can also include other pyrotechnic additives and processing aides. The resulting mixtures are not explosive and are therefore easier to store and much safer to handle. These pre-mixed mixtures can be stored in bulk until needed and rapidly combined to achieve final composition.

Disclosed are a nanoenergetic material composite-based solid propellant, a method of preparing the same, and a projectile using the same. The propellant includes: potassium nitrate-sucrose (KNSU) composite powder; and nanoenergetic material (nEM) composite powder in a solid powder form mixed with the KNSU composite powder to prepare a KNSU/nEM propellant. The method includes: preparing KNSU composite powder; preparing nEM composite powder; and preparing a KNSU/nEM propellant by mixing the KNSU composite powder and the nEM composite powder in a solid powder form. The projectile includes: a clay block; a clay nozzle responsible for releasing the pressure generated by explosion of a propellant; and a propellant lamination area disposed between the clay block and the clay nozzle. Upon ignition of the KNSU/nEM propellant, the nEM composite powder increases the combustion rate and combustion temperature of a potassium nitrate-sucrose (KNSU) propellant.