Disclosed is a non-polluting high temperature combustion system which comprises in combination a graphite-lined combustion chamber fueled by a controlled-burn thermite fuel, wherein the fuel burns a temperature of up to 6000 degrees Fahrenheit, wherein the resulting gases are essentially pollution free; the system also include a means of passing a substrate into and out of the combustion chamber and/or a turbine powered by gases from the combustion products, means of injecting a working fluid in...

A thermite composition for pyrotechnics having high heat transfer charactistics comprising a strongly reducible metal oxide, a thermally decomposable heat transfer agent consisting of Cu.sub.2 O, and a strong reducing agent. It is desirable that the stoichiometerics and mechanics of the thermite reaction is such that there is a substantial excess of oxygen. Also, other ingredients may be added to the composition such as gas generating compounds, binders, diluents and supplemental oxidizing agent...

Disclosed is a device for operating a wheelchair with an occupant's use of one arm comprising a first member having structure to be engagably attached to the frame of the wheelchair and a second member movably attached to the first member such that when the device is attached to a wheelchair, the second member is cabable of frictionally engaging the surface across which the wheelchair is operated by frictionally engaging said surface in the periphery of the front of the wheelchair. The further e...

Disclosed is a method of cleaning sediment from the bottom of a large storage container of clean water comprising sanitizing a cleaning person and a suction pump to remove the majority of skin viruses, germs, bacteria and dirt from the surface of his skin and/or apparel and the suction pump; the cleaning person going underwater and slowly submerging; the cleaning person turning on the suction pump before reaching the bottom of the container; the cleaning person removing sediment from a spot on t...

A process useful for the production of a carbon black useful as an ingredient in dry cell battery compositions is disclosed which comprises heating a carbon black feedstock having a dibutylphalate absorption (DBP) ranging from 200 to 250 cc/100 g, nitrogen surface area ranging from about 30 to about 60 m.sup.2 /g, an average stacking height (L.sub.c) of ordered graphitic layer segments ranging from about 1.1 to about 1.5 nm, and a wide aggregate size distribution with a range of measured aggrega...

Disclosed is a method of producing carbon black by subjecting to a separation step a hydrocarbon feedstock containing a meltable solid, clarifying the hydrocarbon of the meltable solid and thereby making a concentrate of hydrocarbon and the meltable solid, and whereas the clarified hydrocarbon is introduced into the oil furnace process reactor to be converted to carbon black. The improvement lies in introducing the concentrate into the reaction zone of the reactor at a point where the temperatur...

A receptacle device comprising a tapered container having an opening and a cover pivotally attached to the opening in such a manner that the cover opens free of the opening so that a series of containers can be nested one within another without interference with the attachment of the covers and secondarily allowing easy placement and removal of sacks, bags or liner inserts.

Well completion apparatus is prepared in such a manner that a first metal element and a second metal element of the apparatus will have the capability of acting as a galvanic couple when contacted intimately with an electrolyte. During a sufficient amount of time of contact with the electrolyte, the first metal element will sacrificially corrode providing a passageway for flow of fluids between the interior and exterior of a conduit disposed in a well bore.

Disclosed is an improved method of separating a first salt and a second salt from an aqueous solution containing both salts and salt impurities, where the solubility of the first salt increases more with increasing temperatures than the solubility of the second salt, and at least a portion of the salt impurities precipitates as slower settling rate crystals than the settling rate of precipitated second salt. The solution is passed through a series of evaporators in which second salt and salt imp...

Disclosed is an improved method of concentrating with respect to a first salt an aqueous solution containing the first salt and a second salt, the solubility of the first salt increasing more with increasing temperatures than the solubility of the second salt, by multiple stage evaporation at progressively higher temperatures and backward feed, wherein first salt and second salt is precipitated in an evaporator stage which communicates with an elutriation leg, wherein an aqueous slurry containin...