Reynolds Metals Company

Gulf Oil Corporation

Vaughn L Bullough

Luther O Daley

Willard C Bull

A cold ramming mix suitable for ramming of alumina reduction cell cathode seams at ambient temperature comprising:

Carbon ramming mix

Carbon electrodes, either prebaked or Soderberg, made with coal or petroleum coke aggregate and an industrially stable binder that is derived from the entire organic fraction of bituminous coal and is suitable for manufacturing carbon electrodes according to existing industrial practice in the electrometallurgical industries. The binder is prepared by digesting the coal with a solvent to make a purified pitch, and industrial stability is imparted by fluxing the purified pitch at about 200.degree.-300.degree. C.

Carbon electrodes having stabilized binders derived from the entire

Deashed solid coal effluent from a coal solvent deashing process in which raw coal is converted to deashed solid and liquid coal is passed to a delayed coker. The coker operates at a higher temperature than is employed in the solvent deashing process and produces deashed coke, liquid hydrocarbonaceous material including solvent boiling range liquid and hydrogen-containing gas. The hydrogen produced in the coker is derived from hydrogen which was previously consumed in the deashing step and can also include hydrogen contained in the raw coal. The solvent boiling range liquid and hydrogen produced in the coker are recycled to the solvent deashing step. Since the coker supplies a portion of the solvent required in the deashing step, the deashing step is operated to produce only a portion of its recycle liquid solvent requirement, thereby conserving hydrogen.

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Florence, AL, United States of America

Vaughn L Bullough