Koppers Delaware, Inc.

Carbon Holdings Intellectual Properties, LLC

James T Dietz

Charles Agee Atkins

Billy Jay Cairns

Carl Camille Mueller

Robert McDowell

Michael Bech Malmqvist

John Thomas Baron

A method of producing graphite may include beneficiating an amount of coal to form a coal char, grinding the coal char to produce a crushed char and placing the crushed char in a porous container. Then, the method includes immersing the porous container in a molten salt bath. The molten salt bath includes a graphite anode. The method further includes applying an electrical potential across the porous container and the graphite anode such that a graphite deposit forms on the graphite anode. The graphite anode is removed from the molten salt bath and the graphite deposit is separated from the graphite anode to produce graphite fragments.

Methods and apparatus for production of electrochemical graphite

A process and apparatus for the continuous conversion of isotropic carbonaceous materials into anisotropic mesophase pitch is disclosed. The invention disclosed herein addresses the need for lower production costs compared with traditional batch mesophase conversion of isotropic pitch. A unique thermal processing and in-process separation of reacted mesophase from the continuous matrix of fresh or partially reacted isotropic pitch is provided. Potential uses are for further continuous processing into carbon fibers or carbon form densification.

Method and apparatus for continuous production of mesophase pitch

Pitch production systems utilizing coal tar or decant oil for coal or petroleum based pitch are disclosed. Total pitch production yields are increased by heat treating distillate fractions from the pitch production process. A heat treatment system and process are disclosed in embodiments. The heaviest distillates having the highest molecular weights are subjected to heat treatment, though other embodiments contemplate heat treating a variety of combined distillate fractions. The heat treatment systems require heat soaking the distillate(s) at elevated temperatures of 459-535&#xb0; C. at a near-constant temperature with near-uniform flow. A fraction of the heat-treated distillate may be reintroduced to the pitch production system as part of a continuous process.

Heat treatment process for increased pitch yields

Heat treatment process and system for increased pitch yields

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Mars, PA, United States of America

James T Dietz