Deutsche Gold- Und Silber-scheideanstalt Vormals Roessler

Degussa Aktiengesellschaft

Lothar Rothbuhr

Gerhard Kuhner

Siegfried Wolff

Werner Sroka

Walter Fritz

Manfred Voll

Edith Eisenmenger

Hans Schafer

Gunter Turk

Karl Vogel

Heinz Grewatta

Alfons Kreher

Wilhelm Berndt

Gustav Muck

Lutz Dworowy

Gunther Fuchs

Kurt Stoklossa

Gunther Dittrich

Gehard Kuhner

Josef Witte

Wilhelm Schumacher

Hans Wagner

Alfred Oelmann

Joachim Armster

Claus Richard Engel

A process for the production of furnace blacks of variable carbon black structure according to the customary furnace black technology is disclosed, whereby a low ratio is adjusted between combustion air and carbon black raw material for achieving high yields and large raw material through-puts, and wherein for lowering of the carbon black structure the carbon black produced is removed entirely or partly from the exhaust gases and the residual gas thus obtained is completely or partially recycled to the combustion chamber of the reactor.

Process for producing furnace blacks of variable carbon black structure

There is prepared a homogeneous mixture of 95 to 30% carbon black and 5 to 70% resorcinol. The resorcinol preferably either has an average particle size of 0.01 to 0.4 mm or is broken down to that size. The product is employed in rubber mixture to improve the adhesion of rubber vulcanizates to metal, textile fibers, glass fibers, or their structures.

Resorcinol-filler preparation, process for the production and use of the

The invention relates to a process for after-oxidation of carbon black powder with oxidants which are gaseous or are dispersed in the gas phase. A closed vertical cylinder is provided at its top with a carbon black input opening and a vent duct and at its bottom with feed ducts for oxidant or flushing air. A stirrer shaft runs along its central axis; stirrer arms are fitted to it at intervals over the height of the cylinder and offset with respect to each other, and sweep over the whole cylinder cross section in predominantly horizontal setting.

Oxidative after-treatment of carbon black

There are produced mixed granulates of carbon black-light filler using carbon black and an aqueous suspension of a light filler, e.g. precipitated in a pin containing screw granulator.

Process for the production of mixed granulate from carbon black and

There is prepared a homogeneous mixture of 95 to 30% carbon black and 5 to 70% resorcinol. The resorcinol preferably either has an average particle size of 0.10 to 0.4 0.40 mm or is broken down to that size. The product is employed in rubber mixture to improve the adhesion of rubber vulcanizates to metal, textile fibers, glass fibers, or their structures.

Beaded carbon black is disclosed with a water content of 30 to 80% by weight which are used for coloring of paper and concrete. The product has the advantage of dust-free handling and a higher jet black color compared to conventional carbon black powder.

Process for the production of water containing carbon black preparations

The invention relates to a silane/filler preparation, consisting essentially of from 5 to 70% by weight of at least one silane corresponding to the following formula

Silane/filler preparations, process for their production and their use

There is set forth a process for the production of furnace black comprising spraying an oily carbon black forming material into a stream of hot combustion gases produced by reaction of fuel with reaction air, chilling and recovery of the carbon black by separation from the waste gases during which the reaction air is heated by means of waste gases. The waste gases are burned in a combustion apparatus by means of secondary air in order to heat the reaction air to a temperature between 600.degree. and 1,250.degree. C., preferably between 800.degree. and 1100.degree. C. and the thus heated reaction air is then introduced into the process.

Process for the production of furnace black

High quality carbon black forming material convertible with high yield into furnace black having a high abrasion resistance in rubber is prepared by dissolving pitch with conventional thinly liquid carbon black feed stock and mechanically separating suspended matter from the mixture obtained.

Process for the production of high quality carbon black

Process for the control of the ratio DBP number/DBP number after

Furnace black is produced by a thermal splitting of a carbon black forming oil by oxidation of a fuel in a combustion chamber with production of a stream of hot combustion gases, introduction of this stream in a constricted mixing chamber narrower than the fuel chamber, inserting the carbon black forming material into the mixing chamber and conveying the mixture into an enlarged reaction chamber compared to the mixing chamber as well as quenching the carbon black containing reaction mixture, the stream of hot combustion gases being introduced into the mixing chamber via an annular channel or introducing the stream into an annular channel shaped mixing chamber and spraying in the carbon black forming material into the mixing chamber or ring conduit from within outwardly.

Apparatus for the production of carbon black

Process for the production of high quality carbon black forming material

There is prepared carbon black having the following properties:

Carbon black for lacquers and pigments

There is provided a carbon black concentrate of the following composition:

Carbon black concentrate

Carbon black low in coke and grit is produced at a higher hourly rate and higher yield per unit of oil employed in a furnace black reactor using a burner-injector combination for the production of heat energy and for the injection of very fine drops of carbon forming material (feed/stock) by a process which uses a reactor with a restriction mixing the liquid carbon black forming material supplied through an inner tube of the burner-injector combination with a gaseous atomizing medium supplied from a jacket tube surrounding this inner tube, the jacket tube being conically tapered before an exit nozzle, said mixing occurring just before the exit nozzle, the outermost fuel gas jacket being so provided with relatively few gas openings that the fuel gas pressure at the burner amounts to over 1.5 atmospheres absolute and the fuel gas exit speed is over 320 meters per second.

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Hurth-Hermulheim, Germany

Lothar Rothbuhr