The present invention relates to a water-in-oil (W/O) emulsion explosive comprising one or more of graphene oxide (GO), partially reduced graphene oxide (prGO), and functionalized graphene oxide (fGO). There is also provided a method of improving one or more properties of a water-in-oil (W/O) emulsion explosive.

The present application generally relates to compositions with solid fuel loaded on graphene foams (GFs) for enhanced burn rates, and methods of making and using the compositions with solid fuel loaded on graphene foam.

A method continuously produces emulsion explosive by emulsification and sensitization in a static state without a loading pump. After the water phase and oil phase enters a static emulsifier for emulsification, the emulsion enters a static sensitization device; the sensitizer enters the static sensitization device through the sensitizer charging inlet and mixes with the emulsion in the static sensitization device. After emulsification and sensitization, the sensitized explosive directly enters an injection pipe for encapsulation. By adopting the static emulsifier and sensitization device, the explosive material storage amount is greatly reduced, and mechanical stirring and shearing for emulsification is avoided. Meanwhile, mechanical mixing for sensitization is omitted and replaced with full-static high-temperature sensitization, and the safety of sensitization is improved. The loading pump is omitted, and the sensitized emulsion directly enters the injection pipe, thus the risk points in the production process and the online explosive material storage amount are reduced.

A blasting explosive composition containing a solid inorganic oxidising salt as the oxidizer component, a hydrocarbon liquid as the fuel component, and a binding agent. The composition can also contain an ammonium nitrate based emulsion. The binding agent can increase the water resistance, or increase the sleep time, of the explosive composition, or increase the fuel oil absorbency of the solid inorganic oxidising salt. The binding agent is selected from one or more of a long chain carboxylic acid and its salts and derivatives, especially those having from 8 to 100 or preferably 10 to 50 carbon units. The binding agent may preferably be selected from one or more of: dimer acid, trimer acid, polyisobutylene succinic anhydride, oleic acid, stearic acid, sorbitan tristearate, and their salts and esters.

Provided is an emulsion explosive composition having voids/bubbles formed from one or more noble gases dispersed therein. Also provided is a method of manufacturing an emulsion explosive composition that includes mechanically and/or pneumatically infusing an emulsion explosive composition with a noble gas so as to create voids/bubbles formed from one or more noble gases. The noble gases can be contained within closed-cell micro-spheres that are dispersed throughout the emulsion explosive composition.

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.

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.

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.

An explosive emulsion composition of the water-in-oil type, comprising: between 80 wt. % and 95 wt. % of an oxidizer phase in view of the total weight of the emulsion composition, comprising at least 40 wt. % of ammonium nitrate (AN), and at least 5 wt. % of a secondary nitrate salt, in view of the total weight of the oxidizer phase composition, and between 5 wt. % and 20 wt. % of an organic phase in view of the total weight of the emulsion composition, the organic phase comprising: between 12 wt. % and 50 wt. % of one or more emulsifiers, between 50 wt. % and 88 wt. % of a fuel composition, in view of the total weight of the organic phase composition,
characterized in that the fuel composition comprises between 20 wt. % and 100 wt. % of a hydrotreated vegetable oil (HVO), in view of the total weight of the fuel composition.