Abstract: Oxygenated furnace black products are disclosed which have a particle size of at least 15 millimicrons, a dibutylphthalate absorption (DBP) not exceeding 120 c.c./100 gms., a nitrogen surface area of at least 450 m.sup.2 /gm., and an oxygen content of at least 4 weight percent.These products can be produced by treating a furnace carbon black feedstock with an oxidizing agent, such as nitric acid, in order to substantially increase the volatile and the oxygen content of the black.

Abstract: Micro-beads having a carbonaceous structure are produced by a process comsing heating pitch at about 350-500.degree.C to form optically anisotropic spherules, extracting the resulting spherules with an organic solvent to remove substantially all remaining pitch therefrom, and then carbonizing the pitch-free spherules in a non-oxidizing atmosphere. The optically anisotropic micro-beads substantially free of pitch can be shaped to a desired form and then carbonized to produce a shaped carbonaceous structure. If the carbonizing temperature is above about 1500.degree.C, a graphite crystalline structure results.

Abstract: Carbon black is produced in a generally vertically extending reactor in which a feed oil is introduced at the top. Combustion gases are introduced into an upper region of the reactor to supply sufficient heat to decompose the oil to form carbon black. Grit is removed from the carbon black by passing a stream of air upwardly through the carbon black, either in the reactor or in a separate chamber. The reactor can be of such configuration as to cause a reversal in the direction of flow of the carbon black to facilitate grit removal.

Abstract: This disclosure relates to an improved furnace process for preparing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstocks wherein the resultant blacks have higher structure characteristics than the carbon blacks normally prepared from the feedstocks.

Abstract: Axial hydrocarbon oil feed surrounded by axial air is charged to a hemispherically-shaped inlet-end carbon black reactor. Hot combustion gases are added via an outer annulus surrounding the downstream end of the reactor. Product smoke is recovered via a central annular zone and passed to conventional recovery, after water quench, e.g. to filtration, wet pelleting and drying of the wet pellets.