Mix-delivery system for explosives
AssigneeLes Explosifs Nordex Ltee/Nordex Explosives Ltd.
InventorsCyrus A. Ross, Eberhard Thurow
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Abstract
Method and apparatus for making aqueous slurry explosives are disclosed. The components of the aqueous slurry explosive are mixed in a variable speed rotary mixer where the speed of the mixer is determined by the sequence of addition of the explosive components. The explosive components generally comprise water; an inorganic oxidizing salt such as ammonium nitrate; organic liquid such as propylene glycol; organic solids such as sugar; air entraining agents such as microspheres; densifying agents such as hot ammonium nitrate solutions; thickening agents such as flours and guar gums and pH adjustors and self-explosives. The aqueous slurry explosive may be formed using ambient temperature water. The apparatus is particularly suited as a mobile unit for use in the field.
Claims9
A mobile mixing plant for mixing on a batch basis components of an aqueous slurry explosive mixture, said mobile plant comprising a plurality of storage tanks for said individual components to be mixed, a rotary mixer for mixing said components, each storage tank having means for transferring a batch quantity of the respective explosive slurry component to said mixer, a variable speed drive for rotating said mixer, means for controlling said variable speed drive to rotate said mixer at various rotational speeds which are predetermined by the sequence of addition of said components to said mixer, all of said individual components introduced to said mixer remaining in said mixer until completely mixed by said rotary mixer into an aqueous slurry explosive mixture and means for withdrawing such aqueous slurry explosive mixture from said mixer.
Dependencies are inferred from the claim text.